merge with viewer-release

297 files changed, 13242 insertions, 8951 deletions

diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 452fd5f356..d9553b9a7e 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -58,6 +58,7 @@ if (WINDOWS)
 
   add_definitions(
       /DLL_WINDOWS=1
+      /DNOMINMAX
       /DDOM_DYNAMIC
       /DUNICODE
       /D_UNICODE 
diff --git a/indra/llaudio/llaudiodecodemgr.cpp b/indra/llaudio/llaudiodecodemgr.cpp
index 6c97a64ed7..bcff03ceaa 100644
--- a/indra/llaudio/llaudiodecodemgr.cpp
+++ b/indra/llaudio/llaudiodecodemgr.cpp
@@ -40,6 +40,7 @@
 
 #include "vorbis/codec.h"
 #include "vorbis/vorbisfile.h"
+#include <iterator>
 
 extern LLAudioEngine *gAudiop;
 
diff --git a/indra/llaudio/llstreamingaudio_fmod.h b/indra/llaudio/llstreamingaudio_fmod.h
index 9970f0d03b..a189b548dd 100644
--- a/indra/llaudio/llstreamingaudio_fmod.h
+++ b/indra/llaudio/llstreamingaudio_fmod.h
@@ -30,6 +30,8 @@
 
 #include "stdtypes.h" // from llcommon
 
+#include <list>
+
 #include "llstreamingaudio.h"
 
 class LLAudioStreamManagerFMOD;
diff --git a/indra/llcharacter/llcharacter.cpp b/indra/llcharacter/llcharacter.cpp
index 0a6a8f9fa6..5138be0711 100644
--- a/indra/llcharacter/llcharacter.cpp
+++ b/indra/llcharacter/llcharacter.cpp
@@ -32,6 +32,7 @@
 
 #include "llcharacter.h"
 #include "llstring.h"
+#include "llfasttimer.h"
 
 #define SKEL_HEADER "Linden Skeleton 1.0"
 
diff --git a/indra/llcharacter/lleditingmotion.cpp b/indra/llcharacter/lleditingmotion.cpp
index 0d0b85ba60..ff7ad1c289 100644
--- a/indra/llcharacter/lleditingmotion.cpp
+++ b/indra/llcharacter/lleditingmotion.cpp
@@ -232,7 +232,7 @@ BOOL LLEditingMotion::onUpdate(F32 time, U8* joint_mask)
 		mIKSolver.solve();
 
 		// use blending...
-		F32 slerp_amt = LLCriticalDamp::getInterpolant(TARGET_LAG_HALF_LIFE);
+		F32 slerp_amt = LLSmoothInterpolation::getInterpolant(TARGET_LAG_HALF_LIFE);
 		shoulderRot = slerp(slerp_amt, mShoulderJoint.getRotation(), shoulderRot);
 		elbowRot = slerp(slerp_amt, mElbowJoint.getRotation(), elbowRot);
 
diff --git a/indra/llcharacter/llheadrotmotion.cpp b/indra/llcharacter/llheadrotmotion.cpp
index 15a58a8389..4a8af2f00c 100644
--- a/indra/llcharacter/llheadrotmotion.cpp
+++ b/indra/llcharacter/llheadrotmotion.cpp
@@ -182,8 +182,8 @@ BOOL LLHeadRotMotion::onUpdate(F32 time, U8* joint_mask)
 	LLQuaternion	currentRootRotWorld = mRootJoint->getWorldRotation();
 	LLQuaternion	currentInvRootRotWorld = ~currentRootRotWorld;
 
-	F32 head_slerp_amt = LLCriticalDamp::getInterpolant(HEAD_LOOKAT_LAG_HALF_LIFE);
-	F32 torso_slerp_amt = LLCriticalDamp::getInterpolant(TORSO_LOOKAT_LAG_HALF_LIFE);
+	F32 head_slerp_amt = LLSmoothInterpolation::getInterpolant(HEAD_LOOKAT_LAG_HALF_LIFE);
+	F32 torso_slerp_amt = LLSmoothInterpolation::getInterpolant(TORSO_LOOKAT_LAG_HALF_LIFE);
 
 	LLVector3* targetPos = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");
 
diff --git a/indra/llcharacter/lljoint.h b/indra/llcharacter/lljoint.h
index dc3c58cf64..a9cde545f2 100644
--- a/indra/llcharacter/lljoint.h
+++ b/indra/llcharacter/lljoint.h
@@ -31,6 +31,7 @@
 // Header Files
 //-----------------------------------------------------------------------------
 #include <string>
+#include <list>
 
 #include "linked_lists.h"
 #include "v3math.h"
diff --git a/indra/llcharacter/llkeyframemotion.cpp b/indra/llcharacter/llkeyframemotion.cpp
index c6f45bffa2..831a0a6719 100644
--- a/indra/llcharacter/llkeyframemotion.cpp
+++ b/indra/llcharacter/llkeyframemotion.cpp
@@ -1031,11 +1031,11 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
 	if (constraint->mSharedData->mChainLength != 0 &&
 		dist_vec_squared(root_pos, target_pos) * 0.95f > constraint->mTotalLength * constraint->mTotalLength)
 	{
-		constraint->mWeight = lerp(constraint->mWeight, 0.f, LLCriticalDamp::getInterpolant(0.1f));
+		constraint->mWeight = LLSmoothInterpolation::lerp(constraint->mWeight, 0.f, 0.1f);
 	}
 	else
 	{
-		constraint->mWeight = lerp(constraint->mWeight, 1.f, LLCriticalDamp::getInterpolant(0.3f));
+		constraint->mWeight = LLSmoothInterpolation::lerp(constraint->mWeight, 1.f, 0.3f);
 	}
 
 	F32 weight = constraint->mWeight * ((shared_data->mEaseOutStopTime == 0.f) ? 1.f : 
@@ -1082,9 +1082,9 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
 			// convert intermediate joint positions to world coordinates
 			positions[joint_num] = ( constraint->mPositions[joint_num] * mPelvisp->getWorldRotation()) + mPelvisp->getWorldPosition();
 			F32 time_constant = 1.f / clamp_rescale(constraint->mFixupDistanceRMS, 0.f, 0.5f, 0.2f, 8.f);
-//			llinfos << "Interpolant " << LLCriticalDamp::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << llendl;
+//			llinfos << "Interpolant " << LLSmoothInterpolation::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << llendl;
 			positions[joint_num] = lerp(positions[joint_num], kinematic_position, 
-				LLCriticalDamp::getInterpolant(time_constant, FALSE));
+				LLSmoothInterpolation::getInterpolant(time_constant, FALSE));
 		}
 
 		S32 iteration_count;
diff --git a/indra/llcharacter/llkeyframewalkmotion.cpp b/indra/llcharacter/llkeyframewalkmotion.cpp
index d52eb89a5c..e188b06c03 100644
--- a/indra/llcharacter/llkeyframewalkmotion.cpp
+++ b/indra/llcharacter/llkeyframewalkmotion.cpp
@@ -258,7 +258,7 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 		// but this will cause the animation playback rate calculation below to 
 		// kick in too slowly and sometimes start playing the animation in reverse.
 
-		//mPelvisOffset -= PELVIS_COMPENSATION_WIEGHT * (foot_slip_vector * world_to_avatar_rot);//lerp(LLVector3::zero, -1.f * (foot_slip_vector * world_to_avatar_rot), LLCriticalDamp::getInterpolant(0.1f));
+		//mPelvisOffset -= PELVIS_COMPENSATION_WIEGHT * (foot_slip_vector * world_to_avatar_rot);//lerp(LLVector3::zero, -1.f * (foot_slip_vector * world_to_avatar_rot), LLSmoothInterpolation::getInterpolant(0.1f));
 
 		////F32 drift_comp_max = DRIFT_COMP_MAX_TOTAL * (llclamp(speed, 0.f, DRIFT_COMP_MAX_SPEED) / DRIFT_COMP_MAX_SPEED);
 		//F32 drift_comp_max = DRIFT_COMP_MAX_TOTAL;
@@ -287,7 +287,7 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 		F32 desired_speed_multiplier = llclamp(speed / foot_speed, min_speed_multiplier, ANIM_SPEED_MAX);
 
 		// blend towards new speed adjustment value
-		F32 new_speed_adjust = lerp(mAdjustedSpeed, desired_speed_multiplier, LLCriticalDamp::getInterpolant(SPEED_ADJUST_TIME_CONSTANT));
+		F32 new_speed_adjust = LLSmoothInterpolation::lerp(mAdjustedSpeed, desired_speed_multiplier, SPEED_ADJUST_TIME_CONSTANT);
 
 		// limit that rate at which the speed adjustment changes
 		F32 speedDelta = llclamp(new_speed_adjust - mAdjustedSpeed, -SPEED_ADJUST_MAX_SEC * delta_time, SPEED_ADJUST_MAX_SEC * delta_time);
@@ -305,8 +305,8 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 	{	// standing/turning
 
 		// damp out speed adjustment to 0
-		mAnimSpeed = lerp(mAnimSpeed, 1.f, LLCriticalDamp::getInterpolant(0.2f));
-		//mPelvisOffset = lerp(mPelvisOffset, LLVector3::zero, LLCriticalDamp::getInterpolant(0.2f));
+		mAnimSpeed = LLSmoothInterpolation::lerp(mAnimSpeed, 1.f, 0.2f);
+		//mPelvisOffset = lerp(mPelvisOffset, LLVector3::zero, LLSmoothInterpolation::getInterpolant(0.2f));
 	}
 
 	// broadcast walk speed change
@@ -383,7 +383,7 @@ BOOL LLFlyAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 	F32 target_roll = llclamp(ang_vel.mV[VZ], -4.f, 4.f) * roll_factor;
 
 	// roll is critically damped interpolation between current roll and angular velocity-derived target roll
-	mRoll = lerp(mRoll, target_roll, LLCriticalDamp::getInterpolant(0.1f));
+	mRoll = LLSmoothInterpolation::lerp(mRoll, target_roll, LLUnit<LLUnits::Milliseconds, F32>(100));
 
 	LLQuaternion roll(mRoll, LLVector3(0.f, 0.f, 1.f));
 	mPelvisState->setRotation(roll);
diff --git a/indra/llcharacter/llmotion.cpp b/indra/llcharacter/llmotion.cpp
index 2551f125d0..af2e10220a 100644
--- a/indra/llcharacter/llmotion.cpp
+++ b/indra/llcharacter/llmotion.cpp
@@ -73,7 +73,7 @@ void LLMotion::fadeOut()
 {
 	if (mFadeWeight > 0.01f)
 	{
-		mFadeWeight = lerp(mFadeWeight, 0.f, LLCriticalDamp::getInterpolant(0.15f));
+		mFadeWeight = lerp(mFadeWeight, 0.f, LLSmoothInterpolation::getInterpolant(0.15f));
 	}
 	else
 	{
@@ -88,7 +88,7 @@ void LLMotion::fadeIn()
 {
 	if (mFadeWeight < 0.99f)
 	{
-		mFadeWeight = lerp(mFadeWeight, 1.f, LLCriticalDamp::getInterpolant(0.15f));
+		mFadeWeight = lerp(mFadeWeight, 1.f, LLSmoothInterpolation::getInterpolant(0.15f));
 	}
 	else
 	{
diff --git a/indra/llcharacter/llmotioncontroller.cpp b/indra/llcharacter/llmotioncontroller.cpp
index e9fb91ad73..d1c605451a 100644
--- a/indra/llcharacter/llmotioncontroller.cpp
+++ b/indra/llcharacter/llmotioncontroller.cpp
@@ -30,6 +30,7 @@
 #include "linden_common.h"
 
 #include "llmotioncontroller.h"
+#include "llfasttimer.h"
 #include "llkeyframemotion.h"
 #include "llmath.h"
 #include "lltimer.h"
diff --git a/indra/llcharacter/lltargetingmotion.cpp b/indra/llcharacter/lltargetingmotion.cpp
index 489aef923c..633c1d51eb 100644
--- a/indra/llcharacter/lltargetingmotion.cpp
+++ b/indra/llcharacter/lltargetingmotion.cpp
@@ -106,7 +106,7 @@ BOOL LLTargetingMotion::onActivate()
 //-----------------------------------------------------------------------------
 BOOL LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
 {
-	F32 slerp_amt = LLCriticalDamp::getInterpolant(TORSO_TARGET_HALF_LIFE);
+	F32 slerp_amt = LLSmoothInterpolation::getInterpolant(TORSO_TARGET_HALF_LIFE);
 
 	LLVector3 target;
 	LLVector3* lookAtPoint = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 5cce8ff2c4..f8f1c010f7 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -74,8 +74,10 @@ set(llcommon_SOURCE_FILES
     llmetrics.cpp
     llmetricperformancetester.cpp
     llmortician.cpp
+    llmutex.cpp
     lloptioninterface.cpp
     llptrto.cpp 
+    llpredicate.cpp
     llprocess.cpp
     llprocessor.cpp
     llqueuedthread.cpp
@@ -89,7 +91,6 @@ set(llcommon_SOURCE_FILES
     llsdutil.cpp
     llsecondlifeurls.cpp
     llsingleton.cpp
-    llstat.cpp
     llstacktrace.cpp
     llstreamqueue.cpp
     llstreamtools.cpp
@@ -97,8 +98,12 @@ set(llcommon_SOURCE_FILES
     llstringtable.cpp
     llsys.cpp
     llthread.cpp
+	llthreadlocalstorage.cpp
     llthreadsafequeue.cpp
     lltimer.cpp
+    lltrace.cpp
+    lltracerecording.cpp
+    lltracethreadrecorder.cpp
     lluri.cpp
     lluuid.cpp
     llworkerthread.cpp
@@ -198,9 +203,11 @@ set(llcommon_HEADER_FILES
     llmetrics.h
     llmetricperformancetester.h
     llmortician.h
+    llmutex.h
     llnametable.h
     lloptioninterface.h
     llpointer.h
+    llpredicate.h
     llpreprocessor.h
     llpriqueuemap.h
     llprocess.h
@@ -228,7 +235,6 @@ set(llcommon_HEADER_FILES
     llsortedvector.h
     llstack.h
     llstacktrace.h
-    llstat.h
     llstatenums.h
     llstl.h
     llstreamqueue.h
@@ -238,15 +244,22 @@ set(llcommon_HEADER_FILES
     llstringtable.h
     llsys.h
     llthread.h
+    llthreadlocalstorage.h
     llthreadsafequeue.h
     lltimer.h
+    lltrace.h
+    lltracerecording.h
+    lltracethreadrecorder.h
     lltreeiterators.h
     lltypeinfolookup.h
+    llunit.h
     lluri.h
     lluuid.h
     lluuidhashmap.h
     llversionserver.h
     llversionviewer.h
+    llwin32headers.h
+    llwin32headerslean.h
     llworkerthread.h
     ll_template_cast.h
     metaclass.h
@@ -334,6 +347,7 @@ if (LL_TESTS)
   LL_ADD_INTEGRATION_TEST(llstring "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lltreeiterators "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lluri "" "${test_libs}")
+  LL_ADD_INTEGRATION_TEST(llunits "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(reflection "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(stringize "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lleventdispatcher "" "${test_libs}")
diff --git a/indra/llcommon/llapr.cpp b/indra/llcommon/llapr.cpp
index d1c44c9403..47fa70614f 100644
--- a/indra/llcommon/llapr.cpp
+++ b/indra/llcommon/llapr.cpp
@@ -29,6 +29,7 @@
 #include "linden_common.h"
 #include "llapr.h"
 #include "apr_dso.h"
+#include "llthreadlocalstorage.h"
 
 apr_pool_t *gAPRPoolp = NULL; // Global APR memory pool
 LLVolatileAPRPool *LLAPRFile::sAPRFilePoolp = NULL ; //global volatile APR memory pool.
@@ -37,12 +38,15 @@ apr_thread_mutex_t *gCallStacksLogMutexp = NULL;
 
 const S32 FULL_VOLATILE_APR_POOL = 1024 ; //number of references to LLVolatileAPRPool
 
+bool gAPRInitialized = false;
+
 void ll_init_apr()
 {
+	// Initialize APR and create the global pool
+	apr_initialize();
+	
 	if (!gAPRPoolp)
 	{
-		// Initialize APR and create the global pool
-		apr_initialize();
 		apr_pool_create(&gAPRPoolp, NULL);
 		
 		// Initialize the logging mutex
@@ -52,13 +56,23 @@ void ll_init_apr()
 
 	if(!LLAPRFile::sAPRFilePoolp)
 	{
-		LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE) ;
+		LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE);
 	}
+
+	LLThreadLocalPointerBase::initAllThreadLocalStorage();
+	gAPRInitialized = true;
 }
 
 
+bool ll_apr_is_initialized()
+{
+	return gAPRInitialized;
+}
+
 void ll_cleanup_apr()
 {
+	gAPRInitialized = false;
+
 	LL_INFOS("APR") << "Cleaning up APR" << LL_ENDL;
 
 	if (gLogMutexp)
@@ -77,6 +91,9 @@ void ll_cleanup_apr()
 		apr_thread_mutex_destroy(gCallStacksLogMutexp);
 		gCallStacksLogMutexp = NULL;
 	}
+
+	LLThreadLocalPointerBase::destroyAllThreadLocalStorage();
+
 	if (gAPRPoolp)
 	{
 		apr_pool_destroy(gAPRPoolp);
@@ -84,7 +101,7 @@ void ll_cleanup_apr()
 	}
 	if (LLAPRFile::sAPRFilePoolp)
 	{
-		delete LLAPRFile::sAPRFilePoolp ;
+		delete LLAPRFile::sAPRFilePoolp ;	
 		LLAPRFile::sAPRFilePoolp = NULL ;
 	}
 	apr_terminate();
diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h
index 034546c3f3..3b65c0dc34 100644
--- a/indra/llcommon/llapr.h
+++ b/indra/llcommon/llapr.h
@@ -32,14 +32,6 @@
 #if LL_LINUX || LL_SOLARIS
 #include <sys/param.h>  // Need PATH_MAX in APR headers...
 #endif
-#if LL_WINDOWS
-	// Limit Windows API to small and manageable set.
-	// If you get undefined symbols, find the appropriate
-	// Windows header file and include that in your .cpp file.
-	#define WIN32_LEAN_AND_MEAN
-	#include <winsock2.h>
-	#include <windows.h>
-#endif
 
 #include <boost/noncopyable.hpp>
 
@@ -48,12 +40,26 @@
 #include "apr_getopt.h"
 #include "apr_signal.h"
 #include "apr_atomic.h"
+
 #include "llstring.h"
 
 extern LL_COMMON_API apr_thread_mutex_t* gLogMutexp;
 extern apr_thread_mutex_t* gCallStacksLogMutexp;
 
 struct apr_dso_handle_t;
+/**
+ * @brief Function which appropriately logs error or remains quiet on
+ * APR_SUCCESS.
+ * @return Returns <code>true</code> if status is an error condition.
+ */
+bool LL_COMMON_API ll_apr_warn_status(apr_status_t status);
+/// There's a whole other APR error-message function if you pass a DSO handle.
+bool LL_COMMON_API ll_apr_warn_status(apr_status_t status, apr_dso_handle_t* handle);
+
+void LL_COMMON_API ll_apr_assert_status(apr_status_t status);
+void LL_COMMON_API ll_apr_assert_status(apr_status_t status, apr_dso_handle_t* handle);
+
+extern "C" LL_COMMON_API apr_pool_t* gAPRPoolp; // Global APR memory pool
 
 /** 
  * @brief initialize the common apr constructs -- apr itself, the
@@ -66,6 +72,9 @@ void LL_COMMON_API ll_init_apr();
  */
 void LL_COMMON_API ll_cleanup_apr();
 
+bool LL_COMMON_API ll_apr_is_initialized();
+
+
 //
 //LL apr_pool
 //manage apr_pool_t, destroy allocated apr_pool in the destruction function.
@@ -163,14 +172,17 @@ public:
 	LLAtomic32<Type>(Type x) {apr_atomic_set32(&mData, apr_uint32_t(x)); };
 	~LLAtomic32<Type>() {};
 
-	operator const Type() { apr_uint32_t data = apr_atomic_read32(&mData); return Type(data); }
+	operator const Type() { return get(); }
 	Type operator =(const Type& x) { apr_atomic_set32(&mData, apr_uint32_t(x)); return Type(mData); }
 	void operator -=(Type x) { apr_atomic_sub32(&mData, apr_uint32_t(x)); }
 	void operator +=(Type x) { apr_atomic_add32(&mData, apr_uint32_t(x)); }
 	Type operator ++(int) { return apr_atomic_inc32(&mData); } // Type++
-	Type operator --(int) { return apr_atomic_dec32(&mData); } // approximately --Type (0 if final is 0, non-zero otherwise)
+	Type operator ++()	  { apr_atomic_inc32(&mData); return get();  } // ++Type
+	Type operator --(int) { const Type result(get()); apr_atomic_dec32(&mData); return result; } // Type-- 
+	Type operator --()	  { return apr_atomic_dec32(&mData); } // approximately --Type (0 if final is 0, non-zero otherwise)
 	
 private:
+	const Type get() { apr_uint32_t data = apr_atomic_read32(&mData); return Type(data); }
 	apr_uint32_t mData;
 };
 
@@ -255,18 +267,5 @@ public:
 //*******************************************************************************************************************************
 };
 
-/**
- * @brief Function which appropriately logs error or remains quiet on
- * APR_SUCCESS.
- * @return Returns <code>true</code> if status is an error condition.
- */
-bool LL_COMMON_API ll_apr_warn_status(apr_status_t status);
-/// There's a whole other APR error-message function if you pass a DSO handle.
-bool LL_COMMON_API ll_apr_warn_status(apr_status_t status, apr_dso_handle_t* handle);
-
-void LL_COMMON_API ll_apr_assert_status(apr_status_t status);
-void LL_COMMON_API ll_apr_assert_status(apr_status_t status, apr_dso_handle_t* handle);
-
-extern "C" LL_COMMON_API apr_pool_t* gAPRPoolp; // Global APR memory pool
 
 #endif // LL_LLAPR_H
diff --git a/indra/llcommon/llcommon.cpp b/indra/llcommon/llcommon.cpp
index 8be9e4f4de..c720df7555 100644
--- a/indra/llcommon/llcommon.cpp
+++ b/indra/llcommon/llcommon.cpp
@@ -29,6 +29,7 @@
 
 #include "llmemory.h"
 #include "llthread.h"
+#include "lltrace.h"
 
 //static
 BOOL LLCommon::sAprInitialized = FALSE;
@@ -44,15 +45,13 @@ void LLCommon::initClass()
 	}
 	LLTimer::initClass();
 	LLThreadSafeRefCount::initThreadSafeRefCount();
-// 	LLWorkerThread::initClass();
-// 	LLFrameCallbackManager::initClass();
+	LLTrace::init();
 }
 
 //static
 void LLCommon::cleanupClass()
 {
-// 	LLFrameCallbackManager::cleanupClass();
-// 	LLWorkerThread::cleanupClass();
+	LLTrace::cleanup();
 	LLThreadSafeRefCount::cleanupThreadSafeRefCount();
 	LLTimer::cleanupClass();
 	if (sAprInitialized)
diff --git a/indra/llcommon/llcriticaldamp.cpp b/indra/llcommon/llcriticaldamp.cpp
index 87d79b1ee0..2f013fe255 100644
--- a/indra/llcommon/llcriticaldamp.cpp
+++ b/indra/llcommon/llcriticaldamp.cpp
@@ -27,18 +27,38 @@
 #include "linden_common.h"
 
 #include "llcriticaldamp.h"
+#include <algorithm>
 
 //-----------------------------------------------------------------------------
 // static members
 //-----------------------------------------------------------------------------
-LLFrameTimer LLCriticalDamp::sInternalTimer;
-std::map<F32, F32> LLCriticalDamp::sInterpolants;
-F32 LLCriticalDamp::sTimeDelta;
+LLFrameTimer LLSmoothInterpolation::sInternalTimer;
+std::vector<LLSmoothInterpolation::Interpolant> LLSmoothInterpolation::sInterpolants;
+F32 LLSmoothInterpolation::sTimeDelta;
+
+// helper functors
+struct LLSmoothInterpolation::CompareTimeConstants
+{
+	bool operator()(const F32& a, const LLSmoothInterpolation::Interpolant& b) const
+	{
+		return a < b.mTimeScale;
+	}
+
+	bool operator()(const LLSmoothInterpolation::Interpolant& a, const F32& b) const
+	{
+		return a.mTimeScale < b; // bottom of a is higher than bottom of b
+	}
+
+	bool operator()(const LLSmoothInterpolation::Interpolant& a, const LLSmoothInterpolation::Interpolant& b) const
+	{
+		return a.mTimeScale < b.mTimeScale; // bottom of a is higher than bottom of b
+	}
+};
 
 //-----------------------------------------------------------------------------
-// LLCriticalDamp()
+// LLSmoothInterpolation()
 //-----------------------------------------------------------------------------
-LLCriticalDamp::LLCriticalDamp()
+LLSmoothInterpolation::LLSmoothInterpolation()
 {
 	sTimeDelta = 0.f;
 }
@@ -47,43 +67,54 @@ LLCriticalDamp::LLCriticalDamp()
 //-----------------------------------------------------------------------------
 // updateInterpolants()
 //-----------------------------------------------------------------------------
-void LLCriticalDamp::updateInterpolants()
+void LLSmoothInterpolation::updateInterpolants()
 {
 	sTimeDelta = sInternalTimer.getElapsedTimeAndResetF32();
 
-	F32 time_constant;
-
-	for (std::map<F32, F32>::iterator iter = sInterpolants.begin();
-		 iter != sInterpolants.end(); iter++)
+	for (S32 i = 0; i < sInterpolants.size(); i++)
 	{
-		time_constant = iter->first;
-		F32 new_interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
-		new_interpolant = llclamp(new_interpolant, 0.f, 1.f);
-		sInterpolants[time_constant] = new_interpolant;
+		Interpolant& interp = sInterpolants[i];
+		interp.mInterpolant = calcInterpolant(interp.mTimeScale);
 	}
 } 
 
 //-----------------------------------------------------------------------------
 // getInterpolant()
 //-----------------------------------------------------------------------------
-F32 LLCriticalDamp::getInterpolant(const F32 time_constant, BOOL use_cache)
+F32 LLSmoothInterpolation::getInterpolant(LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache)
 {
 	if (time_constant == 0.f)
 	{
 		return 1.f;
 	}
 
-	if (use_cache && sInterpolants.count(time_constant))
+	if (use_cache)
 	{
-		return sInterpolants[time_constant];
+		interpolant_vec_t::iterator find_it = std::lower_bound(sInterpolants.begin(), sInterpolants.end(), time_constant.value(), CompareTimeConstants());
+		if (find_it != sInterpolants.end() && find_it->mTimeScale == time_constant) 
+		{
+			return find_it->mInterpolant;
+		}
+		else
+		{
+			Interpolant interp;
+			interp.mTimeScale = time_constant.value();
+			interp.mInterpolant = calcInterpolant(time_constant.value());
+			sInterpolants.insert(find_it, interp);
+			return interp.mInterpolant;
+		}
 	}
-	
-	F32 interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
-	interpolant = llclamp(interpolant, 0.f, 1.f);
-	if (use_cache)
+	else
 	{
-		sInterpolants[time_constant] = interpolant;
+		return calcInterpolant(time_constant.value());
+
 	}
+}
 
-	return interpolant;
+//-----------------------------------------------------------------------------
+// calcInterpolant()
+//-----------------------------------------------------------------------------
+F32 LLSmoothInterpolation::calcInterpolant(F32 time_constant)
+{
+	return llclamp(1.f - powf(2.f, -sTimeDelta / time_constant), 0.f, 1.f);
 }
diff --git a/indra/llcommon/llcriticaldamp.h b/indra/llcommon/llcriticaldamp.h
index 52f052ae25..ab5d4ba6e2 100644
--- a/indra/llcommon/llcriticaldamp.h
+++ b/indra/llcommon/llcriticaldamp.h
@@ -28,26 +28,46 @@
 #ifndef LL_LLCRITICALDAMP_H
 #define LL_LLCRITICALDAMP_H
 
-#include <map>
+#include <vector>
 
 #include "llframetimer.h"
+#include "llunit.h"
 
-class LL_COMMON_API LLCriticalDamp 
+class LL_COMMON_API LLSmoothInterpolation 
 {
 public:
-	LLCriticalDamp();
+	LLSmoothInterpolation();
 
 	// MANIPULATORS
 	static void updateInterpolants();
 
 	// ACCESSORS
-	static F32 getInterpolant(const F32 time_constant, BOOL use_cache = TRUE);
+	static F32 getInterpolant(LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache = true);
 
-protected:	
+	template<typename T> 
+	static T lerp(T a, T b, LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache = true)
+	{
+		F32 interpolant = getInterpolant(time_constant, use_cache);
+		return ((a * (1.f - interpolant)) 
+				+ (b * interpolant));
+	}
+
+protected:
+	static F32 calcInterpolant(F32 time_constant);
+
+	struct CompareTimeConstants;
 	static LLFrameTimer sInternalTimer;	// frame timer for calculating deltas
 
-	static std::map<F32, F32> 	sInterpolants;
+	struct Interpolant
+	{
+		F32 mTimeScale;
+		F32 mInterpolant;
+	};
+	typedef std::vector<Interpolant> interpolant_vec_t;
+	static interpolant_vec_t 	sInterpolants;
 	static F32					sTimeDelta;
 };
 
+typedef LLSmoothInterpolation LLCriticalDamp;
+
 #endif  // LL_LLCRITICALDAMP_H
diff --git a/indra/llcommon/lldate.cpp b/indra/llcommon/lldate.cpp
index 030ef6a3c7..2efe39e158 100644
--- a/indra/llcommon/lldate.cpp
+++ b/indra/llcommon/lldate.cpp
@@ -39,6 +39,7 @@
 
 #include "lltimer.h"
 #include "llstring.h"
+#include "llfasttimer.h"
 
 static const F64 DATE_EPOCH = 0.0;
 
@@ -48,18 +49,15 @@ static const F64 LL_APR_USEC_PER_SEC = 1000000.0;
 
 
 LLDate::LLDate() : mSecondsSinceEpoch(DATE_EPOCH)
-{
-}
+{}
 
 LLDate::LLDate(const LLDate& date) :
 	mSecondsSinceEpoch(date.mSecondsSinceEpoch)
-{
-}
+{}
 
-LLDate::LLDate(F64 seconds_since_epoch) :
-	mSecondsSinceEpoch(seconds_since_epoch)
-{
-}
+LLDate::LLDate(LLUnit<LLUnits::Seconds, F64> seconds_since_epoch) :
+	mSecondsSinceEpoch(seconds_since_epoch.value())
+{}
 
 LLDate::LLDate(const std::string& iso8601_date)
 {
diff --git a/indra/llcommon/lldate.h b/indra/llcommon/lldate.h
index 7ff8b550ad..b62a846147 100644
--- a/indra/llcommon/lldate.h
+++ b/indra/llcommon/lldate.h
@@ -33,6 +33,7 @@
 #include <string>
 
 #include "stdtypes.h"
+#include "llunit.h"
 
 /** 
  * @class LLDate
@@ -56,9 +57,9 @@ public:
 	/** 
 	 * @brief Construct a date from a seconds since epoch value.
 	 *
-	 * @pararm seconds_since_epoch The number of seconds since UTC epoch.
+	 * @param seconds_since_epoch The number of seconds since UTC epoch.
 	 */
-	LLDate(F64 seconds_since_epoch);
+	LLDate(LLUnit<LLUnits::Seconds, F64> seconds_since_epoch);
 
 	/** 
 	 * @brief Construct a date from a string representation
diff --git a/indra/llcommon/lldefs.h b/indra/llcommon/lldefs.h
index 5a4b8325f4..d57b9dccff 100644
--- a/indra/llcommon/lldefs.h
+++ b/indra/llcommon/lldefs.h
@@ -244,5 +244,8 @@ inline void llswap(LLDATATYPE& lhs, LLDATATYPE& rhs)
 	rhs = tmp;
 }
 
+#define LL_GLUE_IMPL(x, y) x##y
+#define LL_GLUE_TOKENS(x, y) LL_GLUE_IMPL(x, y)
+
 #endif // LL_LLDEFS_H
 
diff --git a/indra/llcommon/llerrorlegacy.h b/indra/llcommon/llerrorlegacy.h
index 37cee579cd..097a533b1a 100644
--- a/indra/llcommon/llerrorlegacy.h
+++ b/indra/llcommon/llerrorlegacy.h
@@ -29,6 +29,7 @@
 #define LL_LLERRORLEGACY_H
 
 #include "llpreprocessor.h"
+#include <boost/static_assert.hpp>
 
 /*
 	LEGACY -- DO NOT USE THIS STUFF ANYMORE
@@ -111,6 +112,14 @@ const int LL_ERR_PRICE_MISMATCH = -23018;
 #define llverify(func)			do {if (func) {}} while(0)
 #endif
 
+#ifdef LL_WINDOWS
+#define llstatic_assert(func, msg) static_assert(func, msg)
+#define llstatic_assert_template(type, func, msg) static_assert(func, msg)
+#else
+#define llstatic_assert(func, msg) BOOST_STATIC_ASSERT(func)
+#define llstatic_assert_template(type, func, msg) BOOST_STATIC_ASSERT(sizeof(type) != 0 && func);
+#endif
+
 // handy compile-time assert - enforce those template parameters! 
 #define cassert(expn) typedef char __C_ASSERT__[(expn)?1:-1]   /* Flawfinder: ignore */
 	//XXX: used in two places in llcommon/llskipmap.h
diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index 0855180dcd..1c928b3db8 100644
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -41,7 +41,6 @@
 #include <algorithm>
 // std headers
 #include <typeinfo>
-#include <cassert>
 #include <cmath>
 #include <cctype>
 // external library headers
diff --git a/indra/llcommon/llfasttimer.cpp b/indra/llcommon/llfasttimer.cpp
index 6970c29092..fbffe133f1 100644
--- a/indra/llcommon/llfasttimer.cpp
+++ b/indra/llcommon/llfasttimer.cpp
@@ -32,8 +32,13 @@
 #include "llsingleton.h"
 #include "lltreeiterators.h"
 #include "llsdserialize.h"
+#include "llunit.h"
+#include "llsd.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
 
 #include <boost/bind.hpp>
+#include <queue>
 
 
 #if LL_WINDOWS
@@ -49,37 +54,36 @@
 #error "architecture not supported"
 #endif
 
+namespace LLTrace
+{
+
 //////////////////////////////////////////////////////////////////////////////
 // statics
 
-S32 LLFastTimer::sCurFrameIndex = -1;
-S32 LLFastTimer::sLastFrameIndex = -1;
-U64 LLFastTimer::sLastFrameTime = LLFastTimer::getCPUClockCount64();
-bool LLFastTimer::sPauseHistory = 0;
-bool LLFastTimer::sResetHistory = 0;
-LLFastTimer::CurTimerData LLFastTimer::sCurTimerData;
-BOOL LLFastTimer::sLog = FALSE;
-std::string LLFastTimer::sLogName = "";
-BOOL LLFastTimer::sMetricLog = FALSE;
-LLMutex* LLFastTimer::sLogLock = NULL;
-std::queue<LLSD> LLFastTimer::sLogQueue;
+bool        TimeBlock::sLog		     = false;
+std::string TimeBlock::sLogName         = "";
+bool        TimeBlock::sMetricLog       = false;
 
 #if LL_LINUX || LL_SOLARIS
-U64 LLFastTimer::sClockResolution = 1000000000; // Nanosecond resolution
+U64         TimeBlock::sClockResolution = 1000000000; // Nanosecond resolution
 #else
-U64 LLFastTimer::sClockResolution = 1000000; // Microsecond resolution
+U64         TimeBlock::sClockResolution = 1000000; // Microsecond resolution
 #endif
 
+static LLMutex*			sLogLock = NULL;
+static std::queue<LLSD> sLogQueue;
+
+
 // FIXME: move these declarations to the relevant modules
 
 // helper functions
-typedef LLTreeDFSPostIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_bottom_up_iterator_t;
+typedef LLTreeDFSPostIter<TimeBlock, TimeBlock::child_const_iter> timer_tree_bottom_up_iterator_t;
 
-static timer_tree_bottom_up_iterator_t begin_timer_tree_bottom_up(LLFastTimer::NamedTimer& id) 
+static timer_tree_bottom_up_iterator_t begin_timer_tree_bottom_up(TimeBlock& id) 
 { 
 	return timer_tree_bottom_up_iterator_t(&id, 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1));
+							boost::bind(boost::mem_fn(&TimeBlock::beginChildren), _1), 
+							boost::bind(boost::mem_fn(&TimeBlock::endChildren), _1));
 }
 
 static timer_tree_bottom_up_iterator_t end_timer_tree_bottom_up() 
@@ -87,14 +91,14 @@ static timer_tree_bottom_up_iterator_t end_timer_tree_bottom_up()
 	return timer_tree_bottom_up_iterator_t(); 
 }
 
-typedef LLTreeDFSIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_dfs_iterator_t;
+typedef LLTreeDFSIter<TimeBlock, TimeBlock::child_const_iter> timer_tree_dfs_iterator_t;
 
 
-static timer_tree_dfs_iterator_t begin_timer_tree(LLFastTimer::NamedTimer& id) 
+static timer_tree_dfs_iterator_t begin_timer_tree(TimeBlock& id) 
 { 
 	return timer_tree_dfs_iterator_t(&id, 
-		boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1));
+		boost::bind(boost::mem_fn(&TimeBlock::beginChildren), _1), 
+							boost::bind(boost::mem_fn(&TimeBlock::endChildren), _1));
 }
 
 static timer_tree_dfs_iterator_t end_timer_tree() 
@@ -102,90 +106,48 @@ static timer_tree_dfs_iterator_t end_timer_tree()
 	return timer_tree_dfs_iterator_t(); 
 }
 
-// factory class that creates NamedTimers via static DeclareTimer objects
-class NamedTimerFactory : public LLSingleton<NamedTimerFactory>
-{
-public:
-	NamedTimerFactory()
-	:	mTimerRoot(NULL)
-	{}
 
-	/*virtual */ void initSingleton()
+// sort child timers by name
+struct SortTimerByName
+{
+	bool operator()(const TimeBlock* i1, const TimeBlock* i2)
 	{
-		mTimerRoot = new LLFastTimer::NamedTimer("root");
-		mRootFrameState.setNamedTimer(mTimerRoot);
-		mTimerRoot->setFrameState(&mRootFrameState);
-		mTimerRoot->mParent = mTimerRoot;
-		mTimerRoot->setCollapsed(false);
-		mRootFrameState.mParent = &mRootFrameState;
+		return i1->getName() < i2->getName();
 	}
+};
 
-	~NamedTimerFactory()
+TimeBlock& TimeBlock::getRootTimeBlock()
 	{
-		std::for_each(mTimers.begin(), mTimers.end(), DeletePairedPointer());
-
-		delete mTimerRoot;
+	static TimeBlock root_timer("root", true, NULL);
+	return root_timer;
 	}
 
-	LLFastTimer::NamedTimer& createNamedTimer(const std::string& name, LLFastTimer::FrameState* state)
+void TimeBlock::pushLog(LLSD log)
 	{
-		LLFastTimer::NamedTimer* timer = new LLFastTimer::NamedTimer(name);
-		timer->setFrameState(state);
-		timer->setParent(mTimerRoot);
-		mTimers.insert(std::make_pair(name, timer));
-
-		return *timer;
-	}
+	LLMutexLock lock(sLogLock);
 
-	LLFastTimer::NamedTimer* getTimerByName(const std::string& name)
-	{
-		timer_map_t::iterator found_it = mTimers.find(name);
-		if (found_it != mTimers.end())
-		{
-			return found_it->second;
-		}
-		return NULL;
+	sLogQueue.push(log);
 	}
 
-	LLFastTimer::NamedTimer* getRootTimer() { return mTimerRoot; }
-
-	typedef std::multimap<std::string, LLFastTimer::NamedTimer*> timer_map_t;
-	timer_map_t::iterator beginTimers() { return mTimers.begin(); }
-	timer_map_t::iterator endTimers() { return mTimers.end(); }
-	S32 timerCount() { return mTimers.size(); }
-
-private:
-	timer_map_t mTimers;
-
-	LLFastTimer::NamedTimer*		mTimerRoot;
-	LLFastTimer::FrameState			mRootFrameState;
-};
-
-LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name, bool open )
-:	mTimer(NamedTimerFactory::instance().createNamedTimer(name, &mFrameState))
+void TimeBlock::setLogLock(LLMutex* lock)
 {
-	mTimer.setCollapsed(!open);
+	sLogLock = lock;
 }
 
-LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name)
-:	mTimer(NamedTimerFactory::instance().createNamedTimer(name, &mFrameState))
-{
-}
 
 //static
 #if (LL_DARWIN || LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__))
-U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
+U64 TimeBlock::countsPerSecond()
 {
-	return sClockResolution >> 8;
+	return sClockResolution;
 }
 #else // windows or x86-mac or x86-linux or x86-solaris
-U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
+U64 TimeBlock::countsPerSecond()
 {
 #if LL_FASTTIMER_USE_RDTSC || !LL_WINDOWS
 	//getCPUFrequency returns MHz and sCPUClockFrequency wants to be in Hz
-	static U64 sCPUClockFrequency = U64(LLProcessorInfo().getCPUFrequency()*1000000.0);
+	static LLUnit<LLUnits::Hertz, U64> sCPUClockFrequency = LLProcessorInfo().getCPUFrequency();
 
-	// we drop the low-order byte in our timers, so report a lower frequency
 #else
 	// If we're not using RDTSC, each fasttimer tick is just a performance counter tick.
 	// Not redefining the clock frequency itself (in llprocessor.cpp/calculate_cpu_frequency())
@@ -198,269 +160,185 @@ U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
 		firstcall = false;
 	}
 #endif
-	return sCPUClockFrequency >> 8;
+	return sCPUClockFrequency.value();
 }
 #endif
 
-LLFastTimer::FrameState::FrameState()
-:	mActiveCount(0),
-	mCalls(0),
-	mSelfTimeCounter(0),
-	mParent(NULL),
-	mLastCaller(NULL),
-	mMoveUpTree(false)
-{}
-
-
-LLFastTimer::NamedTimer::NamedTimer(const std::string& name)
-:	mName(name),
-	mCollapsed(true),
-	mParent(NULL),
-	mTotalTimeCounter(0),
-	mCountAverage(0),
-	mCallAverage(0),
-	mNeedsSorting(false),
-	mFrameState(NULL)
-{
-	mCountHistory = new U32[HISTORY_NUM];
-	memset(mCountHistory, 0, sizeof(U32) * HISTORY_NUM);
-	mCallHistory = new U32[HISTORY_NUM];
-	memset(mCallHistory, 0, sizeof(U32) * HISTORY_NUM);
-}
-
-LLFastTimer::NamedTimer::~NamedTimer()
+TimeBlock::TimeBlock(const char* name, bool open, TimeBlock* parent)
+:	TraceType<TimeBlockAccumulator>(name),
+	mCollapsed(true)
 {
-	delete[] mCountHistory;
-	delete[] mCallHistory;
+	setCollapsed(!open);
 }
 
-std::string LLFastTimer::NamedTimer::getToolTip(S32 history_idx)
+TimeBlockTreeNode& TimeBlock::getTreeNode() const
 {
-	F64 ms_multiplier = 1000.0 / (F64)LLFastTimer::countsPerSecond();
-	if (history_idx < 0)
-	{
-		// by default, show average number of call
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getCountAverage() * ms_multiplier), (S32)getCallAverage());
-	}
-	else
-	{
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getHistoricalCount(history_idx) * ms_multiplier), (S32)getHistoricalCalls(history_idx));
+	TimeBlockTreeNode* nodep = LLTrace::get_thread_recorder()->getTimeBlockTreeNode(getIndex());
+	llassert(nodep);
+	return *nodep;
 	}
-}
-
-void LLFastTimer::NamedTimer::setParent(NamedTimer* parent)
-{
-	llassert_always(parent != this);
-	llassert_always(parent != NULL);
-
-	if (mParent)
-	{
-		// subtract our accumulated from previous parent
-		for (S32 i = 0; i < HISTORY_NUM; i++)
-		{
-			mParent->mCountHistory[i] -= mCountHistory[i];
-		}
-
-		// subtract average timing from previous parent
-		mParent->mCountAverage -= mCountAverage;
-
-		std::vector<NamedTimer*>& children = mParent->getChildren();
-		std::vector<NamedTimer*>::iterator found_it = std::find(children.begin(), children.end(), this);
-		if (found_it != children.end())
-		{
-			children.erase(found_it);
-		}
-	}
-
-	mParent = parent;
-	if (parent)
-	{
-		getFrameState().mParent = &parent->getFrameState();
-		parent->getChildren().push_back(this);
-		parent->mNeedsSorting = true;
-	}
-}
-
-S32 LLFastTimer::NamedTimer::getDepth()
-{
-	S32 depth = 0;
-	NamedTimer* timerp = mParent;
-	while(timerp)
-	{
-		depth++;
-		if (timerp->getParent() == timerp) break;
-		timerp = timerp->mParent;
-	}
-	return depth;
-}
-
-// static
-void LLFastTimer::NamedTimer::processTimes()
-{
-	if (sCurFrameIndex < 0) return;
-
-	buildHierarchy();
-	accumulateTimings();
-}
-
-// sort child timers by name
-struct SortTimerByName
-{
-	bool operator()(const LLFastTimer::NamedTimer* i1, const LLFastTimer::NamedTimer* i2)
-	{
-		return i1->getName() < i2->getName();
-	}
-};
 
 //static
-void LLFastTimer::NamedTimer::buildHierarchy()
+void TimeBlock::processTimes()
 {
-	if (sCurFrameIndex < 0 ) return;
+	get_clock_count(); // good place to calculate clock frequency
+	U64 cur_time = getCPUClockCount64();
 
 	// set up initial tree
+	for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(), end_it = LLInstanceTracker<TimeBlock>::endInstances(); 
+		it != end_it; 
+		++it)
 	{
-		for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-		{
-			NamedTimer& timer = *it;
-			if (&timer == NamedTimerFactory::instance().getRootTimer()) continue;
+		TimeBlock& timer = *it;
+		if (&timer == &TimeBlock::getRootTimeBlock()) continue;
 			
 			// bootstrap tree construction by attaching to last timer to be on stack
 			// when this timer was called
-			if (timer.getFrameState().mLastCaller && timer.mParent == NamedTimerFactory::instance().getRootTimer())
+		if (timer.getParent() == &TimeBlock::getRootTimeBlock())
+		{
+			TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
+
+			if (accumulator->mLastCaller)
 			{
-				timer.setParent(timer.getFrameState().mLastCaller->mTimer);
-				// no need to push up tree on first use, flag can be set spuriously
-				timer.getFrameState().mMoveUpTree = false;
+				timer.setParent(accumulator->mLastCaller);
+				accumulator->mParent = accumulator->mLastCaller;
 			}
+				// no need to push up tree on first use, flag can be set spuriously
+			accumulator->mMoveUpTree = false;
 		}
 	}
 
-	// bump timers up tree if they've been flagged as being in the wrong place
+	// bump timers up tree if they have been flagged as being in the wrong place
 	// do this in a bottom up order to promote descendants first before promoting ancestors
 	// this preserves partial order derived from current frame's observations
-	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getRootTimer());
+	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(TimeBlock::getRootTimeBlock());
 		it != end_timer_tree_bottom_up();
 		++it)
 	{
-		NamedTimer* timerp = *it;
+		TimeBlock* timerp = *it;
+
+		// sort timers by time last called, so call graph makes sense
+		TimeBlockTreeNode& tree_node = timerp->getTreeNode();
+		if (tree_node.mNeedsSorting)
+		{
+			std::sort(tree_node.mChildren.begin(), tree_node.mChildren.end(), SortTimerByName());
+		}
+
 		// skip root timer
-		if (timerp == NamedTimerFactory::instance().getRootTimer()) continue;
+		if (timerp != &TimeBlock::getRootTimeBlock())
+		{
+			TimeBlockAccumulator* accumulator = timerp->getPrimaryAccumulator();
 
-		if (timerp->getFrameState().mMoveUpTree)
+			if (accumulator->mMoveUpTree)
 		{
-			// since ancestors have already been visited, reparenting won't affect tree traversal
+				// since ancestors have already been visited, re-parenting won't affect tree traversal
 			//step up tree, bringing our descendants with us
 			LL_DEBUGS("FastTimers") << "Moving " << timerp->getName() << " from child of " << timerp->getParent()->getName() <<
 				" to child of " << timerp->getParent()->getParent()->getName() << LL_ENDL;
 			timerp->setParent(timerp->getParent()->getParent());
-			timerp->getFrameState().mMoveUpTree = false;
+				accumulator->mParent = timerp->getParent();
+				accumulator->mMoveUpTree = false;
 
 			// don't bubble up any ancestors until descendants are done bubbling up
+				// as ancestors may call this timer only on certain paths, so we want to resolve
+				// child-most block locations before their parents
 			it.skipAncestors();
 		}
 	}
-
-	// sort timers by time last called, so call graph makes sense
-	for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer());
-		it != end_timer_tree();
-		++it)
-	{
-		NamedTimer* timerp = (*it);
-		if (timerp->mNeedsSorting)
-		{
-			std::sort(timerp->getChildren().begin(), timerp->getChildren().end(), SortTimerByName());
-		}
-		timerp->mNeedsSorting = false;
-	}
 }
 
-//static
-void LLFastTimer::NamedTimer::accumulateTimings()
-{
-	U32 cur_time = getCPUClockCount32();
-
 	// walk up stack of active timers and accumulate current time while leaving timing structures active
-	LLFastTimer* cur_timer = sCurTimerData.mCurTimer;
+	BlockTimerStackRecord* stack_record			= ThreadTimerStack::getInstance();
+	BlockTimer* cur_timer						= stack_record->mActiveTimer;
+	TimeBlockAccumulator* accumulator = stack_record->mTimeBlock->getPrimaryAccumulator();
+
 	// root defined by parent pointing to self
-	CurTimerData* cur_data = &sCurTimerData;
-	while(cur_timer && cur_timer->mLastTimerData.mCurTimer != cur_timer)
+	while(cur_timer && cur_timer->mParentTimerData.mActiveTimer != cur_timer)
 	{
-		U32 cumulative_time_delta = cur_time - cur_timer->mStartTime;
-		U32 self_time_delta = cumulative_time_delta - cur_data->mChildTime;
-		cur_data->mChildTime = 0;
-		cur_timer->mFrameState->mSelfTimeCounter += self_time_delta;
+		U64 cumulative_time_delta = cur_time - cur_timer->mStartTime;
+		accumulator->mTotalTimeCounter += cumulative_time_delta - (accumulator->mTotalTimeCounter - cur_timer->mBlockStartTotalTimeCounter);
+		accumulator->mSelfTimeCounter += cumulative_time_delta - stack_record->mChildTime;
+		stack_record->mChildTime = 0;
+
 		cur_timer->mStartTime = cur_time;
+		cur_timer->mBlockStartTotalTimeCounter = accumulator->mTotalTimeCounter;
 
-		cur_data = &cur_timer->mLastTimerData;
-		cur_data->mChildTime += cumulative_time_delta;
+		stack_record = &cur_timer->mParentTimerData;
+		accumulator = stack_record->mTimeBlock->getPrimaryAccumulator();
+		cur_timer = stack_record->mActiveTimer;
 
-		cur_timer = cur_timer->mLastTimerData.mCurTimer;
+		stack_record->mChildTime += cumulative_time_delta;
 	}
 
-	// traverse tree in DFS post order, or bottom up
-	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getRootTimer());
-		it != end_timer_tree_bottom_up();
+	// reset for next frame
+	for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(),
+			end_it = LLInstanceTracker<TimeBlock>::endInstances();
+		it != end_it;
 		++it)
 	{
-		NamedTimer* timerp = (*it);
-		timerp->mTotalTimeCounter = timerp->getFrameState().mSelfTimeCounter;
-		for (child_const_iter child_it = timerp->beginChildren(); child_it != timerp->endChildren(); ++child_it)
+		TimeBlock& timer = *it;
+		TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
+
+		accumulator->mLastCaller = NULL;
+		accumulator->mMoveUpTree = false;
+	}
+}
+
+
+std::vector<TimeBlock*>::iterator TimeBlock::beginChildren()
 		{
-			timerp->mTotalTimeCounter += (*child_it)->mTotalTimeCounter;
+	return getTreeNode().mChildren.begin(); 
 		}
 
-		S32 cur_frame = sCurFrameIndex;
-		if (cur_frame >= 0)
+std::vector<TimeBlock*>::iterator TimeBlock::endChildren()
 		{
-			// update timer history
-			int hidx = cur_frame % HISTORY_NUM;
+	return getTreeNode().mChildren.end();
+}
 
-			timerp->mCountHistory[hidx] = timerp->mTotalTimeCounter;
-			timerp->mCountAverage = ((U64)timerp->mCountAverage * cur_frame + timerp->mTotalTimeCounter) / (cur_frame+1);
-			timerp->mCallHistory[hidx] = timerp->getFrameState().mCalls;
-			timerp->mCallAverage = ((U64)timerp->mCallAverage * cur_frame + timerp->getFrameState().mCalls) / (cur_frame+1);
-		}
-	}
+std::vector<TimeBlock*>& TimeBlock::getChildren()
+{
+	return getTreeNode().mChildren;
 }
 
 // static
-void LLFastTimer::NamedTimer::resetFrame()
+void TimeBlock::logStats()
 {
+	// get ready for next frame
 	if (sLog)
 	{ //output current frame counts to performance log
 
 		static S32 call_count = 0;
 		if (call_count % 100 == 0)
 		{
-			LL_DEBUGS("FastTimers") << "countsPerSecond (32 bit): " << countsPerSecond() << LL_ENDL;
-			LL_DEBUGS("FastTimers") << "get_clock_count (64 bit): " << get_clock_count() << llendl;
+			LL_DEBUGS("FastTimers") << "countsPerSecond: " << countsPerSecond() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "LLProcessorInfo().getCPUFrequency() " << LLProcessorInfo().getCPUFrequency() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "getCPUClockCount32() " << getCPUClockCount32() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "getCPUClockCount64() " << getCPUClockCount64() << LL_ENDL;
-			LL_DEBUGS("FastTimers") << "elapsed sec " << ((F64)getCPUClockCount64())/((F64)LLProcessorInfo().getCPUFrequency()*1000000.0) << LL_ENDL;
+			LL_DEBUGS("FastTimers") << "elapsed sec " << ((F64)getCPUClockCount64()) / (LLUnit<LLUnits::Hertz, F64>(LLProcessorInfo().getCPUFrequency())) << LL_ENDL;
 		}
 		call_count++;
 
-		F64 iclock_freq = 1000.0 / countsPerSecond(); // good place to calculate clock frequency
-
-		F64 total_time = 0;
+		LLUnit<LLUnits::Seconds, F64> total_time(0);
 		LLSD sd;
 
 		{
-			for (instance_iter it = beginInstances(); it != endInstances(); ++it)
+			for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(), 
+				end_it = LLInstanceTracker<TimeBlock>::endInstances(); 
+				it != end_it; 
+			++it)
 			{
-				NamedTimer& timer = *it;
-				FrameState& info = timer.getFrameState();
-				sd[timer.getName()]["Time"] = (LLSD::Real) (info.mSelfTimeCounter*iclock_freq);	
-				sd[timer.getName()]["Calls"] = (LLSD::Integer) info.mCalls;
+				TimeBlock& timer = *it;
+				LLTrace::PeriodicRecording& frame_recording = LLTrace::get_frame_recording();
+				sd[timer.getName()]["Time"] = (LLSD::Real) (frame_recording.getLastRecordingPeriod().getSum(timer).value());	
+				sd[timer.getName()]["Calls"] = (LLSD::Integer) (frame_recording.getLastRecordingPeriod().getSum(timer.callCount()));
 				
 				// computing total time here because getting the root timer's getCountHistory
 				// doesn't work correctly on the first frame
-				total_time = total_time + info.mSelfTimeCounter * iclock_freq;
+				total_time += frame_recording.getLastRecordingPeriod().getSum(timer);
 			}
 		}
 
-		sd["Total"]["Time"] = (LLSD::Real) total_time;
+		sd["Total"]["Time"] = (LLSD::Real) total_time.value();
 		sd["Total"]["Calls"] = (LLSD::Integer) 1;
 
 		{		
@@ -469,162 +347,44 @@ void LLFastTimer::NamedTimer::resetFrame()
 		}
 	}
 
-	// reset for next frame
-	for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-	{
-		NamedTimer& timer = *it;
-			
-		FrameState& info = timer.getFrameState();
-		info.mSelfTimeCounter = 0;
-		info.mCalls = 0;
-		info.mLastCaller = NULL;
-		info.mMoveUpTree = false;
-		// update parent pointer in timer state struct
-		if (timer.mParent)
-		{
-			info.mParent = &timer.mParent->getFrameState();
-		}
-	}
-}
-
-//static
-void LLFastTimer::NamedTimer::reset()
-{
-	resetFrame(); // reset frame data
-
-	// walk up stack of active timers and reset start times to current time
-	// effectively zeroing out any accumulated time
-	U32 cur_time = getCPUClockCount32();
-
-	// root defined by parent pointing to self
-	CurTimerData* cur_data = &sCurTimerData;
-	LLFastTimer* cur_timer = cur_data->mCurTimer;
-	while(cur_timer && cur_timer->mLastTimerData.mCurTimer != cur_timer)
-	{
-		cur_timer->mStartTime = cur_time;
-		cur_data->mChildTime = 0;
-
-		cur_data = &cur_timer->mLastTimerData;
-		cur_timer = cur_data->mCurTimer;
-	}
-
-	// reset all history
-	{
-		for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-		{
-			NamedTimer& timer = *it;
-			if (&timer != NamedTimerFactory::instance().getRootTimer()) 
-			{
-				timer.setParent(NamedTimerFactory::instance().getRootTimer());
-			}
-			
-			timer.mCountAverage = 0;
-			timer.mCallAverage = 0;
-			memset(timer.mCountHistory, 0, sizeof(U32) * HISTORY_NUM);
-			memset(timer.mCallHistory, 0, sizeof(U32) * HISTORY_NUM);
-		}
-	}
-
-	sLastFrameIndex = 0;
-	sCurFrameIndex = 0;
-}
-
-U32 LLFastTimer::NamedTimer::getHistoricalCount(S32 history_index) const
-{
-	S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM;
-	return mCountHistory[history_idx];
-}
-
-U32 LLFastTimer::NamedTimer::getHistoricalCalls(S32 history_index ) const
-{
-	S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM;
-	return mCallHistory[history_idx];
-}
-
-LLFastTimer::FrameState& LLFastTimer::NamedTimer::getFrameState() const
-{
-	return *mFrameState;
-}
-
-std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::beginChildren()
-{ 
-	return mChildren.begin(); 
-}
-
-std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::endChildren()
-{
-	return mChildren.end();
-}
-
-std::vector<LLFastTimer::NamedTimer*>& LLFastTimer::NamedTimer::getChildren()
-{
-	return mChildren;
-}
-
-//static
-void LLFastTimer::nextFrame()
-{
-	countsPerSecond(); // good place to calculate clock frequency
-	U64 frame_time = getCPUClockCount64();
-	if ((frame_time - sLastFrameTime) >> 8 > 0xffffffff)
-	{
-		llinfos << "Slow frame, fast timers inaccurate" << llendl;
-	}
-
-	if (!sPauseHistory)
-	{
-		NamedTimer::processTimes();
-		sLastFrameIndex = sCurFrameIndex++;
-	}
-	
-	// get ready for next frame
-	NamedTimer::resetFrame();
-	sLastFrameTime = frame_time;
 }
 
 //static
-void LLFastTimer::dumpCurTimes()
+void TimeBlock::dumpCurTimes()
 {
-	// accumulate timings, etc.
-	NamedTimer::processTimes();
-	
-	F64 clock_freq = (F64)countsPerSecond();
-	F64 iclock_freq = 1000.0 / clock_freq; // clock_ticks -> milliseconds
+	LLTrace::PeriodicRecording& frame_recording = LLTrace::get_frame_recording();
+	LLTrace::Recording& last_frame_recording = frame_recording.getLastRecordingPeriod();
 
 	// walk over timers in depth order and output timings
-	for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer());
+	for(timer_tree_dfs_iterator_t it = begin_timer_tree(TimeBlock::getRootTimeBlock());
 		it != end_timer_tree();
 		++it)
 	{
-		NamedTimer* timerp = (*it);
-		F64 total_time_ms = ((F64)timerp->getHistoricalCount(0) * iclock_freq);
+		TimeBlock* timerp = (*it);
+		LLUnit<LLUnits::Seconds, F64> total_time_ms = last_frame_recording.getSum(*timerp);
+		U32 num_calls = last_frame_recording.getSum(timerp->callCount());
+
 		// Don't bother with really brief times, keep output concise
 		if (total_time_ms < 0.1) continue;
 
 		std::ostringstream out_str;
-		for (S32 i = 0; i < timerp->getDepth(); i++)
+		TimeBlock* parent_timerp = timerp;
+		while(parent_timerp && parent_timerp != parent_timerp->getParent())
 		{
 			out_str << "\t";
+			parent_timerp = parent_timerp->getParent();
 		}
 
-
 		out_str << timerp->getName() << " " 
-			<< std::setprecision(3) << total_time_ms << " ms, "
-			<< timerp->getHistoricalCalls(0) << " calls";
+			<< std::setprecision(3) << total_time_ms.as<LLUnits::Milliseconds>().value() << " ms, "
+			<< num_calls << " calls";
 
 		llinfos << out_str.str() << llendl;
 	}
 }
 
 //static 
-void LLFastTimer::reset()
-{
-	NamedTimer::reset();
-}
-
-
-//static
-void LLFastTimer::writeLog(std::ostream& os)
+void TimeBlock::writeLog(std::ostream& os)
 {
 	while (!sLogQueue.empty())
 	{
@@ -635,22 +395,59 @@ void LLFastTimer::writeLog(std::ostream& os)
 	}
 }
 
-//static
-const LLFastTimer::NamedTimer* LLFastTimer::getTimerByName(const std::string& name)
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// TimeBlockAccumulator
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+TimeBlockAccumulator::TimeBlockAccumulator() 
+:	mTotalTimeCounter(0),
+	mSelfTimeCounter(0),
+	mStartTotalTimeCounter(0),
+	mCalls(0),
+	mLastCaller(NULL),
+	mActiveCount(0),
+	mMoveUpTree(false),
+	mParent(NULL)
+{}
+
+void TimeBlockAccumulator::addSamples( const TimeBlockAccumulator& other )
 {
-	return NamedTimerFactory::instance().getTimerByName(name);
+	mTotalTimeCounter += other.mTotalTimeCounter - other.mStartTotalTimeCounter;
+	mSelfTimeCounter += other.mSelfTimeCounter;
+	mCalls += other.mCalls;
+	mLastCaller = other.mLastCaller;
+	mActiveCount = other.mActiveCount;
+	mMoveUpTree = other.mMoveUpTree;
+	mParent = other.mParent;
 }
 
-LLFastTimer::LLFastTimer(LLFastTimer::FrameState* state)
-:	mFrameState(state)
+void TimeBlockAccumulator::reset( const TimeBlockAccumulator* other )
 {
-	U32 start_time = getCPUClockCount32();
-	mStartTime = start_time;
-	mFrameState->mActiveCount++;
-	LLFastTimer::sCurTimerData.mCurTimer = this;
-	LLFastTimer::sCurTimerData.mFrameState = mFrameState;
-	LLFastTimer::sCurTimerData.mChildTime = 0;
-	mLastTimerData = LLFastTimer::sCurTimerData;
+	mCalls = 0;
+	mSelfTimeCounter = 0;
+
+	if (other)
+	{
+		mStartTotalTimeCounter = other->mTotalTimeCounter;
+		mTotalTimeCounter = mStartTotalTimeCounter;
+
+		mLastCaller = other->mLastCaller;
+		mActiveCount = other->mActiveCount;
+		mMoveUpTree = other->mMoveUpTree;
+		mParent = other->mParent;
+	}
+	else
+{
+		mStartTotalTimeCounter = mTotalTimeCounter;
+	}
+}
+
+LLUnit<LLUnits::Seconds, F64> BlockTimer::getElapsedTime()
+{
+	U64 total_time = TimeBlock::getCPUClockCount64() - mStartTime;
+
+	return (F64)total_time / (F64)TimeBlock::countsPerSecond();
 }
 
 
+} // namespace LLTrace
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index e42e549df5..32a0629a87 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -28,214 +28,98 @@
 #define LL_FASTTIMER_H
 
 #include "llinstancetracker.h"
+#include "lltrace.h"
 
 #define FAST_TIMER_ON 1
-#define DEBUG_FAST_TIMER_THREADS 1
+#define LL_FASTTIMER_USE_RDTSC 1
 
 class LLMutex;
 
-#include <queue>
-#include "llsd.h"
-
-#define LL_FASTTIMER_USE_RDTSC 1
-
+namespace LLTrace
+{
 
-LL_COMMON_API void assert_main_thread();
+struct BlockTimerStackRecord
+{
+	class BlockTimer*	mActiveTimer;
+	class TimeBlock*	mTimeBlock;
+	U64					mChildTime;
+};
 
-class LL_COMMON_API LLFastTimer
+class ThreadTimerStack 
+:	public BlockTimerStackRecord, 
+	public LLThreadLocalSingleton<ThreadTimerStack>
 {
-public:
-	class NamedTimer;
+	friend class LLThreadLocalSingleton<ThreadTimerStack>;
+	ThreadTimerStack() 
+	{}
 
-	struct LL_COMMON_API FrameState
-	{
-		FrameState();
-		void setNamedTimer(NamedTimer* timerp) { mTimer = timerp; }
-
-		U32 				mSelfTimeCounter;
-		U32 				mCalls;
-		FrameState*			mParent;		// info for caller timer
-		FrameState*			mLastCaller;	// used to bootstrap tree construction
-		NamedTimer*			mTimer;
-		U16					mActiveCount;	// number of timers with this ID active on stack
-		bool				mMoveUpTree;	// needs to be moved up the tree of timers at the end of frame
-	};
-
-	// stores a "named" timer instance to be reused via multiple LLFastTimer stack instances
-	class LL_COMMON_API NamedTimer
-	:	public LLInstanceTracker<NamedTimer>
+public:
+	ThreadTimerStack& operator=(const BlockTimerStackRecord& other)
 	{
-		friend class DeclareTimer;
-	public:
-		~NamedTimer();
-
-		enum { HISTORY_NUM = 300 };
-
-		const std::string& getName() const { return mName; }
-		NamedTimer* getParent() const { return mParent; }
-		void setParent(NamedTimer* parent);
-		S32 getDepth();
-		std::string getToolTip(S32 history_index = -1);
-
-		typedef std::vector<NamedTimer*>::const_iterator child_const_iter;
-		child_const_iter beginChildren();
-		child_const_iter endChildren();
-		std::vector<NamedTimer*>& getChildren();
-
-		void setCollapsed(bool collapsed) { mCollapsed = collapsed; }
-		bool getCollapsed() const { return mCollapsed; }
-
-		U32 getCountAverage() const { return mCountAverage; }
-		U32 getCallAverage() const { return mCallAverage; }
-
-		U32 getHistoricalCount(S32 history_index = 0) const;
-		U32 getHistoricalCalls(S32 history_index = 0) const;
-
-		void setFrameState(FrameState* state) { mFrameState = state; state->setNamedTimer(this); }
-		FrameState& getFrameState() const;
-
-	private:
-		friend class LLFastTimer;
-		friend class NamedTimerFactory;
-
-		//
-		// methods
-		//
-		NamedTimer(const std::string& name);
-		// recursive call to gather total time from children
-		static void accumulateTimings();
-
-		// updates cumulative times and hierarchy,
-		// can be called multiple times in a frame, at any point
-		static void processTimes();
-
-		static void buildHierarchy();
-		static void resetFrame();
-		static void reset();
-
-		//
-		// members
-		//
-		FrameState*		mFrameState;
-
-		std::string	mName;
-
-		U32 		mTotalTimeCounter;
-
-		U32 		mCountAverage;
-		U32			mCallAverage;
+		BlockTimerStackRecord::operator=(other);
+		return *this;
+	}
+};
 
-		U32*		mCountHistory;
-		U32*		mCallHistory;
+class BlockTimer
+{
+public:
+	friend class TimeBlock;
+	typedef BlockTimer self_t;
+	typedef class TimeBlock DeclareTimer;
 
-		// tree structure
-		NamedTimer*					mParent;				// NamedTimer of caller(parent)
-		std::vector<NamedTimer*>	mChildren;
-		bool						mCollapsed;				// don't show children
-		bool						mNeedsSorting;			// sort children whenever child added
-	};
+	BlockTimer(TimeBlock& timer);
+	~BlockTimer();
 
-	// used to statically declare a new named timer
-	class LL_COMMON_API DeclareTimer
-	:	public LLInstanceTracker<DeclareTimer>
-	{
-		friend class LLFastTimer;
-	public:
-		DeclareTimer(const std::string& name, bool open);
-		DeclareTimer(const std::string& name);
+	LLUnit<LLUnits::Seconds, F64> getElapsedTime();
 
-		NamedTimer& getNamedTimer() { return mTimer; }
+private:
 
-	private:
-		FrameState		mFrameState;
-		NamedTimer&		mTimer;
-	};
+	U64						mStartTime;
+	U64						mBlockStartTotalTimeCounter;
+	BlockTimerStackRecord	mParentTimerData;
+};
 
+// stores a "named" timer instance to be reused via multiple BlockTimer stack instances
+class TimeBlock 
+:	public TraceType<TimeBlockAccumulator>,
+	public LLInstanceTracker<TimeBlock>
+{
 public:
-	LLFastTimer(LLFastTimer::FrameState* state);
-
-	LL_FORCE_INLINE LLFastTimer(LLFastTimer::DeclareTimer& timer)
-	:	mFrameState(&timer.mFrameState)
-	{
-#if FAST_TIMER_ON
-		LLFastTimer::FrameState* frame_state = mFrameState;
-		mStartTime = getCPUClockCount32();
-
-		frame_state->mActiveCount++;
-		frame_state->mCalls++;
-		// keep current parent as long as it is active when we are
-		frame_state->mMoveUpTree |= (frame_state->mParent->mActiveCount == 0);
-
-		LLFastTimer::CurTimerData* cur_timer_data = &LLFastTimer::sCurTimerData;
-		mLastTimerData = *cur_timer_data;
-		cur_timer_data->mCurTimer = this;
-		cur_timer_data->mFrameState = frame_state;
-		cur_timer_data->mChildTime = 0;
-#endif
-#if DEBUG_FAST_TIMER_THREADS
-#if !LL_RELEASE
-		assert_main_thread();
-#endif
-#endif
-	}
+	TimeBlock(const char* name, bool open = false, TimeBlock* parent = &getRootTimeBlock());
 
-	LL_FORCE_INLINE ~LLFastTimer()
-	{
-#if FAST_TIMER_ON
-		LLFastTimer::FrameState* frame_state = mFrameState;
-		U32 total_time = getCPUClockCount32() - mStartTime;
-
-		frame_state->mSelfTimeCounter += total_time - LLFastTimer::sCurTimerData.mChildTime;
-		frame_state->mActiveCount--;
+	TimeBlockTreeNode& getTreeNode() const;
+	TimeBlock* getParent() const { return getTreeNode().getParent(); }
+	void setParent(TimeBlock* parent) { getTreeNode().setParent(parent); }
 
-		// store last caller to bootstrap tree creation
-		// do this in the destructor in case of recursion to get topmost caller
-		frame_state->mLastCaller = mLastTimerData.mFrameState;
+	typedef std::vector<TimeBlock*>::iterator child_iter;
+	typedef std::vector<TimeBlock*>::const_iterator child_const_iter;
+	child_iter beginChildren();
+	child_iter endChildren();
+	std::vector<TimeBlock*>& getChildren();
 
-		// we are only tracking self time, so subtract our total time delta from parents
-		mLastTimerData.mChildTime += total_time;
+	void setCollapsed(bool collapsed)	{ mCollapsed = collapsed; }
+	bool getCollapsed() const			{ return mCollapsed; }
 
-		LLFastTimer::sCurTimerData = mLastTimerData;
-#endif
+	TraceType<TimeBlockAccumulator::CallCountAspect>& callCount() 
+	{ 
+		return static_cast<TraceType<TimeBlockAccumulator::CallCountAspect>&>(*(TraceType<TimeBlockAccumulator>*)this);
 	}
 
-public:
-	static LLMutex*			sLogLock;
-	static std::queue<LLSD> sLogQueue;
-	static BOOL				sLog;
-	static BOOL				sMetricLog;
-	static std::string		sLogName;
-	static bool 			sPauseHistory;
-	static bool 			sResetHistory;
+	TraceType<TimeBlockAccumulator::SelfTimeAspect>& selfTime() 
+	{ 
+		return static_cast<TraceType<TimeBlockAccumulator::SelfTimeAspect>&>(*(TraceType<TimeBlockAccumulator>*)this);
+	}
 
-	// call this once a frame to reset timers
-	static void nextFrame();
+	static TimeBlock& getRootTimeBlock();
+	static void pushLog(LLSD sd);
+	static void setLogLock(LLMutex* mutex);
+	static void writeLog(std::ostream& os);
 
 	// dumps current cumulative frame stats to log
 	// call nextFrame() to reset timers
 	static void dumpCurTimes();
 
-	// call this to reset timer hierarchy, averages, etc.
-	static void reset();
-
-	static U64 countsPerSecond();
-	static S32 getLastFrameIndex() { return sLastFrameIndex; }
-	static S32 getCurFrameIndex() { return sCurFrameIndex; }
-
-	static void writeLog(std::ostream& os);
-	static const NamedTimer* getTimerByName(const std::string& name);
-
-	struct CurTimerData
-	{
-		LLFastTimer*	mCurTimer;
-		FrameState*		mFrameState;
-		U32				mChildTime;
-	};
-	static CurTimerData		sCurTimerData;
-
-private:
-
-
 	//////////////////////////////////////////////////////////////////////////////
 	//
 	// Important note: These implementations must be FAST!
@@ -258,14 +142,14 @@ private:
 	//#undef _interlockedbittestandset
 	//#undef _interlockedbittestandreset
 
-	//inline U32 LLFastTimer::getCPUClockCount32()
+	//inline U32 TimeBlock::getCPUClockCount32()
 	//{
 	//	U64 time_stamp = __rdtsc();
 	//	return (U32)(time_stamp >> 8);
 	//}
 	//
 	//// return full timer value, *not* shifted by 8 bits
-	//inline U64 LLFastTimer::getCPUClockCount64()
+	//inline U64 TimeBlock::getCPUClockCount64()
 	//{
 	//	return __rdtsc();
 	//}
@@ -305,7 +189,7 @@ private:
 	}
 
 #else
-	//LL_COMMON_API U64 get_clock_count(); // in lltimer.cpp
+	//U64 get_clock_count(); // in lltimer.cpp
 	// These use QueryPerformanceCounter, which is arguably fine and also works on AMD architectures.
 	static U32 getCPUClockCount32()
 	{
@@ -372,18 +256,71 @@ private:
 
 #endif
 
-	static U64 sClockResolution;
+	static U64 countsPerSecond();
+
+	// updates cumulative times and hierarchy,
+	// can be called multiple times in a frame, at any point
+	static void processTimes();
 
-	static S32				sCurFrameIndex;
-	static S32				sLastFrameIndex;
-	static U64				sLastFrameTime;
+	// call this once a frame to periodically log timers
+	static void logStats();
 
-	U32							mStartTime;
-	LLFastTimer::FrameState*	mFrameState;
-	LLFastTimer::CurTimerData	mLastTimerData;
+	bool						mCollapsed;				// don't show children
 
+	// statics
+	static std::string							sLogName;
+	static bool									sMetricLog,
+												sLog;	
+	static U64									sClockResolution;
 };
 
-typedef class LLFastTimer LLFastTimer;
+LL_FORCE_INLINE BlockTimer::BlockTimer(TimeBlock& timer)
+{
+#if FAST_TIMER_ON
+	mStartTime = TimeBlock::getCPUClockCount64();
+
+	BlockTimerStackRecord* cur_timer_data = ThreadTimerStack::getIfExists();
+	TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
+	accumulator->mActiveCount++;
+	mBlockStartTotalTimeCounter = accumulator->mTotalTimeCounter;
+	// keep current parent as long as it is active when we are
+	accumulator->mMoveUpTree |= (accumulator->mParent->getPrimaryAccumulator()->mActiveCount == 0);
+
+	// store top of stack
+	mParentTimerData = *cur_timer_data;
+	// push new information
+	cur_timer_data->mActiveTimer = this;
+	cur_timer_data->mTimeBlock = &timer;
+	cur_timer_data->mChildTime = 0;
+#endif
+}
+
+LL_FORCE_INLINE BlockTimer::~BlockTimer()
+{
+#if FAST_TIMER_ON
+	U64 total_time = TimeBlock::getCPUClockCount64() - mStartTime;
+	BlockTimerStackRecord* cur_timer_data = ThreadTimerStack::getIfExists();
+	TimeBlockAccumulator* accumulator = cur_timer_data->mTimeBlock->getPrimaryAccumulator();
+
+	accumulator->mCalls++;
+	accumulator->mTotalTimeCounter += total_time - (accumulator->mTotalTimeCounter - mBlockStartTotalTimeCounter);
+	accumulator->mSelfTimeCounter += total_time - cur_timer_data->mChildTime;
+	accumulator->mActiveCount--;
+
+	// store last caller to bootstrap tree creation
+	// do this in the destructor in case of recursion to get topmost caller
+	accumulator->mLastCaller = mParentTimerData.mTimeBlock;
+
+	// we are only tracking self time, so subtract our total time delta from parents
+	mParentTimerData.mChildTime += total_time;
+
+	//pop stack
+	*cur_timer_data = mParentTimerData;
+#endif
+}
+
+}
+
+typedef LLTrace::BlockTimer LLFastTimer; 
 
 #endif // LL_LLFASTTIMER_H
diff --git a/indra/llcommon/llfile.cpp b/indra/llcommon/llfile.cpp
index c51d042a3d..5917d7a420 100644
--- a/indra/llcommon/llfile.cpp
+++ b/indra/llcommon/llfile.cpp
@@ -28,7 +28,7 @@
  */
 
 #if LL_WINDOWS
-#include <windows.h>
+#include "llwin32headerslean.h"
 #include <stdlib.h>                 // Windows errno
 #else
 #include <errno.h>
diff --git a/indra/llcommon/llfindlocale.cpp b/indra/llcommon/llfindlocale.cpp
index cd7c0c7c09..f019bd0c64 100644
--- a/indra/llcommon/llfindlocale.cpp
+++ b/indra/llcommon/llfindlocale.cpp
@@ -33,7 +33,7 @@
 #include <ctype.h>
 
 #ifdef WIN32
-#include <windows.h>
+#include "llwin32headers.h"
 #include <winnt.h>
 #endif
 
diff --git a/indra/llcommon/llinitparam.cpp b/indra/llcommon/llinitparam.cpp
index db72aa19b9..d72e10d2fa 100644
--- a/indra/llcommon/llinitparam.cpp
+++ b/indra/llcommon/llinitparam.cpp
@@ -28,10 +28,17 @@
 #include "linden_common.h"
 
 #include "llinitparam.h"
+#include "llformat.h"
 
 
 namespace LLInitParam
 {
+
+	predicate_rule_t default_parse_rules() 
+	{ 
+		return ll_make_predicate(PROVIDED) && !ll_make_predicate(EMPTY);
+	}
+
 	//
 	// Param
 	//
@@ -164,6 +171,9 @@ namespace LLInitParam
 
 	bool BaseBlock::validateBlock(bool emit_errors) const
 	{
+		// only validate block when it hasn't already passed validation with current data
+		if (!mValidated)
+		{
 		const BlockDescriptor& block_data = mostDerivedBlockDescriptor();
 		for (BlockDescriptor::param_validation_list_t::const_iterator it = block_data.mValidationList.begin(); it != block_data.mValidationList.end(); ++it)
 		{
@@ -177,11 +187,18 @@ namespace LLInitParam
 				return false;
 			}
 		}
-		return true;
+			mValidated = true;
+		}
+		return mValidated;
 	}
 
-	void BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const LLInitParam::BaseBlock* diff_block) const
+	bool BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const LLInitParam::BaseBlock* diff_block) const
 	{
+		bool serialized = false;
+		if (!predicate_rule.check(ll_make_predicate(PROVIDED, isProvided())))
+		{
+			return false;
+		}
 		// named param is one like LLView::Params::follows
 		// unnamed param is like LLView::Params::rect - implicit
 		const BlockDescriptor& block_data = mostDerivedBlockDescriptor();
@@ -193,15 +210,10 @@ namespace LLInitParam
 			param_handle_t param_handle = (*it)->mParamHandle;
 			const Param* param = getParamFromHandle(param_handle);
 			ParamDescriptor::serialize_func_t serialize_func = (*it)->mSerializeFunc;
-			if (serialize_func)
+			if (serialize_func && predicate_rule.check(ll_make_predicate(PROVIDED, param->anyProvided())))
 			{
 				const Param* diff_param = diff_block ? diff_block->getParamFromHandle(param_handle) : NULL;
-				// each param descriptor remembers its serial number
-				// so we can inspect the same param under different names
-				// and see that it has the same number
-				name_stack.push_back(std::make_pair("", true));
-				serialize_func(*param, parser, name_stack, diff_param);
-				name_stack.pop_back();
+				serialized |= serialize_func(*param, parser, name_stack, predicate_rule, diff_param);
 			}
 		}
 
@@ -212,7 +224,7 @@ namespace LLInitParam
 			param_handle_t param_handle = it->second->mParamHandle;
 			const Param* param = getParamFromHandle(param_handle);
 			ParamDescriptor::serialize_func_t serialize_func = it->second->mSerializeFunc;
-			if (serialize_func && param->anyProvided())
+			if (serialize_func && predicate_rule.check(ll_make_predicate(PROVIDED, param->anyProvided())))
 			{
 				// Ensure this param has not already been serialized
 				// Prevents <rect> from being serialized as its own tag.
@@ -237,10 +249,17 @@ namespace LLInitParam
 
 				name_stack.push_back(std::make_pair(it->first, !duplicate));
 				const Param* diff_param = diff_block ? diff_block->getParamFromHandle(param_handle) : NULL;
-				serialize_func(*param, parser, name_stack, diff_param);
+				serialized |= serialize_func(*param, parser, name_stack, predicate_rule, diff_param);
 				name_stack.pop_back();
 			}
 		}
+
+		if (!serialized && predicate_rule.check(ll_make_predicate(EMPTY)))
+		{
+			serialized |= parser.writeValue(Flag(), name_stack);
+		}
+		// was anything serialized in this block?
+		return serialized;
 	}
 
 	bool BaseBlock::inspectBlock(Parser& parser, Parser::name_stack_t name_stack, S32 min_count, S32 max_count) const
@@ -359,7 +378,7 @@ namespace LLInitParam
 	}
 
 	//static 
-	void BaseBlock::addParam(BlockDescriptor& block_data, const ParamDescriptorPtr in_param, const char* char_name)
+	void BaseBlock::addParam(BlockDescriptor& block_data, ParamDescriptorPtr in_param, const char* char_name)
 	{
 		// create a copy of the param descriptor in mAllParams
 		// so other data structures can store a pointer to it
diff --git a/indra/llcommon/llinitparam.h b/indra/llcommon/llinitparam.h
index 0dd6030fa2..3e18287a6f 100644
--- a/indra/llcommon/llinitparam.h
+++ b/indra/llcommon/llinitparam.h
@@ -29,14 +29,15 @@
 #define LL_LLPARAM_H
 
 #include <vector>
+#include <list>
 #include <boost/function.hpp>
 #include <boost/type_traits/is_convertible.hpp>
 #include <boost/type_traits/is_enum.hpp>
 #include <boost/unordered_map.hpp>
-#include <boost/shared_ptr.hpp>
 
 #include "llerror.h"
 #include "llstl.h"
+#include "llpredicate.h"
 
 namespace LLInitParam
 {
@@ -341,6 +342,19 @@ namespace LLInitParam
 
 	class Param;
 
+	enum ESerializePredicates
+	{
+		PROVIDED,
+		REQUIRED,
+		VALID,
+		HAS_DEFAULT_VALUE,
+		EMPTY
+	};
+
+	typedef LLPredicate::Rule<ESerializePredicates> predicate_rule_t;
+
+	predicate_rule_t default_parse_rules();
+
 	// various callbacks and constraints associated with an individual param
 	struct LL_COMMON_API ParamDescriptor
 	{
@@ -351,8 +365,8 @@ namespace LLInitParam
 
 		typedef bool(*merge_func_t)(Param&, const Param&, bool);
 		typedef bool(*deserialize_func_t)(Param&, Parser&, const Parser::name_stack_range_t&, bool);
-		typedef void(*serialize_func_t)(const Param&, Parser&, Parser::name_stack_t&, const Param* diff_param);
-		typedef void(*inspect_func_t)(const Param&, Parser&, Parser::name_stack_t&, S32 min_count, S32 max_count);
+		typedef bool(*serialize_func_t)(const Param&, Parser&, Parser::name_stack_t&, const predicate_rule_t, const Param*);
+		typedef void(*inspect_func_t)(const Param&, Parser&, Parser::name_stack_t&, S32, S32);
 		typedef bool(*validation_func_t)(const Param*);
 
 		ParamDescriptor(param_handle_t p, 
@@ -379,7 +393,7 @@ namespace LLInitParam
 		UserData*			mUserData;
 	};
 
-	typedef boost::shared_ptr<ParamDescriptor> ParamDescriptorPtr;
+	typedef ParamDescriptor* ParamDescriptorPtr;
 
 	// each derived Block class keeps a static data structure maintaining offsets to various params
 	class LL_COMMON_API BlockDescriptor
@@ -532,12 +546,28 @@ namespace LLInitParam
 		LOG_CLASS(BaseBlock);
 		friend class Param;
 
+		BaseBlock()
+		:	mValidated(false),
+			mParamProvided(false)
+		{}
+
 		virtual ~BaseBlock() {}
 		bool submitValue(Parser::name_stack_t& name_stack, Parser& p, bool silent=false);
 
 		param_handle_t getHandleFromParam(const Param* param) const;
 		bool validateBlock(bool emit_errors = true) const;
 
+		bool isProvided() const
+		{
+			return mParamProvided;
+		}
+
+		bool isValid() const
+		{
+			return validateBlock(false);
+		}
+
+
 		Param* getParamFromHandle(const param_handle_t param_handle)
 		{
 			if (param_handle == 0) return NULL;
@@ -555,10 +585,19 @@ namespace LLInitParam
 		void addSynonym(Param& param, const std::string& synonym);
 
 		// Blocks can override this to do custom tracking of changes
-		virtual void paramChanged(const Param& changed_param, bool user_provided) {}
+		virtual void paramChanged(const Param& changed_param, bool user_provided) 
+		{
+			if (user_provided)
+			{
+				// a child param has been explicitly changed
+				// so *some* aspect of this block is now provided
+				mValidated = false;
+				mParamProvided = true;
+			}
+		}
 
 		bool deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack_range, bool new_name);
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const;
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t rule, const BaseBlock* diff_block = NULL) const;
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const;
 
 		virtual const BlockDescriptor& mostDerivedBlockDescriptor() const { return selfBlockDescriptor(); }
@@ -597,6 +636,9 @@ namespace LLInitParam
 			return sBlockDescriptor;
 		}
 
+		mutable bool 	mValidated; // lazy validation flag
+		bool			mParamProvided;
+
 	private:
 		const std::string& getParamName(const BlockDescriptor& block_data, const Param* paramp) const;
 	};
@@ -736,13 +778,11 @@ namespace LLInitParam
 		typedef ParamValue<T, NAME_VALUE_LOOKUP, true>	self_t;
 
 		ParamValue() 
-		:	T(),
-			mValidated(false)
+		:	T()
 		{}
 
 		ParamValue(value_assignment_t other)
-		:	T(other),
-			mValidated(false)
+		:	T(other)
 		{}
 
 		void setValue(value_assignment_t val)
@@ -784,9 +824,6 @@ namespace LLInitParam
 
 			return *this;
 		}
-
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
 	};
 
 	template<typename NAME_VALUE_LOOKUP>
@@ -884,12 +921,14 @@ namespace LLInitParam
 
 		bool isProvided() const { return Param::anyProvided(); }
 
+		bool isValid() const { return true; }
+
 		static bool deserializeParam(Param& param, Parser& parser, const Parser::name_stack_range_t& name_stack_range, bool new_name)
 		{ 
 			self_t& typed_param = static_cast<self_t&>(param);
 			// no further names in stack, attempt to parse value now
 			if (name_stack_range.first == name_stack_range.second)
-			{	
+			{
 				std::string name;
 
 				// try to parse a known named value
@@ -905,17 +944,30 @@ namespace LLInitParam
 				else if (parser.readValue(typed_param.getValue()))
 				{
 					typed_param.clearValueName();
-					typed_param.setProvided();
-					return true;
-				}
+							typed_param.setProvided();
+							return true;
+						}
 			}
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+			const self_t* diff_typed_param = static_cast<const self_t*>(diff_param);
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+			if (diff_typed_param && ParamCompare<T>::equals(typed_param.getValue(), diff_typed_param->getValue()))
+			{
+				predicate.set(HAS_DEFAULT_VALUE);
+			}
+
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, false);
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			if (!name_stack.empty())
 			{
@@ -928,23 +980,25 @@ namespace LLInitParam
 
 			if (!key.empty())
 			{
-				if (!diff_param || !ParamCompare<std::string>::equals(static_cast<const self_t*>(diff_param)->getValueName(), key))
+				if (!diff_typed_param || !ParamCompare<std::string>::equals(diff_typed_param->getValueName(), key))
 				{
-					parser.writeValue(key, name_stack);
+					serialized = parser.writeValue(key, name_stack);
 				}
 			}
 			// then try to serialize value directly
-			else if (!diff_param || !ParamCompare<T>::equals(typed_param.getValue(), static_cast<const self_t*>(diff_param)->getValue()))
+			else if (!diff_typed_param || ParamCompare<T>::equals(typed_param.getValue(), diff_typed_param->getValue()))
 			{
-				if (!parser.writeValue(typed_param.getValue(), name_stack)) 
+				serialized = parser.writeValue(typed_param.getValue(), name_stack);
+				if (!serialized) 
 				{
 					std::string calculated_key = typed_param.calcValueName(typed_param.getValue());
-					if (!diff_param || !ParamCompare<std::string>::equals(static_cast<const self_t*>(diff_param)->getValueName(), calculated_key))
+					if (!diff_typed_param || !ParamCompare<std::string>::equals(diff_typed_param->getValueName(), calculated_key))
 					{
-						parser.writeValue(calculated_key, name_stack);
+						serialized = parser.writeValue(calculated_key, name_stack);
 					}
 				}
 			}
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -995,15 +1049,15 @@ namespace LLInitParam
 	};
 
 	// parameter that is a block
-	template <typename T, typename NAME_VALUE_LOOKUP>
-	class TypedParam<T, NAME_VALUE_LOOKUP, false, true> 
+	template <typename BLOCK_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<BLOCK_T, NAME_VALUE_LOOKUP, false, true> 
 	:	public Param,
-		public ParamValue<T, NAME_VALUE_LOOKUP>
+		public ParamValue<BLOCK_T, NAME_VALUE_LOOKUP>
 	{
 	public:
-		typedef ParamValue<T, NAME_VALUE_LOOKUP>				param_value_t;
+		typedef ParamValue<BLOCK_T, NAME_VALUE_LOOKUP>				param_value_t;
 		typedef typename param_value_t::value_assignment_t		value_assignment_t;
-		typedef TypedParam<T, NAME_VALUE_LOOKUP, false, true>	self_t;
+		typedef TypedParam<BLOCK_T, NAME_VALUE_LOOKUP, false, true>	self_t;
 		typedef NAME_VALUE_LOOKUP								name_value_lookup_t;
 
 		using param_value_t::operator();
@@ -1037,28 +1091,34 @@ namespace LLInitParam
 				if(name_value_lookup_t::valueNamesExist()
 					&& parser.readValue(name)				
 					&& name_value_lookup_t::getValueFromName(name, typed_param.getValue()))
-				{
+			{
 					typed_param.setValueName(name);
-					typed_param.setProvided();
-					return true;
-				}
+				typed_param.setProvided();
+				return true;
 			}
-			
+			}
+
 			if(typed_param.deserializeBlock(parser, name_stack_range, new_name))
 			{	// attempt to parse block...
 				typed_param.clearValueName();
-				typed_param.setProvided();
-				return true;
-			}
+						typed_param.setProvided();
+						return true;
+					}
 
 
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			if (!name_stack.empty())
 			{
@@ -1068,15 +1128,17 @@ namespace LLInitParam
 			std::string key = typed_param.getValueName();
 			if (!key.empty())
 			{
-				if (!parser.writeValue(key, name_stack))
+				if (parser.writeValue(key, name_stack))
 				{
-					return;
+					return true;
 				}
 			}
 			else
 			{
-				typed_param.serializeBlock(parser, name_stack, static_cast<const self_t*>(diff_param));
+				return typed_param.serializeBlock(parser, name_stack, predicate_rule, static_cast<const self_t*>(diff_param));
 			}
+			
+			return false;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -1090,23 +1152,16 @@ namespace LLInitParam
 		// *and* the block as a whole validates
 		bool isProvided() const 
 		{ 
-			// only validate block when it hasn't already passed validation with current data
-			if (Param::anyProvided() && !param_value_t::mValidated)
-			{
-				// a sub-block is "provided" when it has been filled in enough to be valid
-				param_value_t::mValidated = param_value_t::validateBlock(false);
-			}
-			return Param::anyProvided() && param_value_t::mValidated;
+			return Param::anyProvided() && isValid();
 		}
 
+		using param_value_t::isValid;
+
 		// assign block contents to this param-that-is-a-block
 		void set(value_assignment_t val, bool flag_as_provided = true)
 		{
 			setValue(val);
 			param_value_t::clearValueName();
-			// force revalidation of block
-			// next call to isProvided() will update provision status based on validity
-			param_value_t::mValidated = false;
 			setProvided(flag_as_provided);
 		}
 
@@ -1121,9 +1176,6 @@ namespace LLInitParam
 			param_value_t::paramChanged(changed_param, user_provided);
 			if (user_provided)
 			{
-				// a child param has been explicitly changed
-				// so *some* aspect of this block is now provided
-				param_value_t::mValidated = false;
 				setProvided();
 				param_value_t::clearValueName();
 			}
@@ -1161,13 +1213,13 @@ namespace LLInitParam
 	};
 
 	// container of non-block parameters
-	template <typename VALUE_TYPE, typename NAME_VALUE_LOOKUP>
-	class TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, false> 
+	template <typename MULTI_VALUE_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<MULTI_VALUE_T, NAME_VALUE_LOOKUP, true, false> 
 	:	public Param
 	{
 	public:
-		typedef TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, false>		self_t;
-		typedef ParamValue<VALUE_TYPE, NAME_VALUE_LOOKUP>					param_value_t;
+		typedef TypedParam<MULTI_VALUE_T, NAME_VALUE_LOOKUP, true, false>		self_t;
+		typedef ParamValue<MULTI_VALUE_T, NAME_VALUE_LOOKUP>					param_value_t;
 		typedef typename std::vector<param_value_t>							container_t;
 		typedef const container_t&											value_assignment_t;
 
@@ -1175,7 +1227,9 @@ namespace LLInitParam
 		typedef NAME_VALUE_LOOKUP											name_value_lookup_t;
 		
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count) 
-		:	Param(block_descriptor.mCurrentBlockPtr)
+		:	Param(block_descriptor.mCurrentBlockPtr),
+			mMinCount(min_count),
+			mMaxCount(max_count)
 		{
 			std::copy(value.begin(), value.end(), std::back_inserter(mValues));
 
@@ -1193,15 +1247,29 @@ namespace LLInitParam
 			}
 		} 
 
-		bool isProvided() const { return Param::anyProvided(); }
+		bool isProvided() const { return Param::anyProvided() && isValid(); }
+
+		bool isValid() const 
+		{ 
+			size_t num_elements = numValidElements();
+			return mMinCount < num_elements && num_elements < mMaxCount;
+		}
 
 		static bool deserializeParam(Param& param, Parser& parser, const Parser::name_stack_range_t& name_stack_range, bool new_name)
 		{ 
+			Parser::name_stack_range_t new_name_stack_range(name_stack_range);
 			self_t& typed_param = static_cast<self_t&>(param);
 			value_t value;
+
+			// pop first element if empty string
+			if (new_name_stack_range.first != new_name_stack_range.second && new_name_stack_range.first->first.empty())
+			{
+				++new_name_stack_range.first;
+			}
+
 			// no further names in stack, attempt to parse value now
-			if (name_stack_range.first == name_stack_range.second)
-			{	
+			if (new_name_stack_range.first == new_name_stack_range.second)
+			{
 				std::string name;
 				
 				// try to parse a known named value
@@ -1214,25 +1282,34 @@ namespace LLInitParam
 					return true;
 				}
 				else if (parser.readValue(value)) 	// attempt to read value directly
-				{
-					typed_param.add(value);
-					return true;
-				}
+						{
+							typed_param.add(value);
+							return true;
+						}
 			}
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided() || name_stack.empty()) return;
+			
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(REQUIRED, typed_param.mMinCount > 0);
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, typed_param.mValues.empty());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			for (const_iterator it = typed_param.mValues.begin(), end_it = typed_param.mValues.end();
 				it != end_it;
 				++it)
 			{
 				std::string key = it->getValueName();
-				name_stack.back().second = true;
+				name_stack.push_back(std::make_pair(std::string(), true));
 
 				if(key.empty())
 				// not parsed via name values, write out value directly
@@ -1241,7 +1318,11 @@ namespace LLInitParam
 					if (!value_written)
 					{
 						std::string calculated_key = it->calcValueName(it->getValue());
-						if (!parser.writeValue(calculated_key, name_stack))
+						if (parser.writeValue(calculated_key, name_stack))
+						{
+							serialized = true;
+						}
+						else
 						{
 							break;
 						}
@@ -1249,17 +1330,30 @@ namespace LLInitParam
 				}
 				else 
 				{
-					if(!parser.writeValue(key, name_stack))
+					if(parser.writeValue(key, name_stack))
+					{
+						serialized = true;
+					}
+					else
 					{
 						break;
 					}
 				}
+
+				name_stack.pop_back();
 			}
+
+			if (!serialized && predicate_rule.check(ll_make_predicate(EMPTY)))
+			{
+				serialized |= parser.writeValue(Flag(), name_stack);
+			}
+
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
 		{
-			parser.inspectValue<VALUE_TYPE>(name_stack, min_count, max_count, NULL);
+			parser.inspectValue<MULTI_VALUE_T>(name_stack, min_count, max_count, NULL);
 			if (name_value_lookup_t::getPossibleValues())
 			{
 				parser.inspectValue<std::string>(name_stack, min_count, max_count, name_value_lookup_t::getPossibleValues());
@@ -1316,7 +1410,7 @@ namespace LLInitParam
 		bool empty() const { return mValues.empty(); }
 		size_t size() const { return mValues.size(); }
 
-		U32 numValidElements() const
+		size_t numValidElements() const
 		{
 			return mValues.size();
 		}
@@ -1346,23 +1440,27 @@ namespace LLInitParam
 		}
 
 		container_t		mValues;
+		size_t			mMinCount,
+						mMaxCount;
 	};
 
 	// container of block parameters
-	template <typename VALUE_TYPE, typename NAME_VALUE_LOOKUP>
-	class TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, true> 
+	template <typename MULTI_BLOCK_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<MULTI_BLOCK_T, NAME_VALUE_LOOKUP, true, true> 
 	:	public Param
 	{
 	public:
-		typedef TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, true>	self_t;
-		typedef ParamValue<VALUE_TYPE, NAME_VALUE_LOOKUP>				param_value_t;
+		typedef TypedParam<MULTI_BLOCK_T, NAME_VALUE_LOOKUP, true, true>	self_t;
+		typedef ParamValue<MULTI_BLOCK_T, NAME_VALUE_LOOKUP>				param_value_t;
 		typedef typename std::vector<param_value_t>						container_t;
 		typedef const container_t&										value_assignment_t;
 		typedef typename param_value_t::value_t							value_t;
 		typedef NAME_VALUE_LOOKUP										name_value_lookup_t;
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count) 
-		:	Param(block_descriptor.mCurrentBlockPtr)
+		:	Param(block_descriptor.mCurrentBlockPtr),
+			mMinCount(min_count),
+			mMaxCount(max_count)
 		{
 			std::copy(value.begin(), value.end(), back_inserter(mValues));
 
@@ -1380,14 +1478,30 @@ namespace LLInitParam
 			}
 		} 
 
-		bool isProvided() const { return Param::anyProvided(); }
+		bool isProvided() const { return Param::anyProvided() && isValid(); }
+
+		bool isValid() const 
+		{ 
+			size_t num_elements = numValidElements();
+			return mMinCount < num_elements && num_elements < mMaxCount;
+		}
+
 
 		static bool deserializeParam(Param& param, Parser& parser, const Parser::name_stack_range_t& name_stack_range, bool new_name) 
 		{ 
+			Parser::name_stack_range_t new_name_stack_range(name_stack_range);
 			self_t& typed_param = static_cast<self_t&>(param);
 			bool new_value = false;
+			bool new_array_value = false;
 
-			if (new_name || typed_param.mValues.empty())
+			// pop first element if empty string
+			if (new_name_stack_range.first != new_name_stack_range.second && new_name_stack_range.first->first.empty())
+			{
+				new_array_value = new_name_stack_range.first->second;
+				++new_name_stack_range.first;
+			}
+
+			if (new_name || new_array_value || typed_param.mValues.empty())
 			{
 				new_value = true;
 				typed_param.mValues.push_back(value_t());
@@ -1395,26 +1509,34 @@ namespace LLInitParam
 
 			param_value_t& value = typed_param.mValues.back();
 
-			if (name_stack_range.first == name_stack_range.second)
+			if (new_name_stack_range.first == new_name_stack_range.second)
 			{	// try to parse a known named value
 				std::string name;
 
 				if(name_value_lookup_t::valueNamesExist()
 					&& parser.readValue(name)
 					&& name_value_lookup_t::getValueFromName(name, value.getValue()))
-				{
+			{
 					typed_param.mValues.back().setValueName(name);
-					typed_param.setProvided();
-					return true;
+				typed_param.setProvided();
+				if (new_array_value)
+				{
+					name_stack_range.first->second = false;
 				}
+				return true;
+			}
 			}
 
 			// attempt to parse block...
 			if(value.deserializeBlock(parser, name_stack_range, new_name))
-			{
-				typed_param.setProvided();
-				return true;
-			}
+					{
+						typed_param.setProvided();
+						if (new_array_value)
+						{
+							name_stack_range.first->second = false;
+						}
+						return true;
+					}
 
 
 			if (new_value)
@@ -1425,29 +1547,47 @@ namespace LLInitParam
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided() || name_stack.empty()) return;
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(REQUIRED, typed_param.mMinCount > 0);
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, typed_param.mValues.empty());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			for (const_iterator it = typed_param.mValues.begin(), end_it = typed_param.mValues.end();
 				it != end_it;
 				++it)
 			{
-				name_stack.back().second = true;
+				name_stack.push_back(std::make_pair(std::string(), true));
 
 				std::string key = it->getValueName();
 				if (!key.empty())
 				{
-					parser.writeValue(key, name_stack);
+					serialized |= parser.writeValue(key, name_stack);
 				}
 				// Not parsed via named values, write out value directly
-				// NOTE: currently we don't worry about removing default values in Multiple
+				// NOTE: currently we don't do diffing of Multiples
 				else 
 				{
-					it->serializeBlock(parser, name_stack, NULL);
+					serialized = it->serializeBlock(parser, name_stack, predicate_rule, NULL);
+				}
+
+				name_stack.pop_back();
 				}
+
+			if (!serialized && predicate_rule.check(ll_make_predicate(EMPTY)))
+			{
+				serialized |= parser.writeValue(Flag(), name_stack);
 			}
+
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -1503,14 +1643,14 @@ namespace LLInitParam
 		bool empty() const { return mValues.empty(); }
 		size_t size() const { return mValues.size(); }
 
-		U32 numValidElements() const
+		size_t numValidElements() const
 		{
-			U32 count = 0;
+			size_t count = 0;
 			for (const_iterator it = mValues.begin(), end_it = mValues.end();
 				it != end_it;
 				++it)
 			{
-				if(it->validateBlock(false)) count++;
+				if(it->isValid()) count++;
 			}
 			return count;
 		}
@@ -1542,6 +1682,8 @@ namespace LLInitParam
 		}
 
 		container_t			mValues;
+		size_t				mMinCount,
+							mMaxCount;
 	};
 
 	template <typename DERIVED_BLOCK, typename BASE_BLOCK = BaseBlock>
@@ -1829,7 +1971,7 @@ namespace LLInitParam
 
 			static bool validate(const Param* paramp) 
 			{
-				U32 num_valid = ((super_t*)paramp)->numValidElements();
+				size_t num_valid = ((super_t*)paramp)->numValidElements();
 				return RANGE::minCount <= num_valid && num_valid <= RANGE::maxCount;
 			}
 		};
@@ -1946,13 +2088,11 @@ namespace LLInitParam
 		typedef block_t value_t;
 
 		ParamValue()
-		:	block_t(),
-			mValidated(false)
+		:	block_t()
 		{}
 
 		ParamValue(value_assignment_t other)
-		:	block_t(other),
-			mValidated(false)
+		:	block_t(other)
 		{
 		}
 
@@ -1980,9 +2120,6 @@ namespace LLInitParam
 		{
 			return *this;
 		}
-
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
 	};
 
 	template<typename T, bool IS_BLOCK>
@@ -1997,13 +2134,11 @@ namespace LLInitParam
 		typedef T value_t;
 	
 		ParamValue()
-		:	mValue(),
-			mValidated(false)
+		:	mValue()
 		{}
 
 		ParamValue(value_assignment_t other)
-		:	mValue(other),
-			mValidated(false)
+		:	mValue(other)
 		{}
 
 		void setValue(value_assignment_t val)
@@ -2036,11 +2171,11 @@ namespace LLInitParam
 			return mValue.get().deserializeBlock(p, name_stack_range, new_name);
 		}
 
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block = NULL) const
 		{
-			if (mValue.empty()) return;
+			if (mValue.empty()) return false;
 			
-			mValue.get().serializeBlock(p, name_stack, diff_block);
+			return mValue.get().serializeBlock(p, name_stack, predicate_rule, diff_block);
 		}
 
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
@@ -2050,9 +2185,6 @@ namespace LLInitParam
 			return mValue.get().inspectBlock(p, name_stack, min_count, max_count);
 		}
 
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 		BaseBlock::Lazy<T>	mValue;
 	};
@@ -2069,12 +2201,10 @@ namespace LLInitParam
 		typedef const LLSD&	value_assignment_t;
 
 		ParamValue()
-		:	mValidated(false)
 		{}
 
 		ParamValue(value_assignment_t other)
-		:	mValue(other),
-			mValidated(false)
+		:	mValue(other)
 		{}
 
 		void setValue(value_assignment_t val) { mValue = val; }
@@ -2088,16 +2218,13 @@ namespace LLInitParam
 
 		// block param interface
 		LL_COMMON_API bool deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack_range, bool new_name);
-		LL_COMMON_API void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const;
+		LL_COMMON_API bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block = NULL) const;
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
 		{
 			//TODO: implement LLSD params as schema type Any
 			return true;
 		}
 
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 		static void serializeElement(Parser& p, const LLSD& sd, Parser::name_stack_t& name_stack);
 
@@ -2126,8 +2253,7 @@ namespace LLInitParam
 
 		CustomParamValue(const T& value = T())
 		:	mValue(value),
-			mValueAge(VALUE_AUTHORITATIVE),
-			mValidated(false)
+			mValueAge(VALUE_AUTHORITATIVE)
 		{}
 
 		bool deserializeBlock(Parser& parser, Parser::name_stack_range_t name_stack_range, bool new_name)
@@ -2151,7 +2277,7 @@ namespace LLInitParam
 			return typed_param.BaseBlock::deserializeBlock(parser, name_stack_range, new_name);
 		}
 
-		void serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const
+		bool serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block = NULL) const
 		{
 			const derived_t& typed_param = static_cast<const derived_t&>(*this);
 			const derived_t* diff_param = static_cast<const derived_t*>(diff_block);
@@ -2163,14 +2289,18 @@ namespace LLInitParam
 			{
 				if (!diff_param || !ParamCompare<std::string>::equals(diff_param->getValueName(), key))
 				{
-					parser.writeValue(key, name_stack);
+					return parser.writeValue(key, name_stack);
 				}
 			}
 			// then try to serialize value directly
 			else if (!diff_param || !ParamCompare<T>::equals(typed_param.getValue(), diff_param->getValue()))
             {
 				
-				if (!parser.writeValue(typed_param.getValue(), name_stack)) 
+				if (parser.writeValue(typed_param.getValue(), name_stack)) 
+				{
+					return true;
+				}
+				else
 				{
 					//RN: *always* serialize provided components of BlockValue (don't pass diff_param on),
 					// since these tend to be viewed as the constructor arguments for the value T.  It seems
@@ -2187,14 +2317,15 @@ namespace LLInitParam
 						// and serialize those params
 						derived_t copy(typed_param);
 						copy.updateBlockFromValue(true);
-						copy.block_t::serializeBlock(parser, name_stack, NULL);
+						return copy.block_t::serializeBlock(parser, name_stack, predicate_rule, NULL);
 					}
 					else
 					{
-						block_t::serializeBlock(parser, name_stack, NULL);
+						return block_t::serializeBlock(parser, name_stack, predicate_rule, NULL);
 					}
 				}
 			}
+			return false;
 		}
 
 		bool inspectBlock(Parser& parser, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
@@ -2312,8 +2443,6 @@ namespace LLInitParam
 			return block_t::mergeBlock(block_data, source, overwrite);
 		}
 
-		mutable bool 		mValidated; // lazy validation flag
-
 	private:
 		mutable T			mValue;
 		mutable EValueAge	mValueAge;
diff --git a/indra/llcommon/llinstancetracker.cpp b/indra/llcommon/llinstancetracker.cpp
index 5dc3ea5d7b..071a637cda 100644
--- a/indra/llcommon/llinstancetracker.cpp
+++ b/indra/llcommon/llinstancetracker.cpp
@@ -27,6 +27,8 @@
 #include "linden_common.h"
 // associated header
 #include "llinstancetracker.h"
+#include "llapr.h"
+
 // STL headers
 // std headers
 // external library headers
@@ -47,3 +49,19 @@ void * & LLInstanceTrackerBase::getInstances(std::type_info const & info)
 													 InstancesMap::mapped_type()))
 		.first->second;
 }
+
+void LLInstanceTrackerBase::StaticBase::incrementDepth()
+{
+	apr_atomic_inc32(&sIterationNestDepth);
+}
+
+void LLInstanceTrackerBase::StaticBase::decrementDepth()
+{
+	apr_atomic_dec32(&sIterationNestDepth);
+}
+
+U32 LLInstanceTrackerBase::StaticBase::getDepth()
+{
+	apr_uint32_t data = apr_atomic_read32(&sIterationNestDepth);
+	return data;
+}
diff --git a/indra/llcommon/llinstancetracker.h b/indra/llcommon/llinstancetracker.h
index 403df08990..9dd6d4a7ed 100644
--- a/indra/llcommon/llinstancetracker.h
+++ b/indra/llcommon/llinstancetracker.h
@@ -70,15 +70,20 @@ protected:
         StaticBase():
             sIterationNestDepth(0)
         {}
-        S32 sIterationNestDepth;
+
+		void incrementDepth();
+		void decrementDepth();
+		U32 getDepth();
+	private:
+		U32 sIterationNestDepth;
     };
 };
 
 /// This mix-in class adds support for tracking all instances of the specified class parameter T
 /// The (optional) key associates a value of type KEY with a given instance of T, for quick lookup
 /// If KEY is not provided, then instances are stored in a simple set
-/// @NOTE: see explicit specialization below for default KEY==T* case
-template<typename T, typename KEY = T*>
+/// @NOTE: see explicit specialization below for default KEY==void case
+template<typename T, typename KEY = void>
 class LLInstanceTracker : public LLInstanceTrackerBase
 {
 	typedef LLInstanceTracker<T, KEY> MyT;
@@ -99,12 +104,12 @@ public:
 		instance_iter(const typename InstanceMap::iterator& it)
 		:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~instance_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 
@@ -133,18 +138,18 @@ public:
 		key_iter(typename InstanceMap::iterator it)
 			:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		key_iter(const key_iter& other)
 			:	mIterator(other.mIterator)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~key_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 
@@ -203,7 +208,7 @@ protected:
 	virtual ~LLInstanceTracker() 
 	{ 
 		// it's unsafe to delete instances of this type while all instances are being iterated over.
-		llassert_always(getStatic().sIterationNestDepth == 0);
+		llassert_always(getStatic().getDepth() == 0);
 		remove_();		
 	}
 	virtual void setKey(KEY key) { remove_(); add_(key); }
@@ -224,12 +229,12 @@ private:
 	KEY mInstanceKey;
 };
 
-/// explicit specialization for default case where KEY is T*
+/// explicit specialization for default case where KEY is void
 /// use a simple std::set<T*>
 template<typename T>
-class LLInstanceTracker<T, T*> : public LLInstanceTrackerBase
+class LLInstanceTracker<T, void> : public LLInstanceTrackerBase
 {
-	typedef LLInstanceTracker<T, T*> MyT;
+	typedef LLInstanceTracker<T, void> MyT;
 	typedef typename std::set<T*> InstanceSet;
 	struct StaticData: public StaticBase
 	{
@@ -262,18 +267,18 @@ public:
 		instance_iter(const typename InstanceSet::iterator& it)
 		:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		instance_iter(const instance_iter& other)
 		:	mIterator(other.mIterator)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~instance_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 	private:
@@ -306,7 +311,7 @@ protected:
 	virtual ~LLInstanceTracker()
 	{
 		// it's unsafe to delete instances of this type while all instances are being iterated over.
-		llassert_always(getStatic().sIterationNestDepth == 0);
+		llassert_always(getStatic().getDepth() == 0);
 		getSet_().erase(static_cast<T*>(this));
 	}
 
diff --git a/indra/llcommon/llleap.cpp b/indra/llcommon/llleap.cpp
index 0a57ef1c48..84d2a12f65 100644
--- a/indra/llcommon/llleap.cpp
+++ b/indra/llcommon/llleap.cpp
@@ -394,7 +394,7 @@ public:
         LLProcess::WritePipe& childin(mChild->getWritePipe(LLProcess::STDIN));
         LLEventPump& mainloop(LLEventPumps::instance().obtain("mainloop"));
         LLSD nop;
-        F64 until(LLTimer::getElapsedSeconds() + 2);
+        F64 until = (LLTimer::getElapsedSeconds() + 2).value();
         while (childin.size() && LLTimer::getElapsedSeconds() < until)
         {
             mainloop.post(nop);
diff --git a/indra/llcommon/llmd5.cpp b/indra/llcommon/llmd5.cpp
index 1409c55d1c..ed80af36d8 100644
--- a/indra/llcommon/llmd5.cpp
+++ b/indra/llcommon/llmd5.cpp
@@ -76,7 +76,6 @@ documentation and/or software.
 
 #include "llmd5.h"
 
-#include <cassert>
 #include <iostream>		// cerr
 
 // how many bytes to grab at a time when checking files
diff --git a/indra/llcommon/llmemory.cpp b/indra/llcommon/llmemory.cpp
index 70ad10ad55..c6b02df939 100644
--- a/indra/llcommon/llmemory.cpp
+++ b/indra/llcommon/llmemory.cpp
@@ -32,7 +32,6 @@
 //#endif
 
 #if defined(LL_WINDOWS)
-//# include <windows.h>
 # include <psapi.h>
 #elif defined(LL_DARWIN)
 # include <sys/types.h>
diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h
index e725bdd9fa..95500753e4 100644
--- a/indra/llcommon/llmemory.h
+++ b/indra/llcommon/llmemory.h
@@ -27,6 +27,9 @@
 #define LLMEMORY_H
 
 #include "linden_common.h"
+#if !LL_WINDOWS
+#include <stdint.h>
+#endif
 
 class LLMutex ;
 
@@ -36,6 +39,20 @@ class LLMutex ;
 #define LL_CHECK_MEMORY
 #endif
 
+#if LL_WINDOWS
+#define LL_ALIGN_OF __alignof
+#else
+#define LL_ALIGN_OF __align_of__
+#endif
+
+#if LL_WINDOWS
+#define LL_DEFAULT_HEAP_ALIGN 8
+#elif LL_DARWIN
+#define LL_DEFAULT_HEAP_ALIGN 16
+#elif LL_LINUX
+#define LL_DEFAULT_HEAP_ALIGN 8
+#endif
+
 inline void* ll_aligned_malloc( size_t size, int align )
 {
 	void* mem = malloc( size + (align - 1) + sizeof(void*) );
diff --git a/indra/llcommon/llmetricperformancetester.cpp b/indra/llcommon/llmetricperformancetester.cpp
index 41d3eb0bf3..aaacbfb599 100644
--- a/indra/llcommon/llmetricperformancetester.cpp
+++ b/indra/llcommon/llmetricperformancetester.cpp
@@ -29,9 +29,9 @@
 #include "indra_constants.h"
 #include "llerror.h"
 #include "llsdserialize.h"
-#include "llstat.h"
 #include "lltreeiterators.h"
 #include "llmetricperformancetester.h"
+#include "llfasttimer.h"
 
 //----------------------------------------------------------------------------------------------
 // LLMetricPerformanceTesterBasic : static methods and testers management
@@ -91,7 +91,7 @@ LLMetricPerformanceTesterBasic* LLMetricPerformanceTesterBasic::getTester(std::s
 // Return TRUE if this metric is requested or if the general default "catch all" metric is requested
 BOOL LLMetricPerformanceTesterBasic::isMetricLogRequested(std::string name)
 {
-	return (LLFastTimer::sMetricLog && ((LLFastTimer::sLogName == name) || (LLFastTimer::sLogName == DEFAULT_METRIC_NAME)));
+	return (LLTrace::TimeBlock::sMetricLog && ((LLTrace::TimeBlock::sLogName == name) || (LLTrace::TimeBlock::sLogName == DEFAULT_METRIC_NAME)));
 }
 
 /*static*/ 
@@ -194,8 +194,7 @@ void LLMetricPerformanceTesterBasic::preOutputTestResults(LLSD* sd)
 
 void LLMetricPerformanceTesterBasic::postOutputTestResults(LLSD* sd)
 {
-	LLMutexLock lock(LLFastTimer::sLogLock);
-	LLFastTimer::sLogQueue.push((*sd));
+	LLTrace::TimeBlock::pushLog(*sd);
 }
 
 void LLMetricPerformanceTesterBasic::outputTestResults() 
diff --git a/indra/llcommon/llmortician.h b/indra/llcommon/llmortician.h
index 319955ef93..9517e2db5e 100644
--- a/indra/llcommon/llmortician.h
+++ b/indra/llcommon/llmortician.h
@@ -28,6 +28,7 @@
 #define LLMORTICIAN_H
 
 #include "stdtypes.h"
+#include <list>
 
 class LL_COMMON_API LLMortician 
 {
diff --git a/indra/llcommon/llmutex.cpp b/indra/llcommon/llmutex.cpp
new file mode 100644
index 0000000000..ad0287c6d5
--- /dev/null
+++ b/indra/llcommon/llmutex.cpp
@@ -0,0 +1,179 @@
+/** 
+ * @file llmutex.cpp
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llapr.h"
+
+#include "apr_portable.h"
+
+#include "llmutex.h"
+#include "llthread.h"
+
+//============================================================================
+
+LLMutex::LLMutex(apr_pool_t *poolp) :
+	mAPRMutexp(NULL), mCount(0), mLockingThread(NO_THREAD)
+{
+	//if (poolp)
+	//{
+	//	mIsLocalPool = FALSE;
+	//	mAPRPoolp = poolp;
+	//}
+	//else
+	{
+		mIsLocalPool = TRUE;
+		apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread
+	}
+	apr_thread_mutex_create(&mAPRMutexp, APR_THREAD_MUTEX_UNNESTED, mAPRPoolp);
+}
+
+
+LLMutex::~LLMutex()
+{
+#if MUTEX_DEBUG
+	//bad assertion, the subclass LLSignal might be "locked", and that's OK
+	//llassert_always(!isLocked()); // better not be locked!
+#endif
+	if (ll_apr_is_initialized())
+	{
+		apr_thread_mutex_destroy(mAPRMutexp);
+		if (mIsLocalPool)
+		{
+			apr_pool_destroy(mAPRPoolp);
+		}
+	}
+	mAPRMutexp = NULL;
+}
+
+
+void LLMutex::lock()
+{
+	if(isSelfLocked())
+	{ //redundant lock
+		mCount++;
+		return;
+	}
+	
+	apr_thread_mutex_lock(mAPRMutexp);
+	
+#if MUTEX_DEBUG
+	// Have to have the lock before we can access the debug info
+	U32 id = LLThread::currentID();
+	if (mIsLocked[id] != FALSE)
+		llerrs << "Already locked in Thread: " << id << llendl;
+	mIsLocked[id] = TRUE;
+#endif
+
+	mLockingThread = LLThread::currentID();
+}
+
+void LLMutex::unlock()
+{
+	if (mCount > 0)
+	{ //not the root unlock
+		mCount--;
+		return;
+	}
+	
+#if MUTEX_DEBUG
+	// Access the debug info while we have the lock
+	U32 id = LLThread::currentID();
+	if (mIsLocked[id] != TRUE)
+		llerrs << "Not locked in Thread: " << id << llendl;	
+	mIsLocked[id] = FALSE;
+#endif
+
+	mLockingThread = NO_THREAD;
+	apr_thread_mutex_unlock(mAPRMutexp);
+}
+
+bool LLMutex::isLocked()
+{
+	apr_status_t status = apr_thread_mutex_trylock(mAPRMutexp);
+	if (APR_STATUS_IS_EBUSY(status))
+	{
+		return true;
+	}
+	else
+	{
+		apr_thread_mutex_unlock(mAPRMutexp);
+		return false;
+	}
+}
+
+bool LLMutex::isSelfLocked()
+{
+	return mLockingThread == LLThread::currentID();
+}
+
+U32 LLMutex::lockingThread() const
+{
+	return mLockingThread;
+}
+
+//============================================================================
+
+LLCondition::LLCondition(apr_pool_t *poolp) :
+	LLMutex(poolp)
+{
+	// base class (LLMutex) has already ensured that mAPRPoolp is set up.
+
+	apr_thread_cond_create(&mAPRCondp, mAPRPoolp);
+}
+
+
+LLCondition::~LLCondition()
+{
+	apr_thread_cond_destroy(mAPRCondp);
+	mAPRCondp = NULL;
+}
+
+
+void LLCondition::wait()
+{
+	if (!isLocked())
+	{ //mAPRMutexp MUST be locked before calling apr_thread_cond_wait
+		apr_thread_mutex_lock(mAPRMutexp);
+#if MUTEX_DEBUG
+		// avoid asserts on destruction in non-release builds
+		U32 id = LLThread::currentID();
+		mIsLocked[id] = TRUE;
+#endif
+	}
+	apr_thread_cond_wait(mAPRCondp, mAPRMutexp);
+}
+
+void LLCondition::signal()
+{
+	apr_thread_cond_signal(mAPRCondp);
+}
+
+void LLCondition::broadcast()
+{
+	apr_thread_cond_broadcast(mAPRCondp);
+}
+
+
+//============================================================================
diff --git a/indra/llcommon/llmutex.h b/indra/llcommon/llmutex.h
new file mode 100644
index 0000000000..cbde4c47a9
--- /dev/null
+++ b/indra/llcommon/llmutex.h
@@ -0,0 +1,101 @@
+/** 
+ * @file llmutex.h
+ * @brief Base classes for mutex and condition handling.
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLMUTEX_H
+#define LL_LLMUTEX_H
+
+#include "llapr.h"
+#include "apr_thread_cond.h"
+
+//============================================================================
+
+#define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO)
+
+class LL_COMMON_API LLMutex
+{
+public:
+	typedef enum
+	{
+		NO_THREAD = 0xFFFFFFFF
+	} e_locking_thread;
+
+	LLMutex(apr_pool_t *apr_poolp = NULL); // NULL pool constructs a new pool for the mutex
+	virtual ~LLMutex();
+	
+	void lock();		// blocks
+	void unlock();
+	bool isLocked(); 	// non-blocking, but does do a lock/unlock so not free
+	bool isSelfLocked(); //return true if locked in a same thread
+	U32 lockingThread() const; //get ID of locking thread
+	
+protected:
+	apr_thread_mutex_t *mAPRMutexp;
+	mutable U32			mCount;
+	mutable U32			mLockingThread;
+	
+	apr_pool_t			*mAPRPoolp;
+	BOOL				mIsLocalPool;
+	
+#if MUTEX_DEBUG
+	std::map<U32, BOOL> mIsLocked;
+#endif
+};
+
+// Actually a condition/mutex pair (since each condition needs to be associated with a mutex).
+class LL_COMMON_API LLCondition : public LLMutex
+{
+public:
+	LLCondition(apr_pool_t *apr_poolp); // Defaults to global pool, could use the thread pool as well.
+	~LLCondition();
+	
+	void wait();		// blocks
+	void signal();
+	void broadcast();
+	
+protected:
+	apr_thread_cond_t *mAPRCondp;
+};
+
+class LLMutexLock
+{
+public:
+	LLMutexLock(LLMutex* mutex)
+	{
+		mMutex = mutex;
+		
+		if(mMutex)
+			mMutex->lock();
+	}
+	~LLMutexLock()
+	{
+		if(mMutex)
+			mMutex->unlock();
+	}
+private:
+	LLMutex* mMutex;
+};
+
+#endif // LL_LLTHREAD_H
diff --git a/indra/llcommon/llpointer.h b/indra/llcommon/llpointer.h
index 88c09c8dca..f03551045e 100644
--- a/indra/llcommon/llpointer.h
+++ b/indra/llcommon/llpointer.h
@@ -97,24 +97,13 @@ public:
 
 	LLPointer<Type>& operator =(Type* ptr)                   
 	{ 
-		if( mPointer != ptr )
-		{
-			unref(); 
-			mPointer = ptr; 
-			ref();
-		}
-
+		assign(ptr);
 		return *this; 
 	}
 
 	LLPointer<Type>& operator =(const LLPointer<Type>& ptr)  
 	{ 
-		if( mPointer != ptr.mPointer )
-		{
-			unref(); 
-			mPointer = ptr.mPointer;
-			ref();
-		}
+		assign(ptr);
 		return *this; 
 	}
 
@@ -122,12 +111,7 @@ public:
 	template<typename Subclass>
 	LLPointer<Type>& operator =(const LLPointer<Subclass>& ptr)  
 	{ 
-		if( mPointer != ptr.get() )
-		{
-			unref(); 
-			mPointer = ptr.get();
-			ref();
-		}
+		assign(ptr.get());
 		return *this; 
 	}
 	
@@ -144,6 +128,16 @@ protected:
 	void ref();                             
 	void unref();
 #else
+
+	void assign(const LLPointer<Type>& ptr)
+	{
+		if( mPointer != ptr.mPointer )
+		{
+			unref(); 
+			mPointer = ptr.mPointer;
+			ref();
+		}
+	}
 	void ref()                             
 	{ 
 		if (mPointer)
@@ -156,9 +150,9 @@ protected:
 	{
 		if (mPointer)
 		{
-			Type *tempp = mPointer;
+			Type *temp = mPointer;
 			mPointer = NULL;
-			tempp->unref();
+			temp->unref();
 			if (mPointer != NULL)
 			{
 				llwarns << "Unreference did assignment to non-NULL because of destructor" << llendl;
@@ -171,4 +165,53 @@ protected:
 	Type*	mPointer;
 };
 
+template<typename Type>
+class LLCopyOnWritePointer
+{
+public:
+	typedef LLCopyOnWritePointer<Type> self_t;
+
+	LLCopyOnWritePointer() 
+	{}
+
+	LLCopyOnWritePointer(Type* ptr) 
+	:	mPointer(ptr)
+	{}
+
+	LLCopyOnWritePointer(LLPointer<Type>& ptr)
+	:	mPointer(ptr)
+	{}
+
+	Type* write()
+	{
+		makeUnique();
+		return mPointer.get();
+	}
+
+	void makeUnique()
+	{
+		if (mPointer.notNull() && mPointer.get()->getNumRefs() > 1)
+		{
+			mPointer = new Type(*mPointer.get());
+		}
+	}
+
+	operator BOOL()  const						{ return (BOOL)mPointer; }
+	operator bool()  const						{ return (bool)mPointer; }
+	bool operator!() const						{ return !mPointer; }
+	bool isNull() const							{ return mPointer.isNull(); }
+	bool notNull() const						{ return mPointer.notNull(); }
+
+	bool operator !=(Type* ptr) const           { return (mPointer.get() != ptr); 	}
+	bool operator ==(Type* ptr) const           { return (mPointer.get() == ptr); 	}
+	bool operator ==(const LLCopyOnWritePointer<Type>& ptr) const     { return (mPointer == ptr.mPointer); 	}
+	bool operator < (const LLCopyOnWritePointer<Type>& ptr) const     { return (mPointer < ptr.mPointer); 	}
+	bool operator > (const LLCopyOnWritePointer<Type>& ptr) const     { return (mPointer > ptr.mPointer); 	}
+
+	operator const Type*()   const				{ return mPointer.get(); }
+	const Type*	operator->() const				{ return mPointer.get(); }
+protected:
+	 LLPointer<Type> mPointer;
+};
+
 #endif
diff --git a/indra/llcommon/llpredicate.cpp b/indra/llcommon/llpredicate.cpp
new file mode 100644
index 0000000000..1278948e24
--- /dev/null
+++ b/indra/llcommon/llpredicate.cpp
@@ -0,0 +1,41 @@
+/** 
+ * @file llpredicate.cpp
+ * @brief abstraction for filtering objects by predicates, with arbitrary boolean expressions
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+#include "linden_common.h"
+
+#include "llpredicate.h"
+
+namespace LLPredicate
+{
+	const U32 cPredicateFlagsFromEnum[5] = 
+	{
+		0xAAAAaaaa, // 10101010101010101010101010101010
+		0xCCCCcccc, // 11001100110011001100110011001100
+		0xF0F0F0F0, // 11110000111100001111000011110000
+		0xFF00FF00, // 11111111000000001111111100000000
+		0xFFFF0000  // 11111111111111110000000000000000 
+	};
+}
+
diff --git a/indra/llcommon/llpredicate.h b/indra/llcommon/llpredicate.h
new file mode 100644
index 0000000000..a0e970a799
--- /dev/null
+++ b/indra/llcommon/llpredicate.h
@@ -0,0 +1,210 @@
+/** 
+ * @file llpredicate.h
+ * @brief abstraction for filtering objects by predicates, with arbitrary boolean expressions
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLPREDICATE_H
+#define LL_LLPREDICATE_H
+
+#include "llerror.h"
+
+namespace LLPredicate
+{
+	template<typename ENUM> class Rule;
+
+	extern const U32 cPredicateFlagsFromEnum[5];
+
+	template<typename ENUM>
+	class Value
+	{
+	public:
+		typedef U32 predicate_flag_t;
+		static const S32 cMaxEnum = 5;
+
+		Value(ENUM e, bool predicate_value = true)
+		:	mPredicateFlags(predicate_value ? cPredicateFlagsFromEnum[e] : ~cPredicateFlagsFromEnum[e])
+		{
+			llassert(0 <= e && e < cMaxEnum);
+		}
+
+		Value()
+		:	mPredicateFlags(0xFFFFffff)
+		{}
+
+		Value operator!() const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = ~mPredicateFlags;
+			return new_value;
+		}
+
+		Value operator &&(const Value other) const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = mPredicateFlags & other.mPredicateFlags;
+			return new_value;
+		}
+
+		Value operator ||(const Value other) const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = mPredicateFlags | other.mPredicateFlags;
+			return new_value;
+		}
+
+		void set(ENUM e, bool value = true)
+		{
+			llassert(0 <= e && e < cMaxEnum);
+			predicate_flag_t flags_to_modify;
+			predicate_flag_t mask = cPredicateFlagsFromEnum[e];
+			if (value)
+			{	// add predicate "e" to flags that don't contain it already
+				flags_to_modify = (mPredicateFlags & ~mask);
+				// clear flags not containing e
+				mPredicateFlags &= mask;
+				// add back flags shifted to contain e
+				mPredicateFlags |= flags_to_modify << (0x1 << e);
+			}
+			else
+			{	// remove predicate "e" from flags that contain it
+				flags_to_modify = (mPredicateFlags & mask);
+				// clear flags containing e
+				mPredicateFlags &= ~mask;
+				// add back flags shifted to not contain e
+				mPredicateFlags |= flags_to_modify >> (0x1 << e);
+			}
+		}
+
+		void forget(ENUM e)
+		{
+			set(e, true);
+			U32 flags_with_predicate = mPredicateFlags;
+			set(e, false);
+			// ambiguous value is result of adding and removing predicate at the same time!
+			mPredicateFlags |= flags_with_predicate;
+		}
+
+		bool allSet() const
+		{
+			return mPredicateFlags == ~0;
+		}
+
+		bool noneSet() const
+		{
+			return mPredicateFlags == 0;
+		}
+
+		bool someSet() const
+		{
+			return mPredicateFlags != 0;
+		}
+
+	private:
+		predicate_flag_t mPredicateFlags;
+	};
+
+	template<typename ENUM>
+	class Rule
+	{
+	public:
+		Rule(ENUM value)
+		:	mRule(value)
+		{}
+
+		Rule(const Value<ENUM> other)
+		:	mRule(other)
+		{}
+
+		Rule()
+		{}
+
+		void require(ENUM e)
+		{
+			mRule.set(e, require);
+		}
+
+		void allow(ENUM e)
+		{
+			mRule.forget(e);
+		}
+
+		bool check(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet();
+		}
+
+		bool requires(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet() && (!mRule && value).noneSet();
+		}
+
+		bool isAmbivalent(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet() && (!mRule && value).someSet();
+		}
+
+		bool acceptsAll() const
+		{
+			return mRule.allSet();
+		}
+
+		bool acceptsNone() const
+		{
+			return mRule.noneSet();
+		}
+
+		Rule operator!() const
+		{
+			Rule new_rule;
+			new_rule.mRule = !mRule;
+			return new_rule;
+		}
+
+		Rule operator &&(const Rule other) const
+		{
+			Rule new_rule;
+			new_rule.mRule = mRule && other.mRule;
+			return new_rule;
+		}
+
+		Rule operator ||(const Rule other) const
+		{
+			Rule new_rule;
+			new_rule.mRule = mRule || other.mRule;
+			return new_rule;
+		}
+
+	private:
+		Value<ENUM> mRule;
+	};
+}
+
+template<typename ENUM>
+LLPredicate::Value<ENUM> ll_make_predicate(ENUM e, bool predicate_value = true)
+{
+	 return LLPredicate::Value<ENUM>(e, predicate_value);
+}
+
+
+#endif // LL_LLPREDICATE_H
diff --git a/indra/llcommon/llprocess.h b/indra/llcommon/llprocess.h
index d711ce2f74..2fe084afcd 100644
--- a/indra/llcommon/llprocess.h
+++ b/indra/llcommon/llprocess.h
@@ -38,8 +38,7 @@
 #include <stdexcept>
 
 #if LL_WINDOWS
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>                // HANDLE (eye roll)
+#include "llwin32headerslean.h"	// for HANDLE
 #elif LL_LINUX
 #if defined(Status)
 #undef Status
diff --git a/indra/llcommon/llprocessor.cpp b/indra/llcommon/llprocessor.cpp
index fd8f603d21..5ddfa6fcef 100644
--- a/indra/llcommon/llprocessor.cpp
+++ b/indra/llcommon/llprocessor.cpp
@@ -32,9 +32,7 @@
 //#include <memory>
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #	define _interlockedbittestandset _renamed_interlockedbittestandset
 #	define _interlockedbittestandreset _renamed_interlockedbittestandreset
 #	include <intrin.h>
@@ -877,7 +875,7 @@ LLProcessorInfo::LLProcessorInfo() : mImpl(NULL)
 
 
 LLProcessorInfo::~LLProcessorInfo() {}
-F64 LLProcessorInfo::getCPUFrequency() const { return mImpl->getCPUFrequency(); }
+LLUnitImplicit<LLUnits::Megahertz, F64> LLProcessorInfo::getCPUFrequency() const { return mImpl->getCPUFrequency(); }
 bool LLProcessorInfo::hasSSE() const { return mImpl->hasSSE(); }
 bool LLProcessorInfo::hasSSE2() const { return mImpl->hasSSE2(); }
 bool LLProcessorInfo::hasAltivec() const { return mImpl->hasAltivec(); }
diff --git a/indra/llcommon/llprocessor.h b/indra/llcommon/llprocessor.h
index 6364d3c8bb..fbd427f484 100644
--- a/indra/llcommon/llprocessor.h
+++ b/indra/llcommon/llprocessor.h
@@ -27,6 +27,8 @@
 
 #ifndef LLPROCESSOR_H
 #define LLPROCESSOR_H
+#include "llunit.h"
+
 class LLProcessorInfoImpl;
 
 class LL_COMMON_API LLProcessorInfo
@@ -35,7 +37,7 @@ public:
 	LLProcessorInfo(); 
  	~LLProcessorInfo();
 
-	F64 getCPUFrequency() const;
+	LLUnitImplicit<LLUnits::Megahertz, F64> getCPUFrequency() const;
 	bool hasSSE() const;
 	bool hasSSE2() const;
 	bool hasAltivec() const;
diff --git a/indra/llcommon/llqueuedthread.cpp b/indra/llcommon/llqueuedthread.cpp
index abf47a0f57..956642e97a 100644
--- a/indra/llcommon/llqueuedthread.cpp
+++ b/indra/llcommon/llqueuedthread.cpp
@@ -28,6 +28,7 @@
 
 #include "llstl.h"
 #include "lltimer.h"	// ms_sleep()
+#include "lltracethreadrecorder.h"
 
 //============================================================================
 
@@ -134,8 +135,8 @@ S32 LLQueuedThread::updateQueue(F32 max_time_ms)
 		pending = getPending();
 		if(pending > 0)
 		{
-			unpause();
-		}
+		unpause();
+	}
 	}
 	else
 	{
@@ -508,6 +509,9 @@ void LLQueuedThread::run()
 		threadedUpdate();
 		
 		int res = processNextRequest();
+
+		LLTrace::get_thread_recorder()->pushToMaster();
+
 		if (res == 0)
 		{
 			mIdleThread = TRUE;
diff --git a/indra/llcommon/llsdparam.cpp b/indra/llcommon/llsdparam.cpp
index 0e29873bb0..345e30f4b4 100644
--- a/indra/llcommon/llsdparam.cpp
+++ b/indra/llcommon/llsdparam.cpp
@@ -102,13 +102,13 @@ void LLParamSDParser::readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool
 	//readSDValues(sd, block);
 }
 
-void LLParamSDParser::writeSD(LLSD& sd, const LLInitParam::BaseBlock& block)
+void LLParamSDParser::writeSDImpl(LLSD& sd, const LLInitParam::BaseBlock& block, const LLInitParam::predicate_rule_t rules, const LLInitParam::BaseBlock* diff_block)
 {
 	mNameStack.clear();
 	mWriteRootSD = &sd;
 
 	name_stack_t name_stack;
-	block.serializeBlock(*this, name_stack);
+	block.serializeBlock(*this, name_stack, rules, diff_block);
 }
 
 /*virtual*/ std::string LLParamSDParser::getCurrentElementName()
@@ -223,10 +223,14 @@ LLSD& LLParamSDParserUtilities::getSDWriteNode(LLSD& input, LLInitParam::Parser:
 	{
 		bool new_traversal = it->second;
 
-		LLSD* child_sd = it->first.empty() ? sd_to_write : &(*sd_to_write)[it->first];
-
-		if (child_sd->isArray())
+		LLSD* child_sd;
+		if (it->first.empty())
+		{
+			child_sd = sd_to_write;
+			if (child_sd->isUndefined())
 		{
+				*child_sd = LLSD::emptyArray();
+			}
 			if (new_traversal)
 			{
 				// write to new element at end
@@ -240,22 +244,7 @@ LLSD& LLParamSDParserUtilities::getSDWriteNode(LLSD& input, LLInitParam::Parser:
 		}
 		else
 		{
-			if (new_traversal 
-				&& child_sd->isDefined() 
-				&& !child_sd->isArray())
-			{
-				// copy child contents into first element of an array
-				LLSD new_array = LLSD::emptyArray();
-				new_array.append(*child_sd);
-				// assign array to slot that previously held the single value
-				*child_sd = new_array;
-				// return next element in that array
-				sd_to_write = &((*child_sd)[1]);
-			}
-			else
-			{
-				sd_to_write = child_sd;
-			}
+			sd_to_write = &(*sd_to_write)[it->first];
 		}
 		it->second = false;
 	}
@@ -283,8 +272,9 @@ void LLParamSDParserUtilities::readSDValues(read_sd_cb_t cb, const LLSD& sd, LLI
 			it != sd.endArray();
 			++it)
 		{
-			stack.back().second = true;
+			stack.push_back(make_pair(std::string(), true));
 			readSDValues(cb, *it, stack);
+			stack.pop_back();
 		}
 	}
 	else if (sd.isUndefined())
@@ -315,6 +305,12 @@ namespace LLInitParam
 	// block param interface
 	bool ParamValue<LLSD, TypeValues<LLSD>, false>::deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack, bool new_name)
 	{
+		if (name_stack.first == name_stack.second
+			&& p.readValue<LLSD>(mValue))
+		{
+			return true;
+		}
+
 		LLSD& sd = LLParamSDParserUtilities::getSDWriteNode(mValue, name_stack);
 
 		LLSD::String string;
@@ -333,10 +329,14 @@ namespace LLInitParam
 		p.writeValue<LLSD::String>(sd.asString(), name_stack);
 	}
 
-	void ParamValue<LLSD, TypeValues<LLSD>, false>::serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block) const
+	bool ParamValue<LLSD, TypeValues<LLSD>, false>::serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block) const
 	{
-		// read from LLSD value and serialize out to parser (which could be LLSD, XUI, etc)
-		Parser::name_stack_t stack;
-		LLParamSDParserUtilities::readSDValues(boost::bind(&serializeElement, boost::ref(p), _1, _2), mValue, stack);
+		// attempt to write LLSD out directly
+		if (!p.writeValue<LLSD>(mValue, name_stack))
+		{
+			// otherwise read from LLSD value and serialize out to parser (which could be LLSD, XUI, etc)
+			LLParamSDParserUtilities::readSDValues(boost::bind(&serializeElement, boost::ref(p), _1, _2), mValue, name_stack);
+		}
+		return true;
 	}
 }
diff --git a/indra/llcommon/llsdparam.h b/indra/llcommon/llsdparam.h
index 6ef5debd7b..7cfc265c62 100644
--- a/indra/llcommon/llsdparam.h
+++ b/indra/llcommon/llsdparam.h
@@ -30,6 +30,7 @@
 
 #include "llinitparam.h"
 #include "boost/function.hpp"
+#include "llfasttimer.h"
 
 struct LL_COMMON_API LLParamSDParserUtilities
 {
@@ -50,11 +51,28 @@ typedef LLInitParam::Parser parser_t;
 public:
 	LLParamSDParser();
 	void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
-	void writeSD(LLSD& sd, const LLInitParam::BaseBlock& block);
+	template<typename BLOCK>
+	void writeSD(LLSD& sd, 
+		const BLOCK& block, 
+		const LLInitParam::predicate_rule_t rules = LLInitParam::default_parse_rules(),
+		const LLInitParam::BaseBlock* diff_block = NULL)
+	{
+		if (!diff_block 
+			&& !rules.isAmbivalent(LLInitParam::HAS_DEFAULT_VALUE))
+		{
+			diff_block = &LLInitParam::defaultValue<BLOCK>();
+		}
+		writeSDImpl(sd, block, rules, diff_block);
+	}
 
 	/*virtual*/ std::string getCurrentElementName();
 
 private:
+	void writeSDImpl(LLSD& sd, 
+		const LLInitParam::BaseBlock& block, 
+		const LLInitParam::predicate_rule_t,
+		const LLInitParam::BaseBlock* diff_block);
+
 	void submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack);
 
 	template<typename T>
diff --git a/indra/llcommon/llsingleton.h b/indra/llcommon/llsingleton.h
index 49d99f2cd0..f6b0a7194b 100644
--- a/indra/llcommon/llsingleton.h
+++ b/indra/llcommon/llsingleton.h
@@ -90,7 +90,7 @@ template <typename DERIVED_TYPE>
 class LLSingleton : private boost::noncopyable
 {
 	
-private:
+protected:
 	typedef enum e_init_state
 	{
 		UNINITIALIZED,
@@ -124,7 +124,7 @@ private:
 public:
 	virtual ~LLSingleton()
 	{
-		SingletonInstanceData& data = getData();
+		SingletonInstanceData& data = getSingletonData();
 		data.mSingletonInstance = NULL;
 		data.mInitState = DELETED;
 	}
@@ -151,29 +151,15 @@ public:
 	 */
 	static void deleteSingleton()
 	{
-		delete getData().mSingletonInstance;
-		getData().mSingletonInstance = NULL;
-		getData().mInitState = DELETED;
-	}
-
-	static SingletonInstanceData& getData()
-	{
-		// this is static to cache the lookup results
-		static void * & registry = LLSingletonRegistry::get<DERIVED_TYPE>();
-
-		// *TODO - look into making this threadsafe
-		if(NULL == registry)
-		{
-			static SingletonInstanceData data;
-			registry = &data;
-		}
-
-		return *static_cast<SingletonInstanceData *>(registry);
+		SingletonInstanceData& data = getSingletonData();
+		delete data.mSingletonInstance;
+		data.mSingletonInstance = NULL;
+		data.mInitState = DELETED;
 	}
 
 	static DERIVED_TYPE* getInstance()
 	{
-		SingletonInstanceData& data = getData();
+		SingletonInstanceData& data = getSingletonData();
 
 		if (data.mInitState == CONSTRUCTING)
 		{
@@ -197,6 +183,12 @@ public:
 		return data.mSingletonInstance;
 	}
 
+	static DERIVED_TYPE* getIfExists()
+	{
+		SingletonInstanceData& data = getSingletonData();
+		return data.mSingletonInstance;
+	}
+
 	// Reference version of getInstance()
 	// Preferred over getInstance() as it disallows checking for NULL
 	static DERIVED_TYPE& instance()
@@ -208,17 +200,31 @@ public:
 	// Use this to avoid accessing singletons before the can safely be constructed
 	static bool instanceExists()
 	{
-		return getData().mInitState == INITIALIZED;
+		return getSingletonData().mInitState == INITIALIZED;
 	}
 	
 	// Has this singleton already been deleted?
 	// Use this to avoid accessing singletons from a static object's destructor
 	static bool destroyed()
 	{
-		return getData().mInitState == DELETED;
+		return getSingletonData().mInitState == DELETED;
 	}
 
 private:
+	static SingletonInstanceData& getSingletonData()
+	{
+		// this is static to cache the lookup results
+		static void * & registry = LLSingletonRegistry::get<DERIVED_TYPE>();
+
+		// *TODO - look into making this threadsafe
+		if(NULL == registry)
+		{
+			static SingletonInstanceData data;
+			registry = &data;
+		}
+
+		return *static_cast<SingletonInstanceData *>(registry);
+	}
 	virtual void initSingleton() {}
 };
 
diff --git a/indra/llcommon/llskipmap.h b/indra/llcommon/llskipmap.h
index 49ff2928d1..ed53973baa 100644
--- a/indra/llcommon/llskipmap.h
+++ b/indra/llcommon/llskipmap.h
@@ -210,8 +210,7 @@ inline LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::LLSkipMap()
 	:	mInsertFirst(NULL),
 		mEquals(defaultEquals)
 {
-	// Skipmaps must have binary depth of at least 2
-	cassert(BINARY_DEPTH >= 2);
+	llstatic_assert(BINARY_DEPTH >= 2, "Skipmaps must have binary depth of at least 2");
 
 	S32 i;
 	for (i = 0; i < BINARY_DEPTH; i++)
@@ -229,8 +228,7 @@ inline LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::LLSkipMap(BOOL	(*insert_f
 	:	mInsertFirst(insert_first),
 		mEquals(equals)
 {
-	// Skipmaps must have binary depth of at least 2
-	cassert(BINARY_DEPTH >= 2);
+	llstatic_assert(BINARY_DEPTH >= 2, "Skipmaps must have binary depth of at least 2");
 
 	mLevel = 1;
 	S32 i;
diff --git a/indra/llcommon/llstacktrace.cpp b/indra/llcommon/llstacktrace.cpp
index ccd7ef91c2..e0e9056380 100644
--- a/indra/llcommon/llstacktrace.cpp
+++ b/indra/llcommon/llstacktrace.cpp
@@ -32,7 +32,7 @@
 #include <iostream>
 #include <sstream>
 
-#include "windows.h"
+#include "llwin32headerslean.h"
 #include "Dbghelp.h"
 
 typedef USHORT NTAPI RtlCaptureStackBackTrace_Function(
diff --git a/indra/llcommon/llstat.cpp b/indra/llcommon/llstat.cpp
deleted file mode 100644
index 3678c8e1c1..0000000000
--- a/indra/llcommon/llstat.cpp
+++ /dev/null
@@ -1,404 +0,0 @@
-/** 
- * @file llstat.cpp
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-#include "llstat.h"
-#include "lllivefile.h"
-#include "llerrorcontrol.h"
-#include "llframetimer.h"
-#include "timing.h"
-#include "llsd.h"
-#include "llsdserialize.h"
-#include "llstl.h"
-#include "u64.h"
-
-
-// statics
-//------------------------------------------------------------------------
-LLTimer LLStat::sTimer;
-LLFrameTimer LLStat::sFrameTimer;
-
-void LLStat::reset()
-{
-	mNumValues = 0;
-	mLastValue = 0.f;
-	delete[] mBins;
-	mBins      = new ValueEntry[mNumBins];
-	mCurBin = mNumBins-1;
-	mNextBin = 0;
-}
-
-LLStat::LLStat(std::string name, S32 num_bins, BOOL use_frame_timer)
-:	mUseFrameTimer(use_frame_timer),
-	mNumBins(num_bins),
-	mName(name),
-	mBins(NULL)
-{
-	llassert(mNumBins > 0);
-	mLastTime  = 0.f;
-
-	reset();
-
-	if (!mName.empty())
-	{
-		stat_map_t::iterator iter = getStatList().find(mName);
-		if (iter != getStatList().end())
-			llwarns << "LLStat with duplicate name: " << mName << llendl;
-		getStatList().insert(std::make_pair(mName, this));
-	}
-}
-
-LLStat::stat_map_t& LLStat::getStatList()
-{
-	static LLStat::stat_map_t stat_list;
-	return stat_list;
-}
-
-
-LLStat::~LLStat()
-{
-	delete[] mBins;
-
-	if (!mName.empty())
-	{
-		// handle multiple entries with the same name
-		stat_map_t::iterator iter = getStatList().find(mName);
-		while (iter != getStatList().end() && iter->second != this)
-			++iter;
-		getStatList().erase(iter);
-	}
-}
-
-void LLStat::start()
-{
-	if (mUseFrameTimer)
-	{
-		mBins[mNextBin].mBeginTime = sFrameTimer.getElapsedSeconds();
-	}
-	else
-	{
-		mBins[mNextBin].mBeginTime = sTimer.getElapsedTimeF64();
-	}
-}
-
-void LLStat::addValue(const F32 value)
-{
-	if (mNumValues < mNumBins)
-	{
-		mNumValues++;
-	}
-
-	// Increment the bin counters.
-	mCurBin++;
-	if (mCurBin >= mNumBins)
-	{
-		mCurBin = 0;
-	}
-	mNextBin++;
-	if (mNextBin >= mNumBins)
-	{
-		mNextBin = 0;
-	}
-
-	mBins[mCurBin].mValue = value;
-	if (mUseFrameTimer)
-	{
-		mBins[mCurBin].mTime = sFrameTimer.getElapsedSeconds();
-	}
-	else
-	{
-		mBins[mCurBin].mTime = sTimer.getElapsedTimeF64();
-	}
-	mBins[mCurBin].mDT = (F32)(mBins[mCurBin].mTime - mBins[mCurBin].mBeginTime);
-
-	//this value is used to prime the min/max calls
-	mLastTime = mBins[mCurBin].mTime;
-	mLastValue = value;
-
-	// Set the begin time for the next stat segment.
-	mBins[mNextBin].mBeginTime = mBins[mCurBin].mTime;
-	mBins[mNextBin].mTime = mBins[mCurBin].mTime;
-	mBins[mNextBin].mDT = 0.f;
-}
-
-
-F32 LLStat::getMax() const
-{
-	S32 i;
-	F32 current_max = mLastValue;
-	if (mNumBins == 0)
-	{
-		current_max = 0.f;
-	}
-	else
-	{
-		for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-		{
-			// Skip the bin we're currently filling.
-			if (i == mNextBin)
-			{
-				continue;
-			}
-			if (mBins[i].mValue > current_max)
-			{
-				current_max = mBins[i].mValue;
-			}
-		}
-	}
-	return current_max;
-}
-
-F32 LLStat::getMean() const
-{
-	S32 i;
-	F32 current_mean = 0.f;
-	S32 samples = 0;
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		current_mean += mBins[i].mValue;
-		samples++;
-	}
-
-	// There will be a wrap error at 2^32. :)
-	if (samples != 0)
-	{
-		current_mean /= samples;
-	}
-	else
-	{
-		current_mean = 0.f;
-	}
-	return current_mean;
-}
-
-F32 LLStat::getMin() const
-{
-	S32 i;
-	F32 current_min = mLastValue;
-
-	if (mNumBins == 0)
-	{
-		current_min = 0.f;
-	}
-	else
-	{
-		for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-		{
-			// Skip the bin we're currently filling.
-			if (i == mNextBin)
-			{
-				continue;
-			}
-			if (mBins[i].mValue < current_min)
-			{
-				current_min = mBins[i].mValue;
-			}
-		}
-	}
-	return current_min;
-}
-
-F32 LLStat::getPrev(S32 age) const
-{
-	S32 bin;
-	bin = mCurBin - age;
-
-	while (bin < 0)
-	{
-		bin += mNumBins;
-	}
-
-	if (bin == mNextBin)
-	{
-		// Bogus for bin we're currently working on.
-		return 0.f;
-	}
-	return mBins[bin].mValue;
-}
-
-F32 LLStat::getPrevPerSec(S32 age) const
-{
-	S32 bin;
-	bin = mCurBin - age;
-
-	while (bin < 0)
-	{
-		bin += mNumBins;
-	}
-
-	if (bin == mNextBin)
-	{
-		// Bogus for bin we're currently working on.
-		return 0.f;
-	}
-	return mBins[bin].mValue / mBins[bin].mDT;
-}
-
-F32 LLStat::getCurrent() const
-{
-	return mBins[mCurBin].mValue;
-}
-
-F32 LLStat::getCurrentPerSec() const
-{
-	return mBins[mCurBin].mValue / mBins[mCurBin].mDT;
-}
-
-F32 LLStat::getMeanPerSec() const
-{
-	S32 i;
-	F32 value = 0.f;
-	F32 dt    = 0.f;
-
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value += mBins[i].mValue;
-		dt    += mBins[i].mDT;
-	}
-
-	if (dt > 0.f)
-	{
-		return value/dt;
-	}
-	else
-	{
-		return 0.f;
-	}
-}
-
-F32 LLStat::getMeanDuration() const
-{
-	F32 dur = 0.0f;
-	S32 count = 0;
-	for (S32 i=0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		dur += mBins[i].mDT;
-		count++;
-	}
-
-	if (count > 0)
-	{
-		dur /= F32(count);
-		return dur;
-	}
-	else
-	{
-		return 0.f;
-	}
-}
-
-F32 LLStat::getMaxPerSec() const
-{
-	F32 value;
-
-	if (mNextBin != 0)
-	{
-		value = mBins[0].mValue/mBins[0].mDT;
-	}
-	else if (mNumValues > 0)
-	{
-		value = mBins[1].mValue/mBins[1].mDT;
-	}
-	else
-	{
-		value = 0.f;
-	}
-
-	for (S32 i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value = llmax(value, mBins[i].mValue/mBins[i].mDT);
-	}
-	return value;
-}
-
-F32 LLStat::getMinPerSec() const
-{
-	S32 i;
-	F32 value;
-	
-	if (mNextBin != 0)
-	{
-		value = mBins[0].mValue/mBins[0].mDT;
-	}
-	else if (mNumValues > 0)
-	{
-		value = mBins[1].mValue/mBins[0].mDT;
-	}
-	else
-	{
-		value = 0.f;
-	}
-
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value = llmin(value, mBins[i].mValue/mBins[i].mDT);
-	}
-	return value;
-}
-
-U32 LLStat::getNumValues() const
-{
-	return mNumValues;
-}
-
-S32 LLStat::getNumBins() const
-{
-	return mNumBins;
-}
-
-S32 LLStat::getNextBin() const
-{
-	return mNextBin;
-}
-
-F64 LLStat::getLastTime() const
-{
-	return mLastTime;
-}
diff --git a/indra/llcommon/llstat.h b/indra/llcommon/llstat.h
deleted file mode 100644
index 38377a010b..0000000000
--- a/indra/llcommon/llstat.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/** 
- * @file llstat.h
- * @brief Runtime statistics accumulation.
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLSTAT_H
-#define LL_LLSTAT_H
-
-#include <map>
-
-#include "lltimer.h"
-#include "llframetimer.h"
-
-class	LLSD;
-
-// ----------------------------------------------------------------------------
-class LL_COMMON_API LLStat
-{
-private:
-	typedef std::multimap<std::string, LLStat*> stat_map_t;
-
-	static stat_map_t& getStatList();
-
-public:
-	LLStat(std::string name = std::string(), S32 num_bins = 32, BOOL use_frame_timer = FALSE);
-	~LLStat();
-
-	void start();	// Start the timer for the current "frame", otherwise uses the time tracked from
-					// the last addValue
-	void reset();
-	void addValue(const F32 value = 1.f); // Adds the current value being tracked, and tracks the DT.
-	void addValue(const S32 value) { addValue((F32)value); }
-	void addValue(const U32 value) { addValue((F32)value); }
-
-	S32 getNextBin() const;
-	
-	F32 getPrev(S32 age) const;				// Age is how many "addValues" previously - zero is current
-	F32 getPrevPerSec(S32 age) const;		// Age is how many "addValues" previously - zero is current
-	F32 getCurrent() const;
-	F32 getCurrentPerSec() const;
-	
-	F32 getMin() const;
-	F32 getMinPerSec() const;
-	F32 getMean() const;
-	F32 getMeanPerSec() const;
-	F32 getMeanDuration() const;
-	F32 getMax() const;
-	F32 getMaxPerSec() const;
-
-	U32 getNumValues() const;
-	S32 getNumBins() const;
-
-	F64 getLastTime() const;
-private:
-	BOOL mUseFrameTimer;
-	U32 mNumValues;
-	U32 mNumBins;
-	F32 mLastValue;
-	F64 mLastTime;
-
-	struct ValueEntry
-	{
-		ValueEntry()
-		:	mValue(0.f),
-			mBeginTime(0.0),
-			mTime(0.0),
-			mDT(0.f)
-		{}
-		F32 mValue;
-		F64 mBeginTime;
-		F64 mTime;
-		F32 mDT;
-	};
-	ValueEntry* mBins;
-	S32 mCurBin;
-	S32 mNextBin;
-	
-	std::string mName;
-
-	static LLTimer sTimer;
-	static LLFrameTimer sFrameTimer;
-	
-public:
-	static LLStat* getStat(const std::string& name)
-	{
-		// return the first stat that matches 'name'
-		stat_map_t::iterator iter = getStatList().find(name);
-		if (iter != getStatList().end())
-			return iter->second;
-		else
-			return NULL;
-	}
-};
-	
-#endif // LL_STAT_
diff --git a/indra/llcommon/llstatenums.h b/indra/llcommon/llstatenums.h
index 81c4085d16..ab9b6709e8 100644
--- a/indra/llcommon/llstatenums.h
+++ b/indra/llcommon/llstatenums.h
@@ -26,7 +26,7 @@
 #ifndef LL_LLSTATENUMS_H
 #define LL_LLSTATENUMS_H
 
-enum
+enum ESimStatID
 {
 	LL_SIM_STAT_TIME_DILATION         =  0,
 	LL_SIM_STAT_FPS                   =  1,
diff --git a/indra/llcommon/llstl.h b/indra/llcommon/llstl.h
index d3941e1bc9..424138dad1 100644
--- a/indra/llcommon/llstl.h
+++ b/indra/llcommon/llstl.h
@@ -31,6 +31,7 @@
 #include <algorithm>
 #include <map>
 #include <vector>
+#include <list>
 #include <set>
 #include <deque>
 #include <typeinfo>
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 0c32679744..67bbc58bf5 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -28,11 +28,10 @@
 
 #include "llstring.h"
 #include "llerror.h"
+#include "llfasttimer.h"
 
 #if LL_WINDOWS
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headerslean.h"
 #include <winnls.h> // for WideCharToMultiByte
 #endif
 
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index 119efc7957..9d81ac25dd 100644
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -31,8 +31,9 @@
 #include <cstdio>
 #include <locale>
 #include <iomanip>
+#include <algorithm>
 #include "llsd.h"
-#include "llfasttimer.h"
+#include "llformat.h"
 
 #if LL_LINUX || LL_SOLARIS
 #include <wctype.h>
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index c96f2191f3..d6fe648b42 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -42,6 +42,7 @@
 #include "llprocessor.h"
 #include "llerrorcontrol.h"
 #include "llevents.h"
+#include "llformat.h"
 #include "lltimer.h"
 #include "llsdserialize.h"
 #include "llsdutil.h"
@@ -58,9 +59,7 @@
 using namespace llsd;
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #   include <psapi.h>               // GetPerformanceInfo() et al.
 #elif LL_DARWIN
 #	include <errno.h>
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index 1d56a52c32..6374b5398b 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -29,8 +29,11 @@
 #include "apr_portable.h"
 
 #include "llthread.h"
+#include "llmutex.h"
 
 #include "lltimer.h"
+#include "lltrace.h"
+#include "lltracethreadrecorder.h"
 
 #if LL_LINUX || LL_SOLARIS
 #include <sched.h>
@@ -56,12 +59,17 @@
 // 
 //----------------------------------------------------------------------------
 
-#if !LL_DARWIN
-U32 ll_thread_local sThreadID = 0;
+#if LL_DARWIN
+// statically allocated thread local storage not supported in Darwin executable formats
+#elif LL_WINDOWS
+U32 __declspec(thread) sThreadID = 0;
+#elif LL_LINUX
+U32 __thread sThreadID = 0;
 #endif 
 
 U32 LLThread::sIDIter = 0;
 
+
 LL_COMMON_API void assert_main_thread()
 {
 	static U32 s_thread_id = LLThread::currentID();
@@ -85,6 +93,8 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap
 {
 	LLThread *threadp = (LLThread *)datap;
 
+	LLTrace::ThreadRecorder* thread_recorder = new LLTrace::SlaveThreadRecorder();
+
 #if !LL_DARWIN
 	sThreadID = threadp->mID;
 #endif
@@ -97,16 +107,18 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap
 	// We're done with the run function, this thread is done executing now.
 	threadp->mStatus = STOPPED;
 
+	delete thread_recorder;
+
 	return NULL;
 }
 
-
 LLThread::LLThread(const std::string& name, apr_pool_t *poolp) :
 	mPaused(FALSE),
 	mName(name),
 	mAPRThreadp(NULL),
 	mStatus(STOPPED)
 {
+
 	mID = ++sIDIter;
 
 	// Thread creation probably CAN be paranoid about APR being initialized, if necessary
@@ -152,7 +164,7 @@ void LLThread::shutdown()
 			//llinfos << "LLThread::~LLThread() Killing thread " << mName << " Status: " << mStatus << llendl;
 			// Now wait a bit for the thread to exit
 			// It's unclear whether I should even bother doing this - this destructor
-			// should netver get called unless we're already stopped, really...
+			// should never get called unless we're already stopped, really...
 			S32 counter = 0;
 			const S32 MAX_WAIT = 600;
 			while (counter < MAX_WAIT)
@@ -282,7 +294,13 @@ void LLThread::setQuitting()
 // static
 U32 LLThread::currentID()
 {
+#if LL_DARWIN
+	// statically allocated thread local storage not supported in Darwin executable formats
 	return (U32)apr_os_thread_current();
+#else
+	return sThreadID;
+#endif
+
 }
 
 // static
@@ -315,155 +333,6 @@ void LLThread::wakeLocked()
 
 //============================================================================
 
-LLMutex::LLMutex(apr_pool_t *poolp) :
-	mAPRMutexp(NULL), mCount(0), mLockingThread(NO_THREAD)
-{
-	//if (poolp)
-	//{
-	//	mIsLocalPool = FALSE;
-	//	mAPRPoolp = poolp;
-	//}
-	//else
-	{
-		mIsLocalPool = TRUE;
-		apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread
-	}
-	apr_thread_mutex_create(&mAPRMutexp, APR_THREAD_MUTEX_UNNESTED, mAPRPoolp);
-}
-
-
-LLMutex::~LLMutex()
-{
-#if MUTEX_DEBUG
-	//bad assertion, the subclass LLSignal might be "locked", and that's OK
-	//llassert_always(!isLocked()); // better not be locked!
-#endif
-	apr_thread_mutex_destroy(mAPRMutexp);
-	mAPRMutexp = NULL;
-	if (mIsLocalPool)
-	{
-		apr_pool_destroy(mAPRPoolp);
-	}
-}
-
-
-void LLMutex::lock()
-{
-	if(isSelfLocked())
-	{ //redundant lock
-		mCount++;
-		return;
-	}
-	
-	apr_thread_mutex_lock(mAPRMutexp);
-	
-#if MUTEX_DEBUG
-	// Have to have the lock before we can access the debug info
-	U32 id = LLThread::currentID();
-	if (mIsLocked[id] != FALSE)
-		llerrs << "Already locked in Thread: " << id << llendl;
-	mIsLocked[id] = TRUE;
-#endif
-
-#if LL_DARWIN
-	mLockingThread = LLThread::currentID();
-#else
-	mLockingThread = sThreadID;
-#endif
-}
-
-void LLMutex::unlock()
-{
-	if (mCount > 0)
-	{ //not the root unlock
-		mCount--;
-		return;
-	}
-	
-#if MUTEX_DEBUG
-	// Access the debug info while we have the lock
-	U32 id = LLThread::currentID();
-	if (mIsLocked[id] != TRUE)
-		llerrs << "Not locked in Thread: " << id << llendl;	
-	mIsLocked[id] = FALSE;
-#endif
-
-	mLockingThread = NO_THREAD;
-	apr_thread_mutex_unlock(mAPRMutexp);
-}
-
-bool LLMutex::isLocked()
-{
-	apr_status_t status = apr_thread_mutex_trylock(mAPRMutexp);
-	if (APR_STATUS_IS_EBUSY(status))
-	{
-		return true;
-	}
-	else
-	{
-		apr_thread_mutex_unlock(mAPRMutexp);
-		return false;
-	}
-}
-
-bool LLMutex::isSelfLocked()
-{
-#if LL_DARWIN
-	return mLockingThread == LLThread::currentID();
-#else
-	return mLockingThread == sThreadID;
-#endif
-}
-
-U32 LLMutex::lockingThread() const
-{
-	return mLockingThread;
-}
-
-//============================================================================
-
-LLCondition::LLCondition(apr_pool_t *poolp) :
-	LLMutex(poolp)
-{
-	// base class (LLMutex) has already ensured that mAPRPoolp is set up.
-
-	apr_thread_cond_create(&mAPRCondp, mAPRPoolp);
-}
-
-
-LLCondition::~LLCondition()
-{
-	apr_thread_cond_destroy(mAPRCondp);
-	mAPRCondp = NULL;
-}
-
-
-void LLCondition::wait()
-{
-	if (!isLocked())
-	{ //mAPRMutexp MUST be locked before calling apr_thread_cond_wait
-		apr_thread_mutex_lock(mAPRMutexp);
-#if MUTEX_DEBUG
-		// avoid asserts on destruction in non-release builds
-		U32 id = LLThread::currentID();
-		mIsLocked[id] = TRUE;
-#endif
-	}
-	apr_thread_cond_wait(mAPRCondp, mAPRMutexp);
-}
-
-void LLCondition::signal()
-{
-	apr_thread_cond_signal(mAPRCondp);
-}
-
-void LLCondition::broadcast()
-{
-	apr_thread_cond_broadcast(mAPRCondp);
-}
-
-//============================================================================
-
 //----------------------------------------------------------------------------
 
 //static
@@ -514,7 +383,6 @@ LLThreadSafeRefCount::~LLThreadSafeRefCount()
 	}
 }
 
-
 //============================================================================
 
 LLResponder::~LLResponder()
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h
index 5c8bbca2ca..92323f5fda 100644
--- a/indra/llcommon/llthread.h
+++ b/indra/llcommon/llthread.h
@@ -30,20 +30,14 @@
 #include "llapp.h"
 #include "llapr.h"
 #include "apr_thread_cond.h"
+#include "llmutex.h"
 
-class LLThread;
-class LLMutex;
-class LLCondition;
-
-#if LL_WINDOWS
-#define ll_thread_local __declspec(thread)
-#else
-#define ll_thread_local __thread
-#endif
+LL_COMMON_API void assert_main_thread();
 
 class LL_COMMON_API LLThread
 {
 private:
+	friend class LLMutex;
 	static U32 sIDIter;
 
 public:
@@ -101,7 +95,7 @@ private:
 
 protected:
 	std::string			mName;
-	LLCondition*		mRunCondition;
+	class LLCondition*	mRunCondition;
 	LLMutex*			mDataLock;
 
 	apr_thread_t		*mAPRThreadp;
@@ -139,75 +133,6 @@ protected:
 	// mDataLock->unlock();
 };
 
-//============================================================================
-
-#define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO)
-
-class LL_COMMON_API LLMutex
-{
-public:
-	typedef enum
-	{
-		NO_THREAD = 0xFFFFFFFF
-	} e_locking_thread;
-
-	LLMutex(apr_pool_t *apr_poolp); // NULL pool constructs a new pool for the mutex
-	virtual ~LLMutex();
-	
-	void lock();		// blocks
-	void unlock();
-	bool isLocked(); 	// non-blocking, but does do a lock/unlock so not free
-	bool isSelfLocked(); //return true if locked in a same thread
-	U32 lockingThread() const; //get ID of locking thread
-	
-protected:
-	apr_thread_mutex_t *mAPRMutexp;
-	mutable U32			mCount;
-	mutable U32			mLockingThread;
-	
-	apr_pool_t			*mAPRPoolp;
-	BOOL				mIsLocalPool;
-	
-#if MUTEX_DEBUG
-	std::map<U32, BOOL> mIsLocked;
-#endif
-};
-
-// Actually a condition/mutex pair (since each condition needs to be associated with a mutex).
-class LL_COMMON_API LLCondition : public LLMutex
-{
-public:
-	LLCondition(apr_pool_t *apr_poolp); // Defaults to global pool, could use the thread pool as well.
-	~LLCondition();
-	
-	void wait();		// blocks
-	void signal();
-	void broadcast();
-	
-protected:
-	apr_thread_cond_t *mAPRCondp;
-};
-
-class LLMutexLock
-{
-public:
-	LLMutexLock(LLMutex* mutex)
-	{
-		mMutex = mutex;
-		
-		if(mMutex)
-			mMutex->lock();
-	}
-	~LLMutexLock()
-	{
-		if(mMutex)
-			mMutex->unlock();
-	}
-private:
-	LLMutex* mMutex;
-};
-
-//============================================================================
 
 void LLThread::lockData()
 {
diff --git a/indra/llcommon/llthreadlocalstorage.cpp b/indra/llcommon/llthreadlocalstorage.cpp
new file mode 100644
index 0000000000..7858ee5429
--- /dev/null
+++ b/indra/llcommon/llthreadlocalstorage.cpp
@@ -0,0 +1,101 @@
+/** 
+ * @file llthreadlocalstorage.cpp
+ * @author Richard
+ * @date 2013-1-11
+ * @brief implementation of thread local storage utility classes
+ *
+ * $LicenseInfo:firstyear=2013&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llthreadlocalstorage.h"
+
+//
+//LLThreadLocalPointerBase
+//
+bool LLThreadLocalPointerBase::sInitialized = false;
+
+void LLThreadLocalPointerBase::set( void* value )
+{
+	llassert(sInitialized && mThreadKey);
+
+	apr_status_t result = apr_threadkey_private_set((void*)value, mThreadKey);
+	if (result != APR_SUCCESS)
+	{
+		ll_apr_warn_status(result);
+		llerrs << "Failed to set thread local data" << llendl;
+	}
+}
+
+void LLThreadLocalPointerBase::initStorage( )
+{
+	apr_status_t result = apr_threadkey_private_create(&mThreadKey, NULL, gAPRPoolp);
+	if (result != APR_SUCCESS)
+	{
+		ll_apr_warn_status(result);
+		llerrs << "Failed to allocate thread local data" << llendl;
+	}
+}
+
+void LLThreadLocalPointerBase::destroyStorage()
+{
+	if (sInitialized)
+	{
+		if (mThreadKey)
+		{
+			apr_status_t result = apr_threadkey_private_delete(mThreadKey);
+			if (result != APR_SUCCESS)
+			{
+				ll_apr_warn_status(result);
+				llerrs << "Failed to delete thread local data" << llendl;
+			}
+		}
+	}
+}
+
+void LLThreadLocalPointerBase::initAllThreadLocalStorage()
+{
+	if (!sInitialized)
+	{
+		for (LLInstanceTracker<LLThreadLocalPointerBase>::instance_iter it = beginInstances(), end_it = endInstances();
+			it != end_it;
+			++it)
+		{
+			(*it).initStorage();
+		}
+		sInitialized = true;
+	}
+}
+
+void LLThreadLocalPointerBase::destroyAllThreadLocalStorage()
+{
+	if (sInitialized)
+	{
+		//for (LLInstanceTracker<LLThreadLocalPointerBase>::instance_iter it = beginInstances(), end_it = endInstances();
+		//	it != end_it;
+		//	++it)
+		//{
+		//	(*it).destroyStorage();
+		//}
+		sInitialized = false;
+	}
+}
diff --git a/indra/llcommon/llthreadlocalstorage.h b/indra/llcommon/llthreadlocalstorage.h
new file mode 100644
index 0000000000..4873b2740d
--- /dev/null
+++ b/indra/llcommon/llthreadlocalstorage.h
@@ -0,0 +1,370 @@
+/** 
+ * @file llthreadlocalstorage.h
+ * @author Richard
+ * @brief Class wrappers for thread local storage
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTHREADLOCALSTORAGE_H
+#define LL_LLTHREADLOCALSTORAGE_H
+
+#include "llinstancetracker.h"
+#include "llapr.h"
+
+class LLThreadLocalPointerBase : public LLInstanceTracker<LLThreadLocalPointerBase>
+{
+public:
+	LLThreadLocalPointerBase()
+	:	mThreadKey(NULL)
+	{
+		if (sInitialized)
+		{
+			initStorage();
+		}
+	}
+
+	LLThreadLocalPointerBase( const LLThreadLocalPointerBase& other)
+		:	mThreadKey(NULL)
+	{
+		if (sInitialized)
+		{
+			initStorage();
+		}
+	}
+
+	~LLThreadLocalPointerBase()
+	{
+		destroyStorage();
+	}
+
+	static void initAllThreadLocalStorage();
+	static void destroyAllThreadLocalStorage();
+
+protected:
+	void set(void* value);
+
+	LL_FORCE_INLINE void* get() const
+	{
+		// llassert(sInitialized);
+		void* ptr;
+		apr_status_t result =
+		apr_threadkey_private_get(&ptr, mThreadKey);
+		if (result != APR_SUCCESS)
+		{
+			ll_apr_warn_status(result);
+			llerrs << "Failed to get thread local data" << llendl;
+		}
+		return ptr;
+	}
+
+	void initStorage();
+	void destroyStorage();
+
+protected:
+	apr_threadkey_t* mThreadKey;
+	static bool		sInitialized;
+};
+
+template <typename T>
+class LLThreadLocalPointer : public LLThreadLocalPointerBase
+{
+public:
+
+	LLThreadLocalPointer()
+	{}
+
+	explicit LLThreadLocalPointer(T* value)
+	{
+		set(value);
+	}
+
+
+	LLThreadLocalPointer(const LLThreadLocalPointer<T>& other)
+	:	LLThreadLocalPointerBase(other)
+	{
+		set(other.get());		
+	}
+
+	LL_FORCE_INLINE T* get() const
+	{
+		return (T*)LLThreadLocalPointerBase::get();
+	}
+
+	T* operator -> () const
+	{
+		return (T*)get();
+	}
+
+	T& operator*() const
+	{
+		return *(T*)get();
+	}
+
+	LLThreadLocalPointer<T>& operator = (T* value)
+	{
+		set((void*)value);
+		return *this;
+	}
+
+	bool operator ==(const T* other) const
+	{
+		if (!sInitialized) return false;
+		return get() == other;
+	}
+};
+
+template<typename DERIVED_TYPE>
+class LLThreadLocalSingleton
+{
+	typedef enum e_init_state
+	{
+		UNINITIALIZED = 0,
+		CONSTRUCTING,
+		INITIALIZING,
+		INITIALIZED,
+		DELETED
+	} EInitState;
+
+public:
+	LLThreadLocalSingleton()
+	{}
+	
+	virtual ~LLThreadLocalSingleton()
+	{
+#if LL_DARWIN
+        pthread_setspecific(sInstanceKey, NULL);
+#else
+        sInstance = NULL;
+#endif
+		setInitState(DELETED);
+	}
+
+	static void deleteSingleton()
+	{
+		delete getIfExists();
+	}
+
+	static DERIVED_TYPE* getInstance()
+	{
+        EInitState init_state = getInitState();
+		if (init_state == CONSTRUCTING)
+		{
+			llerrs << "Tried to access singleton " << typeid(DERIVED_TYPE).name() << " from singleton constructor!" << llendl;
+		}
+
+		if (init_state == DELETED)
+		{
+			llwarns << "Trying to access deleted singleton " << typeid(DERIVED_TYPE).name() << " creating new instance" << llendl;
+		}
+
+#if LL_DARWIN
+        createTLSInstance();
+#endif
+		if (!getIfExists())
+		{
+			setInitState(CONSTRUCTING);
+            DERIVED_TYPE* instancep = new DERIVED_TYPE();
+#if LL_DARWIN
+            S32 result = pthread_setspecific(sInstanceKey, (void*)instancep);
+            if (result != 0)
+            {
+                llerrs << "Could not set thread local storage" << llendl;
+            }
+#else
+			sInstance = instancep;
+#endif
+			setInitState(INITIALIZING);
+			instancep->initSingleton();
+			setInitState(INITIALIZED);
+		}
+
+        return getIfExists();
+	}
+
+	static DERIVED_TYPE* getIfExists()
+	{
+#if LL_DARWIN
+        return (DERIVED_TYPE*)pthread_getspecific(sInstanceKey);
+#else
+		return sInstance;
+#endif
+	}
+
+	// Reference version of getInstance()
+	// Preferred over getInstance() as it disallows checking for NULL
+	static DERIVED_TYPE& instance()
+	{
+		return *getInstance();
+	}
+
+	// Has this singleton been created uet?
+	// Use this to avoid accessing singletons before the can safely be constructed
+	static bool instanceExists()
+	{
+		return getInitState() == INITIALIZED;
+	}
+
+	// Has this singleton already been deleted?
+	// Use this to avoid accessing singletons from a static object's destructor
+	static bool destroyed()
+	{
+		return getInitState() == DELETED;
+	}
+private:
+#if LL_DARWIN
+    static void createTLSInitState()
+    {
+        static S32 key_created = pthread_key_create(&sInitStateKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+    
+    static void createTLSInstance()
+    {
+        static S32 key_created = pthread_key_create(&sInstanceKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+#endif
+    static EInitState getInitState()
+    {
+#if LL_DARWIN
+        createTLSInitState();
+        return (EInitState)(int)pthread_getspecific(sInitStateKey);
+#else
+        return sInitState;
+#endif
+    }
+    
+    static void setInitState(EInitState state)
+    {
+#if LL_DARWIN
+        createTLSInitState();
+        pthread_setspecific(sInitStateKey, (void*)state);
+#else
+        sInitState = state;
+#endif
+    }
+	LLThreadLocalSingleton(const LLThreadLocalSingleton& other);
+	virtual void initSingleton() {}
+
+#ifdef LL_WINDOWS
+	static __declspec(thread) DERIVED_TYPE* sInstance;
+	static __declspec(thread) EInitState sInitState;
+#elif LL_LINUX
+	static __thread DERIVED_TYPE* sInstance;
+	static __thread EInitState sInitState;
+#elif LL_DARWIN
+    static pthread_key_t sInstanceKey;
+    static pthread_key_t sInitStateKey;
+#endif
+};
+
+#if LL_WINDOWS
+template<typename DERIVED_TYPE>
+__declspec(thread) DERIVED_TYPE* LLThreadLocalSingleton<DERIVED_TYPE>::sInstance = NULL;
+
+template<typename DERIVED_TYPE>
+__declspec(thread) typename LLThreadLocalSingleton<DERIVED_TYPE>::EInitState LLThreadLocalSingleton<DERIVED_TYPE>::sInitState = LLThreadLocalSingleton<DERIVED_TYPE>::UNINITIALIZED;
+#elif LL_LINUX
+template<typename DERIVED_TYPE>
+__thread DERIVED_TYPE* LLThreadLocalSingleton<DERIVED_TYPE>::sInstance = NULL;
+
+template<typename DERIVED_TYPE>
+__thread typename LLThreadLocalSingleton<DERIVED_TYPE>::EInitState LLThreadLocalSingleton<DERIVED_TYPE>::sInitState = LLThreadLocalSingleton<DERIVED_TYPE>::UNINITIALIZED;
+#elif LL_DARWIN
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingleton<DERIVED_TYPE>::sInstanceKey;
+
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingleton<DERIVED_TYPE>::sInitStateKey;
+
+#endif
+
+template<typename DERIVED_TYPE>
+class LLThreadLocalSingletonPointer
+{
+public:
+	void operator =(DERIVED_TYPE* value)
+	{
+		setInstance(value);
+	}
+    
+	LL_FORCE_INLINE static DERIVED_TYPE* getInstance()
+	{
+#if LL_DARWIN
+        createTLSKey();
+        return (DERIVED_TYPE*)pthread_getspecific(sInstanceKey);
+#else
+		return sInstance;
+#endif
+	}
+
+	LL_FORCE_INLINE static void setInstance(DERIVED_TYPE* instance)
+	{
+#if LL_DARWIN
+        createTLSKey();
+        pthread_setspecific(sInstanceKey, (void*)instance);
+#else
+		sInstance = instance;
+#endif
+	}
+
+private:
+#if LL_WINDOWS
+	static __declspec(thread) DERIVED_TYPE* sInstance;
+#elif LL_LINUX
+	static __thread DERIVED_TYPE* sInstance;
+#elif LL_DARWIN
+    static void TLSError()
+    {
+        llerrs << "Could not create thread local storage" << llendl;
+    }
+    static void createTLSKey()
+    {
+        static S32 key_created = pthread_key_create(&sInstanceKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+    static pthread_key_t sInstanceKey;
+#endif
+};
+
+#if LL_WINDOWS
+template<typename DERIVED_TYPE>
+__declspec(thread) DERIVED_TYPE* LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstance = NULL;
+#elif LL_LINUX
+template<typename DERIVED_TYPE>
+__thread DERIVED_TYPE* LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstance = NULL;
+#elif LL_DARWIN
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstanceKey;
+#endif
+
+#endif // LL_LLTHREADLOCALSTORAGE_H
diff --git a/indra/llcommon/lltimer.cpp b/indra/llcommon/lltimer.cpp
index 9ebc6de7f4..838155d54d 100644
--- a/indra/llcommon/lltimer.cpp
+++ b/indra/llcommon/lltimer.cpp
@@ -31,11 +31,9 @@
 #include "u64.h"
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #elif LL_LINUX || LL_SOLARIS || LL_DARWIN
-#       include <errno.h>
+#   include <errno.h>
 #	include <sys/time.h>
 #else 
 #	error "architecture not supported"
@@ -287,14 +285,14 @@ LLTimer::~LLTimer()
 }
 
 // static
-U64 LLTimer::getTotalTime()
+LLUnitImplicit<LLUnits::Microseconds, U64> LLTimer::getTotalTime()
 {
 	// simply call into the implementation function.
 	return totalTime();
 }	
 
 // static
-F64 LLTimer::getTotalSeconds()
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getTotalSeconds()
 {
 	return U64_to_F64(getTotalTime()) * USEC_TO_SEC_F64;
 }
@@ -343,23 +341,23 @@ U64 getElapsedTimeAndUpdate(U64& lastClockCount)
 }
 
 
-F64 LLTimer::getElapsedTimeF64() const
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getElapsedTimeF64() const
 {
 	U64 last = mLastClockCount;
 	return (F64)getElapsedTimeAndUpdate(last) * gClockFrequencyInv;
 }
 
-F32 LLTimer::getElapsedTimeF32() const
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getElapsedTimeF32() const
 {
 	return (F32)getElapsedTimeF64();
 }
 
-F64 LLTimer::getElapsedTimeAndResetF64()
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getElapsedTimeAndResetF64()
 {
 	return (F64)getElapsedTimeAndUpdate(mLastClockCount) * gClockFrequencyInv;
 }
 
-F32 LLTimer::getElapsedTimeAndResetF32()
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getElapsedTimeAndResetF32()
 {
 	return (F32)getElapsedTimeAndResetF64();
 }
@@ -372,7 +370,7 @@ void  LLTimer::setTimerExpirySec(F32 expiration)
 		+ (U64)((F32)(expiration * gClockFrequency));
 }
 
-F32 LLTimer::getRemainingTimeF32() const
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getRemainingTimeF32() const
 {
 	U64 cur_ticks = get_clock_count();
 	if (cur_ticks > mExpirationTicks)
diff --git a/indra/llcommon/lltimer.h b/indra/llcommon/lltimer.h
index 513de0605d..0ba87d1e15 100644
--- a/indra/llcommon/lltimer.h
+++ b/indra/llcommon/lltimer.h
@@ -37,6 +37,7 @@
 #include <string>
 #include <list>
 // units conversions
+#include "llunit.h"
 #ifndef USEC_PER_SEC
     const U32	USEC_PER_SEC	= 1000000;
 #endif
@@ -55,7 +56,7 @@ public:
 protected:	
 	U64 mLastClockCount;
 	U64 mExpirationTicks;
-	BOOL mStarted;
+	bool mStarted;
 
 public:
 	LLTimer();
@@ -66,16 +67,16 @@ public:
 
 	// Return a high precision number of seconds since the start of
 	// this application instance.
-	static F64 getElapsedSeconds()
+	static LLUnitImplicit<LLUnits::Seconds, F64> getElapsedSeconds()
 	{
 		return sTimer->getElapsedTimeF64();
 	}
 
 	// Return a high precision usec since epoch
-	static U64 getTotalTime();
+	static LLUnitImplicit<LLUnits::Microseconds, U64> getTotalTime();
 
 	// Return a high precision seconds since epoch
-	static F64 getTotalSeconds();
+	static LLUnitImplicit<LLUnits::Seconds, F64> getTotalSeconds();
 
 
 	// MANIPULATORS
@@ -86,18 +87,18 @@ public:
 	void setTimerExpirySec(F32 expiration);
 	BOOL checkExpirationAndReset(F32 expiration);
 	BOOL hasExpired() const;
-	F32 getElapsedTimeAndResetF32();	// Returns elapsed time in seconds with reset
-	F64 getElapsedTimeAndResetF64();
+	LLUnitImplicit<LLUnits::Seconds, F32> getElapsedTimeAndResetF32();	// Returns elapsed time in seconds with reset
+	LLUnitImplicit<LLUnits::Seconds, F64> getElapsedTimeAndResetF64();
 
-	F32 getRemainingTimeF32() const;
+	LLUnitImplicit<LLUnits::Seconds, F32> getRemainingTimeF32() const;
 
 	static BOOL knownBadTimer();
 
 	// ACCESSORS
-	F32 getElapsedTimeF32() const;			// Returns elapsed time in seconds
-	F64 getElapsedTimeF64() const;			// Returns elapsed time in seconds
+	LLUnitImplicit<LLUnits::Seconds, F32> getElapsedTimeF32() const;			// Returns elapsed time in seconds
+	LLUnitImplicit<LLUnits::Seconds, F64> getElapsedTimeF64() const;			// Returns elapsed time in seconds
 
-	BOOL getStarted() const { return mStarted; }
+	bool getStarted() const { return mStarted; }
 
 
 	static U64 getCurrentClockCount();		// Returns the raw clockticks
diff --git a/indra/llcommon/lltrace.cpp b/indra/llcommon/lltrace.cpp
new file mode 100644
index 0000000000..463048008f
--- /dev/null
+++ b/indra/llcommon/lltrace.cpp
@@ -0,0 +1,115 @@
+/** 
+ * @file lltrace.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrace.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
+#include "llfasttimer.h"
+
+static S32 sInitializationCount = 0;
+
+namespace LLTrace
+{
+
+static MasterThreadRecorder* gMasterThreadRecorder = NULL;
+
+void init()
+{
+	if (sInitializationCount++ == 0)
+	{
+		gMasterThreadRecorder = new MasterThreadRecorder();
+	}
+}
+
+bool isInitialized()
+{
+	return sInitializationCount > 0; 
+}
+
+void cleanup()
+{
+	if (--sInitializationCount == 0)
+	{
+		delete gMasterThreadRecorder;
+		gMasterThreadRecorder = NULL;
+	}
+}
+
+MasterThreadRecorder& getMasterThreadRecorder()
+{
+	llassert(gMasterThreadRecorder != NULL);
+	return *gMasterThreadRecorder;
+}
+
+LLThreadLocalPointer<ThreadRecorder>& get_thread_recorder_ptr()
+{
+	static LLThreadLocalPointer<ThreadRecorder> s_thread_recorder;
+	return s_thread_recorder;
+}
+
+const LLThreadLocalPointer<ThreadRecorder>& get_thread_recorder()
+{
+	return get_thread_recorder_ptr();
+}
+
+void set_thread_recorder(ThreadRecorder* recorder)
+{
+	get_thread_recorder_ptr() = recorder;
+}
+
+
+TimeBlockTreeNode::TimeBlockTreeNode() 
+:	mBlock(NULL),
+	mParent(NULL),
+	mNeedsSorting(false)
+{}
+
+void TimeBlockTreeNode::setParent( TimeBlock* parent )
+{
+	llassert_always(parent != mBlock);
+	llassert_always(parent != NULL);
+
+	TimeBlockTreeNode* parent_tree_node = get_thread_recorder()->getTimeBlockTreeNode(parent->getIndex());
+	if (!parent_tree_node) return;
+
+	if (mParent)
+	{
+		std::vector<TimeBlock*>& children = mParent->getChildren();
+		std::vector<TimeBlock*>::iterator found_it = std::find(children.begin(), children.end(), mBlock);
+		if (found_it != children.end())
+		{
+			children.erase(found_it);
+		}
+	}
+
+	mParent = parent;
+	mBlock->getPrimaryAccumulator()->mParent = parent;
+	parent_tree_node->mChildren.push_back(mBlock);
+	parent_tree_node->mNeedsSorting = true;
+}
+
+}
diff --git a/indra/llcommon/lltrace.h b/indra/llcommon/lltrace.h
new file mode 100644
index 0000000000..71bf1e53e4
--- /dev/null
+++ b/indra/llcommon/lltrace.h
@@ -0,0 +1,845 @@
+/** 
+ * @file lltrace.h
+ * @brief Runtime statistics accumulation.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACE_H
+#define LL_LLTRACE_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llmemory.h"
+#include "llrefcount.h"
+#include "llunit.h"
+#include "llapr.h"
+#include "llthreadlocalstorage.h"
+
+#include <list>
+
+#define LL_RECORD_BLOCK_TIME(block_timer) LLTrace::TimeBlock::Recorder LL_GLUE_TOKENS(block_time_recorder, __COUNTER__)(block_timer);
+
+namespace LLTrace
+{
+class Recording;
+
+typedef LLUnit<LLUnits::Bytes, F64>			Bytes;
+typedef LLUnit<LLUnits::Kilobytes, F64>		Kilobytes;
+typedef LLUnit<LLUnits::Megabytes, F64>		Megabytes;
+typedef LLUnit<LLUnits::Gigabytes, F64>		Gigabytes;
+typedef LLUnit<LLUnits::Bits, F64>			Bits;
+typedef LLUnit<LLUnits::Kilobits, F64>		Kilobits;
+typedef LLUnit<LLUnits::Megabits, F64>		Megabits;
+typedef LLUnit<LLUnits::Gigabits, F64>		Gigabits;
+
+typedef LLUnit<LLUnits::Seconds, F64>		Seconds;
+typedef LLUnit<LLUnits::Milliseconds, F64>	Milliseconds;
+typedef LLUnit<LLUnits::Minutes, F64>		Minutes;
+typedef LLUnit<LLUnits::Hours, F64>			Hours;
+typedef LLUnit<LLUnits::Milliseconds, F64>	Milliseconds;
+typedef LLUnit<LLUnits::Microseconds, F64>	Microseconds;
+typedef LLUnit<LLUnits::Nanoseconds, F64>	Nanoseconds;
+
+typedef LLUnit<LLUnits::Meters, F64>		Meters;
+typedef LLUnit<LLUnits::Kilometers, F64>	Kilometers;
+typedef LLUnit<LLUnits::Centimeters, F64>	Centimeters;
+typedef LLUnit<LLUnits::Millimeters, F64>	Millimeters;
+
+void init();
+void cleanup();
+bool isInitialized();
+
+const LLThreadLocalPointer<class ThreadRecorder>& get_thread_recorder();
+void set_thread_recorder(class ThreadRecorder*);
+
+class MasterThreadRecorder& getMasterThreadRecorder();
+
+// one per thread per type
+template<typename ACCUMULATOR>
+class AccumulatorBuffer : public LLRefCount
+{
+	typedef AccumulatorBuffer<ACCUMULATOR> self_t;
+	static const U32 DEFAULT_ACCUMULATOR_BUFFER_SIZE = 64;
+private:
+	struct StaticAllocationMarker { };
+
+	AccumulatorBuffer(StaticAllocationMarker m)
+	:	mStorageSize(0),
+		mStorage(NULL),
+		mNextStorageSlot(0)
+	{
+	}
+
+public:
+
+	AccumulatorBuffer(const AccumulatorBuffer& other = *getDefaultBuffer())
+	:	mStorageSize(0),
+		mStorage(NULL),
+		mNextStorageSlot(other.mNextStorageSlot)
+	{
+		resize(other.mStorageSize);
+		for (S32 i = 0; i < mNextStorageSlot; i++)
+		{
+			mStorage[i] = other.mStorage[i];
+		}
+	}
+
+	~AccumulatorBuffer()
+	{
+		if (LLThreadLocalSingletonPointer<ACCUMULATOR>::getInstance() == mStorage)
+		{
+			LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(getDefaultBuffer()->mStorage);
+		}
+		delete[] mStorage;
+	}
+
+	LL_FORCE_INLINE ACCUMULATOR& operator[](size_t index) 
+	{ 
+		return mStorage[index]; 
+	}
+
+	LL_FORCE_INLINE const ACCUMULATOR& operator[](size_t index) const
+	{ 
+		return mStorage[index]; 
+	}
+
+	void addSamples(const AccumulatorBuffer<ACCUMULATOR>& other)
+	{
+		llassert(mNextStorageSlot == other.mNextStorageSlot);
+
+		for (size_t i = 0; i < mNextStorageSlot; i++)
+		{
+			mStorage[i].addSamples(other.mStorage[i]);
+		}
+	}
+
+	void copyFrom(const AccumulatorBuffer<ACCUMULATOR>& other)
+	{
+		for (size_t i = 0; i < mNextStorageSlot; i++)
+		{
+			mStorage[i] = other.mStorage[i];
+		}
+	}
+
+	void reset(const AccumulatorBuffer<ACCUMULATOR>* other = NULL)
+	{
+		for (size_t i = 0; i < mNextStorageSlot; i++)
+		{
+			mStorage[i].reset(other ? &other->mStorage[i] : NULL);
+		}
+	}
+
+	void makePrimary()
+	{
+		LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(mStorage);
+	}
+
+	bool isPrimary() const
+	{
+		return LLThreadLocalSingletonPointer<ACCUMULATOR>::getInstance() == mStorage;
+	}
+
+	LL_FORCE_INLINE static ACCUMULATOR* getPrimaryStorage() 
+	{ 
+		return LLThreadLocalSingletonPointer<ACCUMULATOR>::getInstance(); 
+	}
+
+	// NOTE: this is not thread-safe.  We assume that slots are reserved in the main thread before any child threads are spawned
+	size_t reserveSlot()
+	{
+		if (LLTrace::isInitialized())
+		{
+			llerrs << "Attempting to declare trace object after program initialization.  Trace objects should be statically initialized." << llendl;
+		}
+		size_t next_slot = mNextStorageSlot++;
+		if (next_slot >= mStorageSize)
+		{
+			resize(mStorageSize + (mStorageSize >> 2));
+		}
+		llassert(mStorage && next_slot < mStorageSize);
+		return next_slot;
+	}
+
+	void resize(size_t new_size)
+	{
+		if (new_size <= mStorageSize) return;
+
+		ACCUMULATOR* old_storage = mStorage;
+		mStorage = new ACCUMULATOR[new_size];
+		if (old_storage)
+		{
+			for (S32 i = 0; i < mStorageSize; i++)
+			{
+				mStorage[i] = old_storage[i];
+			}
+		}
+		mStorageSize = new_size;
+		delete[] old_storage;
+
+		self_t* default_buffer = getDefaultBuffer();
+		if (this != default_buffer
+			&& new_size > default_buffer->size())
+		{
+			//NB: this is not thread safe, but we assume that all resizing occurs during static initialization
+			default_buffer->resize(new_size);
+		}
+	}
+
+	size_t size() const
+	{
+		return mNextStorageSlot;
+	}
+
+	static self_t* getDefaultBuffer()
+	{
+		// this buffer is allowed to leak so that trace calls from global destructors have somewhere to put their data
+		// so as not to trigger an access violation
+		static self_t* sBuffer = new AccumulatorBuffer(StaticAllocationMarker());
+		static bool sInitialized = false;
+		if (!sInitialized)
+		{
+			sBuffer->resize(DEFAULT_ACCUMULATOR_BUFFER_SIZE);
+			sInitialized = true;
+		}
+		return sBuffer;
+	}
+
+private:
+	ACCUMULATOR*								mStorage;
+	size_t										mStorageSize;
+	size_t										mNextStorageSlot;
+};
+
+//TODO: replace with decltype when C++11 is enabled
+template<typename T>
+struct MeanValueType
+{
+	typedef F64 type;
+};
+
+template<typename ACCUMULATOR>
+class TraceType 
+:	 public LLInstanceTracker<TraceType<ACCUMULATOR>, std::string>
+{
+public:
+	TraceType(const char* name, const char* description = NULL)
+	:	LLInstanceTracker<TraceType<ACCUMULATOR>, std::string>(name),
+		mName(name),
+		mDescription(description ? description : ""),
+		mAccumulatorIndex(AccumulatorBuffer<ACCUMULATOR>::getDefaultBuffer()->reserveSlot())
+	{}
+
+	LL_FORCE_INLINE ACCUMULATOR* getPrimaryAccumulator() const
+	{
+		ACCUMULATOR* accumulator_storage = AccumulatorBuffer<ACCUMULATOR>::getPrimaryStorage();
+		return &accumulator_storage[mAccumulatorIndex];
+	}
+
+	size_t getIndex() const { return mAccumulatorIndex; }
+
+	const std::string& getName() const { return mName; }
+
+protected:
+	const std::string	mName;
+	const std::string	mDescription;
+	const size_t		mAccumulatorIndex;
+};
+
+template<typename T>
+class MeasurementAccumulator
+{
+public:
+	typedef T value_t;
+	typedef MeasurementAccumulator<T> self_t;
+
+	MeasurementAccumulator()
+	:	mSum(0),
+		mMin((std::numeric_limits<T>::max)()),
+		mMax((std::numeric_limits<T>::min)()),
+		mMean(0),
+		mVarianceSum(0),
+		mNumSamples(0),
+		mLastValue(0)
+	{}
+
+	void sample(T value)
+	{
+		mNumSamples++;
+		mSum += value;
+		// NOTE: both conditions will hold on first pass through
+		if (value < mMin)
+		{
+			mMin = value;
+		}
+		if (value > mMax)
+		{
+			mMax = value;
+		}
+		F64 old_mean = mMean;
+		mMean += ((F64)value - old_mean) / (F64)mNumSamples;
+		mVarianceSum += ((F64)value - old_mean) * ((F64)value - mMean);
+		mLastValue = value;
+	}
+
+	void addSamples(const self_t& other)
+	{
+		if (other.mNumSamples)
+		{
+			mSum += other.mSum;
+			if (other.mMin < mMin)
+			{
+				mMin = other.mMin;
+			}
+			if (other.mMax > mMax)
+			{
+				mMax = other.mMax;
+			}
+			F64 weight = (F64)mNumSamples / (F64)(mNumSamples + other.mNumSamples);
+			mNumSamples += other.mNumSamples;
+			mMean = mMean * weight + other.mMean * (1.f - weight);
+
+			// combine variance (and hence standard deviation) of 2 different sized sample groups using
+			// the following formula: http://www.mrc-bsu.cam.ac.uk/cochrane/handbook/chapter_7/7_7_3_8_combining_groups.htm
+			F64 n_1 = (F64)mNumSamples,
+				n_2 = (F64)other.mNumSamples;
+			F64 m_1 = mMean,
+				m_2 = other.mMean;
+			F64 v_1 = mVarianceSum / mNumSamples,
+				v_2 = other.mVarianceSum / other.mNumSamples;
+			if (n_1 == 0)
+			{
+				mVarianceSum = other.mVarianceSum;
+			}
+			else if (n_2 == 0)
+			{
+				// don't touch variance
+				// mVarianceSum = mVarianceSum;
+			}
+			else
+			{
+				mVarianceSum = (F64)mNumSamples
+					* ((((n_1 - 1.f) * v_1)
+					+ ((n_2 - 1.f) * v_2)
+					+ (((n_1 * n_2) / (n_1 + n_2))
+					* ((m_1 * m_1) + (m_2 * m_2) - (2.f * m_1 * m_2))))
+					/ (n_1 + n_2 - 1.f));
+			}
+			mLastValue = other.mLastValue;
+		}
+	}
+
+	void reset(const self_t* other)
+	{
+		mNumSamples = 0;
+		mSum = 0;
+		mMin = 0;
+		mMax = 0;
+		mMean = 0;
+		mVarianceSum = 0;
+		mLastValue = other ? other->mLastValue : 0;
+	}
+
+	T	getSum() const { return (T)mSum; }
+	T	getMin() const { return (T)mMin; }
+	T	getMax() const { return (T)mMax; }
+	T	getLastValue() const { return (T)mLastValue; }
+	F64	getMean() const { return mMean; }
+	F64 getStandardDeviation() const { return sqrtf(mVarianceSum / mNumSamples); }
+	U32 getSampleCount() const { return mNumSamples; }
+
+private:
+	T	mSum,
+		mMin,
+		mMax,
+		mLastValue;
+
+	F64	mMean,
+		mVarianceSum;
+
+	U32	mNumSamples;
+};
+
+template<typename T>
+class CountAccumulator
+{
+public:
+	typedef CountAccumulator<T> self_t;
+	typedef T value_t;
+
+	CountAccumulator()
+	:	mSum(0),
+		mNumSamples(0)
+	{}
+
+	void add(T value)
+	{
+		mNumSamples++;
+		mSum += value;
+	}
+
+	void addSamples(const CountAccumulator<T>& other)
+	{
+		mSum += other.mSum;
+		mNumSamples += other.mNumSamples;
+	}
+
+	void reset(const self_t* other)
+	{
+		mNumSamples = 0;
+		mSum = 0;
+	}
+
+	T	getSum() const { return (T)mSum; }
+
+	U32 getSampleCount() const { return mNumSamples; }
+
+private:
+	T	mSum;
+
+	U32	mNumSamples;
+};
+
+class TimeBlockAccumulator
+{
+public:
+	typedef LLUnit<LLUnits::Seconds, F64> value_t;
+	typedef TimeBlockAccumulator self_t;
+
+	// fake class that allows us to view call count aspect of timeblock accumulator
+	struct CallCountAspect 
+	{
+		typedef U32 value_t;
+	};
+
+	struct SelfTimeAspect
+	{
+		typedef LLUnit<LLUnits::Seconds, F64> value_t;
+	};
+
+	TimeBlockAccumulator();
+	void addSamples(const self_t& other);
+	void reset(const self_t* other);
+
+	//
+	// members
+	//
+	U64							mStartTotalTimeCounter,
+								mTotalTimeCounter,
+								mSelfTimeCounter;
+	U32							mCalls;
+	class TimeBlock*			mParent;		// last acknowledged parent of this time block
+	class TimeBlock*			mLastCaller;	// used to bootstrap tree construction
+	U16							mActiveCount;	// number of timers with this ID active on stack
+	bool						mMoveUpTree;	// needs to be moved up the tree of timers at the end of frame
+
+};
+
+
+template<>
+struct MeanValueType<TraceType<TimeBlockAccumulator> >
+{
+	typedef LLUnit<LLUnits::Seconds, F64> type;
+};
+
+template<>
+class TraceType<TimeBlockAccumulator::CallCountAspect>
+:	public TraceType<TimeBlockAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+	:	TraceType<TimeBlockAccumulator>(name, description)
+	{}
+};
+
+template<>
+struct MeanValueType<TraceType<TimeBlockAccumulator::CallCountAspect> >
+{
+	typedef F64 type;
+};
+
+
+template<>
+class TraceType<TimeBlockAccumulator::SelfTimeAspect>
+	:	public TraceType<TimeBlockAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+		:	TraceType<TimeBlockAccumulator>(name, description)
+	{}
+};
+
+template<>
+struct MeanValueType<TraceType<TimeBlockAccumulator::SelfTimeAspect> >
+{
+	typedef LLUnit<LLUnits::Seconds, F64> type;
+};
+
+
+class TimeBlock;
+class TimeBlockTreeNode
+{
+public:
+	TimeBlockTreeNode();
+
+	void setParent(TimeBlock* parent);
+	TimeBlock* getParent() { return mParent; }
+
+	TimeBlock*					mBlock;
+	TimeBlock*					mParent;	
+	std::vector<TimeBlock*>		mChildren;
+	bool						mNeedsSorting;
+};
+
+
+template <typename T = F64>
+class MeasurementStatHandle
+:	public TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >
+{
+public:
+	typedef typename LLUnits::HighestPrecisionType<T>::type_t storage_t;
+	typedef TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> > trace_t;
+
+	MeasurementStatHandle(const char* name, const char* description = NULL) 
+	:	trace_t(name, description)
+	{}
+};
+
+template<typename T, typename VALUE_T>
+void sample(MeasurementStatHandle<T>& measurement, VALUE_T value)
+{
+	T converted_value(value);
+	measurement.getPrimaryAccumulator()->sample(LLUnits::rawValue(converted_value));
+}
+
+
+template <typename T = F64>
+class CountStatHandle
+:	public TraceType<CountAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >
+{
+public:
+	typedef typename LLUnits::HighestPrecisionType<T>::type_t storage_t;
+	typedef TraceType<CountAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> > trace_t;
+
+	CountStatHandle(const char* name, const char* description = NULL) 
+	:	trace_t(name)
+	{}
+
+};
+
+template<typename T, typename VALUE_T>
+void add(CountStatHandle<T>& count, VALUE_T value)
+{
+	T converted_value(value);
+	count.getPrimaryAccumulator()->add(LLUnits::rawValue(converted_value));
+}
+
+
+struct MemStatAccumulator
+{
+	MemStatAccumulator()
+	:	mSize(0),
+		mChildSize(0),
+		mAllocatedCount(0),
+		mDeallocatedCount(0)
+	{}
+
+	void addSamples(const MemStatAccumulator& other)
+	{
+		mSize += other.mSize;
+		mChildSize += other.mChildSize;
+		mAllocatedCount += other.mAllocatedCount;
+		mDeallocatedCount += other.mDeallocatedCount;
+	}
+
+	void reset(const MemStatAccumulator* other)
+	{
+		mSize = 0;
+		mChildSize = 0;
+		mAllocatedCount = 0;
+		mDeallocatedCount = 0;
+	}
+
+	size_t		mSize,
+				mChildSize;
+	int			mAllocatedCount,
+				mDeallocatedCount;
+};
+
+class MemStatHandle : public TraceType<MemStatAccumulator>
+{
+public:
+	typedef TraceType<MemStatAccumulator> trace_t;
+	MemStatHandle(const char* name)
+	:	trace_t(name)
+	{}
+};
+
+// measures effective memory footprint of specified type
+// specialize to cover different types
+
+template<typename T>
+struct MemFootprint
+{
+	static size_t measure(const T& value)
+	{
+		return sizeof(T);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(T);
+	}
+};
+
+template<typename T>
+struct MemFootprint<T*>
+{
+	static size_t measure(const T* value)
+	{
+		if (!value)
+		{
+			return 0;
+		}
+		return MemFootprint<T>::measure(*value);
+	}
+
+	static size_t measure()
+	{
+		return MemFootprint<T>::measure();
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::basic_string<T> >
+{
+	static size_t measure(const std::basic_string<T>& value)
+	{
+		return value.capacity() * sizeof(T);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::basic_string<T>);
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::vector<T> >
+{
+	static size_t measure(const std::vector<T>& value)
+	{
+		return value.capacity() * MemFootprint<T>::measure();
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::vector<T>);
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::list<T> >
+{
+	static size_t measure(const std::list<T>& value)
+	{
+		return value.size() * (MemFootprint<T>::measure() + sizeof(void*) * 2);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::list<T>);
+	}
+};
+
+template<typename DERIVED, size_t ALIGNMENT = LL_DEFAULT_HEAP_ALIGN>
+class MemTrackable
+{
+	template<typename TRACKED, typename TRACKED_IS_TRACKER>
+	struct TrackMemImpl;
+
+	typedef MemTrackable<DERIVED> mem_trackable_t;
+
+public:
+	typedef void mem_trackable_tag_t;
+
+	virtual ~MemTrackable()
+	{
+		memDisclaim(mMemFootprint);
+	}
+
+	void* operator new(size_t size) 
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize += size;
+			accumulator->mAllocatedCount++;
+		}
+
+		return ::operator new(size);
+	}
+
+	void operator delete(void* ptr, size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize -= size;
+			accumulator->mAllocatedCount--;
+			accumulator->mDeallocatedCount++;
+		}
+		::operator delete(ptr);
+	}
+
+	void *operator new [](size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize += size;
+			accumulator->mAllocatedCount++;
+		}
+
+		return ::operator new[](size);
+	}
+
+	void operator delete[](void* ptr, size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize -= size;
+			accumulator->mAllocatedCount--;
+			accumulator->mDeallocatedCount++;
+		}
+		::operator delete[](ptr);
+	}
+
+	// claim memory associated with other objects/data as our own, adding to our calculated footprint
+	template<typename CLAIM_T>
+	CLAIM_T& memClaim(CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::claim(*this, value);
+		return value;
+	}
+
+	template<typename CLAIM_T>
+	const CLAIM_T& memClaim(const CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::claim(*this, value);
+		return value;
+	}
+
+
+	void memClaim(size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		mMemFootprint += size;
+		if (accumulator)
+		{
+			accumulator->mSize += size;
+		}
+	}
+
+	// remove memory we had claimed from our calculated footprint
+	template<typename CLAIM_T>
+	CLAIM_T& memDisclaim(CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::disclaim(*this, value);
+		return value;
+	}
+
+	template<typename CLAIM_T>
+	const CLAIM_T& memDisclaim(const CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::disclaim(*this, value);
+		return value;
+	}
+
+	void memDisclaim(size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize -= size;
+		}
+		mMemFootprint -= size;
+	}
+
+private:
+	size_t mMemFootprint;
+
+	template<typename TRACKED, typename TRACKED_IS_TRACKER = void>
+	struct TrackMemImpl
+	{
+		static void claim(mem_trackable_t& tracker, const TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				size_t footprint = MemFootprint<TRACKED>::measure(tracked);
+				accumulator->mSize += footprint;
+				tracker.mMemFootprint += footprint;
+			}
+		}
+
+		static void disclaim(mem_trackable_t& tracker, const TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				size_t footprint = MemFootprint<TRACKED>::measure(tracked);
+				accumulator->mSize -= footprint;
+				tracker.mMemFootprint -= footprint;
+			}
+		}
+	};
+
+	template<typename TRACKED>
+	struct TrackMemImpl<TRACKED, typename TRACKED::mem_trackable_tag_t>
+	{
+		static void claim(mem_trackable_t& tracker, TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				accumulator->mChildSize += MemFootprint<TRACKED>::measure(tracked);
+			}
+		}
+
+		static void disclaim(mem_trackable_t& tracker, TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				accumulator->mChildSize -= MemFootprint<TRACKED>::measure(tracked);
+			}
+		}
+	};
+};
+
+}
+#endif // LL_LLTRACE_H
diff --git a/indra/llcommon/lltracerecording.cpp b/indra/llcommon/lltracerecording.cpp
new file mode 100644
index 0000000000..b70d42b082
--- /dev/null
+++ b/indra/llcommon/lltracerecording.cpp
@@ -0,0 +1,666 @@
+/** 
+ * @file lltracesampler.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrace.h"
+#include "llfasttimer.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
+#include "llthread.h"
+
+namespace LLTrace
+{
+
+
+///////////////////////////////////////////////////////////////////////
+// RecordingBuffers
+///////////////////////////////////////////////////////////////////////
+
+RecordingBuffers::RecordingBuffers() 
+:	mCountsFloat(new AccumulatorBuffer<CountAccumulator<F64> >()),
+	mMeasurementsFloat(new AccumulatorBuffer<MeasurementAccumulator<F64> >()),
+	mCounts(new AccumulatorBuffer<CountAccumulator<S64> >()),
+	mMeasurements(new AccumulatorBuffer<MeasurementAccumulator<S64> >()),
+	mStackTimers(new AccumulatorBuffer<TimeBlockAccumulator>()),
+	mMemStats(new AccumulatorBuffer<MemStatAccumulator>())
+{}
+
+void RecordingBuffers::handOffTo(RecordingBuffers& other)
+{
+	other.mCountsFloat.write()->reset(mCountsFloat);
+	other.mMeasurementsFloat.write()->reset(mMeasurementsFloat);
+	other.mCounts.write()->reset(mCounts);
+	other.mMeasurements.write()->reset(mMeasurements);
+	other.mStackTimers.write()->reset(mStackTimers);
+	other.mMemStats.write()->reset(mMemStats);
+}
+
+void RecordingBuffers::makePrimary()
+{
+	mCountsFloat.write()->makePrimary();
+	mMeasurementsFloat.write()->makePrimary();
+	mCounts.write()->makePrimary();
+	mMeasurements.write()->makePrimary();
+	mStackTimers.write()->makePrimary();
+	mMemStats.write()->makePrimary();
+
+	ThreadRecorder* thread_recorder = get_thread_recorder().get();
+	AccumulatorBuffer<TimeBlockAccumulator>& timer_accumulator_buffer = *mStackTimers.write();
+	// update stacktimer parent pointers
+	for (S32 i = 0, end_i = mStackTimers->size(); i < end_i; i++)
+	{
+		TimeBlockTreeNode* tree_node = thread_recorder->getTimeBlockTreeNode(i);
+		if (tree_node)
+		{
+			timer_accumulator_buffer[i].mParent = tree_node->mParent;
+		}
+	}
+}
+
+bool RecordingBuffers::isPrimary() const
+{
+	return mCounts->isPrimary();
+}
+
+void RecordingBuffers::makeUnique()
+{
+	mCountsFloat.makeUnique();
+	mMeasurementsFloat.makeUnique();
+	mCounts.makeUnique();
+	mMeasurements.makeUnique();
+	mStackTimers.makeUnique();
+	mMemStats.makeUnique();
+}
+
+void RecordingBuffers::appendBuffers( const RecordingBuffers& other )
+{
+	mCountsFloat.write()->addSamples(*other.mCountsFloat);
+	mMeasurementsFloat.write()->addSamples(*other.mMeasurementsFloat);
+	mCounts.write()->addSamples(*other.mCounts);
+	mMeasurements.write()->addSamples(*other.mMeasurements);
+	mMemStats.write()->addSamples(*other.mMemStats);
+	mStackTimers.write()->addSamples(*other.mStackTimers);
+}
+
+void RecordingBuffers::mergeBuffers( const RecordingBuffers& other)
+{
+	mCountsFloat.write()->addSamples(*other.mCountsFloat);
+	mMeasurementsFloat.write()->addSamples(*other.mMeasurementsFloat);
+	mCounts.write()->addSamples(*other.mCounts);
+	mMeasurements.write()->addSamples(*other.mMeasurements);
+	mMemStats.write()->addSamples(*other.mMemStats);
+}
+
+void RecordingBuffers::resetBuffers(RecordingBuffers* other)
+{
+	mCountsFloat.write()->reset(other ? other->mCountsFloat : NULL);
+	mMeasurementsFloat.write()->reset(other ? other->mMeasurementsFloat : NULL);
+	mCounts.write()->reset(other ? other->mCounts : NULL);
+	mMeasurements.write()->reset(other ? other->mMeasurements : NULL);
+	mStackTimers.write()->reset(other ? other->mStackTimers : NULL);
+	mMemStats.write()->reset(other ? other->mMemStats : NULL);
+}
+
+///////////////////////////////////////////////////////////////////////
+// Recording
+///////////////////////////////////////////////////////////////////////
+
+Recording::Recording() 
+:	mElapsedSeconds(0)
+{}
+
+Recording::Recording( const Recording& other )
+:	RecordingBuffers(other),
+	mElapsedSeconds(other.mElapsedSeconds),
+	mSamplingTimer(other.mSamplingTimer)
+{
+	LLStopWatchControlsMixin<Recording>::setPlayState(other.getPlayState());
+}
+
+
+Recording::~Recording()
+{
+	stop();
+	llassert(isStopped());
+}
+
+void Recording::update()
+{
+	if (isStarted())
+	{
+		LLTrace::get_thread_recorder()->update(this);
+		mSamplingTimer.reset();
+	}
+}
+
+void Recording::handleReset()
+{
+	resetBuffers();
+
+	mElapsedSeconds = 0.0;
+	mSamplingTimer.reset();
+}
+
+void Recording::handleStart()
+{
+	mSamplingTimer.reset();
+	LLTrace::get_thread_recorder()->activate(this);
+}
+
+void Recording::handleStop()
+{
+	mElapsedSeconds += mSamplingTimer.getElapsedTimeF64();
+	LLTrace::TimeBlock::processTimes();
+	LLTrace::get_thread_recorder()->deactivate(this);
+}
+
+void Recording::handleSplitTo(Recording& other)
+{
+	stop();
+	other.restart();
+	handOffTo(other);
+}
+
+void Recording::appendRecording( const Recording& other )
+{
+	appendBuffers(other);
+	mElapsedSeconds += other.mElapsedSeconds;
+}
+
+void Recording::mergeRecording( const Recording& other)
+{
+	mergeBuffers(other);
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getSum(const TraceType<TimeBlockAccumulator>& stat) const
+{
+	const TimeBlockAccumulator& accumulator = (*mStackTimers)[stat.getIndex()];
+	return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter) 
+				/ (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getSum(const TraceType<TimeBlockAccumulator::SelfTimeAspect>& stat) const
+{
+	const TimeBlockAccumulator& accumulator = (*mStackTimers)[stat.getIndex()];
+	return (F64)(accumulator.mSelfTimeCounter) / (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+
+U32 Recording::getSum(const TraceType<TimeBlockAccumulator::CallCountAspect>& stat) const
+{
+	return (*mStackTimers)[stat.getIndex()].mCalls;
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getPerSec(const TraceType<TimeBlockAccumulator>& stat) const
+{
+	const TimeBlockAccumulator& accumulator = (*mStackTimers)[stat.getIndex()];
+
+	return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter) 
+				/ ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds);
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getPerSec(const TraceType<TimeBlockAccumulator::SelfTimeAspect>& stat) const
+{
+	const TimeBlockAccumulator& accumulator = (*mStackTimers)[stat.getIndex()];
+
+	return (F64)(accumulator.mSelfTimeCounter) 
+			/ ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds);
+}
+
+F32 Recording::getPerSec(const TraceType<TimeBlockAccumulator::CallCountAspect>& stat) const
+{
+	return (F32)(*mStackTimers)[stat.getIndex()].mCalls / mElapsedSeconds;
+}
+
+LLUnit<LLUnits::Bytes, U32> Recording::getSum(const TraceType<MemStatAccumulator>& stat) const
+{
+	return (*mMemStats)[stat.getIndex()].mAllocatedCount;
+}
+
+LLUnit<LLUnits::Bytes, F32> Recording::getPerSec(const TraceType<MemStatAccumulator>& stat) const
+{
+	return (F32)(*mMemStats)[stat.getIndex()].mAllocatedCount / mElapsedSeconds;
+}
+
+
+F64 Recording::getSum( const TraceType<CountAccumulator<F64> >& stat ) const
+{
+	return (*mCountsFloat)[stat.getIndex()].getSum();
+}
+
+S64 Recording::getSum( const TraceType<CountAccumulator<S64> >& stat ) const
+{
+	return (*mCounts)[stat.getIndex()].getSum();
+}
+
+F64 Recording::getSum( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (F64)(*mMeasurementsFloat)[stat.getIndex()].getSum();
+}
+
+S64 Recording::getSum( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (S64)(*mMeasurements)[stat.getIndex()].getSum();
+}
+
+
+
+F64 Recording::getPerSec( const TraceType<CountAccumulator<F64> >& stat ) const
+{
+	F64 sum = (*mCountsFloat)[stat.getIndex()].getSum();
+	return  (sum != 0.0) 
+		? (sum / mElapsedSeconds)
+		: 0.0;
+}
+
+F64 Recording::getPerSec( const TraceType<CountAccumulator<S64> >& stat ) const
+{
+	S64 sum = (*mCounts)[stat.getIndex()].getSum();
+	return (sum != 0) 
+		? ((F64)sum / mElapsedSeconds)
+		: 0.0;
+}
+
+U32 Recording::getSampleCount( const TraceType<CountAccumulator<F64> >& stat ) const
+{
+	return (*mCountsFloat)[stat.getIndex()].getSampleCount();
+}
+
+U32 Recording::getSampleCount( const TraceType<CountAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getSampleCount();
+}
+
+F64 Recording::getMin( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getMin();
+}
+
+S64 Recording::getMin( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getMin();
+}
+
+F64 Recording::getMax( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getMax();
+}
+
+S64 Recording::getMax( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getMax();
+}
+
+F64 Recording::getMean( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getMean();
+}
+
+F64 Recording::getMean( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getMean();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getLastValue( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getLastValue();
+}
+
+S64 Recording::getLastValue( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getLastValue();
+}
+
+U32 Recording::getSampleCount( const TraceType<MeasurementAccumulator<F64> >& stat ) const
+{
+	return (*mMeasurementsFloat)[stat.getIndex()].getSampleCount();
+}
+
+U32 Recording::getSampleCount( const TraceType<MeasurementAccumulator<S64> >& stat ) const
+{
+	return (*mMeasurements)[stat.getIndex()].getSampleCount();
+}
+
+///////////////////////////////////////////////////////////////////////
+// PeriodicRecording
+///////////////////////////////////////////////////////////////////////
+
+PeriodicRecording::PeriodicRecording( U32 num_periods, EPlayState state) 
+:	mAutoResize(num_periods == 0),
+	mCurPeriod(0),
+	mTotalValid(false)
+{
+	if (num_periods)
+	{
+		mRecordingPeriods.resize(num_periods);
+	}
+	setPlayState(state);
+}
+
+void PeriodicRecording::nextPeriod()
+{
+	EPlayState play_state = getPlayState();
+	Recording& old_recording = getCurRecordingPeriod();
+	if (mAutoResize)
+	{
+		mRecordingPeriods.push_back(Recording());
+	}
+	U32 num_periods = mRecordingPeriods.size();
+	mCurPeriod = (num_periods > 0) 
+				? (mCurPeriod + 1) % num_periods 
+				: mCurPeriod + 1;
+	old_recording.splitTo(getCurRecordingPeriod());
+
+	switch(play_state)
+	{
+	case STOPPED:
+		getCurRecordingPeriod().stop();
+		break;
+	case PAUSED:
+		getCurRecordingPeriod().pause();
+		break;
+	case STARTED:
+		break;
+	}
+	// new period, need to recalculate total
+	mTotalValid = false;
+}
+
+Recording& PeriodicRecording::getTotalRecording()
+{
+	if (!mTotalValid)
+	{
+		mTotalRecording.reset();
+		U32 num_periods = mRecordingPeriods.size();
+
+		if (num_periods)
+		{
+			for (S32 i = mCurPeriod + 1; i < mCurPeriod + num_periods; i++)
+			{
+				mTotalRecording.appendRecording(mRecordingPeriods[i % num_periods]);
+			}
+		}
+		else
+		{
+			for (S32 i = 0; i < mCurPeriod; i++)
+			{
+				mTotalRecording.appendRecording(mRecordingPeriods[i]);
+			}
+		}
+	}
+	mTotalValid = true;
+	return mTotalRecording;
+}
+
+void PeriodicRecording::start()
+{
+	getCurRecordingPeriod().start();
+}
+
+void PeriodicRecording::stop()
+{
+	getCurRecordingPeriod().stop();
+}
+
+void PeriodicRecording::pause()
+{
+	getCurRecordingPeriod().pause();
+}
+
+void PeriodicRecording::resume()
+{
+	getCurRecordingPeriod().resume();
+}
+
+void PeriodicRecording::restart()
+{
+	getCurRecordingPeriod().restart();
+}
+
+void PeriodicRecording::reset()
+{
+	getCurRecordingPeriod().reset();
+}
+
+void PeriodicRecording::splitTo(PeriodicRecording& other)
+{
+	getCurRecordingPeriod().splitTo(other.getCurRecordingPeriod());
+}
+
+void PeriodicRecording::splitFrom(PeriodicRecording& other)
+{
+	getCurRecordingPeriod().splitFrom(other.getCurRecordingPeriod());
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// ExtendableRecording
+///////////////////////////////////////////////////////////////////////
+
+void ExtendableRecording::extend()
+{
+	// stop recording to get latest data
+	mPotentialRecording.stop();
+	// push the data back to accepted recording
+	mAcceptedRecording.appendRecording(mPotentialRecording);
+	// flush data, so we can start from scratch
+	mPotentialRecording.reset();
+	// go back to play state we were in initially
+	mPotentialRecording.setPlayState(getPlayState());
+}
+
+void ExtendableRecording::start()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::start();
+	mPotentialRecording.start();
+}
+
+void ExtendableRecording::stop()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::stop();
+	mPotentialRecording.stop();
+}
+
+void ExtendableRecording::pause()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::pause();
+	mPotentialRecording.pause();
+}
+
+void ExtendableRecording::resume()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::resume();
+	mPotentialRecording.resume();
+}
+
+void ExtendableRecording::restart()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::restart();
+	mAcceptedRecording.reset();
+	mPotentialRecording.restart();
+}
+
+void ExtendableRecording::reset()
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::reset();
+	mAcceptedRecording.reset();
+	mPotentialRecording.reset();
+}
+
+void ExtendableRecording::splitTo(ExtendableRecording& other)
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::splitTo(other);
+	mPotentialRecording.splitTo(other.mPotentialRecording);
+}
+
+void ExtendableRecording::splitFrom(ExtendableRecording& other)
+{
+	LLStopWatchControlsMixin<ExtendableRecording>::splitFrom(other);
+	mPotentialRecording.splitFrom(other.mPotentialRecording);
+}
+
+PeriodicRecording& get_frame_recording()
+{
+	static LLThreadLocalPointer<PeriodicRecording> sRecording(new PeriodicRecording(1000, PeriodicRecording::STARTED));
+	return *sRecording;
+}
+
+}
+
+void LLStopWatchControlsMixinCommon::start()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleReset();
+		handleStart();
+		break;
+	case PAUSED:
+		handleStart();
+		break;
+	case STARTED:
+		handleReset();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::stop()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		break;
+	case PAUSED:
+		handleStop();
+		break;
+	case STARTED:
+		handleStop();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STOPPED;
+}
+
+void LLStopWatchControlsMixinCommon::pause()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		break;
+	case PAUSED:
+		break;
+	case STARTED:
+		handleStop();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = PAUSED;
+}
+
+void LLStopWatchControlsMixinCommon::resume()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleStart();
+		break;
+	case PAUSED:
+		handleStart();
+		break;
+	case STARTED:
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::restart()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleReset();
+		handleStart();
+		break;
+	case PAUSED:
+		handleReset();
+		handleStart();
+		break;
+	case STARTED:
+		handleReset();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::reset()
+{
+	handleReset();
+}
+
+void LLStopWatchControlsMixinCommon::setPlayState( EPlayState state )
+{
+	switch(state)
+	{
+	case STOPPED:
+		stop();
+		break;
+	case PAUSED:
+		pause();
+		break;
+	case STARTED:
+		start();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+
+	mPlayState = state;
+}
diff --git a/indra/llcommon/lltracerecording.h b/indra/llcommon/lltracerecording.h
new file mode 100644
index 0000000000..3e7ed2b592
--- /dev/null
+++ b/indra/llcommon/lltracerecording.h
@@ -0,0 +1,424 @@
+/** 
+ * @file lltracerecording.h
+ * @brief Sampling object for collecting runtime statistics originating from lltrace.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACERECORDING_H
+#define LL_LLTRACERECORDING_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llpointer.h"
+#include "lltimer.h"
+#include "lltrace.h"
+
+class LLStopWatchControlsMixinCommon
+{
+public:
+	virtual ~LLStopWatchControlsMixinCommon() {}
+
+	enum EPlayState
+	{
+		STOPPED,
+		PAUSED,
+		STARTED
+	};
+
+	virtual void start();
+	virtual void stop();
+	virtual void pause();
+	virtual void resume();
+	virtual void restart();
+	virtual void reset();
+
+	bool isStarted() const { return mPlayState == STARTED; }
+	bool isPaused() const  { return mPlayState == PAUSED; }
+	bool isStopped() const { return mPlayState == STOPPED; }
+	EPlayState getPlayState() const { return mPlayState; }
+	// force play state to specific value by calling appropriate handle* methods
+	void setPlayState(EPlayState state);
+
+protected:
+	LLStopWatchControlsMixinCommon()
+	:	mPlayState(STOPPED)
+	{}
+
+private:
+	// trigger active behavior (without reset)
+	virtual void handleStart(){};
+	// stop active behavior
+	virtual void handleStop(){};
+	// clear accumulated state, can be called while started
+	virtual void handleReset(){};
+
+	EPlayState mPlayState;
+};
+
+template<typename DERIVED>
+class LLStopWatchControlsMixin
+:	public LLStopWatchControlsMixinCommon
+{
+public:
+	typedef LLStopWatchControlsMixin<DERIVED> self_t;
+	virtual void splitTo(DERIVED& other)
+	{
+		handleSplitTo(other);
+	}
+
+	virtual void splitFrom(DERIVED& other)
+	{
+		static_cast<self_t&>(other).handleSplitTo(*static_cast<DERIVED*>(this));
+	}
+private:
+	// atomically stop this object while starting the other
+	// no data can be missed in between stop and start
+	virtual void handleSplitTo(DERIVED& other) {};
+
+};
+
+namespace LLTrace
+{
+	class RecordingBuffers
+	{
+	public:
+		RecordingBuffers();
+
+		void handOffTo(RecordingBuffers& other);
+		void makePrimary();
+		bool isPrimary() const;
+
+		void makeUnique();
+
+		void appendBuffers(const RecordingBuffers& other);
+		void mergeBuffers(const RecordingBuffers& other);
+		void resetBuffers(RecordingBuffers* other = NULL);
+
+	protected:
+		LLCopyOnWritePointer<AccumulatorBuffer<CountAccumulator<F64> > >		mCountsFloat;
+		LLCopyOnWritePointer<AccumulatorBuffer<MeasurementAccumulator<F64> > >	mMeasurementsFloat;
+		LLCopyOnWritePointer<AccumulatorBuffer<CountAccumulator<S64> > >		mCounts;
+		LLCopyOnWritePointer<AccumulatorBuffer<MeasurementAccumulator<S64> > >	mMeasurements;
+		LLCopyOnWritePointer<AccumulatorBuffer<TimeBlockAccumulator> >			mStackTimers;
+		LLCopyOnWritePointer<AccumulatorBuffer<MemStatAccumulator> >			mMemStats;
+	};
+
+	class Recording : public LLStopWatchControlsMixin<Recording>, public RecordingBuffers
+	{
+	public:
+		Recording();
+
+		Recording(const Recording& other);
+		~Recording();
+
+		// accumulate data from subsequent, non-overlapping recording
+		void appendRecording(const Recording& other);
+
+		// gather data from recording, ignoring time relationship (for example, pulling data from slave threads)
+		void mergeRecording(const Recording& other);
+
+		// grab latest recorded data
+		void update();
+
+		// Timer accessors
+		LLUnit<LLUnits::Seconds, F64> getSum(const TraceType<TimeBlockAccumulator>& stat) const;
+		LLUnit<LLUnits::Seconds, F64> getSum(const TraceType<TimeBlockAccumulator::SelfTimeAspect>& stat) const;
+		U32 getSum(const TraceType<TimeBlockAccumulator::CallCountAspect>& stat) const;
+
+		LLUnit<LLUnits::Seconds, F64> getPerSec(const TraceType<TimeBlockAccumulator>& stat) const;
+		LLUnit<LLUnits::Seconds, F64> getPerSec(const TraceType<TimeBlockAccumulator::SelfTimeAspect>& stat) const;
+		F32 getPerSec(const TraceType<TimeBlockAccumulator::CallCountAspect>& stat) const;
+
+		// Memory accessors
+		LLUnit<LLUnits::Bytes, U32> getSum(const TraceType<MemStatAccumulator>& stat) const;
+		LLUnit<LLUnits::Bytes, F32> getPerSec(const TraceType<MemStatAccumulator>& stat) const;
+
+		// CountStatHandle accessors
+		F64 getSum(const TraceType<CountAccumulator<F64> >& stat) const;
+		S64 getSum(const TraceType<CountAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getSum(const CountStatHandle<T>& stat) const
+		{
+			return (T)getSum(static_cast<const TraceType<CountAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getPerSec(const TraceType<CountAccumulator<F64> >& stat) const;
+		F64 getPerSec(const TraceType<CountAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getPerSec(const CountStatHandle<T>& stat) const
+		{
+			return (T)getPerSec(static_cast<const TraceType<CountAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		U32 getSampleCount(const TraceType<CountAccumulator<F64> >& stat) const;
+		U32 getSampleCount(const TraceType<CountAccumulator<S64> >& stat) const;
+
+
+		// MeasurementStatHandle accessors
+		F64 getSum(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		S64 getSum(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getSum(const MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getSum(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getMin(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		S64 getMin(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getMin(const MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getMin(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getMax(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		S64 getMax(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getMax(const MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getMax(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getMean(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		F64 getMean(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getMean(MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getMean(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getStandardDeviation(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		F64 getStandardDeviation(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getStandardDeviation(const MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getMean(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		F64 getLastValue(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		S64 getLastValue(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+		template <typename T>
+		T getLastValue(const MeasurementStatHandle<T>& stat) const
+		{
+			return (T)getLastValue(static_cast<const TraceType<MeasurementAccumulator<typename LLUnits::HighestPrecisionType<T>::type_t> >&> (stat));
+		}
+
+		U32 getSampleCount(const TraceType<MeasurementAccumulator<F64> >& stat) const;
+		U32 getSampleCount(const TraceType<MeasurementAccumulator<S64> >& stat) const;
+
+		LLUnit<LLUnits::Seconds, F64> getDuration() const { return LLUnit<LLUnits::Seconds, F64>(mElapsedSeconds); }
+
+	private:
+		friend class ThreadRecorder;
+
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void handleStart();
+		/*virtual*/ void handleStop();
+		/*virtual*/ void handleReset();
+		/*virtual*/ void handleSplitTo(Recording& other);
+
+		// returns data for current thread
+		class ThreadRecorder* getThreadRecorder(); 
+
+		LLTimer			mSamplingTimer;
+		F64				mElapsedSeconds;
+	};
+
+	class LL_COMMON_API PeriodicRecording
+	:	public LLStopWatchControlsMixin<PeriodicRecording>
+	{
+	public:
+		PeriodicRecording(U32 num_periods, EPlayState state = STOPPED);
+
+		void nextPeriod();
+		U32 getNumPeriods() { return mRecordingPeriods.size(); }
+
+		Recording& getLastRecordingPeriod()
+		{
+			U32 num_periods = mRecordingPeriods.size();
+			return mRecordingPeriods[(mCurPeriod + num_periods - 1) % num_periods];
+		}
+
+		const Recording& getLastRecordingPeriod() const
+		{
+			return getPrevRecordingPeriod(1);
+		}
+
+		Recording& getCurRecordingPeriod()
+		{
+			return mRecordingPeriods[mCurPeriod];
+		}
+
+		const Recording& getCurRecordingPeriod() const
+		{
+			return mRecordingPeriods[mCurPeriod];
+		}
+
+		Recording& getPrevRecordingPeriod(U32 offset)
+		{
+			U32 num_periods = mRecordingPeriods.size();
+			offset = llclamp(offset, 0u, num_periods - 1);
+			return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+		}
+
+		const Recording& getPrevRecordingPeriod(U32 offset) const
+		{
+			U32 num_periods = mRecordingPeriods.size();
+			offset = llclamp(offset, 0u, num_periods - 1);
+			return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+		}
+
+		Recording snapshotCurRecordingPeriod() const
+		{
+			Recording recording_copy(getCurRecordingPeriod());
+			recording_copy.stop();
+			return recording_copy;
+		}
+
+		Recording& getTotalRecording();
+
+		template <typename T>
+		typename T::value_t getPeriodMin(const TraceType<T>& stat) const
+		{
+			typename T::value_t min_val = (std::numeric_limits<typename T::value_t>::max)();
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				min_val = llmin(min_val, mRecordingPeriods[i].getSum(stat));
+			}
+			return min_val;
+		}
+
+		template <typename T>
+		F64 getPeriodMinPerSec(const TraceType<T>& stat) const
+		{
+			F64 min_val = (std::numeric_limits<F64>::max)();
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				min_val = llmin(min_val, mRecordingPeriods[i].getPerSec(stat));
+			}
+			return min_val;
+		}
+
+		template <typename T>
+		typename T::value_t getPeriodMax(const TraceType<T>& stat) const
+		{
+			typename T::value_t max_val = (std::numeric_limits<typename T::value_t>::min)();
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				max_val = llmax(max_val, mRecordingPeriods[i].getSum(stat));
+			}
+			return max_val;
+		}
+
+		template <typename T>
+		F64 getPeriodMaxPerSec(const TraceType<T>& stat) const
+		{
+			F64 max_val = (std::numeric_limits<F64>::min)();
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				max_val = llmax(max_val, mRecordingPeriods[i].getPerSec(stat));
+			}
+			return max_val;
+		}
+
+		template <typename T>
+		typename MeanValueType<TraceType<T> >::type getPeriodMean(const TraceType<T>& stat) const
+		{
+			typename MeanValueType<TraceType<T> >::type mean = 0.0;
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				if (mRecordingPeriods[i].getDuration() > 0.f)
+				{
+					mean += mRecordingPeriods[i].getSum(stat);
+				}
+			}
+			mean /= num_periods;
+			return mean;
+		}
+
+		template <typename T>
+		typename MeanValueType<TraceType<T> >::type getPeriodMeanPerSec(const TraceType<T>& stat) const
+		{
+			typename MeanValueType<TraceType<T> >::type mean = 0.0;
+			U32 num_periods = mRecordingPeriods.size();
+			for (S32 i = 0; i < num_periods; i++)
+			{
+				if (mRecordingPeriods[i].getDuration() > 0.f)
+				{
+					mean += mRecordingPeriods[i].getPerSec(stat);
+				}
+			}
+			mean /= num_periods;
+			return mean;
+		}
+
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void start();
+		/*virtual*/ void stop();
+		/*virtual*/ void pause();
+		/*virtual*/ void resume();
+		/*virtual*/ void restart();
+		/*virtual*/ void reset();
+		/*virtual*/ void splitTo(PeriodicRecording& other);
+		/*virtual*/ void splitFrom(PeriodicRecording& other);
+
+	private:
+		std::vector<Recording>	mRecordingPeriods;
+		Recording	mTotalRecording;
+		bool		mTotalValid;
+		const bool	mAutoResize;
+		S32			mCurPeriod;
+	};
+
+	PeriodicRecording& get_frame_recording();
+
+	class ExtendableRecording
+	:	public LLStopWatchControlsMixin<ExtendableRecording>
+	{
+	public:
+		void extend();
+
+		Recording& getAcceptedRecording() { return mAcceptedRecording; }
+
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void start();
+		/*virtual*/ void stop();
+		/*virtual*/ void pause();
+		/*virtual*/ void resume();
+		/*virtual*/ void restart();
+		/*virtual*/ void reset();
+		/*virtual*/ void splitTo(ExtendableRecording& other);
+		/*virtual*/ void splitFrom(ExtendableRecording& other);
+	private:
+		Recording mAcceptedRecording;
+		Recording mPotentialRecording;
+	};
+}
+
+#endif // LL_LLTRACERECORDING_H
diff --git a/indra/llcommon/lltracethreadrecorder.cpp b/indra/llcommon/lltracethreadrecorder.cpp
new file mode 100644
index 0000000000..9bef040cf7
--- /dev/null
+++ b/indra/llcommon/lltracethreadrecorder.cpp
@@ -0,0 +1,286 @@
+/** 
+ * @file lltracethreadrecorder.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltracethreadrecorder.h"
+#include "llfasttimer.h"
+
+namespace LLTrace
+{
+
+
+///////////////////////////////////////////////////////////////////////
+// ThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+ThreadRecorder::ThreadRecorder()
+{
+	//NB: the ordering of initialization in this function is very fragile due to a large number of implicit dependencies
+	set_thread_recorder(this);
+	TimeBlock& root_time_block = TimeBlock::getRootTimeBlock();
+
+	ThreadTimerStack* timer_stack = ThreadTimerStack::getInstance();
+	timer_stack->mTimeBlock = &root_time_block;
+	timer_stack->mActiveTimer = NULL;
+
+	mNumTimeBlockTreeNodes = AccumulatorBuffer<TimeBlockAccumulator>::getDefaultBuffer()->size();
+	mTimeBlockTreeNodes = new TimeBlockTreeNode[mNumTimeBlockTreeNodes];
+
+	mThreadRecording.start();
+
+	// initialize time block parent pointers
+	for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(), end_it = LLInstanceTracker<TimeBlock>::endInstances(); 
+		it != end_it; 
+		++it)
+	{
+		TimeBlock& time_block = *it;
+		TimeBlockTreeNode& tree_node = mTimeBlockTreeNodes[it->getIndex()];
+		tree_node.mBlock = &time_block;
+		tree_node.mParent = &root_time_block;
+
+		it->getPrimaryAccumulator()->mParent = &root_time_block;
+	}
+
+	mRootTimer = new BlockTimer(root_time_block);
+	timer_stack->mActiveTimer = mRootTimer;
+
+	TimeBlock::getRootTimeBlock().getPrimaryAccumulator()->mActiveCount = 1;
+}
+
+ThreadRecorder::~ThreadRecorder()
+{
+	delete mRootTimer;
+
+	while(mActiveRecordings.size())
+	{
+		mActiveRecordings.front()->mTargetRecording->stop();
+	}
+	set_thread_recorder(NULL);
+	delete[] mTimeBlockTreeNodes;
+}
+
+TimeBlockTreeNode* ThreadRecorder::getTimeBlockTreeNode(S32 index)
+{
+	if (0 <= index && index < mNumTimeBlockTreeNodes)
+	{
+		return &mTimeBlockTreeNodes[index];
+	}
+	return NULL;
+}
+
+
+void ThreadRecorder::activate( Recording* recording )
+{
+	ActiveRecording* active_recording = new ActiveRecording(recording);
+	if (!mActiveRecordings.empty())
+	{
+		mActiveRecordings.front()->mPartialRecording.handOffTo(active_recording->mPartialRecording);
+	}
+	mActiveRecordings.push_front(active_recording);
+
+	mActiveRecordings.front()->mPartialRecording.makePrimary();
+}
+
+ThreadRecorder::active_recording_list_t::iterator ThreadRecorder::update( Recording* recording )
+{
+	active_recording_list_t::iterator it, end_it;
+	for (it = mActiveRecordings.begin(), end_it = mActiveRecordings.end();
+		it != end_it;
+		++it)
+	{
+		active_recording_list_t::iterator next_it = it;
+		++next_it;
+
+		// if we have another recording further down in the stack...
+		if (next_it != mActiveRecordings.end())
+		{
+			// ...push our gathered data down to it
+			(*next_it)->mPartialRecording.appendBuffers((*it)->mPartialRecording);
+		}
+
+		// copy accumulated measurements into result buffer and clear accumulator (mPartialRecording)
+		(*it)->moveBaselineToTarget();
+
+		if ((*it)->mTargetRecording == recording)
+		{
+			// found the recording, so return it
+			break;
+		}
+	}
+
+	if (it == end_it)
+	{
+		llwarns << "Recording not active on this thread" << llendl;
+	}
+
+	return it;
+}
+
+AccumulatorBuffer<CountAccumulator<F64> > 		gCountsFloat;
+AccumulatorBuffer<MeasurementAccumulator<F64> >	gMeasurementsFloat;
+AccumulatorBuffer<CountAccumulator<S64> >		gCounts;
+AccumulatorBuffer<MeasurementAccumulator<S64> >	gMeasurements;
+AccumulatorBuffer<TimeBlockAccumulator>			gStackTimers;
+AccumulatorBuffer<MemStatAccumulator>			gMemStats;
+
+void ThreadRecorder::deactivate( Recording* recording )
+{
+	active_recording_list_t::iterator it = update(recording);
+	if (it != mActiveRecordings.end())
+	{
+		// and if we've found the recording we wanted to update
+		active_recording_list_t::iterator next_it = it;
+		++next_it;
+		if (next_it != mActiveRecordings.end())
+		{
+			(*next_it)->mTargetRecording->makePrimary();
+		}
+
+		delete *it;
+		mActiveRecordings.erase(it);
+	}
+}
+
+ThreadRecorder::ActiveRecording::ActiveRecording( Recording* target ) 
+:	mTargetRecording(target)
+{
+}
+
+void ThreadRecorder::ActiveRecording::moveBaselineToTarget()
+{
+	mTargetRecording->appendBuffers(mPartialRecording);
+	mPartialRecording.resetBuffers();
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// SlaveThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+SlaveThreadRecorder::SlaveThreadRecorder()
+{
+	getMasterThreadRecorder().addSlaveThread(this);
+}
+
+SlaveThreadRecorder::~SlaveThreadRecorder()
+{
+	getMasterThreadRecorder().removeSlaveThread(this);
+}
+
+void SlaveThreadRecorder::pushToMaster()
+{
+	mThreadRecording.stop();
+	{
+		LLMutexLock(getMasterThreadRecorder().getSlaveListMutex());
+		mSharedData.appendFrom(mThreadRecording);
+	}
+	mThreadRecording.start();
+}
+
+void SlaveThreadRecorder::SharedData::appendFrom( const Recording& source )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	mRecording.appendRecording(source);
+}
+
+void SlaveThreadRecorder::SharedData::appendTo( Recording& sink )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	sink.appendRecording(mRecording);
+}
+
+void SlaveThreadRecorder::SharedData::mergeFrom( const RecordingBuffers& source )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	mRecording.mergeBuffers(source);
+}
+
+void SlaveThreadRecorder::SharedData::mergeTo( RecordingBuffers& sink )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	sink.mergeBuffers(mRecording);
+}
+
+void SlaveThreadRecorder::SharedData::reset()
+{
+	LLMutexLock lock(&mRecordingMutex);
+	mRecording.reset();
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// MasterThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+LLFastTimer::DeclareTimer FTM_PULL_TRACE_DATA_FROM_SLAVES("Pull slave trace data");
+void MasterThreadRecorder::pullFromSlaveThreads()
+{
+	LLFastTimer _(FTM_PULL_TRACE_DATA_FROM_SLAVES);
+	if (mActiveRecordings.empty()) return;
+
+	LLMutexLock lock(&mSlaveListMutex);
+
+	RecordingBuffers& target_recording_buffers = mActiveRecordings.front()->mPartialRecording;
+	for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
+		it != end_it;
+		++it)
+	{
+		// ignore block timing info for now
+		(*it)->mSharedData.mergeTo(target_recording_buffers);
+		(*it)->mSharedData.reset();
+	}
+}
+
+void MasterThreadRecorder::addSlaveThread( class SlaveThreadRecorder* child )
+{
+	LLMutexLock lock(&mSlaveListMutex);
+
+	mSlaveThreadRecorders.push_back(child);
+}
+
+void MasterThreadRecorder::removeSlaveThread( class SlaveThreadRecorder* child )
+{
+	LLMutexLock lock(&mSlaveListMutex);
+
+	for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
+		it != end_it;
+		++it)
+	{
+		if ((*it) == child)
+		{
+			mSlaveThreadRecorders.erase(it);
+			break;
+		}
+	}
+}
+
+void MasterThreadRecorder::pushToMaster()
+{}
+
+MasterThreadRecorder::MasterThreadRecorder()
+{}
+
+}
diff --git a/indra/llcommon/lltracethreadrecorder.h b/indra/llcommon/lltracethreadrecorder.h
new file mode 100644
index 0000000000..3e24303d92
--- /dev/null
+++ b/indra/llcommon/lltracethreadrecorder.h
@@ -0,0 +1,125 @@
+/** 
+ * @file lltrace.h
+ * @brief Runtime statistics accumulation.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACETHREADRECORDER_H
+#define LL_LLTRACETHREADRECORDER_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llmutex.h"
+#include "lltracerecording.h"
+
+namespace LLTrace
+{
+	class LL_COMMON_API ThreadRecorder
+	{
+	protected:
+		struct ActiveRecording;
+		typedef std::list<ActiveRecording*> active_recording_list_t;
+	public:
+		ThreadRecorder();
+
+		virtual ~ThreadRecorder();
+
+		void activate(Recording* recording);
+		active_recording_list_t::iterator update(Recording* recording);
+		void deactivate(Recording* recording);
+
+		virtual void pushToMaster() = 0;
+
+		TimeBlockTreeNode* getTimeBlockTreeNode(S32 index);
+
+	protected:
+		struct ActiveRecording
+		{
+			ActiveRecording(Recording* target);
+
+			Recording*	mTargetRecording;
+			RecordingBuffers	mPartialRecording;
+
+			void moveBaselineToTarget();
+		};
+		Recording					mThreadRecording;
+
+		active_recording_list_t		mActiveRecordings;
+
+		class BlockTimer*			mRootTimer;
+		TimeBlockTreeNode*			mTimeBlockTreeNodes;
+		size_t						mNumTimeBlockTreeNodes;
+	};
+
+	class LL_COMMON_API MasterThreadRecorder : public ThreadRecorder
+	{
+	public:
+		MasterThreadRecorder();
+
+		void addSlaveThread(class SlaveThreadRecorder* child);
+		void removeSlaveThread(class SlaveThreadRecorder* child);
+
+		/*virtual */ void pushToMaster();
+
+		// call this periodically to gather stats data from slave threads
+		void pullFromSlaveThreads();
+
+		LLMutex* getSlaveListMutex() { return &mSlaveListMutex; }
+
+	private:
+
+		typedef std::list<class SlaveThreadRecorder*> slave_thread_recorder_list_t;
+
+		slave_thread_recorder_list_t	mSlaveThreadRecorders;
+		LLMutex							mSlaveListMutex;
+	};
+
+	class LL_COMMON_API SlaveThreadRecorder : public ThreadRecorder
+	{
+	public:
+		SlaveThreadRecorder();
+		~SlaveThreadRecorder();
+
+		// call this periodically to gather stats data for master thread to consume
+		/*virtual*/ void pushToMaster();
+
+		MasterThreadRecorder* 	mMaster;
+
+		class SharedData
+		{
+		public:
+			void appendFrom(const Recording& source);
+			void appendTo(Recording& sink);
+			void mergeFrom(const RecordingBuffers& source);
+			void mergeTo(RecordingBuffers& sink);
+			void reset();
+		private:
+			LLMutex		mRecordingMutex;
+			Recording	mRecording;
+		};
+		SharedData		mSharedData;
+	};
+}
+
+#endif // LL_LLTRACETHREADRECORDER_H
diff --git a/indra/llcommon/llunit.h b/indra/llcommon/llunit.h
new file mode 100644
index 0000000000..f86f111b90
--- /dev/null
+++ b/indra/llcommon/llunit.h
@@ -0,0 +1,476 @@
+/** 
+ * @file llunit.h
+ * @brief Unit conversion classes
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLUNIT_H
+#define LL_LLUNIT_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+#include "llerrorlegacy.h"
+
+namespace LLUnits
+{
+
+template<typename T>
+struct HighestPrecisionType
+{
+	typedef T type_t;
+};
+
+template<> struct HighestPrecisionType<F32> { typedef F64 type_t; };
+template<> struct HighestPrecisionType<S32> { typedef S64 type_t; };
+template<> struct HighestPrecisionType<U32> { typedef S64 type_t; };
+template<> struct HighestPrecisionType<S16> { typedef S64 type_t; };
+template<> struct HighestPrecisionType<U16> { typedef S64 type_t; };
+template<> struct HighestPrecisionType<S8> { typedef S64 type_t; };
+template<> struct HighestPrecisionType<U8> { typedef S64 type_t; };
+
+template<typename DERIVED_UNITS_TAG, typename BASE_UNITS_TAG, typename VALUE_TYPE>
+struct ConversionFactor
+{
+	static typename HighestPrecisionType<VALUE_TYPE>::type_t get()
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(DERIVED_UNITS_TAG, false,  "Cannot convert between types.");
+	}
+};
+
+template<typename BASE_UNITS_TAG, typename VALUE_TYPE>
+struct ConversionFactor<BASE_UNITS_TAG, BASE_UNITS_TAG, VALUE_TYPE>
+{
+	static typename HighestPrecisionType<VALUE_TYPE>::type_t get() 
+	{ 
+		return 1; 
+	}
+};
+
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE>
+struct LLUnit
+{
+	typedef LLUnit<UNIT_TYPE, STORAGE_TYPE> self_t;
+	typedef STORAGE_TYPE storage_t;
+
+	// value initialization
+	LLUnit(storage_t value = storage_t())
+	:	mValue(value)
+	{}
+
+	// unit initialization and conversion
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	LLUnit(LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	:	mValue(convert(other))
+	{}
+	
+	// value assignment
+	self_t& operator = (storage_t value)
+	{
+		mValue = value;
+		return *this;
+	}
+
+	// unit assignment
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	self_t& operator = (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue = convert(other);
+		return *this;
+	}
+
+	storage_t value() const
+	{
+		return mValue;
+	}
+
+	template<typename NEW_UNIT_TYPE> LLUnit<NEW_UNIT_TYPE, STORAGE_TYPE> as()
+	{
+		return LLUnit<NEW_UNIT_TYPE, STORAGE_TYPE>(*this);
+	}
+
+
+	void operator += (storage_t value)
+	{
+		mValue += value;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator += (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue += convert(other);
+	}
+
+	void operator -= (storage_t value)
+	{
+		mValue -= value;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator -= (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue -= convert(other);
+	}
+
+	void operator *= (storage_t multiplicand)
+	{
+		mValue *= multiplicand;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator *= (LLUnit<OTHER_UNIT, OTHER_STORAGE> multiplicand)
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(OTHER_UNIT, false, "Multiplication of unit types not supported.");
+	}
+
+	void operator /= (storage_t divisor)
+	{
+		mValue /= divisor;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator /= (LLUnit<OTHER_UNIT, OTHER_STORAGE> divisor)
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(OTHER_UNIT, false, "Illegal in-place division of unit types.");
+	}
+
+	template<typename SOURCE_UNITS, typename SOURCE_STORAGE>
+	static storage_t convert(LLUnit<SOURCE_UNITS, SOURCE_STORAGE> v) 
+	{ 
+		return (storage_t)(v.value() 
+			* LLUnits::ConversionFactor<SOURCE_UNITS, typename UNIT_TYPE::base_unit_t, SOURCE_STORAGE>::get() 
+			* LLUnits::ConversionFactor<typename UNIT_TYPE::base_unit_t, UNIT_TYPE, STORAGE_TYPE>::get()); 
+	}
+
+protected:
+	storage_t mValue;
+};
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE>
+struct LLUnitImplicit : public LLUnit<UNIT_TYPE, STORAGE_TYPE>
+{
+	typedef LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> self_t;
+	typedef typename LLUnit<UNIT_TYPE, STORAGE_TYPE>::storage_t storage_t;
+	typedef LLUnit<UNIT_TYPE, STORAGE_TYPE> base_t;
+
+	LLUnitImplicit(storage_t value = storage_t())
+	:	base_t(value)
+	{}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	LLUnitImplicit(LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	:	base_t(convert(other))
+	{}
+
+	// unlike LLUnit, LLUnitImplicit is *implicitly* convertable to a POD scalar (F32, S32, etc)
+	// this allows for interoperability with legacy code
+	operator storage_t() const
+	{
+		return base_t::value();
+	}
+};
+
+//
+// operator +
+//
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator + (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator + (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator + (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+//
+// operator -
+//
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator - (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator - (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator - (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator - (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator - (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator - (SCALAR_TYPE first, LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+//
+// operator *
+//
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator * (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first * second.value()));
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator * (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() * second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator * (LLUnit<UNIT_TYPE1, STORAGE_TYPE1>, LLUnit<UNIT_TYPE2, STORAGE_TYPE2>)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	llstatic_assert_template(STORAGE_TYPE1, false, "Multiplication of unit types results in new unit type - not supported.");
+	return LLUnit<UNIT_TYPE1, STORAGE_TYPE1>();
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator * (SCALAR_TYPE first, LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>(first * second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator * (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>(first.value() * second);
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator * (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1>, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2>)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	llstatic_assert_template(STORAGE_TYPE1, false, "Multiplication of unit types results in new unit type - not supported.");
+	return LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1>();
+}
+
+//
+// operator /
+//
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+SCALAR_TYPE operator / (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return SCALAR_TYPE(first / second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator / (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() / second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+STORAGE_TYPE1 operator / (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	return STORAGE_TYPE1(first.value() / second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator / (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() / second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+STORAGE_TYPE1 operator / (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	return STORAGE_TYPE1(first.value() / second.value());
+}
+
+#define COMPARISON_OPERATORS(op)                                                                                     \
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>                                            \
+bool operator op (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)                                         \
+{                                                                                                                    \
+	return first op second.value();                                                                                  \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>                                            \
+bool operator op (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)                                         \
+{                                                                                                                    \
+	return first.value() op second;                                                                                  \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>                   \
+bool operator op (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second) \
+{                                                                                                                    \
+	return first.value() op first.convert(second);                                                                   \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>                   \
+	bool operator op (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)             \
+{                                                                                                                    \
+	return first.value() op first.convert(second);                                                                   \
+}
+
+COMPARISON_OPERATORS(<)
+COMPARISON_OPERATORS(<=)
+COMPARISON_OPERATORS(>)
+COMPARISON_OPERATORS(>=)
+COMPARISON_OPERATORS(==)
+COMPARISON_OPERATORS(!=)
+
+namespace LLUnits
+{
+template<typename T>
+T rawValue(T val) { return val; }
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE> 
+STORAGE_TYPE rawValue(LLUnit<UNIT_TYPE, STORAGE_TYPE> val) { return val.value(); }
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE> 
+STORAGE_TYPE rawValue(LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> val) { return val.value(); }
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE> 
+struct HighestPrecisionType<LLUnit<UNIT_TYPE, STORAGE_TYPE> >
+{
+	typedef typename HighestPrecisionType<STORAGE_TYPE>::type_t type_t;
+};
+
+#define LL_DECLARE_DERIVED_UNIT(conversion_factor, base_unit_name, unit_name)                   \
+struct unit_name                                                                                \
+{                                                                                               \
+	typedef base_unit_name base_unit_t;                                                         \
+};                                                                                              \
+template<typename STORAGE_TYPE>                                                                 \
+struct ConversionFactor<unit_name, base_unit_name, STORAGE_TYPE>                                \
+{                                                                                               \
+	static typename HighestPrecisionType<STORAGE_TYPE>::type_t get()                            \
+	{                                                                                           \
+		return typename HighestPrecisionType<STORAGE_TYPE>::type_t(conversion_factor);          \
+	}                                                                                           \
+};                                                                                              \
+	                                                                                            \
+template<typename STORAGE_TYPE>                                                                 \
+struct ConversionFactor<base_unit_name, unit_name, STORAGE_TYPE>						        \
+{                                                                                               \
+	static typename HighestPrecisionType<STORAGE_TYPE>::type_t get()                            \
+	{                                                                                           \
+		return typename HighestPrecisionType<STORAGE_TYPE>::type_t(1.0 / (conversion_factor));  \
+	}                                                                                           \
+}
+
+struct Bytes { typedef Bytes base_unit_t; };
+LL_DECLARE_DERIVED_UNIT(1024, Bytes, Kilobytes);
+LL_DECLARE_DERIVED_UNIT(1024 * 1024, Bytes, Megabytes);
+LL_DECLARE_DERIVED_UNIT(1024 * 1024 * 1024, Bytes, Gigabytes);
+LL_DECLARE_DERIVED_UNIT(1.0 / 8.0, Bytes, Bits);
+LL_DECLARE_DERIVED_UNIT(1024 / 8, Bytes, Kilobits);
+LL_DECLARE_DERIVED_UNIT(1024 / 8, Bytes, Megabits);
+LL_DECLARE_DERIVED_UNIT(1024 * 1024 * 1024 / 8, Bytes, Gigabits);
+
+struct Seconds { typedef Seconds base_unit_t; };
+LL_DECLARE_DERIVED_UNIT(60, Seconds, Minutes);
+LL_DECLARE_DERIVED_UNIT(60 * 60, Seconds, Hours);
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000.0, Seconds, Milliseconds);
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000000.0, Seconds, Microseconds);
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000000000.0, Seconds, Nanoseconds);
+
+struct Meters { typedef Meters base_unit_t; };
+LL_DECLARE_DERIVED_UNIT(1000, Meters, Kilometers);
+LL_DECLARE_DERIVED_UNIT(1.0 / 100.0, Meters, Centimeters);
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000.0, Meters, Millimeters);
+
+struct Hertz { typedef Hertz base_unit_t; };
+LL_DECLARE_DERIVED_UNIT(1000, Hertz, Kilohertz);
+LL_DECLARE_DERIVED_UNIT(1000 * 1000, Hertz, Megahertz);
+LL_DECLARE_DERIVED_UNIT(1000 * 1000 * 1000, Hertz, Gigahertz);
+} // namespace LLUnits
+
+#endif // LL_LLUNIT_H
diff --git a/indra/llcommon/lluuid.cpp b/indra/llcommon/lluuid.cpp
index 0aaa50d231..ba4b670b9a 100644
--- a/indra/llcommon/lluuid.cpp
+++ b/indra/llcommon/lluuid.cpp
@@ -27,9 +27,7 @@
 
 // We can't use WIN32_LEAN_AND_MEAN here, needs lots of includes.
 #if LL_WINDOWS
-#undef WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headers.h"
 // ugh, this is ugly.  We need to straighten out our linking for this library
 #pragma comment(lib, "IPHLPAPI.lib")
 #include <iphlpapi.h>
diff --git a/indra/llcommon/llwin32headers.h b/indra/llcommon/llwin32headers.h
new file mode 100644
index 0000000000..8534ed6298
--- /dev/null
+++ b/indra/llcommon/llwin32headers.h
@@ -0,0 +1,40 @@
+/** 
+ * @file llwindows.h
+ * @brief sanitized include of windows header files
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLWINDOWS_H
+#define LL_LLWINDOWS_H
+
+#ifdef LL_WINDOWS
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#undef WIN32_LEAN_AND_MEAN
+#include <winsock2.h>
+#include <windows.h>
+#undef NOMINMAX
+#endif
+
+#endif
diff --git a/indra/llcommon/llwin32headerslean.h b/indra/llcommon/llwin32headerslean.h
new file mode 100644
index 0000000000..f7e71301a8
--- /dev/null
+++ b/indra/llcommon/llwin32headerslean.h
@@ -0,0 +1,40 @@
+/** 
+ * @file llwindows.h
+ * @brief sanitized include of windows header files
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLWINDOWS_H
+#define LL_LLWINDOWS_H
+
+#ifdef LL_WINDOWS
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#define WIN32_LEAN_AND_MEAN
+#include <winsock2.h>
+#include <windows.h>
+#undef NOMINMAX
+#endif
+
+#endif
diff --git a/indra/llcommon/llworkerthread.h b/indra/llcommon/llworkerthread.h
index be46394d6e..09776816a8 100644
--- a/indra/llcommon/llworkerthread.h
+++ b/indra/llcommon/llworkerthread.h
@@ -26,10 +26,11 @@
 #ifndef LL_LLWORKERTHREAD_H
 #define LL_LLWORKERTHREAD_H
 
-#include <queue>
-#include <string>
+#include <list>
 #include <map>
+#include <queue>
 #include <set>
+#include <string>
 
 #include "llqueuedthread.h"
 #include "llapr.h"
diff --git a/indra/llcommon/tests/llunits_test.cpp b/indra/llcommon/tests/llunits_test.cpp
new file mode 100644
index 0000000000..2a941e8229
--- /dev/null
+++ b/indra/llcommon/tests/llunits_test.cpp
@@ -0,0 +1,208 @@
+/** 
+ * @file llsingleton_test.cpp
+ * @date 2011-08-11
+ * @brief Unit test for the LLSingleton class
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llunit.h"
+#include "../test/lltut.h"
+
+namespace LLUnits
+{
+	// using powers of 2 to allow strict floating point equality
+	struct Quatloos { typedef Quatloos base_unit_t; };
+	LL_DECLARE_DERIVED_UNIT(4, Quatloos, Latinum);
+	LL_DECLARE_DERIVED_UNIT((1.0 / 4.0), Quatloos, Solari);
+}
+
+namespace tut
+{
+	using namespace LLUnits;
+	struct units
+	{
+	};
+
+	typedef test_group<units> units_t;
+	typedef units_t::object units_object_t;
+	tut::units_t tut_singleton("LLUnit");
+
+	// storage type conversions
+	template<> template<>
+	void units_object_t::test<1>()
+	{
+		LLUnit<Quatloos, F32> float_quatloos;
+		ensure(float_quatloos.value() == 0.f);
+
+		LLUnit<Quatloos, S32> int_quatloos;
+		ensure(int_quatloos.value() == 0);
+
+		int_quatloos = 42;
+		ensure(int_quatloos.value() == 42);
+		float_quatloos = int_quatloos;
+		ensure(float_quatloos.value() == 42.f);
+
+		int_quatloos = float_quatloos;
+		ensure(int_quatloos.value() == 42);
+
+		float_quatloos = 42.1f;
+		ensure(float_quatloos.value() == 42.1f);
+		int_quatloos = float_quatloos;
+		ensure(int_quatloos.value() == 42);
+		LLUnit<Quatloos, U32> unsigned_int_quatloos(float_quatloos);
+		ensure(unsigned_int_quatloos.value() == 42);
+	}
+
+	// conversions to/from base unit
+	template<> template<>
+	void units_object_t::test<2>()
+	{
+		LLUnit<Quatloos, F32> quatloos(1.f);
+		ensure(quatloos.value() == 1.f);
+		LLUnit<Latinum, F32> latinum_bars(quatloos);
+		ensure(latinum_bars.value() == 1.f / 4.f);
+
+		latinum_bars = 256;
+		quatloos = latinum_bars;
+		ensure(quatloos.value() == 1024);
+
+		LLUnit<Solari, F32> solari(quatloos);
+		ensure(solari.value() == 4096);
+	}
+
+	// conversions across non-base units
+	template<> template<>
+	void units_object_t::test<3>()
+	{
+		LLUnit<Solari, F32> solari = 4.f;
+		LLUnit<Latinum, F32> latinum_bars = solari;
+		ensure(latinum_bars.value() == 0.25f);
+	}
+
+	// math operations
+	template<> template<>
+	void units_object_t::test<4>()
+	{
+		LLUnit<Quatloos, F32> quatloos = 1.f;
+		quatloos *= 4.f;
+		ensure(quatloos.value() == 4);
+		quatloos = quatloos * 2;
+		ensure(quatloos.value() == 8);
+		quatloos = 2.f * quatloos;
+		ensure(quatloos.value() == 16);
+
+		quatloos += 4.f;
+		ensure(quatloos.value() == 20);
+		quatloos += 4;
+		ensure(quatloos.value() == 24);
+		quatloos = quatloos + 4;
+		ensure(quatloos.value() == 28);
+		quatloos = 4 + quatloos;
+		ensure(quatloos.value() == 32);
+		quatloos += quatloos * 3;
+		ensure(quatloos.value() == 128);
+
+		quatloos -= quatloos / 4 * 3;
+		ensure(quatloos.value() == 32);
+		quatloos = quatloos - 8;
+		ensure(quatloos.value() == 24);
+		quatloos -= 4;
+		ensure(quatloos.value() == 20);
+		quatloos -= 4.f;
+		ensure(quatloos.value() == 16);
+
+		quatloos *= 2.f;
+		ensure(quatloos.value() == 32);
+		quatloos = quatloos * 2.f;
+		ensure(quatloos.value() == 64);
+		quatloos = 0.5f * quatloos;
+		ensure(quatloos.value() == 32);
+
+		quatloos /= 2.f;
+		ensure(quatloos.value() == 16);
+		quatloos = quatloos / 4;
+		ensure(quatloos.value() == 4);
+
+		F32 ratio = quatloos / LLUnit<Quatloos, F32>(4.f);
+		ensure(ratio == 1);
+
+		quatloos += LLUnit<Solari, F32>(4.f);
+		ensure(quatloos.value() == 5);
+		quatloos -= LLUnit<Latinum, F32>(1.f);
+		ensure(quatloos.value() == 1);
+	}
+
+	// implicit units
+	template<> template<>
+	void units_object_t::test<5>()
+	{
+		// 0-initialized
+		LLUnit<Quatloos, F32> quatloos(0);
+		// initialize implicit unit from explicit
+		LLUnitImplicit<Quatloos, F32> quatloos_implicit = quatloos + 1;
+		ensure(quatloos_implicit.value() == 1);
+
+		// assign implicit to explicit, or perform math operations
+		quatloos = quatloos_implicit;
+		ensure(quatloos.value() == 1);
+		quatloos += quatloos_implicit;
+		ensure(quatloos.value() == 2);
+
+		// math operations on implicits
+		quatloos_implicit = 1;
+		ensure(quatloos_implicit == 1);
+
+		quatloos_implicit += 2;
+		ensure(quatloos_implicit == 3);
+
+		quatloos_implicit *= 2;
+		ensure(quatloos_implicit == 6);
+
+		quatloos_implicit -= 1;
+		ensure(quatloos_implicit == 5);
+
+		quatloos_implicit /= 5;
+		ensure(quatloos_implicit == 1);
+
+		quatloos_implicit = quatloos_implicit + 3 + quatloos_implicit;
+		ensure(quatloos_implicit == 5);
+
+		quatloos_implicit = 10 - quatloos_implicit - 1;
+		ensure(quatloos_implicit == 4);
+
+		quatloos_implicit = 2 * quatloos_implicit * 2;
+		ensure(quatloos_implicit == 16);
+
+		F32 one_half = quatloos_implicit / (quatloos_implicit * 2);
+		ensure(one_half == 0.5f);
+
+		// implicit conversion to POD
+		F32 float_val = quatloos_implicit;
+		ensure(float_val == 16);
+
+		S32 int_val = quatloos_implicit;
+		ensure(int_val == 16);
+	}
+}
diff --git a/indra/llcorehttp/_refcounted.h b/indra/llcorehttp/_refcounted.h
index 21a916b13b..402e725152 100644
--- a/indra/llcorehttp/_refcounted.h
+++ b/indra/llcorehttp/_refcounted.h
@@ -72,7 +72,7 @@ private:
 
 inline void RefCounted::addRef() const
 {
-	S32 count(mRefCount++);
+	S32 count(++mRefCount);
 	llassert_always(count >= 0);
 }
 
@@ -82,7 +82,7 @@ inline void RefCounted::release() const
 	S32 count(mRefCount);
 	llassert_always(count != NOT_REF_COUNTED);
 	llassert_always(count > 0);
-	count = mRefCount--;
+	count = --mRefCount;
 
 	// clean ourselves up if that was the last reference
 	if (0 == count)
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp
index a88ac148ef..e7e274ff03 100644
--- a/indra/llimage/llimage.cpp
+++ b/indra/llimage/llimage.cpp
@@ -50,6 +50,7 @@ LLMutex* LLImage::sMutex = NULL;
 bool LLImage::sUseNewByteRange = false;
 S32  LLImage::sMinimalReverseByteRangePercent = 75;
 LLPrivateMemoryPool* LLImageBase::sPrivatePoolp = NULL ;
+LLTrace::MemStatHandle	LLImageBase::sMemStat("LLImage");
 
 //static
 void LLImage::initClass(bool use_new_byte_range, S32 minimal_reverse_byte_range_percent)
@@ -158,6 +159,7 @@ void LLImageBase::sanityCheck()
 void LLImageBase::deleteData()
 {
 	FREE_MEM(sPrivatePoolp, mData) ;
+	memDisclaim(mDataSize);
 	mData = NULL;
 	mDataSize = 0;
 }
@@ -201,6 +203,7 @@ U8* LLImageBase::allocateData(S32 size)
 			mBadBufferAllocation = true ;
 		}
 		mDataSize = size;
+		memClaim(mDataSize);
 	}
 
 	return mData;
@@ -222,7 +225,9 @@ U8* LLImageBase::reallocateData(S32 size)
 		FREE_MEM(sPrivatePoolp, mData) ;
 	}
 	mData = new_datap;
+	memDisclaim(mDataSize);
 	mDataSize = size;
+	memClaim(mDataSize);
 	return mData;
 }
 
@@ -288,7 +293,6 @@ LLImageRaw::LLImageRaw(U16 width, U16 height, S8 components)
 LLImageRaw::LLImageRaw(U8 *data, U16 width, U16 height, S8 components, bool no_copy)
 	: LLImageBase()
 {
-
 	if(no_copy)
 	{
 		setDataAndSize(data, width, height, components);
@@ -1585,7 +1589,9 @@ static void avg4_colors2(const U8* a, const U8* b, const U8* c, const U8* d, U8*
 void LLImageBase::setDataAndSize(U8 *data, S32 size)
 { 
 	ll_assert_aligned(data, 16);
+	memDisclaim(mDataSize);
 	mData = data; mDataSize = size; 
+	memClaim(mDataSize);
 }	
 
 //static
diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h
index 6cb1226da0..5487bc6370 100644
--- a/indra/llimage/llimage.h
+++ b/indra/llimage/llimage.h
@@ -30,6 +30,7 @@
 #include "lluuid.h"
 #include "llstring.h"
 #include "llthread.h"
+#include "lltrace.h"
 
 const S32 MIN_IMAGE_MIP =  2; // 4x4, only used for expand/contract power of 2
 const S32 MAX_IMAGE_MIP = 11; // 2048x2048
@@ -110,7 +111,9 @@ protected:
 //============================================================================
 // Image base class
 
-class LLImageBase : public LLThreadSafeRefCount
+class LLImageBase 
+:	public LLThreadSafeRefCount,
+	public LLTrace::MemTrackable<LLImageBase>
 {
 protected:
 	virtual ~LLImageBase();
@@ -162,6 +165,8 @@ public:
 	static void destroyPrivatePool() ;
 	static LLPrivateMemoryPool* getPrivatePool() {return sPrivatePoolp;}
 
+	static LLTrace::MemStatHandle sMemStat;
+
 private:
 	U8 *mData;
 	S32 mDataSize;
@@ -208,7 +213,7 @@ public:
 	void contractToPowerOfTwo(S32 max_dim = MAX_IMAGE_SIZE, BOOL scale_image = TRUE);
 	void biasedScaleToPowerOfTwo(S32 max_dim = MAX_IMAGE_SIZE);
 	BOOL scale( S32 new_width, S32 new_height, BOOL scale_image = TRUE );
-	
+
 	// Fill the buffer with a constant color
 	void fill( const LLColor4U& color );
 
diff --git a/indra/llimage/tests/llimageworker_test.cpp b/indra/llimage/tests/llimageworker_test.cpp
index e255d65b43..b6f2694742 100644
--- a/indra/llimage/tests/llimageworker_test.cpp
+++ b/indra/llimage/tests/llimageworker_test.cpp
@@ -31,6 +31,8 @@
 #include "../llimageworker.h"
 // For timer class
 #include "../llcommon/lltimer.h"
+// for lltrace class
+#include "../llcommon/lltrace.h"
 // Tut header
 #include "../test/lltut.h"
 
@@ -42,6 +44,9 @@
 // * Do not make any assumption as to how those classes or methods work (i.e. don't copy/paste code)
 // * A simulator for a class can be implemented here. Please comment and document thoroughly.
 
+LLTrace::MemStatHandle	LLImageBase::sMemStat("LLImage");
+
+
 LLImageBase::LLImageBase() 
 : mData(NULL),
 mDataSize(0),
@@ -114,11 +119,13 @@ namespace tut
 		// Constructor and destructor of the test wrapper
 		imagedecodethread_test()
 		{
+			LLTrace::init();
 			mThread = NULL;
 		}
 		~imagedecodethread_test()
 		{
 			delete mThread;
+			LLTrace::cleanup();
 		}
 	};
 
@@ -136,6 +143,8 @@ namespace tut
 		imagerequest_test()
 		{
 			done = false;
+			LLTrace::init();
+
 			mRequest = new LLImageDecodeThread::ImageRequest(0, 0,
 											 LLQueuedThread::PRIORITY_NORMAL, 0, FALSE,
 											 new responder_test(&done));
@@ -145,6 +154,7 @@ namespace tut
 			// We should delete the object *but*, because its destructor is protected, that cannot be
 			// done from outside an LLImageDecodeThread instance... So we leak memory here... It's fine...
 			//delete mRequest;
+			LLTrace::cleanup();
 		}
 	};
 
diff --git a/indra/llinventory/lleconomy.h b/indra/llinventory/lleconomy.h
index eb2ecf71ba..47fcf688a2 100644
--- a/indra/llinventory/lleconomy.h
+++ b/indra/llinventory/lleconomy.h
@@ -27,6 +27,7 @@
 #define LL_LLECONOMY_H
 
 #include "llsingleton.h"
+#include <list>
 
 class LLMessageSystem;
 class LLVector3;
diff --git a/indra/llinventory/llinventory.cpp b/indra/llinventory/llinventory.cpp
index fbf23bc3f0..43aa2ab799 100644
--- a/indra/llinventory/llinventory.cpp
+++ b/indra/llinventory/llinventory.cpp
@@ -28,6 +28,7 @@
 #include "llinventory.h"
 
 #include "lldbstrings.h"
+#include "llfasttimer.h"
 #include "llinventorydefines.h"
 #include "llxorcipher.h"
 #include "llsd.h"
diff --git a/indra/llkdu/tests/llimagej2ckdu_test.cpp b/indra/llkdu/tests/llimagej2ckdu_test.cpp
index 62c245f125..14fbf344ab 100644
--- a/indra/llkdu/tests/llimagej2ckdu_test.cpp
+++ b/indra/llkdu/tests/llimagej2ckdu_test.cpp
@@ -43,7 +43,9 @@
 
 // End Stubbing
 // -------------------------------------------------------------------------------------------
-// Stubb the LL Image Classes
+// Stub the LL Image Classes
+LLTrace::MemStatHandle	LLImageBase::sMemStat("LLImage");
+
 LLImageRaw::LLImageRaw() { }
 LLImageRaw::~LLImageRaw() { }
 U8* LLImageRaw::allocateData(S32 ) { return NULL; }
diff --git a/indra/llmath/llcamera.cpp b/indra/llmath/llcamera.cpp
index 22ba26f99b..6551b52462 100644
--- a/indra/llmath/llcamera.cpp
+++ b/indra/llmath/llcamera.cpp
@@ -161,7 +161,7 @@ size_t LLCamera::readFrustumFromBuffer(const char *buffer)
 
 // ---------------- test methods  ---------------- 
 
-S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius) 
+S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius, const LLPlane* planes) 
 {
 	static const LLVector4a scaler[] = {
 		LLVector4a(-1,-1,-1),
@@ -174,6 +174,12 @@ S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius)
 		LLVector4a( 1, 1, 1)
 	};
 
+	if(!planes)
+	{
+		//use agent space
+		planes = mAgentPlanes;
+	}
+
 	U8 mask = 0;
 	bool result = false;
 	LLVector4a rscale, maxp, minp;
@@ -183,7 +189,7 @@ S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius)
 		mask = mPlaneMask[i];
 		if (mask != 0xff)
 		{
-			const LLPlane& p(mAgentPlanes[i]);
+			const LLPlane& p(planes[i]);
 			p.getAt<3>(d);
 			rscale.setMul(radius, scaler[mask]);
 			minp.setSub(center, rscale);
@@ -204,8 +210,14 @@ S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius)
 	return result?1:2;
 }
 
+//exactly same as the function AABBInFrustum(...)
+//except uses mRegionPlanes instead of mAgentPlanes.
+S32 LLCamera::AABBInRegionFrustum(const LLVector4a& center, const LLVector4a& radius) 
+{
+	return AABBInFrustum(center, radius, mRegionPlanes);
+}
 
-S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius) 
+S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes) 
 {
 	static const LLVector4a scaler[] = {
 		LLVector4a(-1,-1,-1),
@@ -218,6 +230,12 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a&
 		LLVector4a( 1, 1, 1)
 	};
 
+	if(!planes)
+	{
+		//use agent space
+		planes = mAgentPlanes;
+	}
+
 	U8 mask = 0;
 	bool result = false;
 	LLVector4a rscale, maxp, minp;
@@ -227,7 +245,7 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a&
 		mask = mPlaneMask[i];
 		if ((i != 5) && (mask != 0xff))
 		{
-			const LLPlane& p(mAgentPlanes[i]);
+			const LLPlane& p(planes[i]);
 			p.getAt<3>(d);
 			rscale.setMul(radius, scaler[mask]);
 			minp.setSub(center, rscale);
@@ -248,6 +266,13 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a&
 	return result?1:2;
 }
 
+//exactly same as the function AABBInFrustumNoFarClip(...)
+//except uses mRegionPlanes instead of mAgentPlanes.
+S32 LLCamera::AABBInRegionFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius) 
+{
+	return AABBInFrustumNoFarClip(center, radius, mRegionPlanes);
+}
+
 int LLCamera::sphereInFrustumQuick(const LLVector3 &sphere_center, const F32 radius) 
 {
 	LLVector3 dist = sphere_center-mFrustCenter;
@@ -584,6 +609,23 @@ void LLCamera::calcAgentFrustumPlanes(LLVector3* frust)
 	}
 }
 
+//calculate regional planes from mAgentPlanes.
+//vector "shift" is the vector of the region origin in the agent space.
+void LLCamera::calcRegionFrustumPlanes(const LLVector3& shift) 
+{
+	F32 d;
+	LLVector3 n;
+	for(S32 i = 0 ; i < 7; i++)
+	{
+		if (mPlaneMask[i] != 0xff)
+		{
+			n.setVec(mAgentPlanes[i][0], mAgentPlanes[i][1], mAgentPlanes[i][2]);
+			d = mAgentPlanes[i][3] - n * shift;
+			mRegionPlanes[i].setVec(n, d);
+		}
+	}
+}
+
 void LLCamera::calculateFrustumPlanes(F32 left, F32 right, F32 top, F32 bottom)
 {
 	LLVector3 a, b, c;
diff --git a/indra/llmath/llcamera.h b/indra/llmath/llcamera.h
index 0b591be622..898d73ed7e 100644
--- a/indra/llmath/llcamera.h
+++ b/indra/llmath/llcamera.h
@@ -109,6 +109,7 @@ public:
 
 private:
 	LL_ALIGN_16(LLPlane mAgentPlanes[7]);  //frustum planes in agent space a la gluUnproject (I'm a bastard, I know) - DaveP
+	LL_ALIGN_16(LLPlane mRegionPlanes[7]);  //frustum planes in a local region space, derived from mAgentPlanes
 	U8 mPlaneMask[8];         // 8 for alignment	
 	
 	F32 mView;					// angle between top and bottom frustum planes in radians.
@@ -178,6 +179,7 @@ public:
 	// Return number of bytes copied.
 	size_t readFrustumFromBuffer(const char *buffer);
 	void calcAgentFrustumPlanes(LLVector3* frust);
+	void calcRegionFrustumPlanes(const LLVector3& shift); //calculate regional planes from mAgentPlanes.
 	void ignoreAgentFrustumPlane(S32 idx);
 
 	// Returns 1 if partly in, 2 if fully in.
@@ -186,8 +188,10 @@ public:
 	S32 sphereInFrustum(const LLVector3 &center, const F32 radius) const;
 	S32 pointInFrustum(const LLVector3 &point) const { return sphereInFrustum(point, 0.0f); }
 	S32 sphereInFrustumFull(const LLVector3 &center, const F32 radius) const { return sphereInFrustum(center, radius); }
-	S32 AABBInFrustum(const LLVector4a& center, const LLVector4a& radius);
-	S32 AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius);
+	S32 AABBInFrustum(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes = NULL);
+	S32 AABBInRegionFrustum(const LLVector4a& center, const LLVector4a& radius);
+	S32 AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes = NULL);
+	S32 AABBInRegionFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius);
 
 	//does a quick 'n dirty sphere-sphere check
 	S32 sphereInFrustumQuick(const LLVector3 &sphere_center, const F32 radius); 
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 02c8d2b86f..47ba0c4fc4 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -6066,12 +6066,13 @@ BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
 	S32 max_t = volume->getPath().mPath.size();
 
 	// S32 i;
-	S32 num_vertices = 0, num_indices = 0;
+	//S32 num_vertices = 0;
+	//S32 num_indices = 0;
 	S32	grid_size = (profile.size()-1)/4;
-	S32	quad_count = (grid_size * grid_size);
+	//S32	quad_count = (grid_size * grid_size);
 
-	num_vertices = (grid_size+1)*(grid_size+1);
-	num_indices = quad_count * 4;
+	//num_vertices = (grid_size+1)*(grid_size+1);
+	//num_indices = quad_count * 4;
 
 	LLVector4a& min = mExtents[0];
 	LLVector4a& max = mExtents[1];
diff --git a/indra/llmath/v4color.h b/indra/llmath/v4color.h
index b047f86e6e..0d632f59be 100644
--- a/indra/llmath/v4color.h
+++ b/indra/llmath/v4color.h
@@ -49,10 +49,10 @@ class LLColor4
 		LLColor4();						// Initializes LLColor4 to (0, 0, 0, 1)
 		LLColor4(F32 r, F32 g, F32 b);		// Initializes LLColor4 to (r, g, b, 1)
 		LLColor4(F32 r, F32 g, F32 b, F32 a);		// Initializes LLColor4 to (r. g, b, a)
-		LLColor4(U32 clr);							// Initializes LLColor4 to (r=clr>>24, etc))
-		LLColor4(const F32 *vec);			// Initializes LLColor4 to (vec[0]. vec[1], vec[2], 1)
 		LLColor4(const LLColor3 &vec, F32 a = 1.f);	// Initializes LLColor4 to (vec, a)
 		explicit LLColor4(const LLSD& sd);
+		explicit LLColor4(const F32 *vec);			// Initializes LLColor4 to (vec[0]. vec[1], vec[2], 1)
+		explicit LLColor4(U32 clr);							// Initializes LLColor4 to (r=clr>>24, etc))
 		explicit LLColor4(const LLColor4U& color4u);  // "explicit" to avoid automatic conversion
 		explicit LLColor4(const LLVector4& vector4);  // "explicit" to avoid automatic conversion
 
diff --git a/indra/llmessage/llassetstorage.cpp b/indra/llmessage/llassetstorage.cpp
index 9b86daebe5..430c9503ac 100644
--- a/indra/llmessage/llassetstorage.cpp
+++ b/indra/llmessage/llassetstorage.cpp
@@ -50,10 +50,14 @@
 #include "lltransfertargetvfile.h" // For debugging
 
 #include "llmetrics.h"
+#include "lltrace.h"
 
 LLAssetStorage *gAssetStorage = NULL;
 LLMetrics *LLAssetStorage::metric_recipient = NULL;
 
+static LLTrace::CountStatHandle<> sFailedDownloadCount("faileddownloads", "Number of times LLAssetStorage::getAssetData() has failed");
+
+
 const LLUUID CATEGORIZE_LOST_AND_FOUND_ID(std::string("00000000-0000-0000-0000-000000000010"));
 
 const U64 TOXIC_ASSET_LIFETIME = (120 * 1000000);		// microseconds
@@ -450,6 +454,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 
 		if (callback)
 		{
+			add(sFailedDownloadCount, 1);
 			callback(mVFS, uuid, type, user_data, LL_ERR_ASSET_REQUEST_FAILED, LL_EXSTAT_NONE);
 		}
 		return;
@@ -460,6 +465,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 		// Special case early out for NULL uuid and for shutting down
 		if (callback)
 		{
+			add(sFailedDownloadCount, 1);
 			callback(mVFS, uuid, type, user_data, LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE, LL_EXSTAT_NULL_UUID);
 		}
 		return;
@@ -572,6 +578,7 @@ void LLAssetStorage::_queueDataRequest(const LLUUID& uuid, LLAssetType::EType at
 		llwarns << "Attempt to move asset data request upstream w/o valid upstream provider" << llendl;
 		if (callback)
 		{
+			add(sFailedDownloadCount, 1);
 			callback(mVFS, uuid, atype, user_data, LL_ERR_CIRCUIT_GONE, LL_EXSTAT_NO_UPSTREAM);
 		}
 	}
@@ -649,6 +656,10 @@ void LLAssetStorage::downloadCompleteCallback(
 		LLAssetRequest* tmp = *curiter;
 		if (tmp->mDownCallback)
 		{
+			if (result != LL_ERR_NOERR)
+			{
+				add(sFailedDownloadCount, 1);
+			}
 			tmp->mDownCallback(gAssetStorage->mVFS, req->getUUID(), req->getType(), tmp->mUserData, result, ext_status);
 		}
 		delete tmp;
@@ -669,6 +680,7 @@ void LLAssetStorage::getEstateAsset(const LLHost &object_sim, const LLUUID &agen
 		// Special case early out for NULL uuid
 		if (callback)
 		{
+			add(sFailedDownloadCount, 1);
 			callback(mVFS, asset_id, atype, user_data, LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE, LL_EXSTAT_NULL_UUID);
 		}
 		return;
@@ -741,6 +753,7 @@ void LLAssetStorage::getEstateAsset(const LLHost &object_sim, const LLUUID &agen
 			llwarns << "Attempt to move asset data request upstream w/o valid upstream provider" << llendl;
 			if (callback)
 			{
+				add(sFailedDownloadCount, 1);
 				callback(mVFS, asset_id, atype, user_data, LL_ERR_CIRCUIT_GONE, LL_EXSTAT_NO_UPSTREAM);
 			}
 		}
@@ -783,6 +796,10 @@ void LLAssetStorage::downloadEstateAssetCompleteCallback(
 		}
 	}
 
+	if (result != LL_ERR_NOERR)
+	{
+		add(sFailedDownloadCount, 1);
+	}
 	req->mDownCallback(gAssetStorage->mVFS, req->getUUID(), req->getAType(), req->mUserData, result, ext_status);
 }
 
@@ -883,6 +900,7 @@ void LLAssetStorage::getInvItemAsset(const LLHost &object_sim, const LLUUID &age
 			llwarns << "Attempt to move asset data request upstream w/o valid upstream provider" << llendl;
 			if (callback)
 			{
+				add(sFailedDownloadCount, 1);
 				callback(mVFS, asset_id, atype, user_data, LL_ERR_CIRCUIT_GONE, LL_EXSTAT_NO_UPSTREAM);
 			}
 		}
@@ -925,6 +943,10 @@ void LLAssetStorage::downloadInvItemCompleteCallback(
 		}
 	}
 
+	if (result != LL_ERR_NOERR)
+	{
+		add(sFailedDownloadCount, 1);
+	}
 	req->mDownCallback(gAssetStorage->mVFS, req->getUUID(), req->getType(), req->mUserData, result, ext_status);
 }
 
@@ -1237,6 +1259,7 @@ bool LLAssetStorage::deletePendingRequestImpl(LLAssetStorage::request_list_t* re
 		}
 		if (req->mDownCallback)
 		{
+			add(sFailedDownloadCount, 1);
 			req->mDownCallback(mVFS, req->getUUID(), req->getType(), req->mUserData, error, LL_EXSTAT_REQUEST_DROPPED);
 		}
 		if (req->mInfoCallback)
@@ -1363,6 +1386,10 @@ void LLAssetStorage::legacyGetDataCallback(LLVFS *vfs, const LLUUID &uuid, LLAss
 		}
 	}
 
+	if (status != LL_ERR_NOERR)
+	{
+		add(sFailedDownloadCount, 1);
+	}
 	legacy->mDownCallback(filename.c_str(), uuid, legacy->mUserData, status, ext_status);
 	delete legacy;
 }
diff --git a/indra/llmessage/llbuffer.cpp b/indra/llmessage/llbuffer.cpp
index 01da20f060..1722b48f44 100644
--- a/indra/llmessage/llbuffer.cpp
+++ b/indra/llmessage/llbuffer.cpp
@@ -32,6 +32,7 @@
 #include "llmath.h"
 #include "llstl.h"
 #include "llthread.h"
+#include <iterator>
 
 #define ASSERT_LLBUFFERARRAY_MUTEX_LOCKED llassert(!mMutexp || mMutexp->isSelfLocked());
 
diff --git a/indra/llmessage/lldispatcher.cpp b/indra/llmessage/lldispatcher.cpp
index b2dc414a68..7ac3651a76 100644
--- a/indra/llmessage/lldispatcher.cpp
+++ b/indra/llmessage/lldispatcher.cpp
@@ -29,6 +29,7 @@
 #include "lldispatcher.h"
 
 #include <algorithm>
+#include <iterator>
 #include "llstl.h"
 #include "message.h"
 
diff --git a/indra/llmessage/llfiltersd2xmlrpc.cpp b/indra/llmessage/llfiltersd2xmlrpc.cpp
index e0ca056a5f..dbb8c4e28d 100644
--- a/indra/llmessage/llfiltersd2xmlrpc.cpp
+++ b/indra/llmessage/llfiltersd2xmlrpc.cpp
@@ -80,6 +80,7 @@
 
 #include "llbuffer.h"
 #include "llbufferstream.h"
+#include "llfasttimer.h"
 #include "llmemorystream.h"
 #include "llsd.h"
 #include "llsdserialize.h"
diff --git a/indra/llmessage/lliohttpserver.cpp b/indra/llmessage/lliohttpserver.cpp
index 1236fc8b71..f9d37b2e39 100644
--- a/indra/llmessage/lliohttpserver.cpp
+++ b/indra/llmessage/lliohttpserver.cpp
@@ -33,6 +33,7 @@
 #include "llapr.h"
 #include "llbuffer.h"
 #include "llbufferstream.h"
+#include "llfasttimer.h"
 #include "llhttpnode.h"
 #include "lliopipe.h"
 #include "lliosocket.h"
diff --git a/indra/llmessage/lliopipe.h b/indra/llmessage/lliopipe.h
index cbd17b5a3d..9a0a427efd 100644
--- a/indra/llmessage/lliopipe.h
+++ b/indra/llmessage/lliopipe.h
@@ -31,6 +31,7 @@
 
 #include <boost/intrusive_ptr.hpp>
 #include <boost/shared_ptr.hpp>
+#include "llwin32headerslean.h"
 #include "apr_poll.h"
 
 #include "llsd.h"
diff --git a/indra/llmessage/lliosocket.cpp b/indra/llmessage/lliosocket.cpp
index 0287026659..1383d37f41 100644
--- a/indra/llmessage/lliosocket.cpp
+++ b/indra/llmessage/lliosocket.cpp
@@ -32,6 +32,7 @@
 #include "llapr.h"
 
 #include "llbuffer.h"
+#include "llfasttimer.h"
 #include "llhost.h"
 #include "llpumpio.h"
 
diff --git a/indra/llmessage/lliosocket.h b/indra/llmessage/lliosocket.h
index be0f7dfcc6..ec998552d0 100644
--- a/indra/llmessage/lliosocket.h
+++ b/indra/llmessage/lliosocket.h
@@ -38,6 +38,7 @@
  */
 
 #include "lliopipe.h"
+#include "llwin32headerslean.h"
 #include "apr_pools.h"
 #include "apr_network_io.h"
 #include "llchainio.h"
diff --git a/indra/llmessage/llioutil.cpp b/indra/llmessage/llioutil.cpp
index 8c50fd5069..9fd49d23d4 100644
--- a/indra/llmessage/llioutil.cpp
+++ b/indra/llmessage/llioutil.cpp
@@ -28,6 +28,7 @@
 
 #include "linden_common.h"
 #include "llioutil.h"
+#include "llfasttimer.h"
 
 /**
  * LLIOFlush
diff --git a/indra/llmessage/llmail.cpp b/indra/llmessage/llmail.cpp
index 08b31e9c7a..dc27f2ca4a 100644
--- a/indra/llmessage/llmail.cpp
+++ b/indra/llmessage/llmail.cpp
@@ -29,12 +29,7 @@
 #include "llmail.h"
 
 // APR on Windows needs full windows headers
-#ifdef LL_WINDOWS
-#	undef WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
-#endif
-
+#include "llwin32headers.h"
 #include <string>
 #include <sstream>
 
diff --git a/indra/llmessage/llproxy.cpp b/indra/llmessage/llproxy.cpp
index 9988fcd9c0..9b8d19cc3e 100644
--- a/indra/llmessage/llproxy.cpp
+++ b/indra/llmessage/llproxy.cpp
@@ -57,13 +57,15 @@ LLProxy::LLProxy():
 		mAuthMethodSelected(METHOD_NOAUTH),
 		mSocksUsername(),
 		mSocksPassword()
-{
-}
+{}
 
 LLProxy::~LLProxy()
 {
-	stopSOCKSProxy();
-	disableHTTPProxy();
+	if (ll_apr_is_initialized())
+	{
+		stopSOCKSProxy();
+		disableHTTPProxy();
+	}
 }
 
 /**
diff --git a/indra/llmessage/llpumpio.cpp b/indra/llmessage/llpumpio.cpp
index 0623e99f0a..e3f09f34ee 100644
--- a/indra/llmessage/llpumpio.cpp
+++ b/indra/llmessage/llpumpio.cpp
@@ -34,6 +34,7 @@
 #include "apr_poll.h"
 
 #include "llapr.h"
+#include "llfasttimer.h"
 #include "llstl.h"
 
 // These should not be enabled in production, but they can be
diff --git a/indra/llmessage/llsdrpcclient.cpp b/indra/llmessage/llsdrpcclient.cpp
index fcda0e81a3..05b27f582c 100644
--- a/indra/llmessage/llsdrpcclient.cpp
+++ b/indra/llmessage/llsdrpcclient.cpp
@@ -30,6 +30,7 @@
 #include "llsdrpcclient.h"
 
 #include "llbufferstream.h"
+#include "llfasttimer.h"
 #include "llfiltersd2xmlrpc.h"
 #include "llpumpio.h"
 #include "llsd.h"
diff --git a/indra/llmessage/llsdrpcserver.cpp b/indra/llmessage/llsdrpcserver.cpp
index f26ee52f71..2c233c1c0d 100644
--- a/indra/llmessage/llsdrpcserver.cpp
+++ b/indra/llmessage/llsdrpcserver.cpp
@@ -31,6 +31,7 @@
 
 #include "llbuffer.h"
 #include "llbufferstream.h"
+#include "llfasttimer.h"
 #include "llpumpio.h"
 #include "llsdserialize.h"
 #include "llstl.h"
diff --git a/indra/llmessage/llurlrequest.cpp b/indra/llmessage/llurlrequest.cpp
index 227efdb07a..1264659b62 100644
--- a/indra/llmessage/llurlrequest.cpp
+++ b/indra/llmessage/llurlrequest.cpp
@@ -33,6 +33,7 @@
 #include <openssl/x509_vfy.h>
 #include <openssl/ssl.h>
 #include "llcurl.h"
+#include "llfasttimer.h"
 #include "llioutil.h"
 #include "llproxy.h"
 #include "llpumpio.h"
@@ -280,6 +281,8 @@ LLIOPipe::EStatus LLURLRequest::handleError(
 static LLFastTimer::DeclareTimer FTM_PROCESS_URL_REQUEST("URL Request");
 static LLFastTimer::DeclareTimer FTM_PROCESS_URL_REQUEST_GET_RESULT("Get Result");
 static LLFastTimer::DeclareTimer FTM_URL_PERFORM("Perform");
+static LLFastTimer::DeclareTimer FTM_PROCESS_URL_PUMP_RESPOND("Pump Respond");
+static LLFastTimer::DeclareTimer FTM_URL_ADJUST_TIMEOUT("Adjust Timeout");
 
 // virtual
 LLIOPipe::EStatus LLURLRequest::process_impl(
@@ -299,7 +302,6 @@ LLIOPipe::EStatus LLURLRequest::process_impl(
 	const S32 MIN_ACCUMULATION = 100000;
 	if(pump && (mDetail->mByteAccumulator > MIN_ACCUMULATION))
 	{
-		static LLFastTimer::DeclareTimer FTM_URL_ADJUST_TIMEOUT("Adjust Timeout");
 		LLFastTimer t(FTM_URL_ADJUST_TIMEOUT);
 		 // This is a pretty sloppy calculation, but this
 		 // tries to make the gross assumption that if data
@@ -398,7 +400,6 @@ LLIOPipe::EStatus LLURLRequest::process_impl(
 						link.mChannels = LLBufferArray::makeChannelConsumer(
 							channels);
 						chain.push_back(link);
-						static LLFastTimer::DeclareTimer FTM_PROCESS_URL_PUMP_RESPOND("Pump Respond");
 						{
 							LLFastTimer t(FTM_PROCESS_URL_PUMP_RESPOND);
 							pump->respond(chain, buffer, context);
diff --git a/indra/llmessage/net.cpp b/indra/llmessage/net.cpp
index 85aef5da00..6f8508ee8c 100644
--- a/indra/llmessage/net.cpp
+++ b/indra/llmessage/net.cpp
@@ -32,9 +32,7 @@
 #include <stdexcept>
 
 #if LL_WINDOWS
-	#define WIN32_LEAN_AND_MEAN
-	#include <winsock2.h>
-	#include <windows.h>
+#include "llwin32headerslean.h"
 #else
 	#include <sys/types.h>
 	#include <sys/socket.h>
diff --git a/indra/llplugin/llpluginprocesschild.h b/indra/llplugin/llpluginprocesschild.h
index a9d6794e40..531422e792 100644
--- a/indra/llplugin/llpluginprocesschild.h
+++ b/indra/llplugin/llpluginprocesschild.h
@@ -29,6 +29,7 @@
 #ifndef LL_LLPLUGINPROCESSCHILD_H
 #define LL_LLPLUGINPROCESSCHILD_H
 
+#include <queue>
 #include "llpluginmessage.h"
 #include "llpluginmessagepipe.h"
 #include "llplugininstance.h"
diff --git a/indra/llplugin/llpluginprocessparent.h b/indra/llplugin/llpluginprocessparent.h
index 990fc5cbae..24be7eb148 100644
--- a/indra/llplugin/llpluginprocessparent.h
+++ b/indra/llplugin/llpluginprocessparent.h
@@ -29,6 +29,8 @@
 #ifndef LL_LLPLUGINPROCESSPARENT_H
 #define LL_LLPLUGINPROCESSPARENT_H
 
+#include <queue>
+
 #include "llapr.h"
 #include "llprocess.h"
 #include "llpluginmessage.h"
diff --git a/indra/llplugin/tests/llplugincookiestore_test.cpp b/indra/llplugin/tests/llplugincookiestore_test.cpp
index aefa1ca144..c2cb236cba 100644
--- a/indra/llplugin/tests/llplugincookiestore_test.cpp
+++ b/indra/llplugin/tests/llplugincookiestore_test.cpp
@@ -27,6 +27,7 @@
  */
 
 #include "linden_common.h"
+#include <list>
 #include "../test/lltut.h"
 
 #include "../llplugincookiestore.h"
diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index 647512eb2e..9a3bb7560a 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -29,6 +29,7 @@
 #include "llfontgl.h"
 
 // Linden library includes
+#include "llfasttimer.h"
 #include "llfontfreetype.h"
 #include "llfontbitmapcache.h"
 #include "llfontregistry.h"
diff --git a/indra/llrender/llglheaders.h b/indra/llrender/llglheaders.h
index 509de51f4d..c9ce0d5588 100644
--- a/indra/llrender/llglheaders.h
+++ b/indra/llrender/llglheaders.h
@@ -540,9 +540,7 @@ extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
 // LL_WINDOWS
 
 // windows gl headers depend on things like APIENTRY, so include windows.
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headerslean.h"
 
 //----------------------------------------------------------------------------
 #include <GL/gl.h>
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index a4d7872ec2..751309af20 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -32,6 +32,7 @@
 #include "llimagegl.h"
 
 #include "llerror.h"
+#include "llfasttimer.h"
 #include "llimage.h"
 
 #include "llmath.h"
@@ -50,9 +51,9 @@ U32 wpo2(U32 i);
 
 U32 LLImageGL::sUniqueCount				= 0;
 U32 LLImageGL::sBindCount				= 0;
-S32 LLImageGL::sGlobalTextureMemoryInBytes		= 0;
-S32 LLImageGL::sBoundTextureMemoryInBytes		= 0;
-S32 LLImageGL::sCurBoundTextureMemory	= 0;
+LLUnit<LLUnits::Bytes, S32> LLImageGL::sGlobalTextureMemory		= 0;
+LLUnit<LLUnits::Bytes, S32> LLImageGL::sBoundTextureMemory		= 0;
+LLUnit<LLUnits::Bytes, S32> LLImageGL::sCurBoundTextureMemory	= 0;
 S32 LLImageGL::sCount					= 0;
 LLImageGL::dead_texturelist_t LLImageGL::sDeadTextureList[LLTexUnit::TT_NONE];
 U32 LLImageGL::sCurTexName = 1;
@@ -243,7 +244,7 @@ void LLImageGL::updateStats(F32 current_time)
 {
 	LLFastTimer t(FTM_IMAGE_UPDATE_STATS);
 	sLastFrameTime = current_time;
-	sBoundTextureMemoryInBytes = sCurBoundTextureMemory;
+	sBoundTextureMemory = sCurBoundTextureMemory;
 	sCurBoundTextureMemory = 0;
 }
 
@@ -251,7 +252,7 @@ void LLImageGL::updateStats(F32 current_time)
 S32 LLImageGL::updateBoundTexMem(const S32 mem, const S32 ncomponents, S32 category)
 {
 	LLImageGL::sCurBoundTextureMemory += mem ;
-	return LLImageGL::sCurBoundTextureMemory;
+	return LLImageGL::sCurBoundTextureMemory.value();
 }
 
 //----------------------------------------------------------------------------
@@ -1395,7 +1396,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_
 
 	if (old_name != 0)
 	{
-		sGlobalTextureMemoryInBytes -= mTextureMemory;
+		sGlobalTextureMemory -= mTextureMemory;
 
 		LLImageGL::deleteTextures(mBindTarget, mFormatInternal, mMipLevels, 1, &old_name);
 
@@ -1403,7 +1404,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_
 	}
 
 	mTextureMemory = getMipBytes(discard_level);
-	sGlobalTextureMemoryInBytes += mTextureMemory;
+	sGlobalTextureMemory += mTextureMemory;
 	mTexelsInGLTexture = getWidth() * getHeight() ;
 
 	// mark this as bound at this point, so we don't throw it out immediately
@@ -1562,7 +1563,7 @@ void LLImageGL::destroyGLTexture()
 	{
 		if(mTextureMemory)
 		{
-			sGlobalTextureMemoryInBytes -= mTextureMemory;
+			sGlobalTextureMemory -= mTextureMemory;
 			mTextureMemory = 0;
 		}
 		
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index cf3c484c79..11555e20c4 100644
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -34,6 +34,7 @@
 #include "llpointer.h"
 #include "llrefcount.h"
 #include "v2math.h"
+#include "llunit.h"
 
 #include "llrender.h"
 class LLTextureAtlas ;
@@ -245,9 +246,9 @@ public:
 	static F32 sLastFrameTime;
 
 	// Global memory statistics
-	static S32 sGlobalTextureMemoryInBytes;		// Tracks main memory texmem
-	static S32 sBoundTextureMemoryInBytes;	// Tracks bound texmem for last completed frame
-	static S32 sCurBoundTextureMemory;		// Tracks bound texmem for current frame
+	static LLUnit<LLUnits::Bytes, S32> sGlobalTextureMemory;	// Tracks main memory texmem
+	static LLUnit<LLUnits::Bytes, S32> sBoundTextureMemory;	// Tracks bound texmem for last completed frame
+	static LLUnit<LLUnits::Bytes, S32> sCurBoundTextureMemory;		// Tracks bound texmem for current frame
 	static U32 sBindCount;					// Tracks number of texture binds for current frame
 	static U32 sUniqueCount;				// Tracks number of unique texture binds for current frame
 	static BOOL sGlobalUseAnisotropic;
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index dfbd8cd4ee..5801f93e53 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -26,7 +26,7 @@
 
 #include "linden_common.h"
 
-#include <boost/static_assert.hpp>
+#include "llfasttimer.h"
 #include "llsys.h"
 #include "llvertexbuffer.h"
 // #include "llrender.h"
diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index 705fe16559..93ffa7b70d 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -758,11 +758,11 @@ void LLButton::draw()
 		mCurGlowStrength = lerp(mCurGlowStrength,
 					mFlashing ? (flash? 1.0 : 0.0)
 					: mHoverGlowStrength,
-					LLCriticalDamp::getInterpolant(0.05f));
+					LLSmoothInterpolation::getInterpolant(0.05f));
 	}
 	else
 	{
-		mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLCriticalDamp::getInterpolant(0.05f));
+		mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f));
 	}
 
 	// Draw button image, if available.
diff --git a/indra/llui/llcontainerview.cpp b/indra/llui/llcontainerview.cpp
index e08ccb0b78..06f8e72c9c 100644
--- a/indra/llui/llcontainerview.cpp
+++ b/indra/llui/llcontainerview.cpp
@@ -49,7 +49,6 @@ LLContainerView::LLContainerView(const LLContainerView::Params& p)
 	mLabel(p.label),
 	mDisplayChildren(p.display_children)
 {
-	mCollapsible = TRUE;
 	mScrollContainer = NULL;
 }
 
@@ -75,6 +74,11 @@ bool LLContainerView::addChild(LLView* child, S32 tab_group)
 	return res;
 }
 
+BOOL LLContainerView::handleDoubleClick(S32 x, S32 y, MASK mask)
+{
+	return handleMouseDown(x, y, mask);
+}
+
 BOOL LLContainerView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
 	BOOL handled = FALSE;
@@ -84,7 +88,7 @@ BOOL LLContainerView::handleMouseDown(S32 x, S32 y, MASK mask)
 	}
 	if (!handled)
 	{
-		if( mCollapsible && mShowLabel && (y >= getRect().getHeight() - 10) )
+		if( mShowLabel && (y >= getRect().getHeight() - 10) )
 		{
 			setDisplayChildren(!mDisplayChildren);
 			reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
diff --git a/indra/llui/llcontainerview.h b/indra/llui/llcontainerview.h
index e81600fd6c..ac92b19977 100644
--- a/indra/llui/llcontainerview.h
+++ b/indra/llui/llcontainerview.h
@@ -66,6 +66,7 @@ public:
 	/*virtual*/ BOOL postBuild();
 	/*virtual*/ bool addChild(LLView* view, S32 tab_group = 0);
 	
+	/*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
 	/*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
 	/*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
 
@@ -87,8 +88,5 @@ public:
 protected:
 	BOOL mDisplayChildren;
 	std::string mLabel;
-public:
-	BOOL mCollapsible;
-
 };
 #endif // LL_CONTAINERVIEW_
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index 1594be2512..a29ad12d23 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -1119,11 +1119,11 @@ void LLFloater::handleReshape(const LLRect& new_rect, bool by_user)
 			{
 				setDocked( false, false);
 			}
-			storeRectControl();
-			mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
-			LLRect screen_rect = calcScreenRect();
-			mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
-		}
+		storeRectControl();
+		mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
+		LLRect screen_rect = calcScreenRect();
+		mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
+	}
 
 		// gather all snapped dependents
 		for(handle_set_iter_t dependent_it = mDependents.begin();
@@ -1720,7 +1720,7 @@ void LLFloater::onClickHelp( LLFloater* self )
 	}
 }
 
-// static
+// static 
 void LLFloater::closeFrontmostFloater()
 {
 	LLFloater* floater_to_close = gFloaterView->getFrontmostClosableFloater();
@@ -3085,7 +3085,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
 			parser.readXUI(node, output_params, LLUICtrlFactory::getInstance()->getCurFileName());
 			setupParamsForExport(output_params, parent);
 			output_node->setName(node->getName()->mString);
-			parser.writeXUI(output_node, output_params, &default_params);
+			parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
 			return TRUE;
 		}
 
@@ -3115,9 +3115,8 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
 	{
 		Params output_params(params);
 		setupParamsForExport(output_params, parent);
-        Params default_params(LLUICtrlFactory::getDefaultParams<LLFloater>());
 		output_node->setName(node->getName()->mString);
-		parser.writeXUI(output_node, output_params, &default_params);
+		parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
 	}
 
 	// Default floater position to top-left corner of screen
diff --git a/indra/llui/llfloaterreg.h b/indra/llui/llfloaterreg.h
index a1e1f8a988..e3b17dcb4f 100644
--- a/indra/llui/llfloaterreg.h
+++ b/indra/llui/llfloaterreg.h
@@ -30,6 +30,7 @@
 #include "llrect.h"
 #include "llsd.h"
 
+#include <list>
 #include <boost/function.hpp>
 
 //*******************************************************
diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index 4c730286da..d4a310b8cf 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -42,12 +42,6 @@ static const F32 MAX_FRACTIONAL_SIZE = 1.f;
 static LLDefaultChildRegistry::Register<LLLayoutStack> register_layout_stack("layout_stack");
 static LLLayoutStack::LayoutStackRegistry::Register<LLLayoutPanel> register_layout_panel("layout_panel");
 
-void LLLayoutStack::OrientationNames::declareValues()
-{
-	declare("horizontal", HORIZONTAL);
-	declare("vertical", VERTICAL);
-}
-
 //
 // LLLayoutPanel
 //
@@ -141,7 +135,7 @@ S32 LLLayoutPanel::getVisibleDim() const
 						+ (((F32)mTargetDim - min_dim) * (1.f - mCollapseAmt))));
 }
  
-void LLLayoutPanel::setOrientation( LLLayoutStack::ELayoutOrientation orientation )
+void LLLayoutPanel::setOrientation( LLView::EOrientation orientation )
 {
 	mOrientation = orientation;
 	S32 layout_dim = llround((F32)((mOrientation == LLLayoutStack::HORIZONTAL)
@@ -592,7 +586,7 @@ bool LLLayoutStack::animatePanels()
 			{
 				if (!mAnimatedThisFrame)
 				{
-					panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 1.f, LLCriticalDamp::getInterpolant(mOpenTimeConstant));
+					panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 1.f, LLSmoothInterpolation::getInterpolant(mOpenTimeConstant));
 					if (panelp->mVisibleAmt > 0.99f)
 					{
 						panelp->mVisibleAmt = 1.f;
@@ -617,7 +611,7 @@ bool LLLayoutStack::animatePanels()
 			{
 				if (!mAnimatedThisFrame)
 				{
-					panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 0.f, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
+					panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 0.f, LLSmoothInterpolation::getInterpolant(mCloseTimeConstant));
 					if (panelp->mVisibleAmt < 0.001f)
 					{
 						panelp->mVisibleAmt = 0.f;
@@ -644,7 +638,7 @@ bool LLLayoutStack::animatePanels()
 			{
 				if (!mAnimatedThisFrame)
 				{
-					panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
+					panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLSmoothInterpolation::getInterpolant(mCloseTimeConstant));
 				}
 			
 				if (llabs(panelp->mCollapseAmt - collapse_state) < 0.001f)
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index 648cd5fdce..f1668d7473 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -37,24 +37,13 @@ class LLLayoutPanel;
 class LLLayoutStack : public LLView, public LLInstanceTracker<LLLayoutStack>
 {
 public:
-	typedef enum e_layout_orientation
-	{
-		HORIZONTAL,
-		VERTICAL
-	} ELayoutOrientation;
-
-	struct OrientationNames
-	:	public LLInitParam::TypeValuesHelper<ELayoutOrientation, OrientationNames>
-	{
-		static void declareValues();
-	};
 
 	struct LayoutStackRegistry : public LLChildRegistry<LayoutStackRegistry>
 	{};
 
 	struct Params : public LLInitParam::Block<Params, LLView::Params>
 	{
-		Mandatory<ELayoutOrientation, OrientationNames>	orientation;
+		Mandatory<EOrientation>	orientation;
 		Optional<S32>			border_size;
 		Optional<bool>			animate,
 								clip;
@@ -104,7 +93,7 @@ private:
 	bool animatePanels();
 	void createResizeBar(LLLayoutPanel* panel);
 
-	const ELayoutOrientation mOrientation;
+	const EOrientation mOrientation;
 
 	typedef std::vector<LLLayoutPanel*> e_panel_list_t;
 	e_panel_list_t mPanels;
@@ -179,7 +168,7 @@ public:
 	F32 getVisibleAmount() const;
 	S32 getVisibleDim() const;
 
-	void setOrientation(LLLayoutStack::ELayoutOrientation orientation);
+	void setOrientation(LLView::EOrientation orientation);
 	void storeOriginalDim();
 
 	void setIgnoreReshape(bool ignore) { mIgnoreReshape = ignore; }
@@ -198,7 +187,7 @@ protected:
 	F32		mFractionalSize;
 	S32		mTargetDim;
 	bool	mIgnoreReshape;
-	LLLayoutStack::ELayoutOrientation mOrientation;
+	LLView::EOrientation mOrientation;
 	class LLResizeBar* mResizeBar;
 };
 
diff --git a/indra/llui/llmenugl.cpp b/indra/llui/llmenugl.cpp
index cd6cc6a75e..13888920f9 100644
--- a/indra/llui/llmenugl.cpp
+++ b/indra/llui/llmenugl.cpp
@@ -3673,7 +3673,7 @@ void LLTearOffMenu::draw()
 	if (getRect().getHeight() != mTargetHeight)
 	{
 		// animate towards target height
-		reshape(getRect().getWidth(), llceil(lerp((F32)getRect().getHeight(), mTargetHeight, LLCriticalDamp::getInterpolant(0.05f))));
+		reshape(getRect().getWidth(), llceil(lerp((F32)getRect().getHeight(), mTargetHeight, LLSmoothInterpolation::getInterpolant(0.05f))));
 	}
 	LLFloater::draw();
 }
diff --git a/indra/llui/llmultifloater.h b/indra/llui/llmultifloater.h
index 9fa917eca1..6c97f80e31 100644
--- a/indra/llui/llmultifloater.h
+++ b/indra/llui/llmultifloater.h
@@ -96,6 +96,3 @@ protected:
 };
 
 #endif  // LL_MULTI_FLOATER_H
-
-
-
diff --git a/indra/llui/llnotifications.cpp b/indra/llui/llnotifications.cpp
index 2bf88532c6..269cb4676a 100644
--- a/indra/llui/llnotifications.cpp
+++ b/indra/llui/llnotifications.cpp
@@ -464,7 +464,7 @@ LLNotification::LLNotification(const LLNotification::Params& p) :
 	mTimestamp(p.time_stamp), 
 	mSubstitutions(p.substitutions),
 	mPayload(p.payload),
-	mExpiresAt(0),
+	mExpiresAt(0.0),
 	mTemporaryResponder(false),
 	mRespondedTo(false),
 	mPriority(p.priority),
diff --git a/indra/llui/llpanel.cpp b/indra/llui/llpanel.cpp
index 67472ad166..188a0fea74 100644
--- a/indra/llui/llpanel.cpp
+++ b/indra/llui/llpanel.cpp
@@ -520,7 +520,7 @@ BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr outpu
 				Params output_params(params);
 				setupParamsForExport(output_params, parent);
 				output_node->setName(node->getName()->mString);
-				parser.writeXUI(output_node, output_params, &default_params);
+				parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
 				return TRUE;
 			}
 		
@@ -551,7 +551,7 @@ BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr outpu
 			Params output_params(params);
 			setupParamsForExport(output_params, parent);
 			output_node->setName(node->getName()->mString);
-			parser.writeXUI(output_node, output_params, &default_params);
+			parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
 		}
 		
 		params.from_xui = true;
diff --git a/indra/llui/llscrollbar.cpp b/indra/llui/llscrollbar.cpp
index 5d3bf7a670..92a80c73fe 100644
--- a/indra/llui/llscrollbar.cpp
+++ b/indra/llui/llscrollbar.cpp
@@ -493,11 +493,11 @@ void LLScrollbar::draw()
 	BOOL hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y));
 	if (hovered)
 	{
-		mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLCriticalDamp::getInterpolant(0.05f));
+		mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLSmoothInterpolation::getInterpolant(0.05f));
 	}
 	else
 	{
-		mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLCriticalDamp::getInterpolant(0.05f));
+		mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f));
 	}
 
 	// Draw background and thumb.
diff --git a/indra/llui/llscrollbar.h b/indra/llui/llscrollbar.h
index ff74f753b9..3f3ca1378b 100644
--- a/indra/llui/llscrollbar.h
+++ b/indra/llui/llscrollbar.h
@@ -40,13 +40,11 @@ class LLScrollbar
 {
 public:
 
-	enum ORIENTATION { HORIZONTAL, VERTICAL };
-	
 	typedef boost::function<void (S32, LLScrollbar*)> callback_t;
 	struct Params 
 	:	public LLInitParam::Block<Params, LLUICtrl::Params>
 	{
-		Mandatory<ORIENTATION>			orientation;
+		Mandatory<EOrientation>			orientation;
 		Mandatory<S32>					doc_size;
 		Mandatory<S32>					doc_pos;
 		Mandatory<S32>					page_size;
@@ -131,7 +129,7 @@ private:
 
 	callback_t			mChangeCallback;
 
-	const ORIENTATION	mOrientation;	
+	const EOrientation	mOrientation;	
 	S32					mDocSize;		// Size of the document that the scrollbar is modeling.  Units depend on the user.  0 <= mDocSize.
 	S32					mDocPos;		// Position within the doc that the scrollbar is modeling, in "lines" (user size)
 	S32					mPageSize;		// Maximum number of lines that can be seen at one time.
diff --git a/indra/llui/llscrollcontainer.cpp b/indra/llui/llscrollcontainer.cpp
index 2fd187a526..2abfb15494 100644
--- a/indra/llui/llscrollcontainer.cpp
+++ b/indra/llui/llscrollcontainer.cpp
@@ -140,7 +140,7 @@ LLScrollContainer::~LLScrollContainer( void )
 {
 	// mScrolledView and mScrollbar are child views, so the LLView
 	// destructor takes care of memory deallocation.
-	for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
+	for( S32 i = 0; i < ORIENTATION_COUNT; i++ )
 	{
 		mScrollbar[i] = NULL;
 	}
@@ -211,7 +211,7 @@ BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
 	{
 		return TRUE;
 	}
-	for( S32 i = 0; i < SCROLLBAR_COUNT; i++ )
+	for( S32 i = 0; i < ORIENTATION_COUNT; i++ )
 	{
 		if( mScrollbar[i]->handleKeyHere(key, mask) )
 		{
diff --git a/indra/llui/llscrollcontainer.h b/indra/llui/llscrollcontainer.h
index d87c95b3d7..f9ce4a74ef 100644
--- a/indra/llui/llscrollcontainer.h
+++ b/indra/llui/llscrollcontainer.h
@@ -56,7 +56,6 @@ class LLScrollContainer : public LLUICtrl
 public:
 	// Note: vertical comes before horizontal because vertical
 	// scrollbars have priority for mouse and keyboard events.
-	enum SCROLL_ORIENTATION { VERTICAL, HORIZONTAL, SCROLLBAR_COUNT };
 
 	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
 	{
@@ -126,7 +125,7 @@ private:
 	void updateScroll();
 	void calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const;
 
-	LLScrollbar* mScrollbar[SCROLLBAR_COUNT];
+	LLScrollbar* mScrollbar[ORIENTATION_COUNT];
 	S32			mSize;
 	BOOL		mIsOpaque;
 	LLUIColor	mBackgroundColor;
diff --git a/indra/llui/llslider.h b/indra/llui/llslider.h
index 700c17ea3e..3b492d8182 100644
--- a/indra/llui/llslider.h
+++ b/indra/llui/llslider.h
@@ -34,8 +34,6 @@
 class LLSlider : public LLF32UICtrl
 {
 public:
-	enum ORIENTATION { HORIZONTAL, VERTICAL };
-
 	struct Params : public LLInitParam::Block<Params, LLF32UICtrl::Params>
 	{
 		Optional<std::string> orientation;
@@ -98,7 +96,7 @@ private:
 	LLPointer<LLUIImage>	mTrackHighlightHorizontalImage;
 	LLPointer<LLUIImage>	mTrackHighlightVerticalImage;
 
-	const ORIENTATION	mOrientation;
+	const EOrientation	mOrientation;
 
 	LLRect		mThumbRect;
 	LLUIColor	mTrackColor;
diff --git a/indra/llui/llstatbar.cpp b/indra/llui/llstatbar.cpp
index 04cce7878e..cda40aac72 100644
--- a/indra/llui/llstatbar.cpp
+++ b/indra/llui/llstatbar.cpp
@@ -34,8 +34,9 @@
 #include "llgl.h"
 #include "llfontgl.h"
 
-#include "llstat.h"
 #include "lluictrlfactory.h"
+#include "lltracerecording.h"
+#include "llcriticaldamp.h"
 
 ///////////////////////////////////////////////////////////////////////////////////
 
@@ -45,17 +46,25 @@ LLStatBar::LLStatBar(const Params& p)
 	  mUnitLabel(p.unit_label),
 	  mMinBar(p.bar_min),
 	  mMaxBar(p.bar_max),
-	  mStatp(LLStat::getStat(p.stat)),
+	  mCurMaxBar(p.bar_max),
+	  mCountFloatp(LLTrace::CountStatHandle<>::getInstance(p.stat)),
+	  mCountIntp(LLTrace::CountStatHandle<S64>::getInstance(p.stat)),
+	  mMeasurementFloatp(LLTrace::MeasurementStatHandle<>::getInstance(p.stat)),
+	  mMeasurementIntp(LLTrace::MeasurementStatHandle<S64>::getInstance(p.stat)),
 	  mTickSpacing(p.tick_spacing),
 	  mLabelSpacing(p.label_spacing),
 	  mPrecision(p.precision),
 	  mUpdatesPerSec(p.update_rate),
+	  mUnitScale(p.unit_scale),
+	  mNumFrames(p.num_frames),
+	  mMaxHeight(p.max_height),
 	  mPerSec(p.show_per_sec),
 	  mDisplayBar(p.show_bar),
 	  mDisplayHistory(p.show_history),
-	  mDisplayMean(p.show_mean)
-{
-}
+	  mDisplayMean(p.show_mean),
+	  mOrientation(p.orientation),
+	  mScaleRange(p.scale_range)
+{}
 
 BOOL LLStatBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
@@ -79,34 +88,84 @@ BOOL LLStatBar::handleMouseDown(S32 x, S32 y, MASK mask)
 	LLView* parent = getParent();
 	parent->reshape(parent->getRect().getWidth(), parent->getRect().getHeight(), FALSE);
 
-	return FALSE;
+	return TRUE;
 }
 
 void LLStatBar::draw()
 {
-	if (!mStatp)
+	F32 current = 0.f, 
+		min = 0.f, 
+		max = 0.f,
+		mean = 0.f;
+
+	S32 num_samples = 0;
+	LLTrace::PeriodicRecording& frame_recording = LLTrace::get_frame_recording();
+
+	if (mCountFloatp)
 	{
-//		llinfos << "No stats for statistics bar!" << llendl;
-		return;
+		LLTrace::Recording& last_frame_recording = frame_recording.getLastRecordingPeriod(); 
+
+		if (mPerSec)
+		{
+			current = last_frame_recording.getPerSec(*mCountFloatp);
+			min = frame_recording.getPeriodMinPerSec(*mCountFloatp);
+			max = frame_recording.getPeriodMaxPerSec(*mCountFloatp);
+			mean = frame_recording.getPeriodMeanPerSec(*mCountFloatp);
+			num_samples = frame_recording.getTotalRecording().getSampleCount(*mCountFloatp);
+		}
+		else
+		{
+			current = last_frame_recording.getSum(*mCountFloatp);
+			min = frame_recording.getPeriodMin(*mCountFloatp);
+			max = frame_recording.getPeriodMax(*mCountFloatp);
+			mean = frame_recording.getPeriodMean(*mCountFloatp);
+			num_samples = frame_recording.getTotalRecording().getSampleCount(*mCountFloatp);
+		}
 	}
+	else if (mCountIntp)
+	{
+		LLTrace::Recording& last_frame_recording = frame_recording.getLastRecordingPeriod(); 
 
-	// Get the values.
-	F32 current, min, max, mean;
-	if (mPerSec)
+		if (mPerSec)
+		{
+			current = last_frame_recording.getPerSec(*mCountIntp);
+			min = frame_recording.getPeriodMinPerSec(*mCountIntp);
+			max = frame_recording.getPeriodMaxPerSec(*mCountIntp);
+			mean = frame_recording.getPeriodMeanPerSec(*mCountIntp);
+			num_samples = frame_recording.getTotalRecording().getSampleCount(*mCountIntp);
+		}
+		else
+		{
+			current = last_frame_recording.getSum(*mCountIntp);
+			min = frame_recording.getPeriodMin(*mCountIntp);
+			max = frame_recording.getPeriodMax(*mCountIntp);
+			mean = frame_recording.getPeriodMean(*mCountIntp);
+			num_samples = frame_recording.getTotalRecording().getSampleCount(*mCountIntp);
+		}
+	}
+	else if (mMeasurementFloatp)
 	{
-		current = mStatp->getCurrentPerSec();
-		min = mStatp->getMinPerSec();
-		max = mStatp->getMaxPerSec();
-		mean = mStatp->getMeanPerSec();
+		LLTrace::Recording& recording = frame_recording.getTotalRecording();
+		current = recording.getLastValue(*mMeasurementFloatp);
+		min = recording.getMin(*mMeasurementFloatp);
+		max = recording.getMax(*mMeasurementFloatp);
+		mean = recording.getMean(*mMeasurementFloatp);
+		num_samples = frame_recording.getTotalRecording().getSampleCount(*mMeasurementFloatp);
 	}
-	else
+	else if (mMeasurementIntp)
 	{
-		current = mStatp->getCurrent();
-		min = mStatp->getMin();
-		max = mStatp->getMax();
-		mean = mStatp->getMean();
+		LLTrace::Recording& recording = frame_recording.getTotalRecording();
+		current = recording.getLastValue(*mMeasurementIntp);
+		min = recording.getMin(*mMeasurementIntp);
+		max = recording.getMax(*mMeasurementIntp);
+		mean = recording.getMean(*mMeasurementIntp);
+		num_samples = frame_recording.getTotalRecording().getSampleCount(*mMeasurementIntp);
 	}
 
+	current *= mUnitScale;
+	min *= mUnitScale;
+	max *= mUnitScale;
+	mean *= mUnitScale;
 
 	if ((mUpdatesPerSec == 0.f) || (mUpdateTimer.getElapsedTimeF32() > 1.f/mUpdatesPerSec) || (mValue == 0.f))
 	{
@@ -121,15 +180,41 @@ void LLStatBar::draw()
 		mUpdateTimer.reset();
 	}
 
-	S32 width = getRect().getWidth() - 40;
-	S32 max_width = width;
-	S32 bar_top = getRect().getHeight() - 15; // 16 pixels from top.
-	S32 bar_height = bar_top - 20;
-	S32 tick_height = 4;
-	S32 tick_width = 1;
-	S32 left, top, right, bottom;
+	S32 bar_top, bar_left, bar_right, bar_bottom;
+	if (mOrientation == HORIZONTAL)
+	{
+		bar_top = llmax(5, getRect().getHeight() - 15); 
+		bar_left = 0;
+		bar_right = getRect().getWidth() - 40;
+		bar_bottom = llmin(bar_top - 5, 0);
+	}
+	else // VERTICAL
+	{
+		bar_top = llmax(5, getRect().getHeight() - 15); 
+		bar_left = 0;
+		bar_right = getRect().getWidth();
+		bar_bottom = llmin(bar_top - 5, 20);
+	}
+	const S32 tick_length = 4;
+	const S32 tick_width = 1;
+
+	if (mScaleRange && num_samples)
+	{
+		F32 cur_max = mLabelSpacing;
+		while(max > cur_max)
+		{
+			cur_max += mLabelSpacing;
+		}
+		mCurMaxBar = LLSmoothInterpolation::lerp(mCurMaxBar, cur_max, 0.05f);
+	}
+	else
+	{
+		mCurMaxBar = mMaxBar;
+	}
 
-	F32 value_scale = max_width/(mMaxBar - mMinBar);
+	F32 value_scale = (mOrientation == HORIZONTAL) 
+					? (bar_top - bar_bottom)/(mCurMaxBar - mMinBar)
+					: (bar_right - bar_left)/(mCurMaxBar - mMinBar);
 
 	LLFontGL::getFontMonospace()->renderUTF8(mLabel, 0, 0, getRect().getHeight(), LLColor4(1.f, 1.f, 1.f, 1.f),
 											 LLFontGL::LEFT, LLFontGL::TOP);
@@ -148,114 +233,230 @@ void LLStatBar::draw()
 	}
 
 	// Draw the value.
-	LLFontGL::getFontMonospace()->renderUTF8(value_str, 0, width, getRect().getHeight(), 
-											 LLColor4(1.f, 1.f, 1.f, 0.5f),
-											 LLFontGL::RIGHT, LLFontGL::TOP);
+	if (mOrientation == HORIZONTAL)
+	{
+		LLFontGL::getFontMonospace()->renderUTF8(value_str, 0, bar_right, getRect().getHeight(), 
+			LLColor4(1.f, 1.f, 1.f, 0.5f),
+			LLFontGL::RIGHT, LLFontGL::TOP);
+	}
+	else
+	{
+		LLFontGL::getFontMonospace()->renderUTF8(value_str, 0, bar_right, getRect().getHeight(), 
+			LLColor4(1.f, 1.f, 1.f, 0.5f),
+			LLFontGL::RIGHT, LLFontGL::TOP);
+	}
 
 	value_format = llformat( "%%.%df", mPrecision);
-	if (mDisplayBar)
+	if (mDisplayBar && (mCountFloatp || mCountIntp || mMeasurementFloatp || mMeasurementIntp))
 	{
 		std::string tick_label;
 
 		// Draw the tick marks.
-		F32 tick_value;
-		top = bar_top;
-		bottom = bar_top - bar_height - tick_height/2;
-
 		LLGLSUIDefault gls_ui;
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
-		for (tick_value = mMinBar; tick_value <= mMaxBar; tick_value += mTickSpacing)
+		for (F32 tick_value = mMinBar + mLabelSpacing; tick_value <= mCurMaxBar; tick_value += mTickSpacing)
 		{
-			left = llfloor((tick_value - mMinBar)*value_scale);
-			right = left + tick_width;
-			gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 1.f, 1.f, 0.1f));
+			const S32 begin = llfloor((tick_value - mMinBar)*value_scale);
+			const S32 end = begin + tick_width;
+			if (mOrientation == HORIZONTAL)
+			{
+				gl_rect_2d(bar_left, end, bar_right - tick_length/2, begin, LLColor4(1.f, 1.f, 1.f, 0.1f));
+			}
+			else
+			{
+				gl_rect_2d(begin, bar_top, end, bar_bottom - tick_length/2, LLColor4(1.f, 1.f, 1.f, 0.1f));
+			}
 		}
 
 		// Draw the tick labels (and big ticks).
-		bottom = bar_top - bar_height - tick_height;
-		for (tick_value = mMinBar; tick_value <= mMaxBar; tick_value += mLabelSpacing)
+		for (F32 tick_value = mMinBar + mLabelSpacing; tick_value <= mCurMaxBar; tick_value += mLabelSpacing)
 		{
-			left = llfloor((tick_value - mMinBar)*value_scale);
-			right = left + tick_width;
-			gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 1.f, 1.f, 0.25f));
-
+			const S32 begin = llfloor((tick_value - mMinBar)*value_scale);
+			const S32 end = begin + tick_width;
 			tick_label = llformat( value_format.c_str(), tick_value);
+
 			// draw labels for the tick marks
-			LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, left - 1, bar_top - bar_height - tick_height,
-													 LLColor4(1.f, 1.f, 1.f, 0.5f),
-													 LLFontGL::LEFT, LLFontGL::TOP);
+			if (mOrientation == HORIZONTAL)
+			{
+				gl_rect_2d(bar_left, end, bar_right - tick_length, begin, LLColor4(1.f, 1.f, 1.f, 0.25f));
+				LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, bar_right, begin,
+					LLColor4(1.f, 1.f, 1.f, 0.5f),
+					LLFontGL::LEFT, LLFontGL::VCENTER);
+			}
+			else
+			{
+				gl_rect_2d(begin, bar_top, end, bar_bottom - tick_length, LLColor4(1.f, 1.f, 1.f, 0.25f));
+				LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, begin - 1, bar_bottom - tick_length,
+					LLColor4(1.f, 1.f, 1.f, 0.5f),
+					LLFontGL::RIGHT, LLFontGL::TOP);
+			}
 		}
 
-		// Now, draw the bars
-		top = bar_top;
-		bottom = bar_top - bar_height;
-
 		// draw background bar.
-		left = 0;
-		right = width;
-		gl_rect_2d(left, top, right, bottom, LLColor4(0.f, 0.f, 0.f, 0.25f));
+		gl_rect_2d(bar_left, bar_top, bar_right, bar_bottom, LLColor4(0.f, 0.f, 0.f, 0.25f));
 
-		if (mStatp->getNumValues() == 0)
+		if (frame_recording.getNumPeriods() == 0)
 		{
 			// No data, don't draw anything...
 			return;
 		}
+
 		// draw min and max
-		left = (S32) ((min - mMinBar) * value_scale);
+		S32 begin = (S32) ((min - mMinBar) * value_scale);
 
-		if (left < 0)
+		if (begin < 0)
 		{
-			left = 0;
+			begin = 0;
 			llwarns << "Min:" << min << llendl;
 		}
 
-		right = (S32) ((max - mMinBar) * value_scale);
-		gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 0.f, 0.f, 0.25f));
+		S32 end = (S32) ((max - mMinBar) * value_scale);
+		if (mOrientation == HORIZONTAL)
+		{
+			gl_rect_2d(bar_left, end, bar_right, begin, LLColor4(1.f, 0.f, 0.f, 0.25f));
+		}
+		else // VERTICAL
+		{
+			gl_rect_2d(begin, bar_top, end, bar_bottom, LLColor4(1.f, 0.f, 0.f, 0.25f));
+		}
+
+		F32 span = (mOrientation == HORIZONTAL)
+					? (bar_right - bar_left)
+					: (bar_top - bar_bottom);
 
-		S32 num_values = mStatp->getNumValues() - 1;
-		if (mDisplayHistory)
+		if (mDisplayHistory && (mCountFloatp || mCountIntp || mMeasurementFloatp || mMeasurementIntp))
 		{
+			const S32 num_values = frame_recording.getNumPeriods() - 1;
+			F32 begin = 0;
+			F32 end = 0;
 			S32 i;
-			for (i = 0; i < num_values; i++)
+			gGL.color4f( 1.f, 0.f, 0.f, 1.f );
+			gGL.begin( LLRender::QUADS );
+			const S32 max_frame = llmin(mNumFrames, num_values);
+			U32 num_samples = 0;
+			for (i = 1; i <= max_frame; i++)
 			{
-				if (i == mStatp->getNextBin())
+				F32 offset = ((F32)i / (F32)mNumFrames) * span;
+				LLTrace::Recording& recording = frame_recording.getPrevRecordingPeriod(i);
+				if (mPerSec)
 				{
-					continue;
+					if (mCountFloatp)
+					{
+						begin = ((recording.getPerSec(*mCountFloatp)  - mMinBar) * value_scale);
+						end = ((recording.getPerSec(*mCountFloatp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mCountFloatp);
+					}
+					else if (mCountIntp)
+					{
+						begin = ((recording.getPerSec(*mCountIntp)  - mMinBar) * value_scale);
+						end = ((recording.getPerSec(*mCountIntp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mCountIntp);
+					}
+					else if (mMeasurementFloatp)
+					{
+						//rate isn't defined for measurement stats, so use mean
+						begin = ((recording.getMean(*mMeasurementFloatp)  - mMinBar) * value_scale);
+						end = ((recording.getMean(*mMeasurementFloatp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mMeasurementFloatp);
+					}
+					else if (mMeasurementIntp)
+					{
+						//rate isn't defined for measurement stats, so use mean
+						begin = ((recording.getMean(*mMeasurementIntp)  - mMinBar) * value_scale);
+						end = ((recording.getMean(*mMeasurementIntp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mMeasurementIntp);
+					}
 				}
-				if (mPerSec)
+				else
 				{
-					left = (S32)((mStatp->getPrevPerSec(i) - mMinBar) * value_scale);
-					right = (S32)((mStatp->getPrevPerSec(i) - mMinBar) * value_scale) + 1;
-					gl_rect_2d(left, bottom+i+1, right, bottom+i, LLColor4(1.f, 0.f, 0.f, 1.f));
+					if (mCountFloatp)
+					{
+						begin = ((recording.getSum(*mCountFloatp)  - mMinBar) * value_scale);
+						end = ((recording.getSum(*mCountFloatp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mCountFloatp);
+					}
+					else if (mCountIntp)
+					{
+						begin = ((recording.getSum(*mCountIntp)  - mMinBar) * value_scale);
+						end = ((recording.getSum(*mCountIntp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mCountIntp);
+					}
+					else if (mMeasurementFloatp)
+					{
+						begin = ((recording.getMean(*mMeasurementFloatp)  - mMinBar) * value_scale);
+						end = ((recording.getMean(*mMeasurementFloatp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mMeasurementFloatp);
+					}
+					else if (mMeasurementIntp)
+					{
+						begin = ((recording.getMean(*mMeasurementIntp)  - mMinBar) * value_scale);
+						end = ((recording.getMean(*mMeasurementIntp)  - mMinBar) * value_scale) + 1;
+						num_samples = recording.getSampleCount(*mMeasurementIntp);
+					}
+				}
+				
+				if (!num_samples) continue;
+
+				if (mOrientation == HORIZONTAL)
+				{
+					gGL.vertex2f((F32)bar_right - offset, end);
+					gGL.vertex2f((F32)bar_right - offset, begin);
+					gGL.vertex2f((F32)bar_right - offset - 1.f, begin);
+					gGL.vertex2f((F32)bar_right - offset - 1.f, end);
 				}
 				else
 				{
-					left = (S32)((mStatp->getPrev(i) - mMinBar) * value_scale);
-					right = (S32)((mStatp->getPrev(i) - mMinBar) * value_scale) + 1;
-					gl_rect_2d(left, bottom+i+1, right, bottom+i, LLColor4(1.f, 0.f, 0.f, 1.f));
+					gGL.vertex2i(begin, (F32)bar_bottom+offset+1.f);
+					gGL.vertex2i(begin, (F32)bar_bottom+offset);
+					gGL.vertex2i(end, (F32)bar_bottom+offset);
+					gGL.vertex2i(end, (F32)bar_bottom+offset+1.f);
 				}
 			}
+			gGL.end();
 		}
 		else
 		{
+			S32 begin = (S32) ((current - mMinBar) * value_scale) - 1;
+			S32 end = (S32) ((current - mMinBar) * value_scale) + 1;
 			// draw current
-			left = (S32) ((current - mMinBar) * value_scale) - 1;
-			right = (S32) ((current - mMinBar) * value_scale) + 1;
-			gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 0.f, 0.f, 1.f));
+			if (mOrientation == HORIZONTAL)
+			{
+				gl_rect_2d(bar_left, end, bar_right, begin, LLColor4(1.f, 0.f, 0.f, 1.f));
+			}
+			else
+			{
+				gl_rect_2d(begin, bar_top, end, bar_bottom, LLColor4(1.f, 0.f, 0.f, 1.f));
+			}
 		}
 
 		// draw mean bar
-		top = bar_top + 2;
-		bottom = bar_top - bar_height - 2;
-		left = (S32) ((mean - mMinBar) * value_scale) - 1;
-		right = (S32) ((mean - mMinBar) * value_scale) + 1;
-		gl_rect_2d(left, top, right, bottom, LLColor4(0.f, 1.f, 0.f, 1.f));
+		{
+			const S32 begin = (S32) ((mean - mMinBar) * value_scale) - 1;
+			const S32 end = (S32) ((mean - mMinBar) * value_scale) + 1;
+			if (mOrientation == HORIZONTAL)
+			{
+				gl_rect_2d(bar_left - 2, begin, bar_right + 2, end, LLColor4(0.f, 1.f, 0.f, 1.f));
+			}
+			else
+			{
+				gl_rect_2d(begin, bar_top + 2, end, bar_bottom - 2, LLColor4(0.f, 1.f, 0.f, 1.f));
+			}
+		}
 	}
 	
 	LLView::draw();
 }
 
+void LLStatBar::setStat(const std::string& stat_name)
+{
+	mCountFloatp = LLTrace::CountStatHandle<>::getInstance(stat_name);
+	mCountIntp = LLTrace::CountStatHandle<S64>::getInstance(stat_name);
+	mMeasurementFloatp = LLTrace::MeasurementStatHandle<>::getInstance(stat_name);
+	mMeasurementIntp = LLTrace::MeasurementStatHandle<S64>::getInstance(stat_name);
+}
+
+
 void LLStatBar::setRange(F32 bar_min, F32 bar_max, F32 tick_spacing, F32 label_spacing)
 {
 	mMinBar = bar_min;
@@ -272,7 +473,14 @@ LLRect LLStatBar::getRequiredRect()
 	{
 		if (mDisplayHistory)
 		{
-			rect.mTop = 35 + mStatp->getNumBins();
+			if (mOrientation == HORIZONTAL)
+			{
+				rect.mTop = mMaxHeight;
+			}
+			else
+			{
+				rect.mTop = 35 + llmin(mMaxHeight, llmin(mNumFrames, (S32)LLTrace::get_frame_recording().getNumPeriods()));
+			}
 		}
 		else
 		{
diff --git a/indra/llui/llstatbar.h b/indra/llui/llstatbar.h
index 513fff3234..74a3ebde2f 100644
--- a/indra/llui/llstatbar.h
+++ b/indra/llui/llstatbar.h
@@ -29,27 +29,37 @@
 
 #include "llview.h"
 #include "llframetimer.h"
-
-class LLStat;
+#include "lltracerecording.h"
 
 class LLStatBar : public LLView
 {
 public:
+
 	struct Params : public LLInitParam::Block<Params, LLView::Params>
 	{
-		Optional<std::string> label;
-		Optional<std::string> unit_label;
-		Optional<F32> bar_min;
-		Optional<F32> bar_max;
-		Optional<F32> tick_spacing;
-		Optional<F32> label_spacing;
-		Optional<U32> precision;
-		Optional<F32> update_rate;
-		Optional<bool> show_per_sec;
-		Optional<bool> show_bar;
-		Optional<bool> show_history;
-		Optional<bool> show_mean;
-		Optional<std::string> stat;
+		Optional<std::string>	label,
+								unit_label;
+
+		Optional<F32>			bar_min,
+								bar_max,
+								tick_spacing,
+								label_spacing,
+								update_rate,
+								unit_scale;
+
+		Optional<U32>			precision;
+
+		Optional<bool>			show_per_sec,
+								show_bar,
+								show_history,
+								show_mean,
+								scale_range;
+
+		Optional<S32>			num_frames,
+								max_height;
+		Optional<std::string>	stat;
+		Optional<EOrientation>	orientation;
+
 		Params()
 			: label("label"),
 			  unit_label("unit_label"),
@@ -59,11 +69,16 @@ public:
 			  label_spacing("label_spacing", 10.0f),
 			  precision("precision", 0),
 			  update_rate("update_rate", 5.0f),
-			  show_per_sec("show_per_sec", TRUE),
-			  show_bar("show_bar", TRUE),
-			  show_history("show_history", FALSE),
-			  show_mean("show_mean", TRUE),
-			  stat("stat")
+			  unit_scale("unit_scale", 1.f),
+			  show_per_sec("show_per_sec", true),
+			  show_bar("show_bar", true),
+			  show_history("show_history", false),
+			  show_mean("show_mean", true),
+			  scale_range("scale_range", true),
+			  num_frames("num_frames", 300),
+			  max_height("max_height", 200),
+			  stat("stat"),
+			  orientation("orientation", VERTICAL)
 		{
 			changeDefault(follows.flags, FOLLOWS_TOP | FOLLOWS_LEFT);
 		}
@@ -73,30 +88,40 @@ public:
 	virtual void draw();
 	virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
 
-	void setStat(LLStat* stat) { mStatp = stat; }
+	void setStat(const std::string& stat_name);
+
 	void setRange(F32 bar_min, F32 bar_max, F32 tick_spacing, F32 label_spacing);
 	void getRange(F32& bar_min, F32& bar_max) { bar_min = mMinBar; bar_max = mMaxBar; }
 	
 	/*virtual*/ LLRect getRequiredRect();	// Return the height of this object, given the set options.
 
 private:
-	F32 mMinBar;
-	F32 mMaxBar;
-	F32 mTickSpacing;
-	F32 mLabelSpacing;
-	U32 mPrecision;
-	F32 mUpdatesPerSec;
-	BOOL mPerSec;				// Use the per sec stats.
-	BOOL mDisplayBar;			// Display the bar graph.
-	BOOL mDisplayHistory;
-	BOOL mDisplayMean;			// If true, display mean, if false, display current value
-
-	LLStat* mStatp;
+	F32          mMinBar;
+	F32          mMaxBar;
+	F32			 mCurMaxBar;
+	F32          mTickSpacing;
+	F32          mLabelSpacing;
+	U32          mPrecision;
+	F32          mUpdatesPerSec;
+	F32          mUnitScale;
+	S32			 mNumFrames;
+	S32			 mMaxHeight;
+	bool         mPerSec;				// Use the per sec stats.
+	bool         mDisplayBar;			// Display the bar graph.
+	bool         mDisplayHistory;
+	bool         mDisplayMean;			// If true, display mean, if false, display current value
+	bool		 mScaleRange;
+	EOrientation mOrientation;
+
+	LLTrace::TraceType<LLTrace::CountAccumulator<F64> >*       mCountFloatp;
+	LLTrace::TraceType<LLTrace::CountAccumulator<S64> >*       mCountIntp;
+	LLTrace::TraceType<LLTrace::MeasurementAccumulator<F64> >* mMeasurementFloatp;
+	LLTrace::TraceType<LLTrace::MeasurementAccumulator<S64> >* mMeasurementIntp;
 
 	LLFrameTimer mUpdateTimer;
-	LLUIString mLabel;
-	std::string mUnitLabel;
-	F32 mValue;
+	LLUIString   mLabel;
+	std::string  mUnitLabel;
+	F32          mValue;
 };
 
 #endif
diff --git a/indra/llui/llstatgraph.cpp b/indra/llui/llstatgraph.cpp
index e44887ebf0..bdb378c9c5 100644
--- a/indra/llui/llstatgraph.cpp
+++ b/indra/llui/llstatgraph.cpp
@@ -32,48 +32,65 @@
 
 #include "llmath.h"
 #include "llui.h"
-#include "llstat.h"
 #include "llgl.h"
 #include "llglheaders.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
 //#include "llviewercontrol.h"
 
 ///////////////////////////////////////////////////////////////////////////////////
 
-LLStatGraph::LLStatGraph(const LLView::Params& p)
-:	LLView(p)
+LLStatGraph::LLStatGraph(const Params& p)
+:	LLView(p),
+	mMin(p.min),
+	mMax(p.max),
+	mPerSec(true),
+	mPrecision(p.precision),
+	mValue(p.value),
+	mNewStatFloatp(p.stat.count_stat_float),
+	mNewStatIntp(p.stat.count_stat_int)
 {
-	mStatp = NULL;
 	setToolTip(p.name());
-	mNumThresholds = 3;
-	mThresholdColors[0] = LLColor4(0.f, 1.f, 0.f, 1.f);
-	mThresholdColors[1] = LLColor4(1.f, 1.f, 0.f, 1.f);
-	mThresholdColors[2] = LLColor4(1.f, 0.f, 0.f, 1.f);
-	mThresholdColors[3] = LLColor4(1.f, 0.f, 0.f, 1.f);
-	mThresholds[0] = 50.f;
-	mThresholds[1] = 75.f;
-	mThresholds[2] = 100.f;
-	mMin = 0.f;
-	mMax = 125.f;
-	mPerSec = TRUE;
-	mValue = 0.f;
-	mPrecision = 0;
+
+	for(LLInitParam::ParamIterator<ThresholdParams>::const_iterator it = p.thresholds.threshold.begin(), end_it = p.thresholds.threshold.end();
+		it != end_it;
+		++it)
+	{
+		mThresholds.push_back(Threshold(it->value(), it->color));
+	}
 }
 
 void LLStatGraph::draw()
 {
 	F32 range, frac;
 	range = mMax - mMin;
-	if (mStatp)
+	if (mNewStatFloatp)
+	{
+		LLTrace::Recording& recording = LLTrace::get_frame_recording().getLastRecordingPeriod();
+
+		if (mPerSec)
+		{
+			mValue = recording.getPerSec(*mNewStatFloatp);
+		}
+		else
+		{
+			mValue = recording.getSum(*mNewStatFloatp);
+		}
+	}
+	else if (mNewStatIntp)
 	{
+		LLTrace::Recording& recording = LLTrace::get_frame_recording().getLastRecordingPeriod();
+
 		if (mPerSec)
 		{
-			mValue = mStatp->getMeanPerSec();
+			mValue = recording.getPerSec(*mNewStatIntp);
 		}
 		else
 		{
-			mValue = mStatp->getMean();
+			mValue = recording.getSum(*mNewStatIntp);
 		}
 	}
+
 	frac = (mValue - mMin) / range;
 	frac = llmax(0.f, frac);
 	frac = llmin(1.f, frac);
@@ -91,19 +108,13 @@ void LLStatGraph::draw()
 
 	LLColor4 color;
 
-	S32 i;
-	for (i = 0; i < mNumThresholds - 1; i++)
+	threshold_vec_t::iterator it = std::lower_bound(mThresholds.begin(), mThresholds.end(), Threshold(mValue / mMax, LLUIColor()));
+
+	if (it != mThresholds.begin())
 	{
-		if (mThresholds[i] > mValue)
-		{
-			break;
-		}
+		it--;
 	}
 
-	//gl_drop_shadow(0,  getRect().getHeight(), getRect().getWidth(), 0,
-	//				LLUIColorTable::instance().getColor("ColorDropShadow"), 
-	//				(S32) gSavedSettings.getF32("DropShadowFloater") );
-
 	color = LLUIColorTable::instance().getColor( "MenuDefaultBgColor" );
 	gGL.color4fv(color.mV);
 	gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, TRUE);
@@ -111,16 +122,11 @@ void LLStatGraph::draw()
 	gGL.color4fv(LLColor4::black.mV);
 	gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, FALSE);
 	
-	color = mThresholdColors[i];
+	color = it->mColor;
 	gGL.color4fv(color.mV);
 	gl_rect_2d(1, llround(frac*getRect().getHeight()), getRect().getWidth() - 1, 0, TRUE);
 }
 
-void LLStatGraph::setValue(const LLSD& value)
-{
-	mValue = (F32)value.asReal();
-}
-
 void LLStatGraph::setMin(const F32 min)
 {
 	mMin = min;
@@ -131,27 +137,3 @@ void LLStatGraph::setMax(const F32 max)
 	mMax = max;
 }
 
-void LLStatGraph::setStat(LLStat *statp)
-{
-	mStatp = statp;
-}
-
-void LLStatGraph::setLabel(const std::string& label)
-{
-	mLabel = label;
-}
-
-void LLStatGraph::setUnits(const std::string& units)
-{
-	mUnits = units;
-}
-
-void LLStatGraph::setPrecision(const S32 precision)
-{
-	mPrecision = precision;
-}
-
-void LLStatGraph::setThreshold(const S32 i, F32 value)
-{
-	mThresholds[i] = value;
-}
diff --git a/indra/llui/llstatgraph.h b/indra/llui/llstatgraph.h
index 757525e232..c9e33ed902 100644
--- a/indra/llui/llstatgraph.h
+++ b/indra/llui/llstatgraph.h
@@ -30,29 +30,86 @@
 #include "llview.h"
 #include "llframetimer.h"
 #include "v4color.h"
-
-class LLStat;
+#include "lltrace.h"
 
 class LLStatGraph : public LLView
 {
 public:
-	LLStatGraph(const LLView::Params&);
+	struct ThresholdParams : public LLInitParam::Block<ThresholdParams>
+	{
+		Mandatory<F32>	value;
+		Optional<LLUIColor>	color;
 
-	virtual void draw();
+		ThresholdParams()
+		:	value("value"),
+			color("color", LLColor4::white)
+		{}
+	};
+
+	struct Thresholds : public LLInitParam::Block<Thresholds>
+	{
+		Multiple<ThresholdParams> threshold;
+
+		Thresholds()
+		:	threshold("threshold")
+		{}
+	};
+
+	struct StatParams : public LLInitParam::ChoiceBlock<StatParams>
+	{
+		Alternative<LLTrace::TraceType<LLTrace::CountAccumulator<F64> >* >			count_stat_float;
+		Alternative<LLTrace::TraceType<LLTrace::CountAccumulator<S64> >* >			count_stat_int;
+		Alternative<LLTrace::TraceType<LLTrace::MeasurementAccumulator<F64> >* >	measurement_stat_float;
+		Alternative<LLTrace::TraceType<LLTrace::MeasurementAccumulator<S64> >* >	measurement_stat_int;
+	};
+
+	struct Params : public LLInitParam::Block<Params, LLView::Params>
+	{
+		Mandatory<StatParams>	stat;
+		Optional<std::string>	label,
+								units;
+		Optional<S32>			precision;
+		Optional<F32>			min,
+								max;
+		Optional<bool>			per_sec;
+		Optional<F32>			value;
+
+		Optional<Thresholds>	thresholds;
+
+		Params()
+		:	stat("stat"),
+			label("label"),
+			units("units"),
+			precision("precision", 0),
+			min("min", 0.f),
+			max("max", 125.f),
+			per_sec("per_sec", true),
+			value("value", 0.f),
+			thresholds("thresholds")
+		{
+			Thresholds _thresholds;
+			_thresholds.threshold.add(ThresholdParams().value(0.f).color(LLColor4::green))
+								.add(ThresholdParams().value(0.33f).color(LLColor4::yellow))
+								.add(ThresholdParams().value(0.5f).color(LLColor4::red))
+								.add(ThresholdParams().value(0.75f).color(LLColor4::red));
+			thresholds = _thresholds;
+		}
+	};
+	LLStatGraph(const Params&);
 
-	void setLabel(const std::string& label);
-	void setUnits(const std::string& units);
-	void setPrecision(const S32 precision);
-	void setStat(LLStat *statp);
-	void setThreshold(const S32 i, F32 value);
 	void setMin(const F32 min);
 	void setMax(const F32 max);
 
+	virtual void draw();
+
 	/*virtual*/ void setValue(const LLSD& value);
 	
-	LLStat *mStatp;
-	BOOL mPerSec;
 private:
+	LLTrace::TraceType<LLTrace::CountAccumulator<F64> >*	mNewStatFloatp;
+	LLTrace::TraceType<LLTrace::CountAccumulator<S64> >*	mNewStatIntp;
+
+	BOOL mPerSec;
+
 	F32 mValue;
 
 	F32 mMin;
@@ -62,9 +119,25 @@ private:
 	std::string mUnits;
 	S32 mPrecision; // Num of digits of precision after dot
 
-	S32 mNumThresholds;
-	F32 mThresholds[4];
-	LLColor4 mThresholdColors[4];
+	struct Threshold
+	{
+		Threshold(F32 value, const LLUIColor& color)
+		:	mValue(value),
+			mColor(color)
+		{}
+
+		F32 mValue;
+		LLUIColor mColor;
+		bool operator <(const Threshold& other)
+		{
+			return mValue < other.mValue;
+		}
+	};
+	typedef std::vector<Threshold> threshold_vec_t;
+	threshold_vec_t mThresholds;
+	//S32 mNumThresholds;
+	//F32 mThresholds[4];
+	//LLColor4 mThresholdColors[4];
 };
 
 #endif  // LL_LLSTATGRAPH_H
diff --git a/indra/llui/lltabcontainer.cpp b/indra/llui/lltabcontainer.cpp
index 5fc2cc350d..4df35f77a5 100644
--- a/indra/llui/lltabcontainer.cpp
+++ b/indra/llui/lltabcontainer.cpp
@@ -406,7 +406,7 @@ void LLTabContainer::draw()
 		}
 	}
 
-	setScrollPosPixels((S32)lerp((F32)getScrollPosPixels(), (F32)target_pixel_scroll, LLCriticalDamp::getInterpolant(0.08f)));
+	setScrollPosPixels((S32)lerp((F32)getScrollPosPixels(), (F32)target_pixel_scroll, LLSmoothInterpolation::getInterpolant(0.08f)));
 
 	BOOL has_scroll_arrows = !getTabsHidden() && ((mMaxScrollPos > 0) || (mScrollPosPixels > 0));
 	if (!mIsVertical)
diff --git a/indra/llui/lltextbase.cpp b/indra/llui/lltextbase.cpp
index 3815eec447..680b6ed16d 100644
--- a/indra/llui/lltextbase.cpp
+++ b/indra/llui/lltextbase.cpp
@@ -47,6 +47,8 @@
 const F32	CURSOR_FLASH_DELAY = 1.0f;  // in seconds
 const S32	CURSOR_THICKNESS = 2;
 
+LLTrace::MemStatHandle	LLTextSegment::sMemStat("LLTextSegment");
+
 LLTextBase::line_info::line_info(S32 index_start, S32 index_end, LLRect rect, S32 line_num) 
 :	mDocIndexStart(index_start), 
 	mDocIndexEnd(index_end),
@@ -561,7 +563,7 @@ void LLTextBase::drawText()
 		if ( (mSpellCheckStart != start) || (mSpellCheckEnd != end) )
 		{
 			const LLWString& wstrText = getWText(); 
-			mMisspellRanges.clear();
+			memDisclaim(mMisspellRanges).clear();
 
 			segment_set_t::const_iterator seg_it = getSegIterContaining(start);
 			while (mSegments.end() != seg_it)
@@ -632,6 +634,7 @@ void LLTextBase::drawText()
 
 			mSpellCheckStart = start;
 			mSpellCheckEnd = end;
+			memClaim(mMisspellRanges);
 		}
 	}
 
@@ -890,10 +893,12 @@ void LLTextBase::createDefaultSegment()
 	// ensures that there is always at least one segment
 	if (mSegments.empty())
 	{
+		memDisclaim(mSegments);
 		LLStyleConstSP sp(new LLStyle(getDefaultStyleParams()));
 		LLTextSegmentPtr default_segment = new LLNormalTextSegment( sp, 0, getLength() + 1, *this);
 		mSegments.insert(default_segment);
 		default_segment->linkToDocument(this);
+		memClaim(mSegments);
 	}
 }
 
@@ -904,6 +909,8 @@ void LLTextBase::insertSegment(LLTextSegmentPtr segment_to_insert)
 		return;
 	}
 
+	memDisclaim(mSegments);
+
 	segment_set_t::iterator cur_seg_iter = getSegIterContaining(segment_to_insert->getStart());
 	S32 reflow_start_index = 0;
 
@@ -976,6 +983,7 @@ void LLTextBase::insertSegment(LLTextSegmentPtr segment_to_insert)
 
 	// layout potentially changed
 	needsReflow(reflow_start_index);
+	memClaim(mSegments);
 }
 
 BOOL LLTextBase::handleMouseDown(S32 x, S32 y, MASK mask)
@@ -1271,8 +1279,11 @@ void LLTextBase::replaceWithSuggestion(U32 index)
 			removeStringNoUndo(it->first, it->second - it->first);
 
 			// Insert the suggestion in its place
+			memDisclaim(mSuggestionList);
 			LLWString suggestion = utf8str_to_wstring(mSuggestionList[index]);
 			insertStringNoUndo(it->first, utf8str_to_wstring(mSuggestionList[index]));
+			memClaim(mSuggestionList);
+
 			setCursorPos(it->first + (S32)suggestion.length());
 
 			break;
@@ -1334,7 +1345,7 @@ bool LLTextBase::isMisspelledWord(U32 pos) const
 void LLTextBase::onSpellCheckSettingsChange()
 {
 	// Recheck the spelling on every change
-	mMisspellRanges.clear();
+	memDisclaim(mMisspellRanges).clear();
 	mSpellCheckStart = mSpellCheckEnd = -1;
 }
 
@@ -1593,7 +1604,7 @@ LLRect LLTextBase::getTextBoundingRect()
 
 void LLTextBase::clearSegments()
 {
-	mSegments.clear();
+	memDisclaim(mSegments).clear();
 	createDefaultSegment();
 }
 
@@ -3057,7 +3068,9 @@ void LLNormalTextSegment::setToolTip(const std::string& tooltip)
 		llwarns << "LLTextSegment::setToolTip: cannot replace keyword tooltip." << llendl;
 		return;
 	}
+	memDisclaim(mTooltip);
 	mTooltip = tooltip;
+	memClaim(mTooltip);
 }
 
 bool LLNormalTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
diff --git a/indra/llui/lltextbase.h b/indra/llui/lltextbase.h
index 90b147cee1..2ce15d891a 100644
--- a/indra/llui/lltextbase.h
+++ b/indra/llui/lltextbase.h
@@ -50,7 +50,10 @@ class LLUrlMatch;
 /// includes a start/end offset from the start of the string, a
 /// style to render with, an optional tooltip, etc.
 ///
-class LLTextSegment : public LLRefCount, public LLMouseHandler
+class LLTextSegment 
+:	public LLRefCount, 
+	public LLMouseHandler,
+	public LLTrace::MemTrackable<LLTextSegment>
 {
 public:
 	LLTextSegment(S32 start, S32 end) : mStart(start), mEnd(end){};
@@ -91,10 +94,12 @@ public:
 	/*virtual*/ void			localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const;
 	/*virtual*/ BOOL			hasMouseCapture();
 
-	S32							getStart() const 					{ return mStart; }
-	void						setStart(S32 start)					{ mStart = start; }
-	S32							getEnd() const						{ return mEnd; }
-	void						setEnd( S32 end )					{ mEnd = end; }
+	S32						getStart() const 					{ return mStart; }
+	void					setStart(S32 start)					{ mStart = start; }
+	S32						getEnd() const						{ return mEnd; }
+	void					setEnd( S32 end )					{ mEnd = end; }
+
+	static LLTrace::MemStatHandle sMemStat;
 
 protected:
 	S32				mStart;
diff --git a/indra/llui/lltoolbar.cpp b/indra/llui/lltoolbar.cpp
index 63b7e452d2..13aa21b505 100644
--- a/indra/llui/lltoolbar.cpp
+++ b/indra/llui/lltoolbar.cpp
@@ -42,9 +42,9 @@
 
 namespace LLToolBarEnums
 {
-	LLLayoutStack::ELayoutOrientation getOrientation(SideType sideType)
+	LLView::EOrientation getOrientation(SideType sideType)
 	{
-		LLLayoutStack::ELayoutOrientation orientation = LLLayoutStack::HORIZONTAL;
+		LLView::EOrientation orientation = LLLayoutStack::HORIZONTAL;
 
 		if ((sideType == SIDE_LEFT) || (sideType == SIDE_RIGHT))
 		{
@@ -173,7 +173,7 @@ void LLToolBar::initFromParams(const LLToolBar::Params& p)
 	// Initialize the base object
 	LLUICtrl::initFromParams(p);
 	
-	LLLayoutStack::ELayoutOrientation orientation = getOrientation(p.side);
+	LLView::EOrientation orientation = getOrientation(p.side);
 
 	LLLayoutStack::Params centering_stack_p;
 	centering_stack_p.name = "centering_stack";
@@ -525,7 +525,7 @@ int LLToolBar::getRankFromPosition(S32 x, S32 y)
 	int rank = 0;
 
 	// Convert the toolbar coord into button panel coords
-	LLLayoutStack::ELayoutOrientation orientation = getOrientation(mSideType);
+	LLView::EOrientation orientation = getOrientation(mSideType);
 	S32 button_panel_x = 0;
 	S32 button_panel_y = 0;
 	localPointToOtherView(x, y, &button_panel_x, &button_panel_y, mButtonPanel);
@@ -644,7 +644,7 @@ void LLToolBar::updateLayoutAsNeeded()
 {
 	if (!mNeedsLayout) return;
 
-	LLLayoutStack::ELayoutOrientation orientation = getOrientation(mSideType);
+	LLView::EOrientation orientation = getOrientation(mSideType);
 	
 	// our terminology for orientation-agnostic layout is such that
 	// length refers to a distance in the direction we stack the buttons 
diff --git a/indra/llui/lltoolbar.h b/indra/llui/lltoolbar.h
index 31424a36d4..6936cb37f7 100644
--- a/indra/llui/lltoolbar.h
+++ b/indra/llui/lltoolbar.h
@@ -125,7 +125,7 @@ namespace LLToolBarEnums
 		SIDE_TOP,
 	};
 
-	LLLayoutStack::ELayoutOrientation getOrientation(SideType sideType);
+	LLView::EOrientation getOrientation(SideType sideType);
 }
 
 // NOTE: This needs to occur before Param block declaration for proper compilation.
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index 6d2bc1837c..b9d935847b 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -724,9 +724,14 @@ void gl_draw_rotated_image(S32 x, S32 y, F32 degrees, LLTexture* image, const LL
 	gl_draw_scaled_rotated_image( x, y, image->getWidth(0), image->getHeight(0), degrees, image, color, uv_rect );
 }
 
-void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect)
+void gl_draw_scaled_target(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* target, const LLColor4& color, const LLRectf& uv_rect)
 {
-	if (NULL == image)
+	gl_draw_scaled_rotated_image(x, y, width, height, 0.f, NULL, color, uv_rect, target);
+}
+
+void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect, LLRenderTarget* target)
+{
+	if (!image && !target)
 	{
 		llwarns << "image == NULL; aborting function" << llendl;
 		return;
@@ -734,8 +739,14 @@ void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degre
 
 	LLGLSUIDefault gls_ui;
 
-
-	gGL.getTexUnit(0)->bind(image, true);
+	if(image != NULL)
+	{
+		gGL.getTexUnit(0)->bind(image, true);
+	}
+	else
+	{
+		gGL.getTexUnit(0)->bind(target);
+	}
 
 	gGL.color4fv(color.mV);
 
@@ -788,7 +799,14 @@ void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degre
 
 		LLMatrix3 quat(0.f, 0.f, degrees*DEG_TO_RAD);
 		
-		gGL.getTexUnit(0)->bind(image, true);
+		if(image != NULL)
+		{
+			gGL.getTexUnit(0)->bind(image, true);
+		}
+		else
+		{
+			gGL.getTexUnit(0)->bind(target);
+		}
 
 		gGL.color4fv(color.mV);
 		
@@ -1129,6 +1147,8 @@ void gl_rect_2d_simple( S32 width, S32 height )
 	gGL.end();
 }
 
+static LLFastTimer::DeclareTimer FTM_RENDER_SEGMENTED_RECT ("Render segmented rectangle");
+
 void gl_segmented_rect_2d_tex(const S32 left, 
 							  const S32 top, 
 							  const S32 right, 
@@ -1138,6 +1158,7 @@ void gl_segmented_rect_2d_tex(const S32 left,
 							  const S32 border_size, 
 							  const U32 edges)
 {
+	LLFastTimer _(FTM_RENDER_SEGMENTED_RECT);
 	S32 width = llabs(right - left);
 	S32 height = llabs(top - bottom);
 
@@ -1288,10 +1309,7 @@ void gl_segmented_rect_2d_tex(const S32 left,
 }
 
 //FIXME: rewrite to use scissor?
-void gl_segmented_rect_2d_fragment_tex(const S32 left, 
-									   const S32 top, 
-									   const S32 right, 
-									   const S32 bottom, 
+void gl_segmented_rect_2d_fragment_tex(const LLRect& rect, 
 									   const S32 texture_width, 
 									   const S32 texture_height, 
 									   const S32 border_size, 
@@ -1299,6 +1317,11 @@ void gl_segmented_rect_2d_fragment_tex(const S32 left,
 									   const F32 end_fragment, 
 									   const U32 edges)
 {
+	LLFastTimer _(FTM_RENDER_SEGMENTED_RECT);
+	const S32 left = rect.mLeft;
+	const S32 right = rect.mRight;
+	const S32 top = rect.mTop;
+	const S32 bottom = rect.mBottom;
 	S32 width = llabs(right - left);
 	S32 height = llabs(top - bottom);
 
@@ -1336,9 +1359,9 @@ void gl_segmented_rect_2d_fragment_tex(const S32 left,
 	{
 		if (start_fragment < middle_start)
 		{
-			u_min = (start_fragment / middle_start) * border_uv_scale.mV[VX];
+			u_min = (start_fragment / middle_start)			* border_uv_scale.mV[VX];
 			u_max = llmin(end_fragment / middle_start, 1.f) * border_uv_scale.mV[VX];
-			x_min = (start_fragment / middle_start) * border_width_left;
+			x_min = (start_fragment / middle_start)			* border_width_left;
 			x_max = llmin(end_fragment / middle_start, 1.f) * border_width_left;
 
 			// draw bottom left
@@ -1428,10 +1451,10 @@ void gl_segmented_rect_2d_fragment_tex(const S32 left,
 
 		if (end_fragment > middle_end)
 		{
-			u_min = (1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_uv_scale.mV[VX];
-			u_max = (1.f - ((end_fragment - middle_end) / middle_start)) * border_uv_scale.mV[VX];
-			x_min = width_vec - ((1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_width_right);
-			x_max = width_vec - ((1.f - ((end_fragment - middle_end) / middle_start)) * border_width_right);
+			u_min = 1.f			- ((1.f - llmax(0.f, (start_fragment - middle_end) / middle_start)) * border_uv_scale.mV[VX]);
+			u_max = 1.f			- ((1.f - ((end_fragment - middle_end) / middle_start)) * border_uv_scale.mV[VX]);
+			x_min = width_vec	- ((1.f - llmax(0.f, (start_fragment - middle_end) / middle_start)) * border_width_right);
+			x_max = width_vec	- ((1.f - ((end_fragment - middle_end) / middle_start)) * border_width_right);
 
 			// draw bottom right
 			gGL.texCoord2f(u_min, 0.f);
@@ -1482,6 +1505,7 @@ void gl_segmented_rect_3d_tex(const LLVector2& border_scale, const LLVector3& bo
 							  const LLVector3& border_height, const LLVector3& width_vec, const LLVector3& height_vec,
 							  const U32 edges)
 {
+	LLFastTimer _(FTM_RENDER_SEGMENTED_RECT);
 	LLVector3 left_border_width = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? border_width : LLVector3::zero;
 	LLVector3 right_border_width = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? border_width : LLVector3::zero;
 
diff --git a/indra/llui/llui.h b/indra/llui/llui.h
index c5a12d2b31..dfb9fa60c9 100644
--- a/indra/llui/llui.h
+++ b/indra/llui/llui.h
@@ -58,6 +58,7 @@ class LLUUID;
 class LLWindow;
 class LLView;
 class LLHelp;
+class LLRenderTarget;
 
 // UI colors
 extern const LLColor4 UI_VERTEX_COLOR;
@@ -93,8 +94,9 @@ void gl_washer_segment_2d(F32 outer_radius, F32 inner_radius, F32 start_radians,
 
 void gl_draw_image(S32 x, S32 y, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 void gl_draw_scaled_image(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
+void gl_draw_scaled_target(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* target, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 void gl_draw_rotated_image(S32 x, S32 y, F32 degrees, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
-void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees,LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
+void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees,LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), LLRenderTarget* target = NULL);
 void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLTexture* image, const LLColor4 &color, BOOL solid_color = FALSE, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4 &color, BOOL solid_color = FALSE, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), const LLRectf& scale_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 
@@ -126,7 +128,7 @@ typedef enum e_rounded_edge
 
 
 void gl_segmented_rect_2d_tex(const S32 left, const S32 top, const S32 right, const S32 bottom, const S32 texture_width, const S32 texture_height, const S32 border_size, const U32 edges = ROUNDED_RECT_ALL);
-void gl_segmented_rect_2d_fragment_tex(const S32 left, const S32 top, const S32 right, const S32 bottom, const S32 texture_width, const S32 texture_height, const S32 border_size, const F32 start_fragment, const F32 end_fragment, const U32 edges = ROUNDED_RECT_ALL);
+void gl_segmented_rect_2d_fragment_tex(const LLRect& rect, const S32 texture_width, const S32 texture_height, const S32 border_size, const F32 start_fragment, const F32 end_fragment, const U32 edges = ROUNDED_RECT_ALL);
 void gl_segmented_rect_3d_tex(const LLVector2& border_scale, const LLVector3& border_width, const LLVector3& border_height, const LLVector3& width_vec, const LLVector3& height_vec, U32 edges = ROUNDED_RECT_ALL);
 void gl_segmented_rect_3d_tex_top(const LLVector2& border_scale, const LLVector3& border_width, const LLVector3& border_height, const LLVector3& width_vec, const LLVector3& height_vec);
 
diff --git a/indra/llui/lluictrl.cpp b/indra/llui/lluictrl.cpp
index b9c843e931..08358484ef 100644
--- a/indra/llui/lluictrl.cpp
+++ b/indra/llui/lluictrl.cpp
@@ -118,6 +118,7 @@ LLUICtrl::LLUICtrl(const LLUICtrl::Params& p, const LLViewModelPtr& viewmodel)
 	mDoubleClickSignal(NULL),
 	mTransparencyType(TT_DEFAULT)
 {
+	memClaim(viewmodel.get());
 }
 
 void LLUICtrl::initFromParams(const Params& p)
@@ -940,7 +941,7 @@ boost::signals2::connection LLUICtrl::setCommitCallback( boost::function<void (L
 }
 boost::signals2::connection LLUICtrl::setValidateBeforeCommit( boost::function<bool (const LLSD& data)> cb )
 {
-	if (!mValidateSignal) mValidateSignal = new enable_signal_t();
+	if (!mValidateSignal) mValidateSignal = memClaim(new enable_signal_t());
 	return mValidateSignal->connect(boost::bind(cb, _2));
 }
 
@@ -1003,55 +1004,55 @@ boost::signals2::connection LLUICtrl::setValidateCallback(const EnableCallbackPa
 
 boost::signals2::connection LLUICtrl::setCommitCallback( const commit_signal_t::slot_type& cb ) 
 { 
-	if (!mCommitSignal) mCommitSignal = new commit_signal_t();
+	if (!mCommitSignal) mCommitSignal = memClaim(new commit_signal_t());
 	return mCommitSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setValidateCallback( const enable_signal_t::slot_type& cb ) 
 { 
-	if (!mValidateSignal) mValidateSignal = new enable_signal_t();
+	if (!mValidateSignal) mValidateSignal = memClaim(new enable_signal_t());
 	return mValidateSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setMouseEnterCallback( const commit_signal_t::slot_type& cb ) 
 { 
-	if (!mMouseEnterSignal) mMouseEnterSignal = new commit_signal_t();
+	if (!mMouseEnterSignal) mMouseEnterSignal = memClaim(new commit_signal_t());
 	return mMouseEnterSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setMouseLeaveCallback( const commit_signal_t::slot_type& cb ) 
 { 
-	if (!mMouseLeaveSignal) mMouseLeaveSignal = new commit_signal_t();
+	if (!mMouseLeaveSignal) mMouseLeaveSignal = memClaim(new commit_signal_t());
 	return mMouseLeaveSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setMouseDownCallback( const mouse_signal_t::slot_type& cb ) 
 { 
-	if (!mMouseDownSignal) mMouseDownSignal = new mouse_signal_t();
+	if (!mMouseDownSignal) mMouseDownSignal = memClaim(new mouse_signal_t());
 	return mMouseDownSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setMouseUpCallback( const mouse_signal_t::slot_type& cb ) 
 { 
-	if (!mMouseUpSignal) mMouseUpSignal = new mouse_signal_t();
+	if (!mMouseUpSignal) mMouseUpSignal = memClaim(new mouse_signal_t());
 	return mMouseUpSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setRightMouseDownCallback( const mouse_signal_t::slot_type& cb ) 
 { 
-	if (!mRightMouseDownSignal) mRightMouseDownSignal = new mouse_signal_t();
+	if (!mRightMouseDownSignal) mRightMouseDownSignal = memClaim(new mouse_signal_t());
 	return mRightMouseDownSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setRightMouseUpCallback( const mouse_signal_t::slot_type& cb ) 
 { 
-	if (!mRightMouseUpSignal) mRightMouseUpSignal = new mouse_signal_t();
+	if (!mRightMouseUpSignal) mRightMouseUpSignal = memClaim(new mouse_signal_t());
 	return mRightMouseUpSignal->connect(cb); 
 }
 
 boost::signals2::connection LLUICtrl::setDoubleClickCallback( const mouse_signal_t::slot_type& cb ) 
 { 
-	if (!mDoubleClickSignal) mDoubleClickSignal = new mouse_signal_t();
+	if (!mDoubleClickSignal) mDoubleClickSignal = memClaim(new mouse_signal_t());
 	return mDoubleClickSignal->connect(cb); 
 }
 
diff --git a/indra/llui/lluictrlfactory.h b/indra/llui/lluictrlfactory.h
index f6971261d7..e6e9c66aef 100644
--- a/indra/llui/lluictrlfactory.h
+++ b/indra/llui/lluictrlfactory.h
@@ -165,17 +165,17 @@ public:
 	static T* createFromFile(const std::string &filename, LLView *parent, const widget_registry_t& registry)
 	{
 		T* widget = NULL;
-
+		
 		instance().pushFileName(filename);
 		{
 			LLXMLNodePtr root_node;
 
 			if (!LLUICtrlFactory::getLayeredXMLNode(filename, root_node))
-			{
+				{							
 				llwarns << "Couldn't parse XUI file: " << instance().getCurFileName() << llendl;
 				goto fail;
 			}
-
+			
 			LLView* view = getInstance()->createFromXML(root_node, parent, filename, registry, NULL);
 			if (view)
 			{
@@ -260,10 +260,8 @@ private:
 			// We always want to output top-left coordinates
 			typename T::Params output_params(params);
 			T::setupParamsForExport(output_params, parent);
-			// Export only the differences between this any default params
-			typename T::Params default_params(getDefaultParams<T>());
 			copyName(node, output_node);
-			parser.writeXUI(output_node, output_params, &default_params);
+			parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &getDefaultParams<T>());
 		}
 
 		// Apply layout transformations, usually munging rect
diff --git a/indra/llui/lluistring.cpp b/indra/llui/lluistring.cpp
index c4e073ccdb..23fc53ea88 100644
--- a/indra/llui/lluistring.cpp
+++ b/indra/llui/lluistring.cpp
@@ -26,6 +26,8 @@
 
 #include "linden_common.h"
 #include "lluistring.h"
+
+#include "llfasttimer.h"
 #include "llsd.h"
 #include "lltrans.h"
 
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index ad9bec9f61..ba88396294 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -30,7 +30,6 @@
 #define LLVIEW_CPP
 #include "llview.h"
 
-#include <cassert>
 #include <sstream>
 #include <boost/tokenizer.hpp>
 #include <boost/foreach.hpp>
@@ -68,6 +67,7 @@ LLView* LLView::sPreviewClickedElement = NULL;
 BOOL	LLView::sDrawPreviewHighlights = FALSE;
 S32		LLView::sLastLeftXML = S32_MIN;
 S32		LLView::sLastBottomXML = S32_MIN;
+LLTrace::MemStatHandle	LLView::sMemStat("LLView");
 std::vector<LLViewDrawContext*> LLViewDrawContext::sDrawContextStack;
 
 LLView::DrilldownFunc LLView::sDrilldown =
@@ -83,6 +83,16 @@ template class LLView* LLView::getChild<class LLView>(
 
 static LLDefaultChildRegistry::Register<LLView> r("view");
 
+namespace LLInitParam
+{
+	void TypeValues<LLView::EOrientation>::declareValues()
+	{
+		declare("horizontal", LLView::HORIZONTAL);
+		declare("vertical", LLView::VERTICAL);	
+	}
+}
+
+
 LLView::Follows::Follows()
 :   string(""),
 	flags("flags", FOLLOWS_LEFT | FOLLOWS_TOP)
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index 1c35349510..88813da3c6 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -101,9 +101,13 @@ class LLView
 :	public LLMouseHandler,			// handles mouse events
 	public LLFocusableElement,		// handles keyboard events
 	public LLMortician,				// lazy deletion
-	public LLHandleProvider<LLView>	// passes out weak references to self
+	public LLHandleProvider<LLView>,     // passes out weak references to self
+	public LLTrace::MemTrackable<LLView> // track memory usage
 {
 public:
+
+	enum EOrientation { HORIZONTAL, VERTICAL, ORIENTATION_COUNT };
+
 	struct Follows : public LLInitParam::ChoiceBlock<Follows>
 	{
 		Alternative<std::string>	string;
@@ -672,7 +676,18 @@ public:
 	static S32 sLastLeftXML;
 	static S32 sLastBottomXML;
 	static BOOL sForceReshape;
+	static LLTrace::MemStatHandle sMemStat;
+};
+
+namespace LLInitParam
+{
+template<>
+struct TypeValues<LLView::EOrientation> : public LLInitParam::TypeValuesHelper<LLView::EOrientation>
+{
+	static void declareValues();
 };
+}
+
 
 class LLCompareByTabOrder
 {
diff --git a/indra/llui/llviewmodel.cpp b/indra/llui/llviewmodel.cpp
index a9f8acc440..901260bec8 100644
--- a/indra/llui/llviewmodel.cpp
+++ b/indra/llui/llviewmodel.cpp
@@ -35,6 +35,8 @@
 // external library headers
 // other Linden headers
 
+LLTrace::MemStatHandle	LLViewModel::sMemStat("LLViewModel");
+
 ///
 LLViewModel::LLViewModel()
  : mDirty(false)
@@ -80,7 +82,10 @@ LLTextViewModel::LLTextViewModel(const LLSD& value)
 void LLTextViewModel::setValue(const LLSD& value)
 {
 	LLViewModel::setValue(value);
+	memDisclaim(mDisplay);
     mDisplay = utf8str_to_wstring(value.asString());
+	memClaim(mDisplay);
+
     // mDisplay and mValue agree
     mUpdateFromDisplay = false;
 }
@@ -91,7 +96,9 @@ void LLTextViewModel::setDisplay(const LLWString& value)
     // and do the utf8str_to_wstring() to get the corresponding mDisplay
     // value. But a text editor might want to edit the display string
     // directly, then convert back to UTF8 on commit.
+	memDisclaim(mDisplay);
     mDisplay = value;
+	memClaim(mDisplay);
     mDirty = true;
     // Don't immediately convert to UTF8 -- do it lazily -- we expect many
     // more setDisplay() calls than getValue() calls. Just flag that it needs
diff --git a/indra/llui/llviewmodel.h b/indra/llui/llviewmodel.h
index ef2e314799..2c016d2560 100644
--- a/indra/llui/llviewmodel.h
+++ b/indra/llui/llviewmodel.h
@@ -39,6 +39,7 @@
 #include "llrefcount.h"
 #include "stdenums.h"
 #include "llstring.h"
+#include "lltrace.h"
 #include <string>
 
 class LLScrollListItem;
@@ -60,7 +61,9 @@ typedef LLPointer<LLListViewModel> LLListViewModelPtr;
  * LLViewModel data. This way, the LLViewModel is quietly deleted when the
  * last referencing widget is destroyed.
  */
-class LLViewModel: public LLRefCount
+class LLViewModel 
+:	public LLRefCount,
+	public LLTrace::MemTrackable<LLViewModel>
 {
 public:
     LLViewModel();
@@ -80,6 +83,8 @@ public:
 	// 
     void setDirty() { mDirty = true; }
 
+	static LLTrace::MemStatHandle sMemStat;
+
 protected:
     LLSD mValue;
     bool mDirty;
diff --git a/indra/llui/llxuiparser.cpp b/indra/llui/llxuiparser.cpp
index afc76024d1..903f10ce10 100644
--- a/indra/llui/llxuiparser.cpp
+++ b/indra/llui/llxuiparser.cpp
@@ -29,7 +29,7 @@
 #include "llxuiparser.h"
 
 #include "llxmlnode.h"
-
+#include "llfasttimer.h"
 #ifdef LL_STANDALONE
 #include <expat.h>
 #else
@@ -861,11 +861,11 @@ bool LLXUIParser::readAttributes(LLXMLNodePtr nodep, LLInitParam::BaseBlock& blo
 	return any_parsed;
 }
 
-void LLXUIParser::writeXUI(LLXMLNodePtr node, const LLInitParam::BaseBlock &block, const LLInitParam::BaseBlock* diff_block)
+void LLXUIParser::writeXUIImpl(LLXMLNodePtr node, const LLInitParam::BaseBlock &block, const LLInitParam::predicate_rule_t rules, const LLInitParam::BaseBlock* diff_block)
 {
 	mWriteRootNode = node;
 	name_stack_t name_stack = Parser::name_stack_t();
-	block.serializeBlock(*this, name_stack, diff_block);
+	block.serializeBlock(*this, name_stack, rules, diff_block);
 	mOutNodes.clear();
 }
 
@@ -880,16 +880,24 @@ LLXMLNodePtr LLXUIParser::getNode(name_stack_t& stack)
 		it = next_it)
 	{
 		++next_it;
+		bool force_new_node = false;
+
 		if (it->first.empty())
 		{
 			it->second = false;
 			continue;
 		}
 
+		if (next_it != stack.end() && next_it->first.empty() && next_it->second)
+		{
+			force_new_node = true;
+		}
+
+
 		out_nodes_t::iterator found_it = mOutNodes.find(it->first);
 
 		// node with this name not yet written
-		if (found_it == mOutNodes.end() || it->second)
+		if (found_it == mOutNodes.end() || it->second || force_new_node)
 		{
 			// make an attribute if we are the last element on the name stack
 			bool is_attribute = next_it == stack.end();
diff --git a/indra/llui/llxuiparser.h b/indra/llui/llxuiparser.h
index d7cd256967..8d0276a8ad 100644
--- a/indra/llui/llxuiparser.h
+++ b/indra/llui/llxuiparser.h
@@ -109,9 +109,25 @@ public:
 	/*virtual*/ void parserError(const std::string& message);
 
 	void readXUI(LLXMLNodePtr node, LLInitParam::BaseBlock& block, const std::string& filename = LLStringUtil::null, bool silent=false);
-	void writeXUI(LLXMLNodePtr node, const LLInitParam::BaseBlock& block, const LLInitParam::BaseBlock* diff_block = NULL);
+	template<typename BLOCK>
+	void writeXUI(LLXMLNodePtr node, 
+				const BLOCK& block, 
+				const LLInitParam::predicate_rule_t rules = LLInitParam::default_parse_rules(),
+				const LLInitParam::BaseBlock* diff_block = NULL)
+	{
+		if (!diff_block 
+			&& !rules.isAmbivalent(LLInitParam::HAS_DEFAULT_VALUE))
+		{
+			diff_block = &LLInitParam::defaultValue<BLOCK>();
+		}
+		writeXUIImpl(node, block, rules, diff_block);
+	}
 
 private:
+	void writeXUIImpl(LLXMLNodePtr node, 
+		const LLInitParam::BaseBlock& block, 
+		const LLInitParam::predicate_rule_t rules, 
+		const LLInitParam::BaseBlock* diff_block);
 	bool readXUIImpl(LLXMLNodePtr node, LLInitParam::BaseBlock& block);
 	bool readAttributes(LLXMLNodePtr nodep, LLInitParam::BaseBlock& block);
 
diff --git a/indra/llvfs/llpidlock.cpp b/indra/llvfs/llpidlock.cpp
index 0424f2379e..3b83d1b9e3 100644
--- a/indra/llvfs/llpidlock.cpp
+++ b/indra/llvfs/llpidlock.cpp
@@ -36,7 +36,7 @@
 
 #if LL_WINDOWS   //For windows platform.
 
-#include <windows.h>
+#include "llwin32headerslean.h"
 
 namespace {
 	inline DWORD getpid() {
diff --git a/indra/llvfs/llvfile.cpp b/indra/llvfs/llvfile.cpp
index ca749c5eaf..d3f5673485 100644
--- a/indra/llvfs/llvfile.cpp
+++ b/indra/llvfs/llvfile.cpp
@@ -30,8 +30,9 @@
 
 #include "llerror.h"
 #include "llthread.h"
-#include "llstat.h"
 #include "llvfs.h"
+#include "lltimer.h"
+#include "llfasttimer.h"
 
 const S32 LLVFile::READ			= 0x00000001;
 const S32 LLVFile::WRITE		= 0x00000002;
diff --git a/indra/llwindow/llkeyboard.h b/indra/llwindow/llkeyboard.h
index c155c1b362..276074d4ca 100644
--- a/indra/llwindow/llkeyboard.h
+++ b/indra/llwindow/llkeyboard.h
@@ -28,6 +28,7 @@
 #define LL_LLKEYBOARD_H
 
 #include <map>
+#include <boost/function.hpp>
 
 #include "string_table.h"
 #include "lltimer.h"
diff --git a/indra/llwindow/llkeyboardwin32.cpp b/indra/llwindow/llkeyboardwin32.cpp
index be3fe5deb0..b76d526c5a 100644
--- a/indra/llwindow/llkeyboardwin32.cpp
+++ b/indra/llwindow/llkeyboardwin32.cpp
@@ -28,10 +28,7 @@
 
 #include "linden_common.h"
 
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
-
+#include "llwin32headerslean.h"
 #include "llkeyboardwin32.h"
 
 #include "llwindowcallbacks.h"
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index e9147d552e..c235d77656 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -31,6 +31,7 @@
 #include "llcoord.h"
 #include "llstring.h"
 #include "llcursortypes.h"
+#include "llinstancetracker.h"
 #include "llsd.h"
 
 class LLSplashScreen;
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 43c0090993..6d887926fa 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -38,6 +38,7 @@
 
 // Linden library includes
 #include "llerror.h"
+#include "llfasttimer.h"
 #include "llgl.h"
 #include "llstring.h"
 #include "lldir.h"
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 54c9ac4d4d..169d264808 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -28,9 +28,7 @@
 #define LL_LLWINDOWWIN32_H
 
 // Limit Windows API to small and manageable set.
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headerslean.h"
 
 #include "llwindow.h"
 #include "llwindowcallbacks.h"
diff --git a/indra/llxml/llxmlnode.cpp b/indra/llxml/llxmlnode.cpp
index b775249219..7570d8ccb3 100644
--- a/indra/llxml/llxmlnode.cpp
+++ b/indra/llxml/llxmlnode.cpp
@@ -273,7 +273,8 @@ void LLXMLNode::addChild(LLXMLNodePtr new_child, LLXMLNodePtr after_child)
 	new_child->mParent = this;
 	if (new_child->mIsAttribute)
 	{
-		mAttributes.insert(std::make_pair(new_child->mName, new_child));
+		std::pair<LLXMLAttribList::iterator, bool> result = mAttributes.insert(std::make_pair(new_child->mName, new_child));
+		llassert(result.second);
 	}
 	else
 	{
diff --git a/indra/lscript/lscript_execute/lscript_execute.cpp b/indra/lscript/lscript_execute/lscript_execute.cpp
index d79e9f8bde..23e1fe306e 100644
--- a/indra/lscript/lscript_execute/lscript_execute.cpp
+++ b/indra/lscript/lscript_execute/lscript_execute.cpp
@@ -35,7 +35,6 @@
 #include "lscript_library.h"
 #include "lscript_heapruntime.h"
 #include "lscript_alloc.h"
-#include "llstat.h"
 
 
 // Static
diff --git a/indra/media_plugins/quicktime/media_plugin_quicktime.cpp b/indra/media_plugins/quicktime/media_plugin_quicktime.cpp
index 24328202cb..eb18a3776f 100644
--- a/indra/media_plugins/quicktime/media_plugin_quicktime.cpp
+++ b/indra/media_plugins/quicktime/media_plugin_quicktime.cpp
@@ -28,18 +28,10 @@
 
 #include "linden_common.h"
 
-#include "llgl.h"
-
-#include "llplugininstance.h"
-#include "llpluginmessage.h"
-#include "llpluginmessageclasses.h"
-#include "media_plugin_base.h"
-
-#if LL_QUICKTIME_ENABLED
-
 #if defined(LL_DARWIN)
 	#include <QuickTime/QuickTime.h>
 #elif defined(LL_WINDOWS)
+	#include "llwin32headers.h"
 	#include "MacTypes.h"
 	#include "QTML.h"
 	#include "Movies.h"
@@ -48,6 +40,17 @@
 	#include "QTLoadLibraryUtils.h"
 #endif
 
+#include "llgl.h"
+
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+#include "media_plugin_base.h"
+
+#if LL_QUICKTIME_ENABLED
+
+
+
 // TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
 ////////////////////////////////////////////////////////////////////////////////
 //
diff --git a/indra/media_plugins/webkit/mac_volume_catcher.cpp b/indra/media_plugins/webkit/mac_volume_catcher.cpp
index 8a06bb8487..c20bcd374d 100644
--- a/indra/media_plugins/webkit/mac_volume_catcher.cpp
+++ b/indra/media_plugins/webkit/mac_volume_catcher.cpp
@@ -38,6 +38,7 @@
 #include <Carbon/Carbon.h>
 #include <QuickTime/QuickTime.h>
 #include <AudioUnit/AudioUnit.h>
+#include <list>
 
 struct VolumeCatcherStorage;
 
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index e93d73ad0e..718a8c710f 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -216,7 +216,6 @@ set(viewer_SOURCE_FILES
     llfloaterinspect.cpp
     llfloaterinventory.cpp
     llfloaterjoystick.cpp
-    llfloaterlagmeter.cpp
     llfloaterland.cpp
     llfloaterlandholdings.cpp
     llfloatermap.cpp
@@ -241,6 +240,7 @@ set(viewer_SOURCE_FILES
     llfloaterregiondebugconsole.cpp
     llfloaterregioninfo.cpp
     llfloaterreporter.cpp
+    llfloatersceneloadstats.cpp
     llfloaterscriptdebug.cpp
     llfloaterscriptlimits.cpp
     llfloatersearch.cpp
@@ -464,6 +464,7 @@ set(viewer_SOURCE_FILES
     llremoteparcelrequest.cpp
     llsavedsettingsglue.cpp
     llsaveoutfitcombobtn.cpp
+    llscenemonitor.cpp
     llsceneview.cpp
     llscreenchannel.cpp
     llscriptfloater.cpp
@@ -588,6 +589,7 @@ set(viewer_SOURCE_FILES
     llviewernetwork.cpp
     llviewerobject.cpp
     llviewerobjectlist.cpp
+    llvieweroctree.cpp
     llviewerparcelmedia.cpp
     llviewerparcelmediaautoplay.cpp
     llviewerparcelmgr.cpp
@@ -792,7 +794,6 @@ set(viewer_HEADER_FILES
     llfloaterinspect.h
     llfloaterinventory.h
     llfloaterjoystick.h
-    llfloaterlagmeter.h
     llfloaterland.h
     llfloaterlandholdings.h
     llfloatermap.h
@@ -817,6 +818,7 @@ set(viewer_HEADER_FILES
     llfloaterregiondebugconsole.h
     llfloaterregioninfo.h
     llfloaterreporter.h
+    llfloatersceneloadstats.h
     llfloaterscriptdebug.h
     llfloaterscriptlimits.h
     llfloatersearch.h
@@ -1031,6 +1033,7 @@ set(viewer_HEADER_FILES
     llrootview.h
     llsavedsettingsglue.h
     llsaveoutfitcombobtn.h
+    llscenemonitor.h
     llsceneview.h
     llscreenchannel.h
     llscriptfloater.h
@@ -1155,6 +1158,7 @@ set(viewer_HEADER_FILES
     llviewernetwork.h
     llviewerobject.h
     llviewerobjectlist.h
+    llvieweroctree.h
     llviewerparcelmedia.h
     llviewerparcelmediaautoplay.h
     llviewerparcelmgr.h
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 2e91d10cd3..94a8550938 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -6389,6 +6389,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>ObjectCacheViewCullingEnabled</key>
+    <map>
+      <key>Comment</key>
+      <string>Enable the object cache view culling. Needs to restart viewer.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
     <key>OpenDebugStatAdvanced</key>
     <map>
       <key>Comment</key>
@@ -9447,6 +9458,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>SceneLoadingMonitorEnabled</key>
+    <map>
+      <key>Comment</key>
+      <string>Enabled scene loading monitor if set</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>ScriptHelpFollowsCursor</key>
     <map>
       <key>Comment</key>
@@ -10853,7 +10875,7 @@
       <key>Type</key>
       <string>F32</string>
       <key>Value</key>
-      <integer>0.0</integer>
+      <real>0.0</real>
     </map>
     <key>TextureFetchUpdateSkipLowPriority</key>
     <map>
@@ -12492,6 +12514,7 @@
       <key>Type</key>
       <string>LLSD</string>
       <key>Value</key>
+      <array />
     </map>
     <key>VFSOldSize</key>
     <map>
@@ -14070,7 +14093,7 @@
         <real>1.0</real>
       </array>
     </map>
-    
+
     <key>HideUIControls</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/app_settings/shaders/class1/interface/onetexturefilterF.glsl b/indra/newview/app_settings/shaders/class1/interface/onetexturefilterF.glsl
new file mode 100644
index 0000000000..f1400c9b44
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/onetexturefilterF.glsl
@@ -0,0 +1,49 @@
+/** 
+ * @file onetexturefilterF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
+
+uniform sampler2D tex0;
+uniform float tolerance;
+
+VARYING vec2 vary_texcoord0;
+
+void main() 
+{
+	frag_color = texture2D(tex0, vary_texcoord0.xy);
+	
+	if(frag_color[0] + frag_color[1] + frag_color[2] < tolerance)
+	{
+		discard;
+	}
+	else
+	{		
+		frag_color[3] = 0.95f;	
+	}	
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/onetexturefilterV.glsl b/indra/newview/app_settings/shaders/class1/interface/onetexturefilterV.glsl
new file mode 100644
index 0000000000..a33ef7e92c
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/onetexturefilterV.glsl
@@ -0,0 +1,38 @@
+/** 
+ * @file onetexturefilterV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+ 
+uniform mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec2 texcoord0;
+
+VARYING vec2 vary_texcoord0;
+
+void main()
+{
+	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+	vary_texcoord0 = texcoord0;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/twotexturecompareF.glsl b/indra/newview/app_settings/shaders/class1/interface/twotexturecompareF.glsl
new file mode 100644
index 0000000000..050114b37e
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/twotexturecompareF.glsl
@@ -0,0 +1,41 @@
+/** 
+ * @file twotexturecompareF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
+
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+
+VARYING vec2 vary_texcoord0;
+VARYING vec2 vary_texcoord1;
+
+void main() 
+{
+	frag_color = abs(texture2D(tex0, vary_texcoord0.xy) - texture2D(tex1, vary_texcoord0.xy));
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/twotexturecompareV.glsl b/indra/newview/app_settings/shaders/class1/interface/twotexturecompareV.glsl
new file mode 100644
index 0000000000..67c6674f0c
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/twotexturecompareV.glsl
@@ -0,0 +1,41 @@
+/** 
+ * @file twotexturecompareV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+ 
+uniform mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec2 texcoord0;
+ATTRIBUTE vec2 texcoord1;
+
+VARYING vec2 vary_texcoord0;
+VARYING vec2 vary_texcoord1;
+
+void main()
+{
+	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+	vary_texcoord0 = texcoord0;
+	vary_texcoord1 = texcoord1;
+}
+
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index b6fd7bc9c2..4e60127ef3 100755
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -752,7 +752,7 @@ void LLAgent::setFlying(BOOL fly)
 		}
 		if( !was_flying )
 		{
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_FLY_COUNT);
+			add(LLStatViewer::FLY, 1);
 		}
 		setControlFlags(AGENT_CONTROL_FLY);
 	}
@@ -1046,6 +1046,14 @@ const LLVector3d &LLAgent::getPositionGlobal() const
 	return mPositionGlobal;
 }
 
+bool LLAgent::isPositionChanged() const
+{
+	LLVector3d diff;
+	diff = mPositionGlobal - mLastPositionGlobal;
+	
+	return diff.lengthSquared() > 1.0;
+}
+
 //-----------------------------------------------------------------------------
 // getPositionAgent()
 //-----------------------------------------------------------------------------
@@ -3806,7 +3814,7 @@ bool LLAgent::teleportCore(bool is_local)
 	gAgentCamera.resetView(FALSE);
 
 	// local logic
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_TELEPORT_COUNT);
+	add(LLStatViewer::TELEPORT, 1);
 	if (is_local)
 	{
 		gAgent.setTeleportState( LLAgent::TELEPORT_LOCAL );
@@ -4123,7 +4131,7 @@ void LLAgent::setTeleportState(ETeleportState state)
 
 		case TELEPORT_ARRIVING:
 		// First two position updates after a teleport tend to be weird
-		LLViewerStats::getInstance()->mAgentPositionSnaps.mCountOfNextUpdatesToIgnore = 2;
+		//LLViewerStats::getInstance()->mAgentPositionSnaps.mCountOfNextUpdatesToIgnore = 2;
 
 		// Let the interested parties know we've teleported.
 		LLViewerParcelMgr::getInstance()->onTeleportFinished(false, getPositionGlobal());
diff --git a/indra/newview/llagent.h b/indra/newview/llagent.h
index 99904e118c..a1e899b45d 100644
--- a/indra/newview/llagent.h
+++ b/indra/newview/llagent.h
@@ -250,6 +250,8 @@ public:
 	
 	const LLVector3d &getLastPositionGlobal() const { return mLastPositionGlobal; }
 	void			setLastPositionGlobal(const LLVector3d &pos) { mLastPositionGlobal = pos; }
+
+	bool            isPositionChanged() const;
 private:
 	std::set<U64>	mRegionsVisited;		// Stat - what distinct regions has the avatar been to?
 	F64				mDistanceTraveled;		// Stat - how far has the avatar moved?
diff --git a/indra/newview/llagentcamera.cpp b/indra/newview/llagentcamera.cpp
index 9025c7af8b..420220d21a 100644
--- a/indra/newview/llagentcamera.cpp
+++ b/indra/newview/llagentcamera.cpp
@@ -337,7 +337,7 @@ void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
 			LLVector3 agent_at_axis = gAgent.getAtAxis();
 			agent_at_axis -= projected_vec(agent_at_axis, gAgent.getReferenceUpVector());
 			agent_at_axis.normalize();
-			gAgent.resetAxes(lerp(gAgent.getAtAxis(), agent_at_axis, LLCriticalDamp::getInterpolant(0.3f)));
+			gAgent.resetAxes(lerp(gAgent.getAtAxis(), agent_at_axis, LLSmoothInterpolation::getInterpolant(0.3f)));
 		}
 
 		setFocusOnAvatar(TRUE, ANIMATE);
@@ -1082,8 +1082,8 @@ void LLAgentCamera::updateLookAt(const S32 mouse_x, const S32 mouse_y)
 	LLQuaternion av_inv_rot = ~gAgentAvatarp->mRoot.getWorldRotation();
 	LLVector3 root_at = LLVector3::x_axis * gAgentAvatarp->mRoot.getWorldRotation();
 
-	if 	((gViewerWindow->getMouseVelocityStat()->getCurrent() < 0.01f) &&
-		 (root_at * last_at_axis > 0.95f))
+	if 	(LLTrace::get_frame_recording().getLastRecordingPeriod().getLastValue(*gViewerWindow->getMouseVelocityStat()) < 0.01f
+		&& (root_at * last_at_axis > 0.95f))
 	{
 		LLVector3 vel = gAgentAvatarp->getVelocity();
 		if (vel.magVecSquared() > 4.f)
@@ -1138,13 +1138,14 @@ void LLAgentCamera::updateLookAt(const S32 mouse_x, const S32 mouse_y)
 	}
 }
 
+static LLFastTimer::DeclareTimer FTM_UPDATE_CAMERA("Camera");
+
 //-----------------------------------------------------------------------------
 // updateCamera()
 //-----------------------------------------------------------------------------
 void LLAgentCamera::updateCamera()
 {
-	static LLFastTimer::DeclareTimer ftm("Camera");
-	LLFastTimer t(ftm);
+	LLFastTimer t(FTM_UPDATE_CAMERA);
 
 	// - changed camera_skyward to the new global "mCameraUpVector"
 	mCameraUpVector = LLVector3::z_axis;
@@ -1246,7 +1247,7 @@ void LLAgentCamera::updateCamera()
 	gAgentCamera.clearPanKeys();
 
 	// lerp camera focus offset
-	mCameraFocusOffset = lerp(mCameraFocusOffset, mCameraFocusOffsetTarget, LLCriticalDamp::getInterpolant(CAMERA_FOCUS_HALF_LIFE));
+	mCameraFocusOffset = lerp(mCameraFocusOffset, mCameraFocusOffsetTarget, LLSmoothInterpolation::getInterpolant(CAMERA_FOCUS_HALF_LIFE));
 
 	if ( mCameraMode == CAMERA_MODE_FOLLOW )
 	{
@@ -1364,7 +1365,7 @@ void LLAgentCamera::updateCamera()
 		{
 			const F32 SMOOTHING_HALF_LIFE = 0.02f;
 			
-			F32 smoothing = LLCriticalDamp::getInterpolant(gSavedSettings.getF32("CameraPositionSmoothing") * SMOOTHING_HALF_LIFE, FALSE);
+			F32 smoothing = LLSmoothInterpolation::getInterpolant(gSavedSettings.getF32("CameraPositionSmoothing") * SMOOTHING_HALF_LIFE, FALSE);
 					
 			if (!mFocusObject)  // we differentiate on avatar mode 
 			{
@@ -1394,7 +1395,7 @@ void LLAgentCamera::updateCamera()
 	}
 
 	
-	mCameraCurrentFOVZoomFactor = lerp(mCameraCurrentFOVZoomFactor, mCameraFOVZoomFactor, LLCriticalDamp::getInterpolant(FOV_ZOOM_HALF_LIFE));
+	mCameraCurrentFOVZoomFactor = lerp(mCameraCurrentFOVZoomFactor, mCameraFOVZoomFactor, LLSmoothInterpolation::getInterpolant(FOV_ZOOM_HALF_LIFE));
 
 //	llinfos << "Current FOV Zoom: " << mCameraCurrentFOVZoomFactor << " Target FOV Zoom: " << mCameraFOVZoomFactor << " Object penetration: " << mFocusObjectDist << llendl;
 
@@ -1809,7 +1810,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
 
 			if (mTargetCameraDistance != mCurrentCameraDistance)
 			{
-				F32 camera_lerp_amt = LLCriticalDamp::getInterpolant(CAMERA_ZOOM_HALF_LIFE);
+				F32 camera_lerp_amt = LLSmoothInterpolation::getInterpolant(CAMERA_ZOOM_HALF_LIFE);
 
 				mCurrentCameraDistance = lerp(mCurrentCameraDistance, mTargetCameraDistance, camera_lerp_amt);
 			}
@@ -1827,7 +1828,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
 			if (isAgentAvatarValid())
 			{
 				LLVector3d camera_lag_d;
-				F32 lag_interp = LLCriticalDamp::getInterpolant(CAMERA_LAG_HALF_LIFE);
+				F32 lag_interp = LLSmoothInterpolation::getInterpolant(CAMERA_LAG_HALF_LIFE);
 				LLVector3 target_lag;
 				LLVector3 vel = gAgent.getVelocity();
 
@@ -1872,7 +1873,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
 				}
 				else
 				{
-					mCameraLag = lerp(mCameraLag, LLVector3::zero, LLCriticalDamp::getInterpolant(0.15f));
+					mCameraLag = lerp(mCameraLag, LLVector3::zero, LLSmoothInterpolation::getInterpolant(0.15f));
 				}
 
 				camera_lag_d.setVec(mCameraLag);
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 1000c0e1e8..3e61787c13 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -60,7 +60,8 @@
 #include "llcurl.h"
 #include "llcalc.h"
 #include "lltexturestats.h"
-#include "lltexturestats.h"
+#include "lltrace.h"
+#include "lltracethreadrecorder.h"
 #include "llviewerwindow.h"
 #include "llviewerdisplay.h"
 #include "llviewermedia.h"
@@ -277,7 +278,7 @@ LLPumpIO* gServicePump = NULL;
 
 U64 gFrameTime = 0;
 F32 gFrameTimeSeconds = 0.f;
-F32 gFrameIntervalSeconds = 0.f;
+LLUnit<LLUnits::Seconds, F32> gFrameIntervalSeconds = 0.f;
 F32 gFPSClamped = 10.f;						// Pretend we start at target rate.
 F32 gFrameDTClamped = 0.f;					// Time between adjacent checks to network for packets
 U64	gStartTime = 0; // gStartTime is "private", used only to calculate gFrameTimeSeconds
@@ -591,7 +592,7 @@ public:
 		
 		while (!LLAppViewer::instance()->isQuitting())
 		{
-			LLFastTimer::writeLog(os);
+			LLTrace::TimeBlock::writeLog(os);
 			os.flush();
 			ms_sleep(32);
 		}
@@ -679,7 +680,6 @@ bool LLAppViewer::init()
 	// into the log files during normal startup until AFTER
 	// we run the "program crashed last time" error handler below.
 	//
-	LLFastTimer::reset();
 
 	// initialize SSE options
 	LLVector4a::initClass();
@@ -1033,9 +1033,9 @@ bool LLAppViewer::init()
 	if (gGLManager.mGLVersion < LLFeatureManager::getInstance()->getExpectedGLVersion())
 	{
 		if (gGLManager.mIsIntel)
-		{
-			LLNotificationsUtil::add("IntelOldDriver");
-		}
+	{
+		LLNotificationsUtil::add("IntelOldDriver");
+	}
 		else if (gGLManager.mIsNVIDIA)
 		{
 			LLNotificationsUtil::add("NVIDIAOldDriver");
@@ -1238,7 +1238,10 @@ bool LLAppViewer::mainLoop()
 	while (!LLApp::isExiting())
 	{
 		LLFastTimer _(FTM_FRAME);
-		LLFastTimer::nextFrame(); 
+		LLTrace::get_frame_recording().nextPeriod();
+		LLTrace::TimeBlock::logStats();
+
+		LLTrace::getMasterThreadRecorder().pullFromSlaveThreads();
 
 		//clear call stack records
 		llclearcallstacks;
@@ -1355,7 +1358,6 @@ bool LLAppViewer::mainLoop()
 					LLFloaterSnapshot::update(); // take snapshots
 					gGLActive = FALSE;
 				}
-
 			}
 
 			pingMainloopTimeout("Main:Sleep");
@@ -1410,7 +1412,7 @@ bool LLAppViewer::mainLoop()
 				{
 					S32 work_pending = 0;
 					S32 io_pending = 0;
-					F32 max_time = llmin(gFrameIntervalSeconds*10.f, 1.f);
+					F32 max_time = llmin(gFrameIntervalSeconds.value() *10.f, 1.f);
 
 					{
 						LLFastTimer ftm(FTM_TEXTURE_CACHE);
@@ -1567,9 +1569,9 @@ bool LLAppViewer::cleanup()
 	if (LLFastTimerView::sAnalyzePerformance)
 	{
 		llinfos << "Analyzing performance" << llendl;
-		std::string baseline_name = LLFastTimer::sLogName + "_baseline.slp";
-		std::string current_name  = LLFastTimer::sLogName + ".slp"; 
-		std::string report_name   = LLFastTimer::sLogName + "_report.csv";
+		std::string baseline_name = LLTrace::TimeBlock::sLogName + "_baseline.slp";
+		std::string current_name  = LLTrace::TimeBlock::sLogName + ".slp"; 
+		std::string report_name   = LLTrace::TimeBlock::sLogName + "_report.csv";
 
 		LLFastTimerView::doAnalysis(
 			gDirUtilp->getExpandedFilename(LL_PATH_LOGS, baseline_name),
@@ -1928,9 +1930,9 @@ bool LLAppViewer::cleanup()
 	{
 		llinfos << "Analyzing performance" << llendl;
 		
-		std::string baseline_name = LLFastTimer::sLogName + "_baseline.slp";
-		std::string current_name  = LLFastTimer::sLogName + ".slp"; 
-		std::string report_name   = LLFastTimer::sLogName + "_report.csv";
+		std::string baseline_name = LLTrace::TimeBlock::sLogName + "_baseline.slp";
+		std::string current_name  = LLTrace::TimeBlock::sLogName + ".slp"; 
+		std::string report_name   = LLTrace::TimeBlock::sLogName + "_report.csv";
 
 		LLFastTimerView::doAnalysis(
 			gDirUtilp->getExpandedFilename(LL_PATH_LOGS, baseline_name),
@@ -2053,10 +2055,10 @@ bool LLAppViewer::initThreads()
 													enable_threads && true,
 													app_metrics_qa_mode);	
 
-	if (LLFastTimer::sLog || LLFastTimer::sMetricLog)
+	if (LLTrace::TimeBlock::sLog || LLTrace::TimeBlock::sMetricLog)
 	{
-		LLFastTimer::sLogLock = new LLMutex(NULL);
-		mFastTimerLogThread = new LLFastTimerLogThread(LLFastTimer::sLogName);
+		LLTrace::TimeBlock::setLogLock(new LLMutex(NULL));
+		mFastTimerLogThread = new LLFastTimerLogThread(LLTrace::TimeBlock::sLogName);
 		mFastTimerLogThread->start();
 	}
 
@@ -2465,13 +2467,13 @@ bool LLAppViewer::initConfiguration()
 
 	if (clp.hasOption("logperformance"))
 	{
-		LLFastTimer::sLog = TRUE;
-		LLFastTimer::sLogName = std::string("performance");		
+		LLTrace::TimeBlock::sLog = true;
+		LLTrace::TimeBlock::sLogName = std::string("performance");		
 	}
 	
 	if (clp.hasOption("logmetrics"))
  	{
- 		LLFastTimer::sMetricLog = TRUE ;
+ 		LLTrace::TimeBlock::sMetricLog = true ;
 		// '--logmetrics' can be specified with a named test metric argument so the data gathering is done only on that test
 		// In the absence of argument, every metric is gathered (makes for a rather slow run and hard to decipher report...)
 		std::string test_name = clp.getOption("logmetrics")[0];
@@ -2479,11 +2481,11 @@ bool LLAppViewer::initConfiguration()
 		if (test_name == "")
 		{
 			llwarns << "No '--logmetrics' argument given, will output all metrics to " << DEFAULT_METRIC_NAME << llendl;
-			LLFastTimer::sLogName = DEFAULT_METRIC_NAME;
+			LLTrace::TimeBlock::sLogName = DEFAULT_METRIC_NAME;
 		}
 		else
 		{
-			LLFastTimer::sLogName = test_name;
+			LLTrace::TimeBlock::sLogName = test_name;
 		}
  	}
 
@@ -3752,7 +3754,7 @@ U32 LLAppViewer::getObjectCacheVersion()
 {
 	// Viewer object cache version, change if object update
 	// format changes. JC
-	const U32 INDRA_OBJECT_CACHE_VERSION = 14;
+	const U32 INDRA_OBJECT_CACHE_VERSION = 15;
 
 	return INDRA_OBJECT_CACHE_VERSION;
 }
@@ -4193,6 +4195,8 @@ static LLFastTimer::DeclareTimer FTM_WORLD_UPDATE("Update World");
 static LLFastTimer::DeclareTimer FTM_NETWORK("Network");
 static LLFastTimer::DeclareTimer FTM_AGENT_NETWORK("Agent Network");
 static LLFastTimer::DeclareTimer FTM_VLMANAGER("VL Manager");
+static LLFastTimer::DeclareTimer FTM_AGENT_POSITION("Agent Position");
+static LLFastTimer::DeclareTimer FTM_HUD_EFFECTS("HUD Effects");
 
 ///////////////////////////////////////////////////////
 // idle()
@@ -4211,7 +4215,7 @@ void LLAppViewer::idle()
 	LLFrameTimer::updateFrameCount();
 	LLEventTimer::updateClass();
 	LLNotificationsUI::LLToast::updateClass();
-	LLCriticalDamp::updateInterpolants();
+	LLSmoothInterpolation::updateInterpolants();
 	LLMortician::updateClass();
 	LLFilePickerThread::clearDead();  //calls LLFilePickerThread::notify()
 
@@ -4334,21 +4338,12 @@ void LLAppViewer::idle()
 				llinfos << "Dead object updates: " << gObjectList.mNumDeadObjectUpdates << llendl;
 				gObjectList.mNumDeadObjectUpdates = 0;
 			}
-			if (gObjectList.mNumUnknownKills)
-			{
-				llinfos << "Kills on unknown objects: " << gObjectList.mNumUnknownKills << llendl;
-				gObjectList.mNumUnknownKills = 0;
-			}
 			if (gObjectList.mNumUnknownUpdates)
 			{
 				llinfos << "Unknown object updates: " << gObjectList.mNumUnknownUpdates << llendl;
 				gObjectList.mNumUnknownUpdates = 0;
 			}
 
-			// ViewerMetrics FPS piggy-backing on the debug timer.
-			// The 5-second interval is nice for this purpose.  If the object debug
-			// bit moves or is disabled, please give this a suitable home.
-			LLViewerAssetStatsFF::record_fps_main(gFPSClamped);
 			LLViewerAssetStatsFF::record_avatar_stats();
 		}
 	}
@@ -4430,8 +4425,7 @@ void LLAppViewer::idle()
 
 	{
 		// Handle pending gesture processing
-		static LLFastTimer::DeclareTimer ftm("Agent Position");
-		LLFastTimer t(ftm);
+		LLFastTimer t(FTM_AGENT_POSITION);
 		LLGestureMgr::instance().update();
 
 		gAgent.updateAgentPosition(gFrameDTClamped, yaw, current_mouse.mX, current_mouse.mY);
@@ -4478,8 +4472,7 @@ void LLAppViewer::idle()
 	//
 
 	{
-		static LLFastTimer::DeclareTimer ftm("HUD Effects");
-		LLFastTimer t(ftm);
+		LLFastTimer t(FTM_HUD_EFFECTS);
 		LLSelectMgr::getInstance()->updateEffects();
 		LLHUDManager::getInstance()->cleanupEffects();
 		LLHUDManager::getInstance()->sendEffects();
@@ -4877,7 +4870,7 @@ void LLAppViewer::idleNetwork()
 			gPrintMessagesThisFrame = FALSE;
 		}
 	}
-	LLViewerStats::getInstance()->mNumNewObjectsStat.addValue(gObjectList.mNumNewObjects);
+	add(LLStatViewer::NUM_NEW_OBJECTS, gObjectList.mNumNewObjects);
 
 	// Retransmit unacknowledged packets.
 	gXferManager->retransmitUnackedPackets();
@@ -5287,17 +5280,7 @@ void LLAppViewer::metricsUpdateRegion(U64 region_handle)
 {
 	if (0 != region_handle)
 	{
-		LLViewerAssetStatsFF::set_region_main(region_handle);
-		if (LLAppViewer::sTextureFetch)
-		{
-			// Send a region update message into 'thread1' to get the new region.
-			LLAppViewer::sTextureFetch->commandSetRegion(region_handle);
-		}
-		else
-		{
-			// No 'thread1', a.k.a. TextureFetch, so update directly
-			LLViewerAssetStatsFF::set_region_thread1(region_handle);
-		}
+		LLViewerAssetStatsFF::set_region(region_handle);
 	}
 }
 
@@ -5308,7 +5291,7 @@ void LLAppViewer::metricsUpdateRegion(U64 region_handle)
  */
 void LLAppViewer::metricsSend(bool enable_reporting)
 {
-	if (! gViewerAssetStatsMain)
+	if (! gViewerAssetStats)
 		return;
 
 	if (LLAppViewer::sTextureFetch)
@@ -5321,7 +5304,10 @@ void LLAppViewer::metricsSend(bool enable_reporting)
 
 			// Make a copy of the main stats to send into another thread.
 			// Receiving thread takes ownership.
-			LLViewerAssetStats * main_stats(new LLViewerAssetStats(*gViewerAssetStatsMain));
+			LLViewerAssetStats * main_stats(new LLViewerAssetStats(*gViewerAssetStats));
+			main_stats->stop();
+
+			main_stats->updateStats();
 			
 			// Send a report request into 'thread1' to get the rest of the data
 			// and provide some additional parameters while here.
@@ -5340,6 +5326,6 @@ void LLAppViewer::metricsSend(bool enable_reporting)
 	// Reset even if we can't report.  Rather than gather up a huge chunk of
 	// data, we'll keep to our sampling interval and retain the data
 	// resolution in time.
-	gViewerAssetStatsMain->reset();
+	gViewerAssetStats->reset();
 }
 
diff --git a/indra/newview/llappviewer.h b/indra/newview/llappviewer.h
index 7563d672e3..85a29925fb 100644
--- a/indra/newview/llappviewer.h
+++ b/indra/newview/llappviewer.h
@@ -32,6 +32,7 @@
 #include "llsys.h"			// for LLOSInfo
 #include "lltimer.h"
 #include "llappcorehttp.h"
+#include "llunit.h"
 
 class LLCommandLineParser;
 class LLFrameTimer;
@@ -329,7 +330,7 @@ extern LLPumpIO* gServicePump;
 
 extern U64      gFrameTime;					// The timestamp of the most-recently-processed frame
 extern F32		gFrameTimeSeconds;			// Loses msec precision after ~4.5 hours...
-extern F32		gFrameIntervalSeconds;		// Elapsed time between current and previous gFrameTimeSeconds
+extern LLUnit<LLUnits::Seconds, F32>		gFrameIntervalSeconds;		// Elapsed time between current and previous gFrameTimeSeconds
 extern F32		gFPSClamped;				// Frames per second, smoothed, weighted toward last frame
 extern F32		gFrameDTClamped;
 extern U64		gStartTime;
diff --git a/indra/newview/llchatbar.cpp b/indra/newview/llchatbar.cpp
index d6095cce07..f6bad18070 100644
--- a/indra/newview/llchatbar.cpp
+++ b/indra/newview/llchatbar.cpp
@@ -618,24 +618,6 @@ void LLChatBar::sendChatFromViewer(const LLWString &wtext, EChatType type, BOOL
 
 	send_chat_from_viewer(utf8_out_text, type, channel);
 }
-/*
-void send_chat_from_viewer(const std::string& utf8_out_text, EChatType type, S32 channel)
-{
-	LLMessageSystem* msg = gMessageSystem;
-	msg->newMessageFast(_PREHASH_ChatFromViewer);
-	msg->nextBlockFast(_PREHASH_AgentData);
-	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
-	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-	msg->nextBlockFast(_PREHASH_ChatData);
-	msg->addStringFast(_PREHASH_Message, utf8_out_text);
-	msg->addU8Fast(_PREHASH_Type, type);
-	msg->addS32("Channel", channel);
-
-	gAgent.sendReliableMessage();
-
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_CHAT_COUNT);
-}
-*/
 
 void LLChatBar::onCommitGesture(LLUICtrl* ctrl)
 {
diff --git a/indra/newview/llcompilequeue.cpp b/indra/newview/llcompilequeue.cpp
index 4f5f9e22b6..033c8f4865 100644
--- a/indra/newview/llcompilequeue.cpp
+++ b/indra/newview/llcompilequeue.cpp
@@ -436,8 +436,6 @@ void LLFloaterCompileQueue::scriptArrived(LLVFS *vfs, const LLUUID& asset_id,
 	}
 	else
 	{
-		LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 		if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status )
 		{
 			LLSD args;
diff --git a/indra/newview/lldebugview.cpp b/indra/newview/lldebugview.cpp
index aeecf054b8..1264f05d77 100644
--- a/indra/newview/lldebugview.cpp
+++ b/indra/newview/lldebugview.cpp
@@ -40,7 +40,7 @@
 #include "llsceneview.h"
 #include "llviewertexture.h"
 #include "llfloaterreg.h"
-
+#include "llscenemonitor.h"
 //
 // Globals
 //
@@ -66,6 +66,7 @@ LLDebugView::~LLDebugView()
 	gDebugView = NULL;
 	gTextureView = NULL;
 	gSceneView = NULL;
+	gSceneMonitorView = NULL;
 }
 
 void LLDebugView::init()
@@ -99,6 +100,13 @@ void LLDebugView::init()
 	addChild(gSceneView);
 	gSceneView->setRect(rect);
 	
+	gSceneMonitorView = new LLSceneMonitorView(r);
+	gSceneMonitorView->setFollowsTop();
+	gSceneMonitorView->setFollowsLeft();
+	gSceneMonitorView->setVisible(FALSE);
+	addChild(gSceneMonitorView);
+	gSceneMonitorView->setRect(rect);
+	
 	r.setLeftTopAndSize(25, rect.getHeight() - 50, (S32) (gViewerWindow->getWindowRectScaled().getWidth() * 0.75f), 
 									 (S32) (gViewerWindow->getWindowRectScaled().getHeight() * 0.75f));
 
diff --git a/indra/newview/lldrawable.cpp b/indra/newview/lldrawable.cpp
index d041baea90..4d72dd1343 100644
--- a/indra/newview/lldrawable.cpp
+++ b/indra/newview/lldrawable.cpp
@@ -49,6 +49,7 @@
 #include "llspatialpartition.h"
 #include "llviewerobjectlist.h"
 #include "llviewerwindow.h"
+#include "llvocache.h"
 
 const F32 MIN_INTERPOLATE_DISTANCE_SQUARED = 0.001f * 0.001f;
 const F32 MAX_INTERPOLATE_DISTANCE_SQUARED = 10.f * 10.f;
@@ -58,6 +59,7 @@ const F32 MIN_SHADOW_CASTER_RADIUS = 2.0f;
 static LLFastTimer::DeclareTimer FTM_CULL_REBOUND("Cull Rebound");
 
 extern bool gShiftFrame;
+LLTrace::MemStatHandle	LLDrawable::sMemStat("LLDrawable");
 
 
 ////////////////////////
@@ -75,7 +77,6 @@ extern bool gShiftFrame;
 //
 
 // static
-U32 LLDrawable::sCurVisible = 0;
 U32 LLDrawable::sNumZombieDrawables = 0;
 F32 LLDrawable::sCurPixelAngle = 0;
 LLDynamicArrayPtr<LLPointer<LLDrawable> > LLDrawable::sDeadList;
@@ -85,33 +86,59 @@ LLDynamicArrayPtr<LLPointer<LLDrawable> > LLDrawable::sDeadList;
 // static
 void LLDrawable::incrementVisible() 
 {
-	sCurVisible++;
+	LLViewerOctreeEntryData::incrementVisible();
 	sCurPixelAngle = (F32) gViewerWindow->getWindowHeightRaw()/LLViewerCamera::getInstance()->getView();
 }
 
-void LLDrawable::init()
+LLDrawable::LLDrawable(LLViewerObject *vobj, bool new_entry)
+	: LLViewerOctreeEntryData(LLViewerOctreeEntry::LLDRAWABLE),
+	  mVObjp(vobj)
+{
+	init(new_entry); 
+}
+
+void LLDrawable::init(bool new_entry)
 {
 	// mXform
 	mParent = NULL;
 	mRenderType = 0;
 	mCurrentScale = LLVector3(1,1,1);
 	mDistanceWRTCamera = 0.0f;
-	mPositionGroup.clear();
-	mExtents[0].clear();
-	mExtents[1].clear();
-
 	mState     = 0;
-	mVObjp   = NULL;
+
 	// mFaces
-	mSpatialGroupp = NULL;
-	mVisible = sCurVisible - 2;//invisible for the current frame and the last frame.
 	mRadius = 0.f;
+	mGeneration = -1;	
+	mSpatialBridge = NULL;
+
+	LLViewerOctreeEntry* entry = NULL;
+	LLVOCacheEntry* vo_entry = NULL;
+	if(!new_entry && mVObjp && getRegion() != NULL)
+	{
+		vo_entry = getRegion()->getCacheEntryForOctree(mVObjp->getLocalID());
+		if(vo_entry)
+		{
+			entry = vo_entry->getEntry();			
+		}
+	}
+	setOctreeEntry(entry);
+	if(vo_entry)
+	{
+		if(!entry)
+		{
+			vo_entry->setOctreeEntry(mEntry);
+		}
+		else if(vo_entry->getNumOfChildren() > 0)
+		{
+			getRegion()->addVisibleCacheEntry(vo_entry); //to load all children.
+		}
 	
-	mGeneration = -1;
-	mBinRadius = 1.f;
-	mBinIndex = -1;
+		getRegion()->addActiveCacheEntry(vo_entry);		
+	}
 
-	mSpatialBridge = NULL;
+	llassert(!vo_entry || vo_entry->getEntry() == mEntry);
+
+	initVisible(sCurVisible - 2);//invisible for the current frame and the last frame.
 }
 
 // static
@@ -155,6 +182,7 @@ void LLDrawable::markDead()
 		llwarns << "Warning!  Marking dead multiple times!" << llendl;
 		return;
 	}
+	setState(DEAD);
 
 	if (mSpatialBridge)
 	{
@@ -165,7 +193,6 @@ void LLDrawable::markDead()
 	sNumZombieDrawables++;
 
 	// We're dead.  Free up all of our references to other objects
-	setState(DEAD);
 	cleanupReferences();
 //	sDeadList.put(this);
 }
@@ -219,6 +246,8 @@ void LLDrawable::cleanupReferences()
 	
 	gPipeline.unlinkDrawable(this);
 	
+	removeFromOctree();
+
 	{
 		LLFastTimer t(FTM_DEREF_DRAWABLE);
 		// Cleanup references to other objects
@@ -227,6 +256,21 @@ void LLDrawable::cleanupReferences()
 	}
 }
 
+void LLDrawable::removeFromOctree()
+{
+	if(!mEntry)
+	{
+		return;
+	}
+
+	mEntry->removeData(this);
+	if(mEntry->hasVOCacheEntry())
+	{
+		getRegion()->removeActiveCacheEntry((LLVOCacheEntry*)mEntry->getVOCacheEntry(), this);
+	}
+	mEntry = NULL;
+}
+
 void LLDrawable::cleanupDeadDrawables()
 {
 	/*
@@ -287,10 +331,10 @@ LLFace*	LLDrawable::addFace(LLFacePool *poolp, LLViewerTexture *texturep)
 LLFace*	LLDrawable::addFace(const LLTextureEntry *te, LLViewerTexture *texturep)
 {
 	LLFace *face;
-
+	
 	{
 		LLFastTimer t(FTM_ALLOCATE_FACE);
-		face = new LLFace(this, mVObjp);
+	face = new LLFace(this, mVObjp);
 	}
 
 	face->setTEOffset(mFaces.size());
@@ -439,6 +483,12 @@ void LLDrawable::makeActive()
 		}
 		updatePartition();
 	}
+	else if (!isRoot() && !mParent->isActive()) //this should not happen, but occasionally it does...
+	{
+		mParent->makeActive();
+		//NOTE: linked set will now NEVER become static
+		mParent->setState(LLDrawable::ACTIVE_CHILD);
+	}
 
 	llassert(isAvatar() || isRoot() || mParent->isActive());
 }
@@ -519,7 +569,7 @@ F32 LLDrawable::updateXform(BOOL undamped)
 
 	if (damped && isVisible())
 	{
-		F32 lerp_amt = llclamp(LLCriticalDamp::getInterpolant(OBJECT_DAMPING_TIME_CONSTANT), 0.f, 1.f);
+		F32 lerp_amt = llclamp(LLSmoothInterpolation::getInterpolant(OBJECT_DAMPING_TIME_CONSTANT), 0.f, 1.f);
 		LLVector3 new_pos = lerp(old_pos, target_pos, lerp_amt);
 		dist_squared = dist_vec_squared(new_pos, target_pos);
 
@@ -738,7 +788,7 @@ void LLDrawable::updateDistance(LLCamera& camera, bool force_update)
 		LLVOVolume* volume = getVOVolume();
 		if (volume)
 		{
-			if (getSpatialGroup())
+			if (getGroup())
 			{
 				pos.set(getPositionGroup().getF32ptr());
 			}
@@ -856,9 +906,7 @@ void LLDrawable::shiftPos(const LLVector4a &shift_vector)
 			}
 		}
 		
-		mExtents[0].add(shift_vector);
-		mExtents[1].add(shift_vector);
-		mPositionGroup.add(shift_vector);
+		shift(shift_vector);
 	}
 	else if (mSpatialBridge)
 	{
@@ -866,9 +914,7 @@ void LLDrawable::shiftPos(const LLVector4a &shift_vector)
 	}
 	else if (isAvatar())
 	{
-		mExtents[0].add(shift_vector);
-		mExtents[1].add(shift_vector);
-		mPositionGroup.add(shift_vector);
+		shift(shift_vector);
 	}
 	
 	mVObjp->onShift(shift_vector);
@@ -880,40 +926,24 @@ const LLVector3& LLDrawable::getBounds(LLVector3& min, LLVector3& max) const
 	return mXform.getPositionW();
 }
 
-const LLVector4a* LLDrawable::getSpatialExtents() const
-{
-	return mExtents;
-}
-
-void LLDrawable::setSpatialExtents(const LLVector3& min, const LLVector3& max)
-{ 
-	mExtents[0].load3(min.mV); 
-	mExtents[1].load3(max.mV);
-}
-
-void LLDrawable::setSpatialExtents(const LLVector4a& min, const LLVector4a& max)
-{ 
-	mExtents[0] = min; 
-	mExtents[1] = max;
-}
-
-void LLDrawable::setPositionGroup(const LLVector4a& pos)
-{
-	mPositionGroup = pos;
-}
-
 void LLDrawable::updateSpatialExtents()
 {
 	if (mVObjp)
 	{
-		mVObjp->updateSpatialExtents(mExtents[0], mExtents[1]);
+		const LLVector4a* exts = getSpatialExtents();
+		LLVector4a extents[2];
+		extents[0] = exts[0];
+		extents[1] = exts[1];
+
+		mVObjp->updateSpatialExtents(extents[0], extents[1]);
+		setSpatialExtents(extents[0], extents[1]);
 	}
 	
 	updateBinRadius();
 	
 	if (mSpatialBridge.notNull())
 	{
-		mPositionGroup.splat(0.f);
+		getGroupPosition().splat(0.f);
 	}
 }
 
@@ -922,11 +952,11 @@ void LLDrawable::updateBinRadius()
 {
 	if (mVObjp.notNull())
 	{
-		mBinRadius = llmin(mVObjp->getBinRadius(), 256.f);
+		setBinRadius(llmin(mVObjp->getBinRadius(), 256.f));
 	}
 	else
 	{
-		mBinRadius = llmin(getRadius()*4.f, 256.f);
+		setBinRadius(llmin(getRadius()*4.f, 256.f));
 	}
 }
 
@@ -960,26 +990,56 @@ void LLDrawable::updateUVMinMax()
 {
 }
 
-LLSpatialGroup* LLDrawable::getSpatialGroup() const
+//virtual
+bool LLDrawable::isVisible() const
+{
+	if (LLViewerOctreeEntryData::isVisible())
 { 
-	llassert((mSpatialGroupp == NULL) ? getBinIndex() == -1 : getBinIndex() != -1);
-	return mSpatialGroupp; 
+		return true;
 }
 
-void LLDrawable::setSpatialGroup(LLSpatialGroup *groupp)
 {
-	//precondition: mSpatialGroupp MUST be null or DEAD or mSpatialGroupp MUST NOT contain this
-	llassert(!mSpatialGroupp || mSpatialGroupp->isDead() || !mSpatialGroupp->hasElement(this));
+		LLviewerOctreeGroup* group = mEntry->getGroup();
+		if (group && group->isVisible())
+		{
+			LLViewerOctreeEntryData::setVisible();
+			return true;
+		}
+	}
 
-	//precondition: groupp MUST be null or groupp MUST contain this
-	llassert(!groupp || groupp->hasElement(this));
+	return false;
+}
 
-/*if (mSpatialGroupp && (groupp != mSpatialGroupp))
+//virtual
+bool LLDrawable::isRecentlyVisible() const
+{
+	//currently visible or visible in the previous frame.
+	bool vis = LLViewerOctreeEntryData::isRecentlyVisible();
+
+	if(!vis)
 	{
-		mSpatialGroupp->setState(LLSpatialGroup::GEOM_DIRTY);
-	}*/
+		LLviewerOctreeGroup* group = getGroup();
+		if (group && group->isRecentlyVisible())
+		{
+			LLViewerOctreeEntryData::setVisible();
+			vis = TRUE ;
+		}
+	}
+
+	return vis ;
+}
+
+void LLDrawable::setGroup(LLviewerOctreeGroup *groupp)
+	{
+	LLSpatialGroup* cur_groupp = (LLSpatialGroup*)getGroup();
+    
+	//precondition: mGroupp MUST be null or DEAD or mGroupp MUST NOT contain this
+	//llassert(!cur_groupp || cur_groupp->isDead() || !cur_groupp->hasElement(this));
 
-	if (mSpatialGroupp != groupp && getVOVolume())
+	//precondition: groupp MUST be null or groupp MUST contain this
+	llassert(!groupp || (LLSpatialGroup*)groupp->hasElement(this));
+
+	if (cur_groupp != groupp && getVOVolume())
 	{ //NULL out vertex buffer references for volumes on spatial group change to maintain
 		//requirement that every face vertex buffer is either NULL or points to a vertex buffer
 		//contained by its drawable's spatial group
@@ -995,10 +1055,10 @@ void LLDrawable::setSpatialGroup(LLSpatialGroup *groupp)
 
 	//postcondition: if next group is NULL, previous group must be dead OR NULL OR binIndex must be -1
 	//postcondition: if next group is NOT NULL, binIndex must not be -1
-	llassert(groupp == NULL ? (mSpatialGroupp == NULL || mSpatialGroupp->isDead()) || getBinIndex() == -1 :
-							getBinIndex() != -1);
+	//llassert(groupp == NULL ? (cur_groupp == NULL || cur_groupp->isDead()) || (!getEntry() || getEntry()->getBinIndex() == -1) :
+	//						(getEntry() && getEntry()->getBinIndex() != -1));
 
-	mSpatialGroupp = groupp;
+	LLViewerOctreeEntryData::setGroup(groupp);
 }
 
 LLSpatialPartition* LLDrawable::getSpatialPartition()
@@ -1017,11 +1077,11 @@ LLSpatialPartition* LLDrawable::getSpatialPartition()
 		{
 			if (mVObjp->isHUDAttachment())
 			{
-				setSpatialBridge(new LLHUDBridge(this));
+				setSpatialBridge(new LLHUDBridge(this, getRegion()));
 			}
 			else
 			{
-				setSpatialBridge(new LLVolumeBridge(this));
+				setSpatialBridge(new LLVolumeBridge(this, getRegion()));
 			}
 		}
 		return mSpatialBridge->asPartition();
@@ -1040,89 +1100,26 @@ LLSpatialPartition* LLDrawable::getSpatialPartition()
 	return retval;
 }
 
-const S32 MIN_VIS_FRAME_RANGE = 2 ; //two frames:the current one and the last one.
-//static 
-S32 LLDrawable::getMinVisFrameRange()
-{
-	return MIN_VIS_FRAME_RANGE ;
-}
-
-BOOL LLDrawable::isRecentlyVisible() const
+//virtual
+S32 LLDrawable::getMinVisFrameRange() const
 {
-	//currently visible or visible in the previous frame.
-	BOOL vis = isVisible() || (sCurVisible - mVisible < MIN_VIS_FRAME_RANGE)  ;
-
-	if(!vis)
-	{
-		LLSpatialGroup* group = getSpatialGroup();
-		if (group && group->isRecentlyVisible())
-		{
-			mVisible = sCurVisible;
-			vis = TRUE ;
-		}
-	}
-
-	return vis ;
-}
-
-BOOL LLDrawable::isVisible() const
-{
-	if (mVisible == sCurVisible)
-	{
-		return TRUE;
-	}
-	
-#if 0
-	//disabling this code fixes DEV-20105.  Leaving in place in case some other bug pops up as a a result.
-	//should be safe to just always ask the spatial group for visibility.
-	if (isActive())
-	{
-		if (isRoot())
-		{
-			LLSpatialGroup* group = mSpatialBridge.notNull() ? mSpatialBridge->getSpatialGroup() :
-									getSpatialGroup();
-			if (group && group->isVisible())
-			{
-				mVisible = sCurVisible;
-				return TRUE;
-			}
-		}
-		else
-		{
-			if (getParent()->isVisible())
-			{
-				mVisible = sCurVisible;
-				return TRUE;
-			}
-		}
-	}
-	else
-#endif
-	{
-		LLSpatialGroup* group = getSpatialGroup();
-		if (group && group->isVisible())
-		{
-			mVisible = sCurVisible;
-			return TRUE;
-		}
-	}
+const S32 MIN_VIS_FRAME_RANGE = 2 ; //two frames:the current one and the last one.
 
-	return FALSE;
+	return MIN_VIS_FRAME_RANGE ;
 }
 
 //=======================================
 // Spatial Partition Bridging Drawable
 //=======================================
 
-LLSpatialBridge::LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask)
-: LLSpatialPartition(data_mask, render_by_group, GL_STREAM_DRAW_ARB)
+LLSpatialBridge::LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask, LLViewerRegion* regionp) : 
+	LLDrawable(root->getVObj(), true),
+	LLSpatialPartition(data_mask, render_by_group, GL_STREAM_DRAW_ARB, regionp)
 {
 	mBridge = this;
 	mDrawable = root;
 	root->setSpatialBridge(this);
 	
-	mBinIndex = -1;
-
 	mRenderType = mDrawable->mRenderType;
 	mDrawableType = mDrawable->mRenderType;
 	
@@ -1143,11 +1140,14 @@ LLSpatialBridge::LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 dat
 
 LLSpatialBridge::~LLSpatialBridge()
 {	
+	if(mEntry)
+	{
 	LLSpatialGroup* group = getSpatialGroup();
 	if (group)
 	{
 		group->mSpatialPartition->remove(this, group);
 	}
+	}
 
 	//delete octree here so listeners will still be able to access bridge specific state
 	destroyTree();
@@ -1168,8 +1168,9 @@ void LLSpatialBridge::updateSpatialExtents()
 		root->rebound();
 	}
 	
+	const LLVector4a* root_bounds = root->getBounds();
 	LLVector4a offset;
-	LLVector4a size = root->mBounds[1];
+	LLVector4a size = root_bounds[1];
 		
 	//VECTORIZE THIS
 	LLMatrix4a mat;
@@ -1181,7 +1182,7 @@ void LLSpatialBridge::updateSpatialExtents()
 	LLVector4a center;
 	mat.affineTransform(t, center);
 	
-	mat.rotate(root->mBounds[0], offset);
+	mat.rotate(root_bounds[0], offset);
 	center.add(offset);
 	
 	LLVector4a v[4];
@@ -1203,12 +1204,9 @@ void LLSpatialBridge::updateSpatialExtents()
 	scale.mul(size);
 	mat.rotate(scale, v[3]);
 
-	
-	LLVector4a& newMin = mExtents[0];
-	LLVector4a& newMax = mExtents[1];
-	
+	LLVector4a newMin;
+	LLVector4a newMax;	
 	newMin = newMax = center;
-	
 	for (U32 i = 0; i < 4; i++)
 	{
 		LLVector4a delta;
@@ -1221,19 +1219,21 @@ void LLSpatialBridge::updateSpatialExtents()
 		newMin.setMin(newMin, min);
 		newMax.setMax(newMax, max);
 	}
+	setSpatialExtents(newMin, newMax);
 	
 	LLVector4a diagonal;
 	diagonal.setSub(newMax, newMin);
 	mRadius = diagonal.getLength3().getF32() * 0.5f;
 	
-	mPositionGroup.setAdd(newMin,newMax);
-	mPositionGroup.mul(0.5f);
+	LLVector4a& pos = getGroupPosition();
+	pos.setAdd(newMin,newMax);
+	pos.mul(0.5f);
 	updateBinRadius();
 }
 
 void LLSpatialBridge::updateBinRadius()
 {
-	mBinRadius = llmin( mOctree->getSize()[0]*0.5f, 256.f);
+	setBinRadius(llmin( mOctree->getSize()[0]*0.5f, 256.f));
 }
 
 LLCamera LLSpatialBridge::transformCamera(LLCamera& camera)
@@ -1268,7 +1268,7 @@ LLCamera LLSpatialBridge::transformCamera(LLCamera& camera)
 
 void LLDrawable::setVisible(LLCamera& camera, std::vector<LLDrawable*>* results, BOOL for_select)
 {
-	mVisible = sCurVisible;
+	LLViewerOctreeEntryData::setVisible();
 	
 #if 0 && !LL_RELEASE_FOR_DOWNLOAD
 	//crazy paranoid rules checking
@@ -1303,21 +1303,21 @@ void LLDrawable::setVisible(LLCamera& camera, std::vector<LLDrawable*>* results,
 #endif
 }
 
-class LLOctreeMarkNotCulled: public LLOctreeTraveler<LLDrawable>
+class LLOctreeMarkNotCulled: public OctreeTraveler
 {
 public:
 	LLCamera* mCamera;
 	
 	LLOctreeMarkNotCulled(LLCamera* camera_in) : mCamera(camera_in) { }
 	
-	virtual void traverse(const LLOctreeNode<LLDrawable>* node)
+	virtual void traverse(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 		group->setVisible();
-		LLOctreeTraveler<LLDrawable>::traverse(node);
+		OctreeTraveler::traverse(node);
 	}
 	
-	void visit(const LLOctreeNode<LLDrawable>* branch)
+	void visit(const OctreeNode* branch)
 	{
 		gPipeline.markNotCulled((LLSpatialGroup*) branch->getListener(0), *mCamera);
 	}
@@ -1361,7 +1361,7 @@ void LLSpatialBridge::setVisible(LLCamera& camera_in, std::vector<LLDrawable*>*
 			}
 
 			if (!group ||
-				LLDrawable::getCurrentFrame() - av->mVisible > 1 ||
+				LLDrawable::getCurrentFrame() - av->getVisible() > 1 ||
 				impostor ||
 				!loaded)
 			{
@@ -1375,16 +1375,17 @@ void LLSpatialBridge::setVisible(LLCamera& camera_in, std::vector<LLDrawable*>*
 	group->rebound();
 	
 	LLVector4a center;
-	center.setAdd(mExtents[0], mExtents[1]);
+	const LLVector4a* exts = getSpatialExtents();
+	center.setAdd(exts[0], exts[1]);
 	center.mul(0.5f);
 	LLVector4a size;
-	size.setSub(mExtents[1], mExtents[0]);
+	size.setSub(exts[1], exts[0]);
 	size.mul(0.5f);
 
 	if ((LLPipeline::sShadowRender && camera_in.AABBInFrustum(center, size)) ||
 		LLPipeline::sImpostorRender ||
 		(camera_in.AABBInFrustumNoFarClip(center, size) && 
-		AABBSphereIntersect(mExtents[0], mExtents[1], camera_in.getOrigin(), camera_in.mFrustumCornerDist)))
+		AABBSphereIntersect(exts[0], exts[1], camera_in.getOrigin(), camera_in.mFrustumCornerDist)))
 	{
 		if (!LLPipeline::sImpostorRender &&
 			!LLPipeline::sShadowRender && 
@@ -1499,9 +1500,7 @@ BOOL LLSpatialBridge::updateMove()
 
 void LLSpatialBridge::shiftPos(const LLVector4a& vec)
 {
-	mExtents[0].add(vec);
-	mExtents[1].add(vec);
-	mPositionGroup.add(vec);
+	LLDrawable::shift(vec);
 }
 
 void LLSpatialBridge::cleanupReferences()
@@ -1509,11 +1508,8 @@ void LLSpatialBridge::cleanupReferences()
 	LLDrawable::cleanupReferences();
 	if (mDrawable)
 	{
-		/*
-		
-		DON'T DO THIS -- this should happen through octree destruction
+		mDrawable->setGroup(NULL);
 
-		mDrawable->setSpatialGroup(NULL);
 		if (mDrawable->getVObj())
 		{
 			LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
@@ -1524,10 +1520,10 @@ void LLSpatialBridge::cleanupReferences()
 				LLDrawable* drawable = child->mDrawable;					
 				if (drawable)
 				{
-					drawable->setSpatialGroup(NULL);
+					drawable->setGroup(NULL);				
+				}
 				}
 			}
-		}*/
 
 		LLDrawable* drawablep = mDrawable;
 		mDrawable = NULL;
@@ -1596,8 +1592,8 @@ void LLDrawable::updateFaceSize(S32 idx)
 	}
 }
 
-LLBridgePartition::LLBridgePartition()
-: LLSpatialPartition(0, FALSE, 0) 
+LLBridgePartition::LLBridgePartition(LLViewerRegion* regionp)
+: LLSpatialPartition(0, FALSE, 0, regionp) 
 { 
 	mDrawableType = LLPipeline::RENDER_TYPE_AVATAR; 
 	mPartitionType = LLViewerRegion::PARTITION_BRIDGE;
@@ -1605,8 +1601,8 @@ LLBridgePartition::LLBridgePartition()
 	mSlopRatio = 0.25f;
 }
 
-LLHUDBridge::LLHUDBridge(LLDrawable* drawablep)
-: LLVolumeBridge(drawablep)
+LLHUDBridge::LLHUDBridge(LLDrawable* drawablep, LLViewerRegion* regionp)
+: LLVolumeBridge(drawablep, regionp)
 {
 	mDrawableType = LLPipeline::RENDER_TYPE_HUD;
 	mPartitionType = LLViewerRegion::PARTITION_HUD;
diff --git a/indra/newview/lldrawable.h b/indra/newview/lldrawable.h
index 4608d16fec..26796b92d0 100644
--- a/indra/newview/lldrawable.h
+++ b/indra/newview/lldrawable.h
@@ -42,6 +42,7 @@
 #include "llviewerobject.h"
 #include "llrect.h"
 #include "llappviewer.h" // for gFrameTimeSeconds
+#include "llvieweroctree.h"
 
 class LLCamera;
 class LLDrawPool;
@@ -59,10 +60,12 @@ const U32 SILHOUETTE_HIGHLIGHT = 0;
 
 // All data for new renderer goes into this class.
 LL_ALIGN_PREFIX(16)
-class LLDrawable : public LLRefCount
+class LLDrawable 
+:	public LLViewerOctreeEntryData,
+	public LLTrace::MemTrackable<LLDrawable>
 {
 public:
-	LLDrawable(const LLDrawable& rhs)
+	LLDrawable(const LLDrawable& rhs) : LLViewerOctreeEntryData(rhs)
 	{
 		*this = rhs;
 	}
@@ -75,17 +78,7 @@ public:
 
 	static void initClass();
 
-	void* operator new(size_t size)
-	{
-		return ll_aligned_malloc_16(size);
-	}
-
-	void operator delete(void* ptr)
-	{
-		ll_aligned_free_16(ptr);
-	}
-
-	LLDrawable()				{ init(); }
+	LLDrawable(LLViewerObject *vobj, bool new_entry = false);
 	
 	void markDead();			// Mark this drawable as dead
 	BOOL isDead() const			{ return isState(DEAD); }
@@ -93,11 +86,9 @@ public:
 
 	BOOL isLight() const;
 
-	BOOL isVisible() const;	
-	BOOL isRecentlyVisible() const;	
 	virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, BOOL for_select = FALSE);
 
-
+	LLSpatialGroup* getSpatialGroup()const          {return (LLSpatialGroup*)getGroup();}
 	LLViewerRegion* getRegion()               const { return mVObjp->getRegion(); }
 	const LLTextureEntry* getTextureEntry(U8 which) const { return mVObjp->getTE(which); }
 	LLPointer<LLViewerObject>& getVObj()							  { return mVObjp; }
@@ -110,16 +101,12 @@ public:
 	const LLVector3&	  getPosition() const			{ return mXform.getPosition(); }
 	const LLVector3&      getWorldPosition() const		{ return mXform.getPositionW(); }
 	const LLVector3		  getPositionAgent() const;
-	const LLVector4a&	  getPositionGroup() const		{ return mPositionGroup; }
 	const LLVector3&	  getScale() const				{ return mCurrentScale; }
 	void				  setScale(const LLVector3& scale) { mCurrentScale = scale; }
 	const LLQuaternion&   getWorldRotation() const		{ return mXform.getWorldRotation(); }
 	const LLQuaternion&   getRotation() const			{ return mXform.getRotation(); }
 	F32			          getIntensity() const			{ return llmin(mXform.getScale().mV[0], 4.f); }
 	S32					  getLOD() const				{ return mVObjp ? mVObjp->getLOD() : 1; }
-	F32					  getBinRadius() const			{ return mBinRadius; }
-	S32					  getBinIndex() const			{ return mBinIndex; }
-	void				  setBinIndex(S32 index) const	{ mBinIndex = index; }
 
 	void  getMinMax(LLVector3& min,LLVector3& max) const { mXform.getMinMax(min,max); }
 	LLXformMatrix*		getXform() { return &mXform; }
@@ -150,7 +137,7 @@ public:
 	void                setNumFacesFast(const S32 numFaces, LLFacePool *poolp, LLViewerTexture *texturep);
 	void				mergeFaces(LLDrawable* src);
 
-	void init();
+	void init(bool new_entry);
 	void destroy();
 
 	void update();
@@ -181,8 +168,12 @@ public:
 	BOOL getLit() const							{ return isState(UNLIT) ? FALSE : TRUE; }
 	void setLit(BOOL lit)						{ lit ? clearState(UNLIT) : setState(UNLIT); }
 
+	bool isVisible() const;
+	bool isRecentlyVisible() const;
+
 	virtual void cleanupReferences();
 
+	void setGroup(LLviewerOctreeGroup* group);
 	void setRadius(const F32 radius);
 	F32 getRadius() const						{ return mRadius; }
 	F32 getVisibilityRadius() const;
@@ -192,11 +183,6 @@ public:
 	const LLVector3& getBounds(LLVector3& min, LLVector3& max) const;
 	virtual void updateSpatialExtents();
 	virtual void updateBinRadius();
-	const LLVector4a* getSpatialExtents() const;
-	void setSpatialExtents(const LLVector3& min, const LLVector3& max);
-	void setSpatialExtents(const LLVector4a& min, const LLVector4a& max);
-
-	void setPositionGroup(const LLVector4a& pos);
 	
 	void setRenderType(S32 type) 				{ mRenderType = type; }
 	BOOL isRenderType(S32 type) 				{ return mRenderType == type; }
@@ -205,10 +191,14 @@ public:
 	// Debugging methods
 	S32 findReferences(LLDrawable *drawablep); // Not const because of @#$! iterators...
 
-	void setSpatialGroup(LLSpatialGroup *groupp);
-	LLSpatialGroup *getSpatialGroup() const;
 	LLSpatialPartition* getSpatialPartition();
 	
+	virtual S32 getMinVisFrameRange()const;
+	void removeFromOctree();
+
+	void setSpatialBridge(LLSpatialBridge* bridge) { mSpatialBridge = (LLDrawable*) bridge; }
+	LLSpatialBridge* getSpatialBridge() { return (LLSpatialBridge*) (LLDrawable*) mSpatialBridge; }
+
 	// Statics
 	static void incrementVisible();
 	static void cleanupDeadDrawables();
@@ -293,10 +283,6 @@ public:
 		ACTIVE_CHILD	= 0x40000000,
 	} EDrawableFlags;
 
-private: //aligned members
-	LL_ALIGN_16(LLVector4a		mExtents[2]);
-	LL_ALIGN_16(LLVector4a		mPositionGroup);
-	
 public:
 	LLXformMatrix       mXform;
 
@@ -305,13 +291,8 @@ public:
 
 	F32				mDistanceWRTCamera;
 
-	static S32 getCurrentFrame() { return sCurVisible; }
-	static S32 getMinVisFrameRange();
-
-	void setSpatialBridge(LLSpatialBridge* bridge) { mSpatialBridge = (LLDrawable*) bridge; }
-	LLSpatialBridge* getSpatialBridge() { return (LLSpatialBridge*) (LLDrawable*) mSpatialBridge; }
-	
 	static F32 sCurPixelAngle; //current pixels per radian
+	static LLTrace::MemStatHandle sMemStat;
 
 private:
 	typedef std::vector<LLFace*> face_list_t;
@@ -320,19 +301,13 @@ private:
 	S32				mRenderType;
 	LLPointer<LLViewerObject> mVObjp;
 	face_list_t     mFaces;
-	LLSpatialGroup* mSpatialGroupp;
 	LLPointer<LLDrawable> mSpatialBridge;
 	
-	mutable U32		mVisible;
 	F32				mRadius;
-	F32				mBinRadius;
-	mutable S32		mBinIndex;
 	S32				mGeneration;
 	
 	LLVector3		mCurrentScale;
 	
-	static U32 sCurVisible; // Counter for what value of mVisible means currently visible
-
 	static U32 sNumZombieDrawables;
 	static LLDynamicArrayPtr<LLPointer<LLDrawable> > sDeadList;
 } LL_ALIGN_POSTFIX(16);
diff --git a/indra/newview/lldrawpoolwater.cpp b/indra/newview/lldrawpoolwater.cpp
index 4f6eaa5a5b..61f5ecc46f 100644
--- a/indra/newview/lldrawpoolwater.cpp
+++ b/indra/newview/lldrawpoolwater.cpp
@@ -463,7 +463,7 @@ void LLDrawPoolWater::renderReflection(LLFace* face)
 
 	gGL.getTexUnit(0)->bind(mHBTex[dr]);
 
-	LLOverrideFaceColor override(this, face->getFaceColor().mV);
+	LLOverrideFaceColor override(this, LLColor4(face->getFaceColor().mV));
 	face->renderIndexed();
 }
 
diff --git a/indra/newview/llface.h b/indra/newview/llface.h
index de4d03351c..15c9e7856f 100644
--- a/indra/newview/llface.h
+++ b/indra/newview/llface.h
@@ -262,11 +262,11 @@ public:
 	
 	LLVector2		mTexExtents[2];
 	F32				mDistance;
-	F32			mLastUpdateTime;
-	F32			mLastSkinTime;
-	F32			mLastMoveTime;
-	LLMatrix4*	mTextureMatrix;
-	LLDrawInfo* mDrawInfo;
+	F32				mLastUpdateTime;
+	F32				mLastSkinTime;
+	F32				mLastMoveTime;
+	LLMatrix4*		mTextureMatrix;
+	LLDrawInfo*		mDrawInfo;
 
 private:
 	LLPointer<LLVertexBuffer> mVertexBuffer;
diff --git a/indra/newview/llfasttimerview.cpp b/indra/newview/llfasttimerview.cpp
index 4dfb93f1bc..80d845c70e 100644
--- a/indra/newview/llfasttimerview.cpp
+++ b/indra/newview/llfasttimerview.cpp
@@ -46,7 +46,6 @@
 #include "llviewertexturelist.h"
 #include "llui.h"
 #include "llviewercontrol.h"
-#include "llstat.h"
 
 #include "llfasttimer.h"
 #include "lltreeiterators.h"
@@ -55,24 +54,23 @@
 
 //////////////////////////////////////////////////////////////////////////////
 
+using namespace LLTrace;
+
 static const S32 MAX_VISIBLE_HISTORY = 10;
 static const S32 LINE_GRAPH_HEIGHT = 240;
+static const S32 MIN_BAR_HEIGHT = 3;
 
-//static const int FTV_DISPLAY_NUM  = (sizeof(ft_display_table)/sizeof(ft_display_table[0]));
-static S32 FTV_NUM_TIMERS;
-const S32 FTV_MAX_DEPTH = 8;
-
-std::vector<LLFastTimer::NamedTimer*> ft_display_idx; // line of table entry for display purposes (for collapse)
+std::vector<TimeBlock*> ft_display_idx; // line of table entry for display purposes (for collapse)
 
-typedef LLTreeDFSIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_iterator_t;
+typedef LLTreeDFSIter<TimeBlock, TimeBlock::child_const_iter> timer_tree_iterator_t;
 
 BOOL LLFastTimerView::sAnalyzePerformance = FALSE;
 
-static timer_tree_iterator_t begin_timer_tree(LLFastTimer::NamedTimer& id) 
+static timer_tree_iterator_t begin_timer_tree(TimeBlock& id) 
 { 
 	return timer_tree_iterator_t(&id, 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1));
+							boost::bind(boost::mem_fn(&TimeBlock::beginChildren), _1), 
+							boost::bind(boost::mem_fn(&TimeBlock::endChildren), _1));
 }
 
 static timer_tree_iterator_t end_timer_tree() 
@@ -80,37 +78,74 @@ static timer_tree_iterator_t end_timer_tree()
 	return timer_tree_iterator_t(); 
 }
 
+S32 get_depth(const TimeBlock* blockp)
+{
+	S32 depth = 0;
+	TimeBlock* timerp = blockp->getParent();
+	while(timerp)
+	{
+		depth++;
+		if (timerp->getParent() == timerp) break;
+		timerp = timerp->getParent();
+	}
+	return depth;
+}
+
 LLFastTimerView::LLFastTimerView(const LLSD& key)
 :	LLFloater(key),
-	mHoverTimer(NULL)
+	mHoverTimer(NULL),
+	mDisplayMode(0),
+	mDisplayCenter(ALIGN_CENTER),
+	mDisplayCalls(false),
+	mDisplayHz(false),
+	mScrollIndex(0),
+	mHoverID(NULL),
+	mHoverBarIndex(-1),
+	mPrintStats(-1),
+	mRecording(&get_frame_recording()),
+	mPauseHistory(false)
 {
-	mDisplayMode = 0;
-	mAvgCountTotal = 0;
-	mMaxCountTotal = 0;
-	mDisplayCenter = ALIGN_CENTER;
-	mDisplayCalls = 0;
-	mDisplayHz = 0;
-	mScrollIndex = 0;
-	mHoverID = NULL;
-	mHoverBarIndex = -1;
-	FTV_NUM_TIMERS = LLFastTimer::NamedTimer::instanceCount();
-	mPrintStats = -1;	
+	mTimerBars = new std::vector<TimerBar>[MAX_VISIBLE_HISTORY + 1];
+}
+
+LLFastTimerView::~LLFastTimerView()
+{
+	if (mRecording != &get_frame_recording())
+	{
+		delete mRecording;
+	}
+	mRecording = NULL;
+	delete [] mTimerBars;
 }
 
 void LLFastTimerView::onPause()
 {
-	LLFastTimer::sPauseHistory = !LLFastTimer::sPauseHistory;
+	setPauseState(!mPauseHistory);
+}
+
+void LLFastTimerView::setPauseState(bool pause_state)
+{
+	if (pause_state == mPauseHistory) return;
+
 	// reset scroll to bottom when unpausing
-	if (!LLFastTimer::sPauseHistory)
+	if (!pause_state)
 	{
-		mScrollIndex = 0;
-		LLFastTimer::sResetHistory = true;
+		if (mRecording != &get_frame_recording())
+		{
+			delete mRecording;
+		}
+		mRecording = &get_frame_recording();
 		getChild<LLButton>("pause_btn")->setLabel(getString("pause"));
 	}
 	else
 	{
+		mRecording = new PeriodicRecording(get_frame_recording());
+		mScrollIndex = 0;
+
 		getChild<LLButton>("pause_btn")->setLabel(getString("run"));
 	}
+
+	mPauseHistory = pause_state;
 }
 
 BOOL LLFastTimerView::postBuild()
@@ -140,15 +175,15 @@ BOOL LLFastTimerView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 	{
 		S32 bar_idx = MAX_VISIBLE_HISTORY - ((y - mBarRect.mBottom) * (MAX_VISIBLE_HISTORY + 2) / mBarRect.getHeight());
 		bar_idx = llclamp(bar_idx, 0, MAX_VISIBLE_HISTORY);
-		mPrintStats = LLFastTimer::NamedTimer::HISTORY_NUM - mScrollIndex - bar_idx;
+		mPrintStats = mScrollIndex + bar_idx;
 		return TRUE;
 	}
 	return LLFloater::handleRightMouseDown(x, y, mask);
 }
 
-LLFastTimer::NamedTimer* LLFastTimerView::getLegendID(S32 y)
+TimeBlock* LLFastTimerView::getLegendID(S32 y)
 {
-	S32 idx = (getRect().getHeight() - y) / (LLFontGL::getFontMonospace()->getLineHeight()+2) - 5;
+	S32 idx = (mBarRect.mTop - y) / (LLFontGL::getFontMonospace()->getLineHeight()+2) - 1;
 
 	if (idx >= 0 && idx < (S32)ft_display_idx.size())
 	{
@@ -160,7 +195,7 @@ LLFastTimer::NamedTimer* LLFastTimerView::getLegendID(S32 y)
 
 BOOL LLFastTimerView::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-	for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
+	for(timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
 		it != end_timer_tree();
 		++it)
 	{
@@ -173,7 +208,7 @@ BOOL LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
 	if (x < mBarRect.mLeft) 
 	{
-		LLFastTimer::NamedTimer* idp = getLegendID(y);
+		TimeBlock* idp = getLegendID(y);
 		if (idp)
 		{
 			idp->setCollapsed(!idp->getCollapsed());
@@ -209,16 +244,7 @@ BOOL LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
 		gFocusMgr.setMouseCapture(this);
 		return TRUE;
 	}
-	//else
-	//{
-	//	// pause/unpause
-	//	LLFastTimer::sPauseHistory = !LLFastTimer::sPauseHistory;
-	//	// reset scroll to bottom when unpausing
-	//	if (!LLFastTimer::sPauseHistory)
-	//	{
-	//		mScrollIndex = 0;
-	//	}
-	//}
+
 	return LLFloater::handleMouseDown(x, y, mask);
 }
 
@@ -236,17 +262,18 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 	if (hasMouseCapture())
 	{
 		F32 lerp = llclamp(1.f - (F32) (x - mGraphRect.mLeft) / (F32) mGraphRect.getWidth(), 0.f, 1.f);
-		mScrollIndex = llround( lerp * (F32)(LLFastTimer::NamedTimer::HISTORY_NUM - MAX_VISIBLE_HISTORY));
-		mScrollIndex = llclamp(	mScrollIndex, 0, LLFastTimer::getLastFrameIndex());
+		mScrollIndex = llround( lerp * (F32)(mRecording->getNumPeriods() - MAX_VISIBLE_HISTORY));
+		mScrollIndex = llclamp(	mScrollIndex, 0, (S32)mRecording->getNumPeriods());
 		return TRUE;
 	}
 	mHoverTimer = NULL;
 	mHoverID = NULL;
 
-	if(LLFastTimer::sPauseHistory && mBarRect.pointInRect(x, y))
+	if(mPauseHistory && mBarRect.pointInRect(x, y))
 	{
-		mHoverBarIndex = llmin(LLFastTimer::getCurFrameIndex() - 1, 
-								MAX_VISIBLE_HISTORY - ((y - mBarRect.mBottom) * (MAX_VISIBLE_HISTORY + 2) / mBarRect.getHeight()));
+		mHoverBarIndex = llmin((mBarRect.mTop - y) / (mBarRect.getHeight() / (MAX_VISIBLE_HISTORY + 2)) - 1,
+								(S32)mRecording->getNumPeriods() - 1,
+								MAX_VISIBLE_HISTORY);
 		if (mHoverBarIndex == 0)
 		{
 			return TRUE;
@@ -257,13 +284,12 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 		}
 
 		S32 i = 0;
-		for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
+		for(timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
 			it != end_timer_tree();
 			++it, ++i)
 		{
 			// is mouse over bar for this timer?
-			if (x > mBarStart[mHoverBarIndex][i] &&
-				x < mBarEnd[mHoverBarIndex][i])
+			if (mTimerBars[mHoverBarIndex][i].mVisibleRect.pointInRect(x, y))
 			{
 				mHoverID = (*it);
 				if (mHoverTimer != *it)
@@ -275,10 +301,7 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 					mHoverTimer = (*it);
 				}
 
-				mToolTipRect.set(mBarStart[mHoverBarIndex][i], 
-					mBarRect.mBottom + llround(((F32)(MAX_VISIBLE_HISTORY - mHoverBarIndex + 1)) * ((F32)mBarRect.getHeight() / ((F32)MAX_VISIBLE_HISTORY + 2.f))),
-					mBarEnd[mHoverBarIndex][i],
-					mBarRect.mBottom + llround((F32)(MAX_VISIBLE_HISTORY - mHoverBarIndex) * ((F32)mBarRect.getHeight() / ((F32)MAX_VISIBLE_HISTORY + 2.f))));
+				mToolTipRect = mTimerBars[mHoverBarIndex][i].mVisibleRect;
 			}
 
 			if ((*it)->getCollapsed())
@@ -289,7 +312,7 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 	}
 	else if (x < mBarRect.mLeft) 
 	{
-		LLFastTimer::NamedTimer* timer_id = getLegendID(y);
+		TimeBlock* timer_id = getLegendID(y);
 		if (timer_id)
 		{
 			mHoverID = timer_id;
@@ -300,9 +323,24 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 }
 
 
+static std::string get_tooltip(TimeBlock& timer, S32 history_index, PeriodicRecording& frame_recording)
+{
+	std::string tooltip;
+	if (history_index == 0)
+	{
+		// by default, show average number of call
+		tooltip = llformat("%s (%d ms, %d calls)", timer.getName().c_str(), (S32)LLUnit<LLUnits::Milliseconds, F64>(frame_recording.getPeriodMean(timer)).value(), (S32)frame_recording.getPeriodMean(timer.callCount()));
+	}
+	else
+	{
+		tooltip = llformat("%s (%d ms, %d calls)", timer.getName().c_str(), (S32)LLUnit<LLUnits::Milliseconds, F64>(frame_recording.getPrevRecordingPeriod(history_index).getSum(timer)).value(), (S32)frame_recording.getPrevRecordingPeriod(history_index).getSum(timer.callCount()));
+	}
+	return tooltip;
+}
+
 BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
 {
-	if(LLFastTimer::sPauseHistory && mBarRect.pointInRect(x, y))
+	if(mPauseHistory && mBarRect.pointInRect(x, y))
 	{
 		// tooltips for timer bars
 		if (mHoverTimer)
@@ -310,8 +348,10 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
 			LLRect screen_rect;
 			localRectToScreen(mToolTipRect, &screen_rect);
 
+			std::string tooltip = get_tooltip(*mHoverTimer, mHoverBarIndex > 0 ? mScrollIndex + mHoverBarIndex : 0, *mRecording);
+
 			LLToolTipMgr::instance().show(LLToolTip::Params()
-				.message(mHoverTimer->getToolTip(LLFastTimer::NamedTimer::HISTORY_NUM - mScrollIndex - mHoverBarIndex))
+				.message(tooltip)
 				.sticky_rect(screen_rect)
 				.delay_time(0.f));
 
@@ -323,10 +363,10 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
 		// tooltips for timer legend
 		if (x < mBarRect.mLeft) 
 		{
-			LLFastTimer::NamedTimer* idp = getLegendID(y);
+			TimeBlock* idp = getLegendID(y);
 			if (idp)
 			{
-				LLToolTipMgr::instance().show(idp->getToolTip());
+				LLToolTipMgr::instance().show(get_tooltip(*idp, 0, *mRecording));
 
 				return TRUE;
 			}
@@ -338,707 +378,54 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
 
 BOOL LLFastTimerView::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
-	LLFastTimer::sPauseHistory = TRUE;
+	setPauseState(true);
 	mScrollIndex = llclamp(	mScrollIndex + clicks,
 							0,
-							llmin(LLFastTimer::getLastFrameIndex(), (S32)LLFastTimer::NamedTimer::HISTORY_NUM - MAX_VISIBLE_HISTORY));
+							llmin((S32)mRecording->getNumPeriods(), (S32)mRecording->getNumPeriods() - MAX_VISIBLE_HISTORY));
 	return TRUE;
 }
 
-static LLFastTimer::DeclareTimer FTM_RENDER_TIMER("Timers", true);
+static TimeBlock FTM_RENDER_TIMER("Timers", true);
+static const S32 MARGIN = 10;
+static const S32 LEGEND_WIDTH = 220;
 
-static std::map<LLFastTimer::NamedTimer*, LLColor4> sTimerColors;
+static std::map<TimeBlock*, LLColor4> sTimerColors;
 
 void LLFastTimerView::draw()
 {
 	LLFastTimer t(FTM_RENDER_TIMER);
 	
-	std::string tdesc;
-
-	F64 clock_freq = (F64)LLFastTimer::countsPerSecond();
-	F64 iclock_freq = 1000.0 / clock_freq;
-	
-	S32 margin = 10;
-	S32 height = getRect().getHeight();
-	S32 width = getRect().getWidth();
-	
-	LLRect new_rect;
-	new_rect.setLeftTopAndSize(getRect().mLeft, getRect().mTop, width, height);
-	setRect(new_rect);
-
-	S32 left, top, right, bottom;
-	S32 x, y, barw, barh, dx, dy;
-	S32 texth, textw;
-	LLPointer<LLUIImage> box_imagep = LLUI::getUIImage("Rounded_Square");
+	generateUniqueColors();
 
 	// Draw the window background
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4(0.f, 0.f, 0.f, 0.25f));
-	
-	S32 xleft = margin;
-	S32 ytop = margin;
+	gl_rect_2d(getLocalRect(), LLColor4(0.f, 0.f, 0.f, 0.25f));
 	
-	// Draw some help
-	{
-		
-		x = xleft;
-		y = height - ytop;
-		texth = (S32)LLFontGL::getFontMonospace()->getLineHeight();
-
-		char modedesc[][32] = {
-			"2 x Average ",
-			"Max         ",
-			"Recent Max  ",
-			"100 ms      "
-		};
-		char centerdesc[][32] = {
-			"Left      ",
-			"Centered  ",
-			"Ordered   "
-		};
-
-		tdesc = llformat("Full bar = %s [Click to pause/reset] [SHIFT-Click to toggle]",modedesc[mDisplayMode]);
-		LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
-		textw = LLFontGL::getFontMonospace()->getWidth(tdesc);
-
-		x = xleft, y -= (texth + 2);
-		tdesc = llformat("Justification = %s [CTRL-Click to toggle]",centerdesc[mDisplayCenter]);
-		LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
-		y -= (texth + 2);
-
-		LLFontGL::getFontMonospace()->renderUTF8(std::string("[Right-Click log selected] [ALT-Click toggle counts] [ALT-SHIFT-Click sub hidden]"),
-										 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
-		y -= (texth + 2);
-	}
-
-	S32 histmax = llmin(LLFastTimer::getLastFrameIndex()+1, MAX_VISIBLE_HISTORY);
-		
-	// Draw the legend
-	xleft = margin;
-	ytop = y;
-
-	y -= (texth + 2);
-
-	sTimerColors[&getFrameTimer()] = LLColor4::grey;
-
-	F32 hue = 0.f;
-
-	for (timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-		it != timer_tree_iterator_t();
-		++it)
-	{
-		LLFastTimer::NamedTimer* idp = (*it);
-
-		const F32 HUE_INCREMENT = 0.23f;
-		hue = fmodf(hue + HUE_INCREMENT, 1.f);
-		// saturation increases with depth
-		F32 saturation = clamp_rescale((F32)idp->getDepth(), 0.f, 3.f, 0.f, 1.f);
-		// lightness alternates with depth
-		F32 lightness = idp->getDepth() % 2 ? 0.5f : 0.6f;
-
-		LLColor4 child_color;
-		child_color.setHSL(hue, saturation, lightness);
-
-		sTimerColors[idp] = child_color;
-	}
-
-	const S32 LEGEND_WIDTH = 220;
-	{
-		LLLocalClipRect clip(LLRect(margin, y, LEGEND_WIDTH, margin));
-		S32 cur_line = 0;
-		ft_display_idx.clear();
-		std::map<LLFastTimer::NamedTimer*, S32> display_line;
-		for (timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-			it != timer_tree_iterator_t();
-			++it)
-		{
-			LLFastTimer::NamedTimer* idp = (*it);
-			display_line[idp] = cur_line;
-			ft_display_idx.push_back(idp);
-			cur_line++;
-
-			x = xleft;
-
-			left = x; right = x + texth;
-			top = y; bottom = y - texth;
-			S32 scale_offset = 0;
-			if (idp == mHoverID)
-			{
-				scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 2.f);
-			}
-			gl_rect_2d(left - scale_offset, top + scale_offset, right + scale_offset, bottom - scale_offset, sTimerColors[idp]);
-
-			F32 ms = 0;
-			S32 calls = 0;
-			if (mHoverBarIndex > 0 && mHoverID)
-			{
-				S32 hidx = LLFastTimer::NamedTimer::HISTORY_NUM - mScrollIndex - mHoverBarIndex;
-				U64 ticks = idp->getHistoricalCount(hidx);
-				ms = (F32)((F64)ticks * iclock_freq);
-				calls = (S32)idp->getHistoricalCalls(hidx);
-			}
-			else
-			{
-				U64 ticks = idp->getCountAverage();
-				ms = (F32)((F64)ticks * iclock_freq);
-				calls = (S32)idp->getCallAverage();
-			}
-
-			if (mDisplayCalls)
-			{
-				tdesc = llformat("%s (%d)",idp->getName().c_str(),calls);
-			}
-			else
-			{
-				tdesc = llformat("%s [%.1f]",idp->getName().c_str(),ms);
-			}
-			dx = (texth+4) + idp->getDepth()*8;
-
-			LLColor4 color = LLColor4::white;
-			if (idp->getDepth() > 0)
-			{
-				S32 line_start_y = (top + bottom) / 2;
-				S32 line_end_y = line_start_y + ((texth + 2) * (cur_line - display_line[idp->getParent()])) - texth;
-				gl_line_2d(x + dx - 8, line_start_y, x + dx, line_start_y, color);
-				S32 line_x = x + (texth + 4) + ((idp->getDepth() - 1) * 8);
-				gl_line_2d(line_x, line_start_y, line_x, line_end_y, color);
-				if (idp->getCollapsed() && !idp->getChildren().empty())
-				{
-					gl_line_2d(line_x+4, line_start_y-3, line_x+4, line_start_y+4, color);
-				}
-			}
-
-			x += dx;
-			BOOL is_child_of_hover_item = (idp == mHoverID);
-			LLFastTimer::NamedTimer* next_parent = idp->getParent();
-			while(!is_child_of_hover_item && next_parent)
-			{
-				is_child_of_hover_item = (mHoverID == next_parent);
-				if (next_parent->getParent() == next_parent) break;
-				next_parent = next_parent->getParent();
-			}
-
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, 
-											x, y, 
-											color, 
-											LLFontGL::LEFT, LLFontGL::TOP, 
-											is_child_of_hover_item ? LLFontGL::BOLD : LLFontGL::NORMAL);
-
-			y -= (texth + 2);
-
-			textw = dx + LLFontGL::getFontMonospace()->getWidth(idp->getName()) + 40;
-
-			if (idp->getCollapsed()) 
-			{
-				it.skipDescendants();
-			}
-		}
-	}
-
-	xleft += LEGEND_WIDTH + 8;
-	// ytop = ytop;
+	S32 y = drawHelp(getRect().getHeight() - MARGIN);
+	drawLegend(y - ((S32)LLFontGL::getFontMonospace()->getLineHeight() + 2));
 
 	// update rectangle that includes timer bars
-	mBarRect.mLeft = xleft;
-	mBarRect.mRight = getRect().getWidth();
-	mBarRect.mTop = ytop - (LLFontGL::getFontMonospace()->getLineHeight() + 4);
-	mBarRect.mBottom = margin + LINE_GRAPH_HEIGHT;
-
-	y = ytop;
-	barh = (ytop - margin - LINE_GRAPH_HEIGHT) / (MAX_VISIBLE_HISTORY + 2);
-	dy = barh>>2; // spacing between bars
-	if (dy < 1) dy = 1;
-	barh -= dy;
-	barw = width - xleft - margin;
-
-	// Draw the history bars
-	if (LLFastTimer::getLastFrameIndex() >= 0)
-	{	
-		LLLocalClipRect clip(LLRect(xleft, ytop, getRect().getWidth() - margin, margin));
-
-		U64 totalticks;
-		if (!LLFastTimer::sPauseHistory)
-		{
-			U64 ticks = getFrameTimer().getHistoricalCount(mScrollIndex);
-
-			if (LLFastTimer::getCurFrameIndex() >= 10)
-			{
-				U64 framec = LLFastTimer::getCurFrameIndex();
-				U64 avg = (U64)mAvgCountTotal;
-				mAvgCountTotal = (avg*framec + ticks) / (framec + 1);
-				if (ticks > mMaxCountTotal)
-				{
-					mMaxCountTotal = ticks;
-				}
-			}
-
-			if (ticks < mAvgCountTotal/100 || ticks > mAvgCountTotal*100)
-			{
-				LLFastTimer::sResetHistory = true;
-			}
-
-			if (LLFastTimer::getCurFrameIndex() < 10 || LLFastTimer::sResetHistory)
-			{
-				mAvgCountTotal = ticks;
-				mMaxCountTotal = ticks;
-				LLFastTimer::sResetHistory = false;
-			}
-		}
-
-		if (mDisplayMode == 0)
-		{
-			totalticks = mAvgCountTotal*2;
-		}
-		else if (mDisplayMode == 1)
-		{
-			totalticks = mMaxCountTotal;
-		}
-		else if (mDisplayMode == 2)
-		{
-			// Calculate the max total ticks for the current history
-			totalticks = 0;
-			for (S32 j=0; j<histmax; j++)
-			{
-				U64 ticks = getFrameTimer().getHistoricalCount(j);
-
-				if (ticks > totalticks)
-					totalticks = ticks;
-			}
-		}
-		else
-		{
-			totalticks = (U64)(clock_freq * .1); // 100 ms
-		}
-		
-		// Draw MS ticks
-		{
-			U32 ms = (U32)((F64)totalticks * iclock_freq) ;
-
-			tdesc = llformat("%.1f ms |", (F32)ms*.25f);
-			x = xleft + barw/4 - LLFontGL::getFontMonospace()->getWidth(tdesc);
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white,
-										 LLFontGL::LEFT, LLFontGL::TOP);
-			
-			tdesc = llformat("%.1f ms |", (F32)ms*.50f);
-			x = xleft + barw/2 - LLFontGL::getFontMonospace()->getWidth(tdesc);
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white,
-										 LLFontGL::LEFT, LLFontGL::TOP);
-			
-			tdesc = llformat("%.1f ms |", (F32)ms*.75f);
-			x = xleft + (barw*3)/4 - LLFontGL::getFontMonospace()->getWidth(tdesc);
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white,
-										 LLFontGL::LEFT, LLFontGL::TOP);
-			
-			tdesc = llformat( "%d ms |", ms);
-			x = xleft + barw - LLFontGL::getFontMonospace()->getWidth(tdesc);
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white,
-										 LLFontGL::LEFT, LLFontGL::TOP);
-		}
-
-		// Draw borders
-		{
-			gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-			gGL.color4f(0.5f,0.5f,0.5f,0.5f);
-
-			S32 by = y + 2;
-			
-			y -= ((S32)LLFontGL::getFontMonospace()->getLineHeight() + 4);
-
-			//heading
-			gl_rect_2d(xleft-5, by, getRect().getWidth()-5, y+5, FALSE);
-
-			//tree view
-			gl_rect_2d(5, by, xleft-10, 5, FALSE);
-
-			by = y + 5;
-			//average bar
-			gl_rect_2d(xleft-5, by, getRect().getWidth()-5, by-barh-dy-5, FALSE);
-			
-			by -= barh*2+dy;
-			
-			//current frame bar
-			gl_rect_2d(xleft-5, by, getRect().getWidth()-5, by-barh-dy-2, FALSE);
-			
-			by -= barh+dy+1;
-			
-			//history bars
-			gl_rect_2d(xleft-5, by, getRect().getWidth()-5, LINE_GRAPH_HEIGHT-barh-dy-2, FALSE);			
-			
-			by = LINE_GRAPH_HEIGHT-barh-dy-7;
-			
-			//line graph
-			mGraphRect = LLRect(xleft-5, by, getRect().getWidth()-5, 5);
-			
-			gl_rect_2d(mGraphRect, FALSE);
-		}
-		
-		mBarStart.clear();
-		mBarEnd.clear();
-
-		// Draw bars for each history entry
-		// Special: -1 = show running average
-		gGL.getTexUnit(0)->bind(box_imagep->getImage());
-		for (S32 j=-1; j<histmax && y > LINE_GRAPH_HEIGHT; j++)
-		{
-			mBarStart.push_back(std::vector<S32>());
-			mBarEnd.push_back(std::vector<S32>());
-			int sublevel_dx[FTV_MAX_DEPTH];
-			int sublevel_left[FTV_MAX_DEPTH];
-			int sublevel_right[FTV_MAX_DEPTH];
-			S32 tidx;
-			if (j >= 0)
-			{
-				tidx = LLFastTimer::NamedTimer::HISTORY_NUM - j - 1 - mScrollIndex;
-			}
-			else
-			{
-				tidx = -1;
-			}
-			
-			x = xleft;
-			
-			// draw the bars for each stat
-			std::vector<S32> xpos;
-			std::vector<S32> deltax;
-			xpos.push_back(xleft);
-			
-			LLFastTimer::NamedTimer* prev_id = NULL;
-
-			S32 i = 0;
-			for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-				it != end_timer_tree();
-				++it, ++i)
-			{
-				LLFastTimer::NamedTimer* idp = (*it);
-				F32 frac = tidx == -1
-					? (F32)idp->getCountAverage() / (F32)totalticks 
-					: (F32)idp->getHistoricalCount(tidx) / (F32)totalticks;
-		
-				dx = llround(frac * (F32)barw);
-				S32 prev_delta_x = deltax.empty() ? 0 : deltax.back();
-				deltax.push_back(dx);
-				
-				int level = idp->getDepth() - 1;
-				
-				while ((S32)xpos.size() > level + 1)
-				{
-					xpos.pop_back();
-				}
-				left = xpos.back();
-				
-				if (level == 0)
-				{
-					sublevel_left[level] = xleft;
-					sublevel_dx[level] = dx;
-					sublevel_right[level] = sublevel_left[level] + sublevel_dx[level];
-				}
-				else if (prev_id && prev_id->getDepth() < idp->getDepth())
-				{
-					U64 sublevelticks = 0;
-
-					for (LLFastTimer::NamedTimer::child_const_iter it = prev_id->beginChildren();
-						it != prev_id->endChildren();
-						++it)
-					{
-						sublevelticks += (tidx == -1)
-							? (*it)->getCountAverage() 
-							: (*it)->getHistoricalCount(tidx);
-					}
-
-					F32 subfrac = (F32)sublevelticks / (F32)totalticks;
-					sublevel_dx[level] = (int)(subfrac * (F32)barw + .5f);
-
-					if (mDisplayCenter == ALIGN_CENTER)
-					{
-						left += (prev_delta_x - sublevel_dx[level])/2;
-					}
-					else if (mDisplayCenter == ALIGN_RIGHT)
-					{
-						left += (prev_delta_x - sublevel_dx[level]);
-					}
-
-					sublevel_left[level] = left;
-					sublevel_right[level] = sublevel_left[level] + sublevel_dx[level];
-				}				
-
-				right = left + dx;
-				xpos.back() = right;
-				xpos.push_back(left);
-				
-				mBarStart.back().push_back(left);
-				mBarEnd.back().push_back(right);
-
-				top = y;
-				bottom = y - barh;
-
-				if (right > left)
-				{
-					//U32 rounded_edges = 0;
-					LLColor4 color = sTimerColors[idp];//*ft_display_table[i].color;
-					S32 scale_offset = 0;
-
-					BOOL is_child_of_hover_item = (idp == mHoverID);
-					LLFastTimer::NamedTimer* next_parent = idp->getParent();
-					while(!is_child_of_hover_item && next_parent)
-					{
-						is_child_of_hover_item = (mHoverID == next_parent);
-						if (next_parent->getParent() == next_parent) break;
-						next_parent = next_parent->getParent();
-					}
-
-					if (idp == mHoverID)
-					{
-						scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 3.f);
-						//color = lerp(color, LLColor4::black, -0.4f);
-					}
-					else if (mHoverID != NULL && !is_child_of_hover_item)
-					{
-						color = lerp(color, LLColor4::grey, 0.8f);
-					}
-
-					gGL.color4fv(color.mV);
-					F32 start_fragment = llclamp((F32)(left - sublevel_left[level]) / (F32)sublevel_dx[level], 0.f, 1.f);
-					F32 end_fragment = llclamp((F32)(right - sublevel_left[level]) / (F32)sublevel_dx[level], 0.f, 1.f);
-					gl_segmented_rect_2d_fragment_tex(sublevel_left[level], top - level + scale_offset, sublevel_right[level], bottom + level - scale_offset, box_imagep->getTextureWidth(), box_imagep->getTextureHeight(), 16, start_fragment, end_fragment);
-
-				}
-
-				if ((*it)->getCollapsed())
-				{
-					it.skipDescendants();
-				}
-		
-				prev_id = idp;
-			}
-			y -= (barh + dy);
-			if (j < 0)
-				y -= barh;
-		}
-		
-		//draw line graph history
-		{
-			gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-			LLLocalClipRect clip(mGraphRect);
-			
-			//normalize based on last frame's maximum
-			static U64 last_max = 0;
-			static F32 alpha_interp = 0.f;
-			U64 max_ticks = llmax(last_max, (U64) 1);			
-			F32 ms = (F32)((F64)max_ticks * iclock_freq);
-			
-			//display y-axis range
-			std::string tdesc;
-			 if (mDisplayCalls)
-				tdesc = llformat("%d calls", (int)max_ticks);
-			else if (mDisplayHz)
-				tdesc = llformat("%d Hz", (int)max_ticks);
-			else
-				tdesc = llformat("%4.2f ms", ms);
-							
-			x = mGraphRect.mRight - LLFontGL::getFontMonospace()->getWidth(tdesc)-5;
-			y = mGraphRect.mTop - LLFontGL::getFontMonospace()->getLineHeight();
- 
-			LLFontGL::getFontMonospace()->renderUTF8(tdesc, 0, x, y, LLColor4::white,
-										 LLFontGL::LEFT, LLFontGL::TOP);
-
-			//highlight visible range
-			{
-				S32 first_frame = LLFastTimer::NamedTimer::HISTORY_NUM - mScrollIndex;
-				S32 last_frame = first_frame - MAX_VISIBLE_HISTORY;
-				
-				F32 frame_delta = ((F32) (mGraphRect.getWidth()))/(LLFastTimer::NamedTimer::HISTORY_NUM-1);
-				
-				F32 right = (F32) mGraphRect.mLeft + frame_delta*first_frame;
-				F32 left = (F32) mGraphRect.mLeft + frame_delta*last_frame;
-				
-				gGL.color4f(0.5f,0.5f,0.5f,0.3f);
-				gl_rect_2d((S32) left, mGraphRect.mTop, (S32) right, mGraphRect.mBottom);
-				
-				if (mHoverBarIndex >= 0)
-				{
-					S32 bar_frame = first_frame - mHoverBarIndex;
-					F32 bar = (F32) mGraphRect.mLeft + frame_delta*bar_frame;
-
-					gGL.color4f(0.5f,0.5f,0.5f,1);
-				
-					gGL.begin(LLRender::LINES);
-					gGL.vertex2i((S32)bar, mGraphRect.mBottom);
-					gGL.vertex2i((S32)bar, mGraphRect.mTop);
-					gGL.end();
-				}
-			}
-			
-			U64 cur_max = 0;
-			for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-				it != end_timer_tree();
-				++it)
-			{
-				LLFastTimer::NamedTimer* idp = (*it);
-				
-				//fatten highlighted timer
-				if (mHoverID == idp)
-				{
-					gGL.flush();
-					glLineWidth(3);
-				}
-			
-				const F32 * col = sTimerColors[idp].mV;// ft_display_table[idx].color->mV;
-				
-				F32 alpha = 1.f;
-				
-				if (mHoverID != NULL &&
-					idp != mHoverID)
-				{	//fade out non-highlighted timers
-					if (idp->getParent() != mHoverID)
-					{
-						alpha = alpha_interp;
-					}
-				}
-
-				gGL.color4f(col[0], col[1], col[2], alpha);				
-				gGL.begin(LLRender::TRIANGLE_STRIP);
-				for (U32 j = llmax(0, LLFastTimer::NamedTimer::HISTORY_NUM - LLFastTimer::getLastFrameIndex());
-					j < LLFastTimer::NamedTimer::HISTORY_NUM;
-					j++)
-				{
-					U64 ticks = idp->getHistoricalCount(j);
-
-					if (mDisplayHz)
-					{
-						F64 tc = (F64) (ticks+1) * iclock_freq;
-						tc = 1000.f/tc;
-						ticks = llmin((U64) tc, (U64) 1024);
-					}
-					else if (mDisplayCalls)
-					{
-						ticks = (S32)idp->getHistoricalCalls(j);
-					}
-										
-					if (alpha == 1.f)
-					{ 
-						//normalize to highlighted timer
-						cur_max = llmax(cur_max, ticks);
-					}
-					F32 x = mGraphRect.mLeft + ((F32) (mGraphRect.getWidth()))/(LLFastTimer::NamedTimer::HISTORY_NUM-1)*j;
-					F32 y = mGraphRect.mBottom + (F32) mGraphRect.getHeight()/max_ticks*ticks;
-					gGL.vertex2f(x,y);
-					gGL.vertex2f(x,mGraphRect.mBottom);
-				}
-				gGL.end();
-				
-				if (mHoverID == idp)
-				{
-					gGL.flush();
-					glLineWidth(1);
-				}
-
-				if (idp->getCollapsed())
-				{	
-					//skip hidden timers
-					it.skipDescendants();
-				}
-			}
-			
-			//interpolate towards new maximum
-			last_max = (U64) lerp((F32)last_max, (F32) cur_max, LLCriticalDamp::getInterpolant(0.1f));
-			if (last_max - cur_max <= 1 ||  cur_max - last_max  <= 1)
-			{
-				last_max = cur_max;
-			}
-			F32 alpha_target = last_max > cur_max ?
-								llmin((F32) last_max/ (F32) cur_max - 1.f,1.f) :
-								llmin((F32) cur_max/ (F32) last_max - 1.f,1.f);
-			alpha_interp = lerp(alpha_interp, alpha_target, LLCriticalDamp::getInterpolant(0.1f));
-
-			if (mHoverID != NULL)
-			{
-				x = (mGraphRect.mRight + mGraphRect.mLeft)/2;
-				y = mGraphRect.mBottom + 8;
-
-				LLFontGL::getFontMonospace()->renderUTF8(
-					mHoverID->getName(), 
-					0, 
-					x, y, 
-					LLColor4::white,
-					LLFontGL::LEFT, LLFontGL::BOTTOM);
-			}					
-		}
-	}
-
-	// Output stats for clicked bar to log
-	if (mPrintStats >= 0)
-	{
-		std::string legend_stat;
-		bool first = true;
-		for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-			it != end_timer_tree();
-			++it)
-		{
-			LLFastTimer::NamedTimer* idp = (*it);
-
-			if (!first)
-			{
-				legend_stat += ", ";
-			}
-			first = false;
-			legend_stat += idp->getName();
-
-			if (idp->getCollapsed())
-			{
-				it.skipDescendants();
-			}
-		}
-		llinfos << legend_stat << llendl;
-
-		std::string timer_stat;
-		first = true;
-		for(timer_tree_iterator_t it = begin_timer_tree(getFrameTimer());
-			it != end_timer_tree();
-			++it)
-		{
-			LLFastTimer::NamedTimer* idp = (*it);
-
-			if (!first)
-			{
-				timer_stat += ", ";
-			}
-			first = false;
-
-			U64 ticks;
-			if (mPrintStats > 0)
-			{
-				ticks = idp->getHistoricalCount(mPrintStats);
-			}
-			else
-			{
-				ticks = idp->getCountAverage();
-			}
-			F32 ms = (F32)((F64)ticks * iclock_freq);
+	const S32 LEGEND_WIDTH = 220;
 
-			timer_stat += llformat("%.1f",ms);
+	mBarRect.mLeft = MARGIN + LEGEND_WIDTH + 8;
+	mBarRect.mTop = y;
+	mBarRect.mRight = getRect().getWidth() - MARGIN;
+	mBarRect.mBottom = MARGIN + LINE_GRAPH_HEIGHT;
 
-			if (idp->getCollapsed())
-			{
-				it.skipDescendants();
-			}
-		}
-		llinfos << timer_stat << llendl;
-		mPrintStats = -1;
-	}
+	drawBars();
+	drawLineGraph();
+	printLineStats();
+	LLView::draw();
 		
+	mAllTimeMax = llmax(mAllTimeMax, mRecording->getLastRecordingPeriod().getSum(FTM_FRAME));
 	mHoverID = NULL;
 	mHoverBarIndex = -1;
-
-	LLView::draw();
 }
 
 F64 LLFastTimerView::getTime(const std::string& name)
 {
-	const LLFastTimer::NamedTimer* timerp = LLFastTimer::getTimerByName(name);
-	if (timerp)
-	{
-		return (F64)timerp->getCountAverage() / (F64)LLFastTimer::countsPerSecond();
-	}
+	//TODO: replace calls to this with use of timer object directly
+	//llstatic_assert(false, "TODO: implement");
 	return 0.0;
 }
 
@@ -1536,13 +923,13 @@ void LLFastTimerView::outputAllMetrics()
 //static
 void LLFastTimerView::doAnalysis(std::string baseline, std::string target, std::string output)
 {
-	if(LLFastTimer::sLog)
+	if(TimeBlock::sLog)
 	{
 		doAnalysisDefault(baseline, target, output) ;
 		return ;
 	}
 
-	if(LLFastTimer::sMetricLog)
+	if(TimeBlock::sMetricLog)
 	{
 		LLMetricPerformanceTesterBasic::doAnalysisMetrics(baseline, target, output) ;
 		return ;
@@ -1553,9 +940,660 @@ void	LLFastTimerView::onClickCloseBtn()
 	setVisible(false);
 }
 
-LLFastTimer::NamedTimer& LLFastTimerView::getFrameTimer()
+void LLFastTimerView::printLineStats()
 {
-	return FTM_FRAME.getNamedTimer();
+	// Output stats for clicked bar to log
+	if (mPrintStats >= 0)
+	{
+		std::string legend_stat;
+		bool first = true;
+		for(timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
+			it != end_timer_tree();
+			++it)
+		{
+			TimeBlock* idp = (*it);
+
+			if (!first)
+			{
+				legend_stat += ", ";
+			}
+			first = false;
+			legend_stat += idp->getName();
+
+			if (idp->getCollapsed())
+			{
+				it.skipDescendants();
+			}
+		}
+		llinfos << legend_stat << llendl;
+
+		std::string timer_stat;
+		first = true;
+		for(timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
+			it != end_timer_tree();
+			++it)
+		{
+			TimeBlock* idp = (*it);
+
+			if (!first)
+			{
+				timer_stat += ", ";
+			}
+			first = false;
+
+			LLUnit<LLUnits::Seconds, F32> ticks;
+			if (mPrintStats > 0)
+			{
+				ticks = mRecording->getPrevRecordingPeriod(mPrintStats).getSum(*idp);
+			}
+			else
+			{
+				ticks = mRecording->getPeriodMean(*idp);
+			}
+			LLUnit<LLUnits::Milliseconds, F32> ms = ticks;
+
+			timer_stat += llformat("%.1f",ms.value());
+
+			if (idp->getCollapsed())
+			{
+				it.skipDescendants();
+			}
+		}
+		llinfos << timer_stat << llendl;
+		mPrintStats = -1;
+	}
 }
 
+static LLFastTimer::DeclareTimer FTM_DRAW_LINE_GRAPH("Draw line graph");
+
+void LLFastTimerView::drawLineGraph()
+{
+	LLFastTimer _(FTM_DRAW_LINE_GRAPH);
+	//draw line graph history
+	S32 x = mBarRect.mLeft;
+	S32 y = LINE_GRAPH_HEIGHT;
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	LLLocalClipRect clip(mGraphRect);
+
+	//normalize based on last frame's maximum
+	static LLUnit<LLUnits::Seconds, F32> max_time = 0.000001;
+	static U32 max_calls = 0;
+	static F32 alpha_interp = 0.f;
+
+	//display y-axis range
+	std::string axis_label;
+	if (mDisplayCalls)
+		axis_label = llformat("%d calls", (int)max_calls);
+	else if (mDisplayHz)
+		axis_label = llformat("%d Hz", (int)(1.f / max_time.value()));
+	else
+		axis_label = llformat("%4.2f ms", LLUnit<LLUnits::Milliseconds, F32>(max_time).value());
+
+	x = mGraphRect.mRight - LLFontGL::getFontMonospace()->getWidth(axis_label)-5;
+	y = mGraphRect.mTop - LLFontGL::getFontMonospace()->getLineHeight();
+
+	LLFontGL::getFontMonospace()->renderUTF8(axis_label, 0, x, y, LLColor4::white,
+		LLFontGL::LEFT, LLFontGL::TOP);
+
+	//highlight visible range
+	{
+		S32 first_frame = mRecording->getNumPeriods() - mScrollIndex;
+		S32 last_frame = first_frame - MAX_VISIBLE_HISTORY;
+
+		F32 frame_delta = ((F32) (mGraphRect.getWidth()))/(mRecording->getNumPeriods()-1);
+
+		F32 right = (F32) mGraphRect.mLeft + frame_delta*first_frame;
+		F32 left = (F32) mGraphRect.mLeft + frame_delta*last_frame;
+
+		gGL.color4f(0.5f,0.5f,0.5f,0.3f);
+		gl_rect_2d((S32) left, mGraphRect.mTop, (S32) right, mGraphRect.mBottom);
+
+		if (mHoverBarIndex > 0)
+		{
+			S32 bar_frame = first_frame - mHoverBarIndex - 1;
+			F32 bar = (F32) mGraphRect.mLeft + frame_delta*bar_frame;
+
+			gGL.color4f(0.5f,0.5f,0.5f,1);
+
+			gGL.begin(LLRender::LINES);
+			gGL.vertex2i((S32)bar, mGraphRect.mBottom);
+			gGL.vertex2i((S32)bar, mGraphRect.mTop);
+			gGL.end();
+		}
+	}
 
+	LLUnit<LLUnits::Seconds, F32> cur_max = 0;
+	U32 cur_max_calls = 0;
+	for(timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
+		it != end_timer_tree();
+		++it)
+	{
+		TimeBlock* idp = (*it);
+
+		//fatten highlighted timer
+		if (mHoverID == idp)
+		{
+			gGL.flush();
+			glLineWidth(3);
+		}
+
+		const F32 * col = sTimerColors[idp].mV;// ft_display_table[idx].color->mV;
+
+		F32 alpha = 1.f;
+
+		if (mHoverID != NULL &&
+			mHoverID != idp)
+		{	//fade out non-highlighted timers
+			if (idp->getParent() != mHoverID)
+			{
+				alpha = alpha_interp;
+			}
+		}
+
+		gGL.color4f(col[0], col[1], col[2], alpha);				
+		gGL.begin(LLRender::TRIANGLE_STRIP);
+		for (U32 j = mRecording->getNumPeriods();
+			j > 0;
+			j--)
+		{
+			LLUnit<LLUnits::Seconds, F32> time = llmax(mRecording->getPrevRecordingPeriod(j).getSum(*idp), LLUnit<LLUnits::Seconds, F64>(0.000001));
+			U32 calls = mRecording->getPrevRecordingPeriod(j).getSum(idp->callCount());
+
+			if (alpha == 1.f)
+			{ 
+				//normalize to highlighted timer
+				cur_max = llmax(cur_max, time);
+				cur_max_calls = llmax(cur_max_calls, calls);
+			}
+			F32 x = mGraphRect.mRight - j * (F32)(mGraphRect.getWidth())/(mRecording->getNumPeriods()-1);
+			F32 y = mDisplayHz 
+				? mGraphRect.mBottom + (1.f / time.value()) * ((F32) mGraphRect.getHeight() / (1.f / max_time.value()))
+				: mGraphRect.mBottom + time / max_time * (F32)mGraphRect.getHeight();
+			gGL.vertex2f(x,y);
+			gGL.vertex2f(x,mGraphRect.mBottom);
+		}
+		gGL.end();
+
+		if (mHoverID == idp)
+		{
+			gGL.flush();
+			glLineWidth(1);
+		}
+
+		if (idp->getCollapsed())
+		{	
+			//skip hidden timers
+			it.skipDescendants();
+		}
+	}
+	
+	//interpolate towards new maximum
+	max_time = lerp(max_time.value(), cur_max.value(), LLSmoothInterpolation::getInterpolant(0.1f));
+	if (max_time - cur_max <= 1 ||  cur_max - max_time  <= 1)
+	{
+		max_time = llmax(LLUnit<LLUnits::Microseconds, F32>(1), LLUnit<LLUnits::Microseconds, F32>(cur_max));
+	}
+
+	max_calls = llround(lerp((F32)max_calls, (F32) cur_max_calls, LLSmoothInterpolation::getInterpolant(0.1f)));
+	if (llabs((S32)(max_calls - cur_max_calls)) <= 1)
+	{
+		max_calls = cur_max_calls;
+	}
+
+	// TODO: make sure alpha is correct in DisplayHz mode
+	F32 alpha_target = (max_time > cur_max)
+		? llmin(max_time / cur_max - 1.f,1.f) 
+		: llmin(cur_max/ max_time - 1.f,1.f);
+	alpha_interp = lerp(alpha_interp, alpha_target, LLSmoothInterpolation::getInterpolant(0.1f));
+
+	if (mHoverID != NULL)
+	{
+		x = (mGraphRect.mRight + mGraphRect.mLeft)/2;
+		y = mGraphRect.mBottom + 8;
+
+		LLFontGL::getFontMonospace()->renderUTF8(
+			mHoverID->getName(), 
+			0, 
+			x, y, 
+			LLColor4::white,
+			LLFontGL::LEFT, LLFontGL::BOTTOM);
+	}					
+}
+
+void LLFastTimerView::drawLegend( S32 y )
+{
+	// draw legend
+	S32 dx;
+	S32 x = MARGIN;
+	const S32 TEXT_HEIGHT = (S32)LLFontGL::getFontMonospace()->getLineHeight();
+
+	{
+		LLLocalClipRect clip(LLRect(MARGIN, y, LEGEND_WIDTH, MARGIN));
+		S32 cur_line = 0;
+		ft_display_idx.clear();
+		std::map<TimeBlock*, S32> display_line;
+		for (timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
+			it != timer_tree_iterator_t();
+			++it)
+		{
+			TimeBlock* idp = (*it);
+			display_line[idp] = cur_line;
+			ft_display_idx.push_back(idp);
+			cur_line++;
+
+			x = MARGIN;
+
+			LLRect bar_rect(x, y, x + TEXT_HEIGHT, y - TEXT_HEIGHT);
+			S32 scale_offset = 0;
+			if (idp == mHoverID)
+			{
+				scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 2.f);
+			}
+			bar_rect.stretch(scale_offset);
+			gl_rect_2d(bar_rect, sTimerColors[idp]);
+
+			LLUnit<LLUnits::Milliseconds, F32> ms = 0;
+			S32 calls = 0;
+			if (mHoverBarIndex > 0 && mHoverID)
+			{
+				S32 hidx = mScrollIndex + mHoverBarIndex;
+				ms = mRecording->getPrevRecordingPeriod(hidx).getSum(*idp);
+				calls = mRecording->getPrevRecordingPeriod(hidx).getSum(idp->callCount());
+			}
+			else
+			{
+				ms = LLUnit<LLUnits::Seconds, F64>(mRecording->getPeriodMean(*idp));
+				calls = (S32)mRecording->getPeriodMean(idp->callCount());
+			}
+
+			std::string timer_label;
+			if (mDisplayCalls)
+			{
+				timer_label = llformat("%s (%d)",idp->getName().c_str(),calls);
+			}
+			else
+			{
+				timer_label = llformat("%s [%.1f]",idp->getName().c_str(),ms.value());
+			}
+			dx = (TEXT_HEIGHT+4) + get_depth(idp)*8;
+
+			LLColor4 color = LLColor4::white;
+			if (get_depth(idp) > 0)
+			{
+				S32 line_start_y = bar_rect.getCenterY();
+				S32 line_end_y = line_start_y + ((TEXT_HEIGHT + 2) * (cur_line - display_line[idp->getParent()])) - TEXT_HEIGHT;
+				gl_line_2d(x + dx - 8, line_start_y, x + dx, line_start_y, color);
+				S32 line_x = x + (TEXT_HEIGHT + 4) + ((get_depth(idp) - 1) * 8);
+				gl_line_2d(line_x, line_start_y, line_x, line_end_y, color);
+				if (idp->getCollapsed() && !idp->getChildren().empty())
+				{
+					gl_line_2d(line_x+4, line_start_y-3, line_x+4, line_start_y+4, color);
+				}
+			}
+
+			x += dx;
+			BOOL is_child_of_hover_item = (idp == mHoverID);
+			TimeBlock* next_parent = idp->getParent();
+			while(!is_child_of_hover_item && next_parent)
+			{
+				is_child_of_hover_item = (mHoverID == next_parent);
+				if (next_parent->getParent() == next_parent) break;
+				next_parent = next_parent->getParent();
+			}
+
+			LLFontGL::getFontMonospace()->renderUTF8(timer_label, 0, 
+				x, y, 
+				color, 
+				LLFontGL::LEFT, LLFontGL::TOP, 
+				is_child_of_hover_item ? LLFontGL::BOLD : LLFontGL::NORMAL);
+
+			y -= (TEXT_HEIGHT + 2);
+
+			if (idp->getCollapsed()) 
+			{
+				it.skipDescendants();
+			}
+		}
+	}
+}
+
+void LLFastTimerView::generateUniqueColors()
+{
+	// generate unique colors
+	{
+		sTimerColors[&FTM_FRAME] = LLColor4::grey;
+
+		F32 hue = 0.f;
+
+		for (timer_tree_iterator_t it = begin_timer_tree(FTM_FRAME);
+			it != timer_tree_iterator_t();
+			++it)
+		{
+			TimeBlock* idp = (*it);
+
+			const F32 HUE_INCREMENT = 0.23f;
+			hue = fmodf(hue + HUE_INCREMENT, 1.f);
+			// saturation increases with depth
+			F32 saturation = clamp_rescale((F32)get_depth(idp), 0.f, 3.f, 0.f, 1.f);
+			// lightness alternates with depth
+			F32 lightness = get_depth(idp) % 2 ? 0.5f : 0.6f;
+
+			LLColor4 child_color;
+			child_color.setHSL(hue, saturation, lightness);
+
+			sTimerColors[idp] = child_color;
+		}
+	}
+}
+
+S32 LLFastTimerView::drawHelp( S32 y )
+{
+	// Draw some help
+	const S32 texth = (S32)LLFontGL::getFontMonospace()->getLineHeight();
+
+	char modedesc[][32] = {
+		"2 x Average ",
+		"Max         ",
+		"Recent Max  ",
+		"100 ms      "
+	};
+	char centerdesc[][32] = {
+		"Left      ",
+		"Centered  ",
+		"Ordered   "
+	};
+
+	std::string text;
+	text = llformat("Full bar = %s [Click to pause/reset] [SHIFT-Click to toggle]",modedesc[mDisplayMode]);
+	LLFontGL::getFontMonospace()->renderUTF8(text, 0, MARGIN, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
+
+	y -= (texth + 2);
+	text = llformat("Justification = %s [CTRL-Click to toggle]",centerdesc[mDisplayCenter]);
+	LLFontGL::getFontMonospace()->renderUTF8(text, 0, MARGIN, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
+	y -= (texth + 2);
+
+	LLFontGL::getFontMonospace()->renderUTF8(std::string("[Right-Click log selected] [ALT-Click toggle counts] [ALT-SHIFT-Click sub hidden]"),
+		0, MARGIN, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
+	y -= (texth + 2);
+	return y;
+}
+
+void LLFastTimerView::drawTicks()
+{
+	// Draw MS ticks
+	{
+		LLUnit<LLUnits::Milliseconds, U32> ms = mTotalTimeDisplay;
+		std::string tick_label;
+		S32 x;
+		S32 barw = mBarRect.getWidth();
+
+		tick_label = llformat("%.1f ms |", (F32)ms.value()*.25f);
+		x = mBarRect.mLeft + barw/4 - LLFontGL::getFontMonospace()->getWidth(tick_label);
+		LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, x, mBarRect.mTop, LLColor4::white,
+			LLFontGL::LEFT, LLFontGL::TOP);
+
+		tick_label = llformat("%.1f ms |", (F32)ms.value()*.50f);
+		x = mBarRect.mLeft + barw/2 - LLFontGL::getFontMonospace()->getWidth(tick_label);
+		LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, x, mBarRect.mTop, LLColor4::white,
+			LLFontGL::LEFT, LLFontGL::TOP);
+
+		tick_label = llformat("%.1f ms |", (F32)ms.value()*.75f);
+		x = mBarRect.mLeft + (barw*3)/4 - LLFontGL::getFontMonospace()->getWidth(tick_label);
+		LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, x, mBarRect.mTop, LLColor4::white,
+			LLFontGL::LEFT, LLFontGL::TOP);
+
+		tick_label = llformat( "%d ms |", (U32)ms.value());
+		x = mBarRect.mLeft + barw - LLFontGL::getFontMonospace()->getWidth(tick_label);
+		LLFontGL::getFontMonospace()->renderUTF8(tick_label, 0, x, mBarRect.mTop, LLColor4::white,
+			LLFontGL::LEFT, LLFontGL::TOP);
+	}
+}
+
+void LLFastTimerView::drawBorders( S32 y, const S32 x_start, S32 bar_height, S32 dy )
+{
+	// Draw borders
+	{
+		S32 by = y + 6 + (S32)LLFontGL::getFontMonospace()->getLineHeight();	
+
+		//heading
+		gl_rect_2d(x_start-5, by, getRect().getWidth()-5, y+5, LLColor4::grey, FALSE);
+
+		//tree view
+		gl_rect_2d(5, by, x_start-10, 5, LLColor4::grey, FALSE);
+
+		by = y + 5;
+		//average bar
+		gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-5, LLColor4::grey, FALSE);
+
+		by -= bar_height*2+dy;
+
+		//current frame bar
+		gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-2, LLColor4::grey, FALSE);
+
+		by -= bar_height+dy+1;
+
+		//history bars
+		gl_rect_2d(x_start-5, by, getRect().getWidth()-5, LINE_GRAPH_HEIGHT-bar_height-dy-2, LLColor4::grey, FALSE);			
+
+		by = LINE_GRAPH_HEIGHT-bar_height-dy-7;
+
+		//line graph
+		mGraphRect = LLRect(x_start-5, by, getRect().getWidth()-5, 5);
+
+		gl_rect_2d(mGraphRect, FALSE);
+	}
+}
+
+void LLFastTimerView::updateTotalTime()
+{
+	switch(mDisplayMode)
+	{
+	case 0:
+		mTotalTimeDisplay = mRecording->getPeriodMean(FTM_FRAME)*2;
+		break;
+	case 1:
+		mTotalTimeDisplay = mAllTimeMax;
+		break;
+	case 2:
+		// Calculate the max total ticks for the current history
+		mTotalTimeDisplay = mRecording->getPeriodMax(FTM_FRAME);
+		break;
+	default:
+		mTotalTimeDisplay = LLUnit<LLUnits::Milliseconds, F32>(100);
+		break;
+	}
+
+	mTotalTimeDisplay = LLUnit<LLUnits::Milliseconds, F32>(llceil(mTotalTimeDisplay.as<LLUnits::Milliseconds>().value() / 20.f) * 20.f);
+}
+
+void LLFastTimerView::drawBars()
+{
+	updateTotalTime();
+	if (mTotalTimeDisplay <= 0.0) return;
+
+	LLLocalClipRect clip(mBarRect);
+
+	S32 bar_height = mBarRect.getHeight() / (MAX_VISIBLE_HISTORY + 2);
+	S32 vpad = llmax(1, bar_height / 4); // spacing between bars
+	bar_height -= vpad;
+
+	drawTicks();
+	S32 y = mBarRect.mTop - ((S32)LLFontGL::getFontMonospace()->getLineHeight() + 4);
+	drawBorders(y, mBarRect.mLeft, bar_height, vpad);
+
+	// Draw bars for each history entry
+	// Special: -1 = show running average
+	LLPointer<LLUIImage> bar_image = LLUI::getUIImage("Rounded_Square");
+	gGL.getTexUnit(0)->bind(bar_image->getImage());
+	const S32 histmax = llmin((S32)mRecording->getNumPeriods(), MAX_VISIBLE_HISTORY) + 1;
+
+	for (S32 bar_index = 0; bar_index < histmax && y > LINE_GRAPH_HEIGHT; bar_index++)
+	{
+		S32 history_index = (bar_index > 0)
+			? bar_index + mScrollIndex
+			: -1;
+		mTimerBars[bar_index].clear();
+		mTimerBars[bar_index].reserve(LLInstanceTracker<LLTrace::TimeBlock>::instanceCount());
+
+		updateTimerBarWidths(&FTM_FRAME, mTimerBars[bar_index], history_index, true);
+		LLRect frame_bar_rect(mBarRect.mLeft, y, mBarRect.mLeft + mTimerBars[bar_index][0].mWidth, y-bar_height);
+		mTimerBars[bar_index][0].mVisibleRect = frame_bar_rect;
+		updateTimerBarFractions(&FTM_FRAME, 0, mTimerBars[bar_index]);
+		drawBar(&FTM_FRAME, frame_bar_rect, mTimerBars[bar_index], 0, bar_image);
+				
+		y -= (bar_height + vpad);
+		if (bar_index == 0)
+			y -= bar_height;
+	}
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+}
+
+static LLFastTimer::DeclareTimer FTM_UPDATE_TIMER_BAR_WIDTHS("Update timer bar widths");
+
+S32 LLFastTimerView::updateTimerBarWidths(LLTrace::TimeBlock* time_block, std::vector<TimerBar>& bars, S32 history_index, bool visible)
+{
+	LLFastTimer _(FTM_UPDATE_TIMER_BAR_WIDTHS);
+	F32 self_time_frame_fraction = history_index == -1
+		? (mRecording->getPeriodMean(time_block->selfTime()) / mTotalTimeDisplay) 
+		: (mRecording->getPrevRecordingPeriod(history_index).getSum(time_block->selfTime()) / mTotalTimeDisplay);
+
+	S32 self_time_width = llround(self_time_frame_fraction * (F32)mBarRect.getWidth());
+	S32 full_width = self_time_width;
+
+	bool children_visible = visible;
+
+	// reserve a spot for this bar to be rendered before its children
+	// even though we don't know its size yet
+	S32 bar_rect_index = bars.size();
+	if (visible)
+	{
+		bars.push_back(TimerBar());
+	}
+
+	if (time_block->getCollapsed())
+	{
+		children_visible = false;
+	}
+	for (TimeBlock::child_iter it = time_block->beginChildren(), end_it = time_block->endChildren(); it != end_it; ++it)
+	{
+		full_width += updateTimerBarWidths(*it, bars, history_index, children_visible);
+	}
+
+	if (visible)
+	{
+		TimerBar& timer_bar = bars[bar_rect_index];
+
+		timer_bar.mWidth = full_width;
+		timer_bar.mSelfWidth = self_time_width;
+		timer_bar.mColor = sTimerColors[time_block];
+
+		BOOL is_child_of_hover_item = (time_block == mHoverID);
+		TimeBlock* next_parent = time_block->getParent();
+		while(!is_child_of_hover_item && next_parent)
+		{
+			is_child_of_hover_item = (mHoverID == next_parent);
+			if (next_parent->getParent() == next_parent) break;
+			next_parent = next_parent->getParent();
+		}
+
+		if (mHoverID != NULL 
+			&& time_block != mHoverID 
+			&& !is_child_of_hover_item)
+		{
+			timer_bar.mColor = lerp(timer_bar.mColor, LLColor4::grey, 0.8f);
+		}
+	}
+	return full_width;
+}
+
+static LLFastTimer::DeclareTimer FTM_UPDATE_TIMER_BAR_FRACTIONS("Update timer bar fractions");
+
+S32 LLFastTimerView::updateTimerBarFractions(LLTrace::TimeBlock* time_block, S32 timer_bar_index, std::vector<TimerBar>& bars)
+{
+	LLFastTimer _(FTM_UPDATE_TIMER_BAR_FRACTIONS);
+	TimerBar& timer_bar = bars[timer_bar_index];
+	S32 child_time_width = timer_bar.mWidth - timer_bar.mSelfWidth;
+	LLRect children_rect = timer_bar.mVisibleRect;
+
+	if (mDisplayCenter == ALIGN_CENTER)
+	{
+		children_rect.mLeft += timer_bar.mSelfWidth / 2;
+	}
+	else if (mDisplayCenter == ALIGN_RIGHT)
+	{
+		children_rect.mLeft += timer_bar.mSelfWidth;
+	}
+	children_rect.mRight = children_rect.mLeft + timer_bar.mWidth - timer_bar.mSelfWidth;
+
+	if (children_rect.getHeight() > MIN_BAR_HEIGHT)
+	{
+		children_rect.mTop -= 1;
+		children_rect.mBottom += 1;
+	}
+	timer_bar.mChildrenRect = children_rect;
+
+	//now loop through children and figure out portion of bar image covered by each bar, now that we know the
+	//sum of all children
+	if (!time_block->getCollapsed())
+	{
+		F32 bar_fraction_start = 0.f;
+		for (TimeBlock::child_iter it = time_block->beginChildren(), end_it = time_block->endChildren(); 
+			it != end_it; 
+			++it)
+		{
+			timer_bar_index++;
+
+			TimerBar& child_timer_bar = bars[timer_bar_index];
+			TimeBlock* child_time_block = *it;
+
+			child_timer_bar.mStartFraction = bar_fraction_start;
+			child_timer_bar.mEndFraction = child_time_width > 0
+				? bar_fraction_start + (F32)child_timer_bar.mWidth / child_time_width
+				: 1.f;
+			child_timer_bar.mVisibleRect.set(children_rect.mLeft + llround(child_timer_bar.mStartFraction * children_rect.getWidth()), 
+				children_rect.mTop, 
+				children_rect.mLeft + llround(child_timer_bar.mEndFraction * children_rect.getWidth()), 
+				children_rect.mBottom);
+
+			timer_bar_index = updateTimerBarFractions(child_time_block, timer_bar_index, bars);
+
+			bar_fraction_start = child_timer_bar.mEndFraction;
+		}
+	}
+	return timer_bar_index;
+}
+
+S32 LLFastTimerView::drawBar(LLTrace::TimeBlock* time_block, LLRect bar_rect, std::vector<TimerBar>& bars, S32 bar_index, LLPointer<LLUIImage>& bar_image)
+{
+	TimerBar& timer_bar = bars[bar_index];
+
+	// animate scale of bar when hovering over that particular timer
+	if (bar_rect.getWidth() > 0)
+	{
+		LLRect render_rect(bar_rect);
+		S32 scale_offset = 0;
+		if (time_block == mHoverID)
+		{
+			scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 3.f);
+			render_rect.mTop += scale_offset;
+			render_rect.mBottom -= scale_offset;
+		}
+
+		gGL.color4fv(timer_bar.mColor.mV);
+		gl_segmented_rect_2d_fragment_tex(render_rect,
+			bar_image->getTextureWidth(), bar_image->getTextureHeight(), 
+			16, 
+			timer_bar.mStartFraction, timer_bar.mEndFraction);
+	}
+
+	if (!time_block->getCollapsed())
+	{
+		for (TimeBlock::child_iter it = time_block->beginChildren(), end_it = time_block->endChildren(); it != end_it; ++it)
+		{
+			++bar_index;
+			bar_index = drawBar(*it, timer_bar.mChildrenRect, bars, bar_index, bar_image);
+		}
+	}
+
+	return bar_index;
+}
diff --git a/indra/newview/llfasttimerview.h b/indra/newview/llfasttimerview.h
index 5766cfa0b0..8b9ad290bc 100644
--- a/indra/newview/llfasttimerview.h
+++ b/indra/newview/llfasttimerview.h
@@ -29,11 +29,14 @@
 
 #include "llfloater.h"
 #include "llfasttimer.h"
+#include "llunit.h"
+#include "lltracerecording.h"
 
 class LLFastTimerView : public LLFloater
 {
 public:
 	LLFastTimerView(const LLSD&);
+	~LLFastTimerView();
 	BOOL postBuild();
 
 	static BOOL sAnalyzePerformance;
@@ -46,7 +49,6 @@ private:
 	static LLSD analyzePerformanceLogDefault(std::istream& is) ;
 	static void exportCharts(const std::string& base, const std::string& target);
 	void onPause();
-	LLFastTimer::NamedTimer& getFrameTimer();
 
 public:
 
@@ -59,15 +61,48 @@ public:
 	virtual BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
 	virtual void draw();
 
-	LLFastTimer::NamedTimer* getLegendID(S32 y);
+	LLTrace::TimeBlock* getLegendID(S32 y);
 	F64 getTime(const std::string& name);
 
 protected:
 	virtual	void	onClickCloseBtn();
+
 private:	
-	typedef std::vector<std::vector<S32> > bar_positions_t;
-	bar_positions_t mBarStart;
-	bar_positions_t mBarEnd;
+	void drawTicks();
+	void drawLineGraph();
+	void drawLegend(S32 y);
+	S32 drawHelp(S32 y);
+	void drawBorders( S32 y, const S32 x_start, S32 barh, S32 dy);
+	void drawBars();
+
+	void printLineStats();
+	void generateUniqueColors();
+	void updateTotalTime();
+
+	struct TimerBar
+	{
+		TimerBar()
+		:	mWidth(0),
+			mSelfWidth(0),
+			mVisible(true),
+			mStartFraction(0.f),
+			mEndFraction(1.f)
+		{}
+		S32			mWidth;
+		S32			mSelfWidth;
+		LLRect		mVisibleRect,
+					mChildrenRect;
+		LLColor4	mColor;
+		bool		mVisible;
+		F32			mStartFraction,
+					mEndFraction;
+	};
+	S32 updateTimerBarWidths(LLTrace::TimeBlock* time_block, std::vector<TimerBar>& bars, S32 history_index, bool visible);
+	S32 updateTimerBarFractions(LLTrace::TimeBlock* time_block, S32 timer_bar_index, std::vector<TimerBar>& bars);
+	S32 drawBar(LLTrace::TimeBlock* time_block, LLRect bar_rect, std::vector<TimerBar>& bars, S32 bar_index, LLPointer<LLUIImage>& bar_image);
+	void setPauseState(bool pause_state);
+
+	std::vector<TimerBar>* mTimerBars;
 	S32 mDisplayMode;
 
 	typedef enum child_alignment
@@ -79,19 +114,21 @@ private:
 	} ChildAlignment;
 
 	ChildAlignment mDisplayCenter;
-	S32 mDisplayCalls;
-	S32 mDisplayHz;
-	U64 mAvgCountTotal;
-	U64 mMaxCountTotal;
+	bool                          mDisplayCalls,
+								  mDisplayHz;
+	LLUnit<LLUnits::Seconds, F64> mAllTimeMax,
+								  mTotalTimeDisplay;
 	LLRect mBarRect;
 	S32	mScrollIndex;
-	LLFastTimer::NamedTimer* mHoverID;
-	LLFastTimer::NamedTimer* mHoverTimer;
+	LLTrace::TimeBlock*           mHoverID;
+	LLTrace::TimeBlock*           mHoverTimer;
 	LLRect					mToolTipRect;
 	S32 mHoverBarIndex;
 	LLFrameTimer mHighlightTimer;
 	S32 mPrintStats;
 	LLRect mGraphRect;
+	LLTrace::PeriodicRecording*	  mRecording;
+	bool						  mPauseHistory;
 };
 
 #endif
diff --git a/indra/newview/llfloaterabout.cpp b/indra/newview/llfloaterabout.cpp
index 83fb887d81..58701ca3c9 100644
--- a/indra/newview/llfloaterabout.cpp
+++ b/indra/newview/llfloaterabout.cpp
@@ -296,7 +296,8 @@ LLSD LLFloaterAbout::getInfo()
 
 	if (gPacketsIn > 0)
 	{
-		info["PACKETS_LOST"] = LLViewerStats::getInstance()->mPacketsLostStat.getCurrent();
+		LLTrace::Recording cur_frame = LLTrace::get_frame_recording().snapshotCurRecordingPeriod();
+		info["PACKETS_LOST"] = cur_frame.getSum(LLStatViewer::PACKETS_LOST);
 		info["PACKETS_IN"] = F32(gPacketsIn);
 		info["PACKETS_PCT"] = 100.f*info["PACKETS_LOST"].asReal() / info["PACKETS_IN"].asReal();
 	}
diff --git a/indra/newview/llfloatercolorpicker.cpp b/indra/newview/llfloatercolorpicker.cpp
index d6ebe44daa..06681f5fd5 100644
--- a/indra/newview/llfloatercolorpicker.cpp
+++ b/indra/newview/llfloatercolorpicker.cpp
@@ -525,11 +525,11 @@ void LLFloaterColorPicker::draw()
 
 	if (gFocusMgr.childHasMouseCapture(getDragHandle()))
 	{
-		mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
+		mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
 	}
 	else
 	{
-		mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
+		mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
 	}
 
 	mPipetteBtn->setToggleState(LLToolMgr::getInstance()->getCurrentTool() == LLToolPipette::getInstance());
diff --git a/indra/newview/llfloaterjoystick.cpp b/indra/newview/llfloaterjoystick.cpp
index d0c22d25f2..7fcebc965a 100644
--- a/indra/newview/llfloaterjoystick.cpp
+++ b/indra/newview/llfloaterjoystick.cpp
@@ -33,7 +33,7 @@
 #include "llerror.h"
 #include "llrect.h"
 #include "llstring.h"
-#include "llstat.h"
+#include "lltrace.h"
 
 // project includes
 #include "lluictrlfactory.h"
@@ -42,6 +42,22 @@
 #include "llviewerjoystick.h"
 #include "llcheckboxctrl.h"
 
+static LLTrace::MeasurementStatHandle<> sJoystickAxis1("Joystick axis 1"),
+										sJoystickAxis2("Joystick axis 2"),
+										sJoystickAxis3("Joystick axis 3"),
+										sJoystickAxis4("Joystick axis 4"),
+										sJoystickAxis5("Joystick axis 5"),
+										sJoystickAxis6("Joystick axis 6");
+static LLTrace::MeasurementStatHandle<>* sJoystickAxes[6] = 
+{
+	&sJoystickAxis1,
+	&sJoystickAxis2,
+	&sJoystickAxis3,
+	&sJoystickAxis4,
+	&sJoystickAxis5,
+	&sJoystickAxis6
+};
+
 LLFloaterJoystick::LLFloaterJoystick(const LLSD& data)
 	: LLFloater(data)
 {
@@ -61,7 +77,7 @@ void LLFloaterJoystick::draw()
 	for (U32 i = 0; i < 6; i++)
 	{
 		F32 value = joystick->getJoystickAxis(i);
-		mAxisStats[i]->addValue(value * gFrameIntervalSeconds);
+		sample(*sJoystickAxes[i], value * gFrameIntervalSeconds.value());
 		if (mAxisStatsBar[i])
 		{
 			F32 minbar, maxbar;
@@ -85,12 +101,11 @@ BOOL LLFloaterJoystick::postBuild()
 	for (U32 i = 0; i < 6; i++)
 	{
 		std::string stat_name(llformat("Joystick axis %d", i));
-		mAxisStats[i] = new LLStat(stat_name, 4);
 		std::string axisname = llformat("axis%d", i);
 		mAxisStatsBar[i] = getChild<LLStatBar>(axisname);
 		if (mAxisStatsBar[i])
 		{
-			mAxisStatsBar[i]->setStat(mAxisStats[i]);
+			mAxisStatsBar[i]->setStat(stat_name);
 			mAxisStatsBar[i]->setRange(-range, range, range * 0.25f, range * 0.5f);
 		}
 	}
diff --git a/indra/newview/llfloaterjoystick.h b/indra/newview/llfloaterjoystick.h
index dfdb108ff8..9c3752540d 100644
--- a/indra/newview/llfloaterjoystick.h
+++ b/indra/newview/llfloaterjoystick.h
@@ -84,7 +84,6 @@ private:
 	LLCheckBoxCtrl	*mCheckFlycamEnabled;
 
 	// stats view 
-	LLStat* mAxisStats[6];
 	LLStatBar* mAxisStatsBar[6];
 };
 
diff --git a/indra/newview/llfloaterlagmeter.cpp b/indra/newview/llfloaterlagmeter.cpp
deleted file mode 100644
index 68b1770bb2..0000000000
--- a/indra/newview/llfloaterlagmeter.cpp
+++ /dev/null
@@ -1,375 +0,0 @@
-/** 
- * @file llfloaterlagmeter.cpp
- * @brief The "Lag-o-Meter" floater used to tell users what is causing lag.
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llfloaterlagmeter.h"
-
-#include "lluictrlfactory.h"
-#include "llviewerstats.h"
-#include "llviewertexture.h"
-#include "llviewercontrol.h"
-#include "llappviewer.h"
-
-#include "lltexturefetch.h"
-
-#include "llbutton.h"
-#include "llfocusmgr.h"
-#include "lltextbox.h"
-
-const std::string LAG_CRITICAL_IMAGE_NAME = "lag_status_critical.tga";
-const std::string LAG_WARNING_IMAGE_NAME  = "lag_status_warning.tga";
-const std::string LAG_GOOD_IMAGE_NAME     = "lag_status_good.tga";
-
-LLFloaterLagMeter::LLFloaterLagMeter(const LLSD& key)
-	:	LLFloater(key)
-{
-	mCommitCallbackRegistrar.add("LagMeter.ClickShrink",  boost::bind(&LLFloaterLagMeter::onClickShrink, this));	
-}
-
-BOOL LLFloaterLagMeter::postBuild()
-{
-	// Don't let this window take keyboard focus -- it's confusing to
-	// lose arrow-key driving when testing lag.
-	setIsChrome(TRUE);
-	
-	// were we shrunk last time?
-	if (isShrunk())
-	{
-		onClickShrink();
-	}
-	
-	mClientButton = getChild<LLButton>("client_lagmeter");
-	mClientText = getChild<LLTextBox>("client_text");
-	mClientCause = getChild<LLTextBox>("client_lag_cause");
-
-	mNetworkButton = getChild<LLButton>("network_lagmeter");
-	mNetworkText = getChild<LLTextBox>("network_text");
-	mNetworkCause = getChild<LLTextBox>("network_lag_cause");
-
-	mServerButton = getChild<LLButton>("server_lagmeter");
-	mServerText = getChild<LLTextBox>("server_text");
-	mServerCause = getChild<LLTextBox>("server_lag_cause");
-
-	std::string config_string = getString("client_frame_rate_critical_fps", mStringArgs);
-	mClientFrameTimeCritical = 1.0f / (float)atof( config_string.c_str() );
-	config_string = getString("client_frame_rate_warning_fps", mStringArgs);
-	mClientFrameTimeWarning = 1.0f / (float)atof( config_string.c_str() );
-
-	config_string = getString("network_packet_loss_critical_pct", mStringArgs);
-	mNetworkPacketLossCritical = (float)atof( config_string.c_str() );
-	config_string = getString("network_packet_loss_warning_pct", mStringArgs);
-	mNetworkPacketLossWarning = (float)atof( config_string.c_str() );
-
-	config_string = getString("network_ping_critical_ms", mStringArgs);
-	mNetworkPingCritical = (float)atof( config_string.c_str() );
-	config_string = getString("network_ping_warning_ms", mStringArgs);
-	mNetworkPingWarning = (float)atof( config_string.c_str() );
-	config_string = getString("server_frame_rate_critical_fps", mStringArgs);
-
-	mServerFrameTimeCritical = 1000.0f / (float)atof( config_string.c_str() );
-	config_string = getString("server_frame_rate_warning_fps", mStringArgs);
-	mServerFrameTimeWarning = 1000.0f / (float)atof( config_string.c_str() );
-	config_string = getString("server_single_process_max_time_ms", mStringArgs);
-	mServerSingleProcessMaxTime = (float)atof( config_string.c_str() );
-
-//	mShrunk = false;
-	config_string = getString("max_width_px", mStringArgs);
-	mMaxWidth = atoi( config_string.c_str() );
-	config_string = getString("min_width_px", mStringArgs);
-	mMinWidth = atoi( config_string.c_str() );
-
-	mStringArgs["[CLIENT_FRAME_RATE_CRITICAL]"] = getString("client_frame_rate_critical_fps");
-	mStringArgs["[CLIENT_FRAME_RATE_WARNING]"] = getString("client_frame_rate_warning_fps");
-
-	mStringArgs["[NETWORK_PACKET_LOSS_CRITICAL]"] = getString("network_packet_loss_critical_pct");
-	mStringArgs["[NETWORK_PACKET_LOSS_WARNING]"] = getString("network_packet_loss_warning_pct");
-
-	mStringArgs["[NETWORK_PING_CRITICAL]"] = getString("network_ping_critical_ms");
-	mStringArgs["[NETWORK_PING_WARNING]"] = getString("network_ping_warning_ms");
-
-	mStringArgs["[SERVER_FRAME_RATE_CRITICAL]"] = getString("server_frame_rate_critical_fps");
-	mStringArgs["[SERVER_FRAME_RATE_WARNING]"] = getString("server_frame_rate_warning_fps");
-
-//	childSetAction("minimize", onClickShrink, this);
-	updateControls(isShrunk()); // if expanded append colon to the labels (EXT-4079)
-
-	return TRUE;
-}
-LLFloaterLagMeter::~LLFloaterLagMeter()
-{
-	// save shrunk status for next time
-//	gSavedSettings.setBOOL("LagMeterShrunk", mShrunk);
-	// expand so we save the large window rectangle
-	if (isShrunk())
-	{
-		onClickShrink();
-	}
-}
-
-void LLFloaterLagMeter::draw()
-{
-	determineClient();
-	determineNetwork();
-	determineServer();
-
-	LLFloater::draw();
-}
-
-void LLFloaterLagMeter::determineClient()
-{
-	F32 client_frame_time = LLViewerStats::getInstance()->mFPSStat.getMeanDuration();
-	bool find_cause = false;
-
-	if (!gFocusMgr.getAppHasFocus())
-	{
-		mClientButton->setImageUnselected(LLUI::getUIImage(LAG_GOOD_IMAGE_NAME));
-		mClientText->setText( getString("client_frame_time_window_bg_msg", mStringArgs) );
-		mClientCause->setText( LLStringUtil::null );
-	}
-	else if(client_frame_time >= mClientFrameTimeCritical)
-	{
-		mClientButton->setImageUnselected(LLUI::getUIImage(LAG_CRITICAL_IMAGE_NAME));
-		mClientText->setText( getString("client_frame_time_critical_msg", mStringArgs) );
-		find_cause = true;
-	}
-	else if(client_frame_time >= mClientFrameTimeWarning)
-	{
-		mClientButton->setImageUnselected(LLUI::getUIImage(LAG_WARNING_IMAGE_NAME));
-		mClientText->setText( getString("client_frame_time_warning_msg", mStringArgs) );
-		find_cause = true;
-	}
-	else
-	{
-		mClientButton->setImageUnselected(LLUI::getUIImage(LAG_GOOD_IMAGE_NAME));
-		mClientText->setText( getString("client_frame_time_normal_msg", mStringArgs) );
-		mClientCause->setText( LLStringUtil::null );
-	}	
-
-	if(find_cause)
-	{
-		if(gSavedSettings.getF32("RenderFarClip") > 128)
-		{
-			mClientCause->setText( getString("client_draw_distance_cause_msg", mStringArgs) );
-		}
-		else if(LLAppViewer::instance()->getTextureFetch()->getNumRequests() > 2)
-		{
-			mClientCause->setText( getString("client_texture_loading_cause_msg", mStringArgs) );
-		}
-		else if((BYTES_TO_MEGA_BYTES(LLViewerTexture::sBoundTextureMemoryInBytes)) > LLViewerTexture::sMaxBoundTextureMemInMegaBytes)
-		{
-			mClientCause->setText( getString("client_texture_memory_cause_msg", mStringArgs) );
-		}
-		else 
-		{
-			mClientCause->setText( getString("client_complex_objects_cause_msg", mStringArgs) );
-		}
-	}
-}
-
-void LLFloaterLagMeter::determineNetwork()
-{
-	F32 packet_loss = LLViewerStats::getInstance()->mPacketsLostPercentStat.getMean();
-	F32 ping_time = LLViewerStats::getInstance()->mSimPingStat.getMean();
-	bool find_cause_loss = false;
-	bool find_cause_ping = false;
-
-	// *FIXME: We can't blame a large ping time on anything in
-	// particular if the frame rate is low, because a low frame
-	// rate is a sure recipe for bad ping times right now until
-	// the network handlers are de-synched from the rendering.
-	F32 client_frame_time_ms = 1000.0f * LLViewerStats::getInstance()->mFPSStat.getMeanDuration();
-	
-	if(packet_loss >= mNetworkPacketLossCritical)
-	{
-		mNetworkButton->setImageUnselected(LLUI::getUIImage(LAG_CRITICAL_IMAGE_NAME));
-		mNetworkText->setText( getString("network_packet_loss_critical_msg", mStringArgs) );
-		find_cause_loss = true;
-	}
-	else if(ping_time >= mNetworkPingCritical)
-	{
-		mNetworkButton->setImageUnselected(LLUI::getUIImage(LAG_CRITICAL_IMAGE_NAME));
-		if (client_frame_time_ms < mNetworkPingCritical)
-		{
-			mNetworkText->setText( getString("network_ping_critical_msg", mStringArgs) );
-			find_cause_ping = true;
-		}
-	}
-	else if(packet_loss >= mNetworkPacketLossWarning)
-	{
-		mNetworkButton->setImageUnselected(LLUI::getUIImage(LAG_WARNING_IMAGE_NAME));
-		mNetworkText->setText( getString("network_packet_loss_warning_msg", mStringArgs) );
-		find_cause_loss = true;
-	}
-	else if(ping_time >= mNetworkPingWarning)
-	{
-		mNetworkButton->setImageUnselected(LLUI::getUIImage(LAG_WARNING_IMAGE_NAME));
-		if (client_frame_time_ms < mNetworkPingWarning)
-		{
-			mNetworkText->setText( getString("network_ping_warning_msg", mStringArgs) );
-			find_cause_ping = true;
-		}
-	}
-	else
-	{
-		mNetworkButton->setImageUnselected(LLUI::getUIImage(LAG_GOOD_IMAGE_NAME));
-		mNetworkText->setText( getString("network_performance_normal_msg", mStringArgs) );
-	}
-
-	if(find_cause_loss)
- 	{
-		mNetworkCause->setText( getString("network_packet_loss_cause_msg", mStringArgs) );
- 	}
-	else if(find_cause_ping)
-	{
-		mNetworkCause->setText( getString("network_ping_cause_msg", mStringArgs) );
-	}
-	else
-	{
-		mNetworkCause->setText( LLStringUtil::null );
-	}
-}
-
-void LLFloaterLagMeter::determineServer()
-{
-	F32 sim_frame_time = LLViewerStats::getInstance()->mSimFrameMsec.getCurrent();
-	bool find_cause = false;
-
-	if(sim_frame_time >= mServerFrameTimeCritical)
-	{
-		mServerButton->setImageUnselected(LLUI::getUIImage(LAG_CRITICAL_IMAGE_NAME));
-		mServerText->setText( getString("server_frame_time_critical_msg", mStringArgs) );
-		find_cause = true;
-	}
-	else if(sim_frame_time >= mServerFrameTimeWarning)
-	{
-		mServerButton->setImageUnselected(LLUI::getUIImage(LAG_WARNING_IMAGE_NAME));
-		mServerText->setText( getString("server_frame_time_warning_msg", mStringArgs) );
-		find_cause = true;
-	}
-	else
-	{
-		mServerButton->setImageUnselected(LLUI::getUIImage(LAG_GOOD_IMAGE_NAME));
-		mServerText->setText( getString("server_frame_time_normal_msg", mStringArgs) );
-		mServerCause->setText( LLStringUtil::null );
-	}	
-
-	if(find_cause)
-	{
-		if(LLViewerStats::getInstance()->mSimSimPhysicsMsec.getCurrent() > mServerSingleProcessMaxTime)
-		{
-			mServerCause->setText( getString("server_physics_cause_msg", mStringArgs) );
-		}
-		else if(LLViewerStats::getInstance()->mSimScriptMsec.getCurrent() > mServerSingleProcessMaxTime)
-		{
-			mServerCause->setText( getString("server_scripts_cause_msg", mStringArgs) );
-		}
-		else if(LLViewerStats::getInstance()->mSimNetMsec.getCurrent() > mServerSingleProcessMaxTime)
-		{
-			mServerCause->setText( getString("server_net_cause_msg", mStringArgs) );
-		}
-		else if(LLViewerStats::getInstance()->mSimAgentMsec.getCurrent() > mServerSingleProcessMaxTime)
-		{
-			mServerCause->setText( getString("server_agent_cause_msg", mStringArgs) );
-		}
-		else if(LLViewerStats::getInstance()->mSimImagesMsec.getCurrent() > mServerSingleProcessMaxTime)
-		{
-			mServerCause->setText( getString("server_images_cause_msg", mStringArgs) );
-		}
-		else
-		{
-			mServerCause->setText( getString("server_generic_cause_msg", mStringArgs) );
-		}
-	}
-}
-
-void LLFloaterLagMeter::updateControls(bool shrink)
-{
-//	LLFloaterLagMeter * self = (LLFloaterLagMeter*)data;
-
-	LLButton * button = getChild<LLButton>("minimize");
-	S32 delta_width = mMaxWidth -mMinWidth;
-	LLRect r = getRect();
-
-	if(!shrink)
-	{
-		setTitle(getString("max_title_msg", mStringArgs) );
-		// make left edge appear to expand
-		r.translate(-delta_width, 0);
-		setRect(r);
-		reshape(mMaxWidth, getRect().getHeight());
-		
-		getChild<LLUICtrl>("client")->setValue(getString("client_text_msg", mStringArgs) + ":");
-		getChild<LLUICtrl>("network")->setValue(getString("network_text_msg",mStringArgs) + ":");
-		getChild<LLUICtrl>("server")->setValue(getString("server_text_msg", mStringArgs) + ":");
-
-		// usually "<<"
-		button->setLabel( getString("smaller_label", mStringArgs) );
-	}
-	else
-	{
-		setTitle( getString("min_title_msg", mStringArgs) );
-		// make left edge appear to collapse
-		r.translate(delta_width, 0);
-		setRect(r);
-		reshape(mMinWidth, getRect().getHeight());
-		
-		getChild<LLUICtrl>("client")->setValue(getString("client_text_msg", mStringArgs) );
-		getChild<LLUICtrl>("network")->setValue(getString("network_text_msg",mStringArgs) );
-		getChild<LLUICtrl>("server")->setValue(getString("server_text_msg", mStringArgs) );
-
-		// usually ">>"
-		button->setLabel( getString("bigger_label", mStringArgs) );
-	}
-	// Don't put keyboard focus on the button
-	button->setFocus(FALSE);
-
-//	self->mClientText->setVisible(self->mShrunk);
-//	self->mClientCause->setVisible(self->mShrunk);
-//	self->getChildView("client_help")->setVisible( self->mShrunk);
-
-//	self->mNetworkText->setVisible(self->mShrunk);
-//	self->mNetworkCause->setVisible(self->mShrunk);
-//	self->getChildView("network_help")->setVisible( self->mShrunk);
-
-//	self->mServerText->setVisible(self->mShrunk);
-//	self->mServerCause->setVisible(self->mShrunk);
-//	self->getChildView("server_help")->setVisible( self->mShrunk);
-
-//	self->mShrunk = !self->mShrunk;
-}
-
-BOOL LLFloaterLagMeter::isShrunk()
-{
-	return gSavedSettings.getBOOL("LagMeterShrunk");
-}
-
-void LLFloaterLagMeter::onClickShrink()  // toggle "LagMeterShrunk"
-{
-	bool shrunk = isShrunk();
-	updateControls(!shrunk);
-	gSavedSettings.setBOOL("LagMeterShrunk", !shrunk);
-}
diff --git a/indra/newview/llfloaterlagmeter.h b/indra/newview/llfloaterlagmeter.h
deleted file mode 100644
index eef6955601..0000000000
--- a/indra/newview/llfloaterlagmeter.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/** 
- * @file llfloaterlagmeter.h
- * @brief The "Lag-o-Meter" floater used to tell users what is causing lag.
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LLFLOATERLAGMETER_H
-#define LLFLOATERLAGMETER_H
-
-#include "llfloater.h"
-
-class LLTextBox;
-
-class LLFloaterLagMeter : public LLFloater
-{
-	friend class LLFloaterReg;
-	
-public:
-	/*virtual*/ void draw();
-	/*virtual*/ BOOL postBuild();	
-private:
-	
-	LLFloaterLagMeter(const LLSD& key);
-	/*virtual*/ ~LLFloaterLagMeter();
-	void determineClient();
-	void determineNetwork();
-	void determineServer();
-	void updateControls(bool shrink);
-	BOOL isShrunk();
-
-	void onClickShrink();
-
-	bool mShrunk;
-	S32 mMaxWidth, mMinWidth;
-
-	F32 mClientFrameTimeCritical;
-	F32 mClientFrameTimeWarning;
-	LLButton * mClientButton;
-	LLTextBox * mClientText;
-	LLTextBox * mClientCause;
-
-	F32 mNetworkPacketLossCritical;
-	F32 mNetworkPacketLossWarning;
-	F32 mNetworkPingCritical;
-	F32 mNetworkPingWarning;
-	LLButton * mNetworkButton;
-	LLTextBox * mNetworkText;
-	LLTextBox * mNetworkCause;
-
-	F32 mServerFrameTimeCritical;
-	F32 mServerFrameTimeWarning;
-	F32 mServerSingleProcessMaxTime;
-	LLButton * mServerButton;
-	LLTextBox * mServerText;
-	LLTextBox * mServerCause;
-
-	LLStringUtil::format_map_t mStringArgs;
-};
-
-#endif
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index ea839e6f5a..69986f6789 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -113,8 +113,6 @@
 #include "llviewernetwork.h"
 #include "llviewershadermgr.h"
 #include "glod/glod.h"
-#include <boost/algorithm/string.hpp>
-
 
 const S32 SLM_SUPPORTED_VERSION = 3;
 
@@ -3890,21 +3888,21 @@ void LLModelPreview::genLODs(S32 which_lod, U32 decimation, bool enforce_tri_lim
 	for (LLModelLoader::scene::iterator iter = mBaseScene.begin(), endIter = mBaseScene.end(); iter != endIter; ++iter)
 	{
 		for (LLModelLoader::model_instance_list::iterator instance = iter->second.begin(), end_instance = iter->second.end(); instance != end_instance; ++instance)
-		{
+	{
 			LLModel* mdl = instance->mModel;
 			if (mdl)
-			{
+		{
 				instanced_triangle_count += mdl->getNumTriangles();
 			}
 		}
-	}
+		}
 
 	//get the triangle count for the non-instanced set of models
 	for (U32 i = 0; i < mBaseModel.size(); ++i)
 	{
 		triangle_count += mBaseModel[i]->getNumTriangles();
 	}
-	
+
 	//get ratio of uninstanced triangles to instanced triangles
 	F32 triangle_ratio = (F32) triangle_count / (F32) instanced_triangle_count;
 
@@ -4238,28 +4236,28 @@ void LLModelPreview::updateStatusMessages()
 				if (model)
 				{
 					 //for each model in the lod
-					S32 cur_tris = 0;
-					S32 cur_verts = 0;
+			S32 cur_tris = 0;
+			S32 cur_verts = 0;
 					S32 cur_submeshes = model->getNumVolumeFaces();
 
-					for (S32 j = 0; j < cur_submeshes; ++j)
-					{ //for each submesh (face), add triangles and vertices to current total
+			for (S32 j = 0; j < cur_submeshes; ++j)
+			{ //for each submesh (face), add triangles and vertices to current total
 						const LLVolumeFace& face = model->getVolumeFace(j);
-						cur_tris += face.mNumIndices/3;
-						cur_verts += face.mNumVertices;
-					}
+				cur_tris += face.mNumIndices/3;
+				cur_verts += face.mNumVertices;
+			}
 
-					//add this model to the lod total
-					total_tris[lod] += cur_tris;
-					total_verts[lod] += cur_verts;
-					total_submeshes[lod] += cur_submeshes;
+			//add this model to the lod total
+			total_tris[lod] += cur_tris;
+			total_verts[lod] += cur_verts;
+			total_submeshes[lod] += cur_submeshes;
 
-					//store this model's counts to asset data
-					tris[lod].push_back(cur_tris);
-					verts[lod].push_back(cur_verts);
-					submeshes[lod].push_back(cur_submeshes);
-				}
-			}
+			//store this model's counts to asset data
+			tris[lod].push_back(cur_tris);
+			verts[lod].push_back(cur_verts);
+			submeshes[lod].push_back(cur_submeshes);
+		}
+	}
 		}
 	}
 
@@ -4448,28 +4446,28 @@ void LLModelPreview::updateStatusMessages()
 			LLModel* model = instance->mModel;
 			if (model)
 			{
-				S32 cur_submeshes = model->getNumVolumeFaces();
+		S32 cur_submeshes = model->getNumVolumeFaces();
 
-				LLModel::convex_hull_decomposition& decomp = model->mPhysics.mHull;
+		LLModel::convex_hull_decomposition& decomp = model->mPhysics.mHull;
 
-				if (!decomp.empty())
-				{
-					phys_hulls += decomp.size();
-					for (U32 i = 0; i < decomp.size(); ++i)
-					{
-						phys_points += decomp[i].size();
-					}
-				}
-				else
-				{ //choose physics shape OR decomposition, can't use both
-					for (S32 j = 0; j < cur_submeshes; ++j)
-					{ //for each submesh (face), add triangles and vertices to current total
-						const LLVolumeFace& face = model->getVolumeFace(j);
-						phys_tris += face.mNumIndices/3;
-					}
-				}
+		if (!decomp.empty())
+		{
+			phys_hulls += decomp.size();
+			for (U32 i = 0; i < decomp.size(); ++i)
+			{
+				phys_points += decomp[i].size();
 			}
 		}
+		else
+		{ //choose physics shape OR decomposition, can't use both
+			for (S32 j = 0; j < cur_submeshes; ++j)
+			{ //for each submesh (face), add triangles and vertices to current total
+				const LLVolumeFace& face = model->getVolumeFace(j);
+				phys_tris += face.mNumIndices/3;
+			}
+		}
+	}
+		}
 	}
 
 	if (phys_tris > 0)
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index fe29bb38c7..6cce013105 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -2491,8 +2491,6 @@ void LLPanelEstateCovenant::onLoadComplete(LLVFS *vfs,
 		}
 		else
 		{
-			LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 			if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 				LL_ERR_FILE_EMPTY == status)
 			{
diff --git a/indra/newview/llfloatersceneloadstats.cpp b/indra/newview/llfloatersceneloadstats.cpp
new file mode 100644
index 0000000000..8aa93eae96
--- /dev/null
+++ b/indra/newview/llfloatersceneloadstats.cpp
@@ -0,0 +1,40 @@
+/** 
+ * @file llfloatersceneloadstats.cpp
+ * @author Richard Nelson
+ * @brief debug floater for measuring various scene load statistics
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2013, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+ 
+#include "llviewerprecompiledheaders.h"
+
+#include "llfloatersceneloadstats.h"
+
+
+LLFloaterSceneLoadStats::LLFloaterSceneLoadStats( const LLSD& key ) 
+:	LLFloater(key)
+{}
+
+BOOL LLFloaterSceneLoadStats::postBuild()
+{
+	return TRUE;
+}
diff --git a/indra/newview/llfloatersceneloadstats.h b/indra/newview/llfloatersceneloadstats.h
new file mode 100644
index 0000000000..aa414bf544
--- /dev/null
+++ b/indra/newview/llfloatersceneloadstats.h
@@ -0,0 +1,43 @@
+/** 
+ * @file llfloatersceneloadstats.h
+ * @brief debug floater for measuring various scene load statistics
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2013, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_FLOATERSCENELOADSTATS_H
+#define LL_FLOATERSCENELOADSTATS_H
+
+#include "llfloater.h"
+
+class LLFloaterSceneLoadStats : public LLFloater
+{
+	friend class LLFloaterReg;
+private:
+	LLFloaterSceneLoadStats(const LLSD& key);
+
+public:
+	BOOL postBuild();
+
+};
+
+#endif // LL_FLOATERSCENELOADSTATS_H
diff --git a/indra/newview/llfloatersnapshot.cpp b/indra/newview/llfloatersnapshot.cpp
index d8d62e5bbb..285f52fcd6 100644
--- a/indra/newview/llfloatersnapshot.cpp
+++ b/indra/newview/llfloatersnapshot.cpp
@@ -478,7 +478,7 @@ void LLSnapshotLivePreview::draw()
 		{
 			if (mFlashAlpha < 1.f)
 			{
-				mFlashAlpha = lerp(mFlashAlpha, 1.f, LLCriticalDamp::getInterpolant(0.02f));
+				mFlashAlpha = lerp(mFlashAlpha, 1.f, LLSmoothInterpolation::getInterpolant(0.02f));
 			}
 			else
 			{
@@ -487,7 +487,7 @@ void LLSnapshotLivePreview::draw()
 		}
 		else
 		{
-			mFlashAlpha = lerp(mFlashAlpha, 0.f, LLCriticalDamp::getInterpolant(0.15f));
+			mFlashAlpha = lerp(mFlashAlpha, 0.f, LLSmoothInterpolation::getInterpolant(0.15f));
 		}
 
 		// Draw shining animation if appropriate.
@@ -992,7 +992,7 @@ void LLSnapshotLivePreview::saveTexture()
 		llwarns << "Error encoding snapshot" << llendl;
 	}
 
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_SNAPSHOT_COUNT );
+	add(LLStatViewer::SNAPSHOT, 1);
 	
 	mDataSize = 0;
 }
diff --git a/indra/newview/llfolderviewitem.cpp b/indra/newview/llfolderviewitem.cpp
index 3aa16b4413..4eb84224bc 100644
--- a/indra/newview/llfolderviewitem.cpp
+++ b/indra/newview/llfolderviewitem.cpp
@@ -1293,7 +1293,7 @@ S32 LLFolderViewFolder::arrange( S32* width, S32* height, S32 filter_generation)
 	// animate current height towards target height
 	if (llabs(mCurHeight - mTargetHeight) > 1.f)
 	{
-		mCurHeight = lerp(mCurHeight, mTargetHeight, LLCriticalDamp::getInterpolant(mIsOpen ? FOLDER_OPEN_TIME_CONSTANT : FOLDER_CLOSE_TIME_CONSTANT));
+		mCurHeight = lerp(mCurHeight, mTargetHeight, LLSmoothInterpolation::getInterpolant(mIsOpen ? FOLDER_OPEN_TIME_CONSTANT : FOLDER_CLOSE_TIME_CONSTANT));
 
 		requestArrange();
 
@@ -2538,11 +2538,11 @@ void LLFolderViewFolder::draw()
 	}
 	else if (mIsOpen)
 	{
-		mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLCriticalDamp::getInterpolant(0.04f));
+		mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLSmoothInterpolation::getInterpolant(0.04f));
 	}
 	else
 	{
-		mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLCriticalDamp::getInterpolant(0.025f));
+		mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLSmoothInterpolation::getInterpolant(0.025f));
 	}
 
 	bool possibly_has_children = false;
diff --git a/indra/newview/llfollowcam.cpp b/indra/newview/llfollowcam.cpp
index b670af1782..d6dc964802 100644
--- a/indra/newview/llfollowcam.cpp
+++ b/indra/newview/llfollowcam.cpp
@@ -328,11 +328,11 @@ void LLFollowCam::update()
 				F32 force = focusOffsetDistance - focusThresholdNormalizedByDistance;
 			*/
 
-			F32 focusLagLerp = LLCriticalDamp::getInterpolant( mFocusLag );
+			F32 focusLagLerp = LLSmoothInterpolation::getInterpolant( mFocusLag );
 			focus_pt_agent = lerp( focus_pt_agent, whereFocusWantsToBe, focusLagLerp );
 			mSimulatedFocusGlobal = gAgent.getPosGlobalFromAgent(focus_pt_agent);
 		}
-		mRelativeFocus = lerp(mRelativeFocus, (focus_pt_agent - mSubjectPosition) * ~mSubjectRotation, LLCriticalDamp::getInterpolant(0.05f));
+		mRelativeFocus = lerp(mRelativeFocus, (focus_pt_agent - mSubjectPosition) * ~mSubjectRotation, LLSmoothInterpolation::getInterpolant(0.05f));
 	}// if focus is not locked ---------------------------------------------
 
 
@@ -415,7 +415,7 @@ void LLFollowCam::update()
 		//-------------------------------------------------------------------------------------------------
 		if ( distanceFromPositionToIdealPosition > mPositionThreshold )
 		{
-			F32 positionPullLerp = LLCriticalDamp::getInterpolant( mPositionLag );
+			F32 positionPullLerp = LLSmoothInterpolation::getInterpolant( mPositionLag );
 			simulated_pos_agent = lerp( simulated_pos_agent, whereCameraPositionWantsToBe, positionPullLerp );
 		}
 
@@ -435,7 +435,7 @@ void LLFollowCam::update()
 		updateBehindnessConstraint(gAgent.getPosAgentFromGlobal(mSimulatedFocusGlobal), simulated_pos_agent);
 		mSimulatedPositionGlobal = gAgent.getPosGlobalFromAgent(simulated_pos_agent);
 
-		mRelativePos = lerp(mRelativePos, (simulated_pos_agent - mSubjectPosition) * ~mSubjectRotation, LLCriticalDamp::getInterpolant(0.05f));
+		mRelativePos = lerp(mRelativePos, (simulated_pos_agent - mSubjectPosition) * ~mSubjectRotation, LLSmoothInterpolation::getInterpolant(0.05f));
 	} // if position is not locked -----------------------------------------------------------
 
 
@@ -490,7 +490,7 @@ BOOL LLFollowCam::updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_pos
 
 		if ( cameraOffsetAngle > mBehindnessMaxAngle )
 		{
-			F32 fraction = ((cameraOffsetAngle - mBehindnessMaxAngle) / cameraOffsetAngle) * LLCriticalDamp::getInterpolant(mBehindnessLag);
+			F32 fraction = ((cameraOffsetAngle - mBehindnessMaxAngle) / cameraOffsetAngle) * LLSmoothInterpolation::getInterpolant(mBehindnessLag);
 			cam_position = focus + horizontalSubjectBack * (slerp(fraction, camera_offset_rotation, LLQuaternion::DEFAULT));
 			cam_position.mV[VZ] = cameraZ; // clamp z value back to what it was before we started messing with it
 			constraint_active = TRUE;
diff --git a/indra/newview/llgesturemgr.cpp b/indra/newview/llgesturemgr.cpp
index 66ca76bfb0..27a29d3ace 100644
--- a/indra/newview/llgesturemgr.cpp
+++ b/indra/newview/llgesturemgr.cpp
@@ -1137,8 +1137,6 @@ void LLGestureMgr::onLoadComplete(LLVFS *vfs,
 	}
 	else
 	{
-		LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 		if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 			LL_ERR_FILE_EMPTY == status)
 		{
diff --git a/indra/newview/llhudnametag.cpp b/indra/newview/llhudnametag.cpp
index 482294c8a6..3ac11f906b 100644
--- a/indra/newview/llhudnametag.cpp
+++ b/indra/newview/llhudnametag.cpp
@@ -30,6 +30,7 @@
 #include "llhudnametag.h"
 
 #include "llrender.h"
+#include "lltracerecording.h"
 
 #include "llagent.h"
 #include "llviewercontrol.h"
@@ -899,8 +900,8 @@ void LLHUDNameTag::updateAll()
 //		}
 	}
 
-	LLStat* camera_vel_stat = LLViewerCamera::getInstance()->getVelocityStat();
-	F32 camera_vel = camera_vel_stat->getCurrent();
+	LLTrace::CountStatHandle<>* camera_vel_stat = LLViewerCamera::getVelocityStat();
+	F32 camera_vel = LLTrace::get_frame_recording().getLastRecordingPeriod().getPerSec(*camera_vel_stat);
 	if (camera_vel > MAX_STABLE_CAMERA_VELOCITY)
 	{
 		return;
@@ -980,7 +981,7 @@ void LLHUDNameTag::updateAll()
 //		{
 //			continue;
 //		}
-		(*this_object_it)->mPositionOffset = lerp((*this_object_it)->mPositionOffset, (*this_object_it)->mTargetPositionOffset, LLCriticalDamp::getInterpolant(POSITION_DAMPING_TC));
+		(*this_object_it)->mPositionOffset = lerp((*this_object_it)->mPositionOffset, (*this_object_it)->mTargetPositionOffset, LLSmoothInterpolation::getInterpolant(POSITION_DAMPING_TC));
 	}
 }
 
diff --git a/indra/newview/llinventorypanel.cpp b/indra/newview/llinventorypanel.cpp
index f7567baa2b..4c10717ce8 100644
--- a/indra/newview/llinventorypanel.cpp
+++ b/indra/newview/llinventorypanel.cpp
@@ -396,9 +396,10 @@ LLInventoryFilter::EFolderShow LLInventoryPanel::getShowFolderState()
 	return getFilter()->getShowFolderState();
 }
 
+static LLFastTimer::DeclareTimer FTM_REFRESH("Inventory Refresh");
+
 void LLInventoryPanel::modelChanged(U32 mask)
 {
-	static LLFastTimer::DeclareTimer FTM_REFRESH("Inventory Refresh");
 	LLFastTimer t2(FTM_REFRESH);
 
 	bool handled = false;
diff --git a/indra/newview/lllandmarklist.cpp b/indra/newview/lllandmarklist.cpp
index dd402de394..2a131eff58 100644
--- a/indra/newview/lllandmarklist.cpp
+++ b/indra/newview/lllandmarklist.cpp
@@ -141,7 +141,6 @@ void LLLandmarkList::processGetAssetReply(
 	}
 	else
 	{
-		LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
 		// SJB: No use case for a notification here. Use lldebugs instead
 		if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status )
 		{
diff --git a/indra/newview/llmaniprotate.cpp b/indra/newview/llmaniprotate.cpp
index 826e8d560a..0468560e96 100644
--- a/indra/newview/llmaniprotate.cpp
+++ b/indra/newview/llmaniprotate.cpp
@@ -240,7 +240,7 @@ void LLManipRotate::render()
 
 		if (mManipPart == LL_ROT_Z)
 		{
-			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 			gGL.pushMatrix();
 			{
 				// selected part
@@ -251,7 +251,7 @@ void LLManipRotate::render()
 		}
 		else if (mManipPart == LL_ROT_Y)
 		{
-			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 			gGL.pushMatrix();
 			{
 				gGL.rotatef( 90.f, 1.f, 0.f, 0.f );
@@ -262,7 +262,7 @@ void LLManipRotate::render()
 		}
 		else if (mManipPart == LL_ROT_X)
 		{
-			mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 			gGL.pushMatrix();
 			{
 				gGL.rotatef( 90.f, 0.f, 1.f, 0.f );
@@ -273,13 +273,13 @@ void LLManipRotate::render()
 		}
 		else if (mManipPart == LL_ROT_ROLL)
 		{
-			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 		}
 		else if (mManipPart == LL_NO_PART)
 		{
 			if (mHighlightedPart == LL_NO_PART)
 			{
-				mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+				mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 			}
 
 			LLGLEnable cull_face(GL_CULL_FACE);
@@ -294,7 +294,7 @@ void LLManipRotate::render()
 				{
 					if (mHighlightedPart == LL_ROT_Z)
 					{
-						mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+						mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 						gGL.scalef(mManipulatorScales.mV[VZ], mManipulatorScales.mV[VZ], mManipulatorScales.mV[VZ]);
 						// hovering over part
 						gl_ring( mRadiusMeters, width_meters, LLColor4( 0.f, 0.f, 1.f, 1.f ), LLColor4( 0.f, 0.f, 1.f, 0.5f ), CIRCLE_STEPS, i);
@@ -312,7 +312,7 @@ void LLManipRotate::render()
 					gGL.rotatef( 90.f, 1.f, 0.f, 0.f );
 					if (mHighlightedPart == LL_ROT_Y)
 					{
-						mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+						mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 						gGL.scalef(mManipulatorScales.mV[VY], mManipulatorScales.mV[VY], mManipulatorScales.mV[VY]);
 						// hovering over part
 						gl_ring( mRadiusMeters, width_meters, LLColor4( 0.f, 1.f, 0.f, 1.f ), LLColor4( 0.f, 1.f, 0.f, 0.5f ), CIRCLE_STEPS, i);
@@ -330,7 +330,7 @@ void LLManipRotate::render()
 					gGL.rotatef( 90.f, 0.f, 1.f, 0.f );
 					if (mHighlightedPart == LL_ROT_X)
 					{
-						mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+						mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 						gGL.scalef(mManipulatorScales.mV[VX], mManipulatorScales.mV[VX], mManipulatorScales.mV[VX]);
 	
 						// hovering over part
@@ -346,7 +346,7 @@ void LLManipRotate::render()
 
 				if (mHighlightedPart == LL_ROT_ROLL)
 				{
-					mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+					mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 				}
 				
 			}
diff --git a/indra/newview/llmanipscale.cpp b/indra/newview/llmanipscale.cpp
index 00a0bf8894..2d09fb6fe5 100644
--- a/indra/newview/llmanipscale.cpp
+++ b/indra/newview/llmanipscale.cpp
@@ -535,11 +535,11 @@ void LLManipScale::highlightManipulators(S32 x, S32 y)
 	{
 		if (mHighlightedPart == MANIPULATOR_IDS[i])
 		{
-			mManipulatorScales[i] = lerp(mManipulatorScales[i], SELECTED_MANIPULATOR_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales[i] = lerp(mManipulatorScales[i], SELECTED_MANIPULATOR_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 		}
 		else
 		{
-			mManipulatorScales[i] = lerp(mManipulatorScales[i], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
+			mManipulatorScales[i] = lerp(mManipulatorScales[i], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
 		}
 	}
 
diff --git a/indra/newview/llmaniptranslate.cpp b/indra/newview/llmaniptranslate.cpp
index 362308c176..cf5c646893 100644
--- a/indra/newview/llmaniptranslate.cpp
+++ b/indra/newview/llmaniptranslate.cpp
@@ -1921,18 +1921,18 @@ void LLManipTranslate::renderTranslationHandles()
 			{
 				if (index == mManipPart - LL_X_ARROW || index == mHighlightedPart - LL_X_ARROW)
 				{
-					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], SELECTED_ARROW_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
-					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], SELECTED_ARROW_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
 				}
 				else if (index == mManipPart - LL_YZ_PLANE || index == mHighlightedPart - LL_YZ_PLANE)
 				{
-					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
-					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], SELECTED_ARROW_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], SELECTED_ARROW_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
 				}
 				else
 				{
-					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
-					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
+					mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
 				}
 			}
 
diff --git a/indra/newview/llnearbychatbar.cpp b/indra/newview/llnearbychatbar.cpp
index c00dc4bc89..142aaa795b 100644
--- a/indra/newview/llnearbychatbar.cpp
+++ b/indra/newview/llnearbychatbar.cpp
@@ -638,7 +638,7 @@ void send_chat_from_viewer(const std::string& utf8_out_text, EChatType type, S32
 
 	gAgent.sendReliableMessage();
 
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_CHAT_COUNT);
+	add(LLStatViewer::CHAT_COUNT, 1);
 }
 
 class LLChatCommandHandler : public LLCommandHandler
diff --git a/indra/newview/llnetmap.cpp b/indra/newview/llnetmap.cpp
index 1bda7640bd..0abfb59ffd 100644
--- a/indra/newview/llnetmap.cpp
+++ b/indra/newview/llnetmap.cpp
@@ -162,7 +162,7 @@ void LLNetMap::draw()
 	static LLUICachedControl<bool> auto_center("MiniMapAutoCenter", true);
 	if (auto_center)
 	{
-		mCurPan = lerp(mCurPan, mTargetPan, LLCriticalDamp::getInterpolant(0.1f));
+		mCurPan = lerp(mCurPan, mTargetPan, LLSmoothInterpolation::getInterpolant(0.1f));
 	}
 
 	// Prepare a scissor region
diff --git a/indra/newview/llpanelface.cpp b/indra/newview/llpanelface.cpp
index 202be9671b..88f2c5ff52 100644
--- a/indra/newview/llpanelface.cpp
+++ b/indra/newview/llpanelface.cpp
@@ -1049,7 +1049,7 @@ BOOL LLPanelFace::onDragTexture(LLUICtrl*, LLInventoryItem* item)
 
 void LLPanelFace::onCommitTexture( const LLSD& data )
 {
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_EDIT_TEXTURE_COUNT );
+	add(LLStatViewer::EDIT_TEXTURE, 1);
 	sendTexture();
 }
 
diff --git a/indra/newview/llpanelpermissions.cpp b/indra/newview/llpanelpermissions.cpp
index e641370d2e..4e6128018d 100644
--- a/indra/newview/llpanelpermissions.cpp
+++ b/indra/newview/llpanelpermissions.cpp
@@ -915,7 +915,6 @@ bool callback_deed_to_group(const LLSD& notification, const LLSD& response)
 		if(group_id.notNull() && groups_identical && (gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED)))
 		{
 			LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, FALSE);
-//			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_RELEASE_COUNT);
 		}
 	}
 	return false;
diff --git a/indra/newview/llpreviewgesture.cpp b/indra/newview/llpreviewgesture.cpp
index f47928b131..cbb4d5f964 100644
--- a/indra/newview/llpreviewgesture.cpp
+++ b/indra/newview/llpreviewgesture.cpp
@@ -883,8 +883,6 @@ void LLPreviewGesture::onLoadComplete(LLVFS *vfs,
 		}
 		else
 		{
-			LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 			if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 				LL_ERR_FILE_EMPTY == status)
 			{
diff --git a/indra/newview/llpreviewnotecard.cpp b/indra/newview/llpreviewnotecard.cpp
index 3a9360fd23..97c9de4b72 100644
--- a/indra/newview/llpreviewnotecard.cpp
+++ b/indra/newview/llpreviewnotecard.cpp
@@ -339,8 +339,6 @@ void LLPreviewNotecard::onLoadComplete(LLVFS *vfs,
 		}
 		else
 		{
-			LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 			if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 				LL_ERR_FILE_EMPTY == status)
 			{
diff --git a/indra/newview/llpreviewscript.cpp b/indra/newview/llpreviewscript.cpp
index 9c25e69db0..f87a958fbc 100644
--- a/indra/newview/llpreviewscript.cpp
+++ b/indra/newview/llpreviewscript.cpp
@@ -942,7 +942,7 @@ void LLScriptEdCore::onBtnInsertFunction(LLUICtrl *ui, void* userdata)
 
 void LLScriptEdCore::doSave( BOOL close_after_save )
 {
-	LLViewerStats::getInstance()->incStat( LLViewerStats::ST_LSL_SAVE_COUNT );
+	add(LLStatViewer::LSL_SAVES, 1);
 
 	if( mSaveCallback )
 	{
@@ -1146,8 +1146,7 @@ void LLScriptEdCore::onBtnLoadFromFile( void* data )
 
 void LLScriptEdCore::onBtnSaveToFile( void* userdata )
 {
-
-	LLViewerStats::getInstance()->incStat( LLViewerStats::ST_LSL_SAVE_COUNT );
+	add(LLStatViewer::LSL_SAVES, 1);
 
 	LLScriptEdCore* self = (LLScriptEdCore*) userdata;
 
@@ -1670,8 +1669,6 @@ void LLPreviewLSL::onLoadComplete( LLVFS *vfs, const LLUUID& asset_uuid, LLAsset
 		}
 		else
 		{
-			LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 			if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 				LL_ERR_FILE_EMPTY == status)
 			{
@@ -1902,8 +1899,6 @@ void LLLiveLSLEditor::onLoadComplete(LLVFS *vfs, const LLUUID& asset_id,
 		}
 		else
 		{
-			LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-
 			if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 				LL_ERR_FILE_EMPTY == status)
 			{
diff --git a/indra/newview/llscenemonitor.cpp b/indra/newview/llscenemonitor.cpp
new file mode 100644
index 0000000000..c69f276aa2
--- /dev/null
+++ b/indra/newview/llscenemonitor.cpp
@@ -0,0 +1,566 @@
+/** 
+ * @file llscenemonitor.cpp
+ * @brief monitor the scene loading process.
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+#include "llrendertarget.h"
+#include "llscenemonitor.h"
+#include "llviewerwindow.h"
+#include "llviewerdisplay.h"
+#include "llviewercontrol.h"
+#include "llviewershadermgr.h"
+#include "llui.h"
+#include "llstartup.h"
+#include "llappviewer.h"
+#include "llwindow.h"
+#include "llpointer.h"
+#include "llspatialpartition.h"
+#include "llagent.h"
+#include "pipeline.h"
+
+LLSceneMonitorView* gSceneMonitorView = NULL;
+
+//
+//The procedures of monitoring when the scene finishes loading visually, 
+//i.e., no pixel differences among frames, are:
+//1, freeze all dynamic objects and avatars;
+//2, (?) disable all sky and water;
+//3, capture frames periodically, by calling "capture()";
+//4, compute pixel differences between two latest captured frames, by calling "compare()", results are stored at mDiff;
+//5, compute the number of pixels in mDiff above some tolerance threshold in GPU, by calling "queryDiff() -> calcDiffAggregate()";
+//6, use gl occlusion query to fetch the result from GPU, by calling "fetchQueryResult()";
+//END.
+//
+
+LLSceneMonitor::LLSceneMonitor() : 
+	mEnabled(FALSE), 
+	mDiff(NULL),
+	mDiffResult(0.f),
+	mDiffTolerance(0.1f),
+	mCurTarget(NULL), 
+	mNeedsUpdateDiff(FALSE),
+	mHasNewDiff(FALSE),
+	mHasNewQueryResult(FALSE),
+	mDebugViewerVisible(FALSE),
+	mQueryObject(0),
+	mSamplingTime(1.0f),
+	mDiffPixelRatio(0.5f)
+{
+	mFrames[0] = NULL;
+	mFrames[1] = NULL;
+
+	mRecording = new LLTrace::ExtendableRecording();
+	mRecording->start();
+}
+
+LLSceneMonitor::~LLSceneMonitor()
+{
+	destroyClass();
+}
+
+void LLSceneMonitor::destroyClass()
+{
+	reset();
+
+	delete mRecording;
+	mRecording = NULL;
+	mDitheringTexture = NULL;
+}
+
+void LLSceneMonitor::reset()
+{
+	delete mFrames[0];
+	delete mFrames[1];
+	delete mDiff;
+
+	mFrames[0] = NULL;
+	mFrames[1] = NULL;
+	mDiff = NULL;
+	mCurTarget = NULL;
+
+	unfreezeScene();
+
+	if(mQueryObject > 0)
+	{
+		release_occlusion_query_object_name(mQueryObject);
+		mQueryObject = 0;
+	}
+}
+
+void LLSceneMonitor::generateDitheringTexture(S32 width, S32 height)
+{
+#if 1
+	//4 * 4 matrix
+	mDitherMatrixWidth = 4;	
+	S32 dither_matrix[4][4] = 
+	{
+		{1, 9, 3, 11}, 
+		{13, 5, 15, 7}, 
+		{4, 12, 2, 10}, 
+		{16, 8, 14, 6}
+	};
+	
+	mDitherScale = 255.f / 17;
+#else
+	//8 * 8 matrix
+	mDitherMatrixWidth = 16;	
+	S32 dither_matrix[16][16] = 
+	{
+		{1, 49, 13, 61, 4, 52, 16, 64, 1, 49, 13, 61, 4, 52, 16, 64}, 
+		{33, 17, 45, 29, 36, 20, 48, 32, 33, 17, 45, 29, 36, 20, 48, 32}, 
+		{9, 57, 5, 53, 12, 60, 8, 56, 9, 57, 5, 53, 12, 60, 8, 56}, 
+		{41, 25, 37, 21, 44, 28, 40, 24, 41, 25, 37, 21, 44, 28, 40, 24},
+		{3, 51, 15, 63, 2, 50, 14, 62, 3, 51, 15, 63, 2, 50, 14, 62},
+		{35, 19, 47, 31, 34, 18, 46, 30, 35, 19, 47, 31, 34, 18, 46, 30},
+		{11, 59, 7, 55, 10, 58, 6, 54, 11, 59, 7, 55, 10, 58, 6, 54},
+		{43, 27, 39, 23, 42, 26, 38, 22, 43, 27, 39, 23, 42, 26, 38, 22},
+		{1, 49, 13, 61, 4, 52, 16, 64, 1, 49, 13, 61, 4, 52, 16, 64}, 
+		{33, 17, 45, 29, 36, 20, 48, 32, 33, 17, 45, 29, 36, 20, 48, 32}, 
+		{9, 57, 5, 53, 12, 60, 8, 56, 9, 57, 5, 53, 12, 60, 8, 56}, 
+		{41, 25, 37, 21, 44, 28, 40, 24, 41, 25, 37, 21, 44, 28, 40, 24},
+		{3, 51, 15, 63, 2, 50, 14, 62, 3, 51, 15, 63, 2, 50, 14, 62},
+		{35, 19, 47, 31, 34, 18, 46, 30, 35, 19, 47, 31, 34, 18, 46, 30},
+		{11, 59, 7, 55, 10, 58, 6, 54, 11, 59, 7, 55, 10, 58, 6, 54},
+		{43, 27, 39, 23, 42, 26, 38, 22, 43, 27, 39, 23, 42, 26, 38, 22}
+	};
+
+	mDitherScale = 255.f / 65;
+#endif
+
+	LLPointer<LLImageRaw> image_raw = new LLImageRaw(mDitherMatrixWidth, mDitherMatrixWidth, 3);
+	U8* data = image_raw->getData();
+	for (S32 i = 0; i < mDitherMatrixWidth; i++)
+	{
+		for (S32 j = 0; j < mDitherMatrixWidth; j++)
+		{
+			U8 val = dither_matrix[i][j];
+			*data++ = val;
+			*data++ = val;
+			*data++ = val;
+		}
+	}
+
+	mDitheringTexture = LLViewerTextureManager::getLocalTexture(image_raw.get(), FALSE) ;
+	mDitheringTexture->setAddressMode(LLTexUnit::TAM_WRAP);
+	mDitheringTexture->setFilteringOption(LLTexUnit::TFO_POINT);
+	
+	mDitherScaleS = (F32)width / mDitherMatrixWidth;
+	mDitherScaleT = (F32)height / mDitherMatrixWidth;
+}
+
+void LLSceneMonitor::setDebugViewerVisible(BOOL visible) 
+{
+	mDebugViewerVisible = visible;
+}
+
+bool LLSceneMonitor::preCapture()
+{
+	static LLCachedControl<bool> monitor_enabled(gSavedSettings,"SceneLoadingMonitorEnabled");
+	static LLFrameTimer timer;	
+
+	mCurTarget = NULL;
+	if (!LLGLSLShader::sNoFixedFunction)
+	{
+		return false;
+	}
+
+	BOOL enabled = (BOOL)monitor_enabled || mDebugViewerVisible;
+	if(mEnabled != enabled)
+	{
+		if(mEnabled)
+		{
+			reset();
+			unfreezeScene();
+		}
+		else
+		{
+			freezeScene();
+		}
+
+		mEnabled = enabled;
+	}
+
+	if(!mEnabled)
+	{
+		return false;
+	}
+
+	if(gAgent.isPositionChanged())
+	{
+		mRecording->reset();
+	}
+
+	if(timer.getElapsedTimeF32() < mSamplingTime)
+	{
+		return false;
+	}
+	timer.reset();
+	
+	S32 width = gViewerWindow->getWorldViewWidthRaw();
+	S32 height = gViewerWindow->getWorldViewHeightRaw();
+	
+	if(!mFrames[0])
+	{
+		mFrames[0] = new LLRenderTarget();
+		mFrames[0]->allocate(width, height, GL_RGB, false, false, LLTexUnit::TT_TEXTURE, true);
+		gGL.getTexUnit(0)->bind(mFrames[0]);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+		mCurTarget = mFrames[0];
+	}
+	else if(!mFrames[1])
+	{
+		mFrames[1] = new LLRenderTarget();
+		mFrames[1]->allocate(width, height, GL_RGB, false, false, LLTexUnit::TT_TEXTURE, true);
+		gGL.getTexUnit(0)->bind(mFrames[1]);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+		mCurTarget = mFrames[1];
+	}
+	else //swap
+	{
+		mCurTarget = mFrames[0];
+		mFrames[0] = mFrames[1];
+		mFrames[1] = mCurTarget;
+	}
+	
+	if(mCurTarget->getWidth() != width || mCurTarget->getHeight() != height) //size changed
+	{
+		mCurTarget->resize(width, height, GL_RGB);
+	}
+
+	return true;
+}
+
+void LLSceneMonitor::freezeAvatar(LLCharacter* avatarp)
+{
+	mAvatarPauseHandles.push_back(avatarp->requestPause());
+}
+
+void LLSceneMonitor::freezeScene()
+{
+	//freeze all avatars
+	for (std::vector<LLCharacter*>::iterator iter = LLCharacter::sInstances.begin();
+		iter != LLCharacter::sInstances.end(); ++iter)
+	{
+		freezeAvatar((LLCharacter*)(*iter));
+	}
+
+	// freeze everything else
+	gSavedSettings.setBOOL("FreezeTime", TRUE);
+
+	gPipeline.clearRenderTypeMask(LLPipeline::RENDER_TYPE_SKY, LLPipeline::RENDER_TYPE_WL_SKY, 
+		LLPipeline::RENDER_TYPE_WATER, LLPipeline::RENDER_TYPE_CLOUDS, LLPipeline::END_RENDER_TYPES);
+}
+
+void LLSceneMonitor::unfreezeScene()
+{
+	//thaw all avatars
+	mAvatarPauseHandles.clear();
+
+	// thaw everything else
+	gSavedSettings.setBOOL("FreezeTime", FALSE);
+
+	gPipeline.setRenderTypeMask(LLPipeline::RENDER_TYPE_SKY, LLPipeline::RENDER_TYPE_WL_SKY, 
+		LLPipeline::RENDER_TYPE_WATER, LLPipeline::RENDER_TYPE_CLOUDS, LLPipeline::END_RENDER_TYPES);
+}
+
+void LLSceneMonitor::capture()
+{
+	static U32 last_capture_time = 0;
+
+	if(last_capture_time == gFrameCount)
+	{
+		return;
+	}
+	last_capture_time = gFrameCount;
+
+	preCapture();
+
+	if(!mCurTarget)
+	{
+		return;
+	}
+	
+	U32 old_FBO = LLRenderTarget::sCurFBO;
+
+	gGL.getTexUnit(0)->bind(mCurTarget);
+	glBindFramebuffer(GL_READ_FRAMEBUFFER, 0); //point to the main frame buffer.
+		
+	glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, mCurTarget->getWidth(), mCurTarget->getHeight()); //copy the content
+	
+	glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);		
+	glBindFramebuffer(GL_FRAMEBUFFER, old_FBO);
+
+	mCurTarget = NULL;
+	mNeedsUpdateDiff = TRUE;
+}
+
+bool LLSceneMonitor::needsUpdate() const
+{
+	return mNeedsUpdateDiff;
+}
+
+void LLSceneMonitor::compare()
+{
+	if(!mNeedsUpdateDiff)
+	{
+		return;
+	}
+	mNeedsUpdateDiff = FALSE;
+
+	if(!mFrames[0] || !mFrames[1])
+	{
+		return;
+	}
+	if(mFrames[0]->getWidth() != mFrames[1]->getWidth() || mFrames[0]->getHeight() != mFrames[1]->getHeight())
+	{
+		return; //size does not match
+	}
+
+	S32 width = gViewerWindow->getWindowWidthRaw();
+	S32 height = gViewerWindow->getWindowHeightRaw();
+	if(!mDiff)
+	{
+		mDiff = new LLRenderTarget();
+		mDiff->allocate(width, height, GL_RGBA, false, false, LLTexUnit::TT_TEXTURE, true);
+
+		generateDitheringTexture(width, height);
+	}
+	else if(mDiff->getWidth() != width || mDiff->getHeight() != height)
+	{
+		mDiff->resize(width, height, GL_RGBA);
+		generateDitheringTexture(width, height);
+	}
+
+	mDiff->bindTarget();
+	mDiff->clear();
+	
+	gTwoTextureCompareProgram.bind();
+	
+	gTwoTextureCompareProgram.uniform1f("dither_scale", mDitherScale);
+	gTwoTextureCompareProgram.uniform1f("dither_scale_s", mDitherScaleS);
+	gTwoTextureCompareProgram.uniform1f("dither_scale_t", mDitherScaleT);
+
+	gGL.getTexUnit(0)->activate();
+	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(0)->bind(mFrames[0]);
+	gGL.getTexUnit(0)->activate();
+
+	gGL.getTexUnit(1)->activate();
+	gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(1)->bind(mFrames[1]);
+	gGL.getTexUnit(1)->activate();	
+	
+	gGL.getTexUnit(2)->activate();
+	gGL.getTexUnit(2)->enable(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(2)->bind(mDitheringTexture);
+	gGL.getTexUnit(2)->activate();	
+
+	gl_rect_2d_simple_tex(width, height);
+	
+	mDiff->flush();	
+
+	gTwoTextureCompareProgram.unbind();
+
+	gGL.getTexUnit(0)->disable();
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(1)->disable();
+	gGL.getTexUnit(1)->unbind(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(2)->disable();
+	gGL.getTexUnit(2)->unbind(LLTexUnit::TT_TEXTURE);
+
+	mHasNewDiff = TRUE;
+	
+	//send out the query request.
+	queryDiff();
+}
+
+void LLSceneMonitor::queryDiff()
+{
+	if(mDebugViewerVisible)
+	{
+		return;
+	}
+
+	calcDiffAggregate();
+}
+
+//calculate Diff aggregate information in GPU, and enable gl occlusion query to capture it.
+void LLSceneMonitor::calcDiffAggregate()
+{
+	if(!mHasNewDiff && !mDebugViewerVisible)
+	{
+		return;
+	}	
+
+	if(!mQueryObject)
+	{
+		mQueryObject = get_new_occlusion_query_object_name();
+	}
+
+	LLGLDepthTest depth(true, false, GL_ALWAYS);
+	if(!mDebugViewerVisible)
+	{
+		glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+	}
+
+	LLGLSLShader* cur_shader = NULL;
+	
+	cur_shader = LLGLSLShader::sCurBoundShaderPtr;
+	gOneTextureFilterProgram.bind();
+	gOneTextureFilterProgram.uniform1f("tolerance", mDiffTolerance);
+
+	if(mHasNewDiff)
+	{
+		glBeginQueryARB(GL_SAMPLES_PASSED_ARB, mQueryObject);
+	}
+
+	gl_draw_scaled_target(0, 0, S32(mDiff->getWidth() * mDiffPixelRatio), S32(mDiff->getHeight() * mDiffPixelRatio), mDiff);
+
+	if(mHasNewDiff)
+	{
+		glEndQueryARB(GL_SAMPLES_PASSED_ARB);
+		mHasNewDiff = FALSE;	
+		mHasNewQueryResult = TRUE;
+	}
+		
+	gOneTextureFilterProgram.unbind();
+	
+	if(cur_shader != NULL)
+	{
+		cur_shader->bind();
+	}
+	
+	if(!mDebugViewerVisible)
+	{
+		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+	}	
+}
+
+static LLTrace::MeasurementStatHandle<> sFramePixelDiff("FramePixelDifference");
+void LLSceneMonitor::fetchQueryResult()
+{
+	if(!mHasNewQueryResult)
+	{
+		return;
+	}
+	mHasNewQueryResult = FALSE;
+
+	GLuint available = 0;
+	glGetQueryObjectuivARB(mQueryObject, GL_QUERY_RESULT_AVAILABLE_ARB, &available);
+	if(!available)
+	{
+		return;
+	}
+
+	GLuint count = 0;
+	glGetQueryObjectuivARB(mQueryObject, GL_QUERY_RESULT_ARB, &count);
+	
+	mDiffResult = count * 0.5f / (mDiff->getWidth() * mDiff->getHeight() * mDiffPixelRatio * mDiffPixelRatio); //0.5 -> (front face + back face)
+
+	if(mDiffResult > 0.01f)
+	{
+		mRecording->extend();
+		sample(sFramePixelDiff, mDiffResult);
+	}
+	//llinfos << count << " : " << mDiffResult << llendl;
+}
+//-------------------------------------------------------------------------------------------------------------
+//definition of class LLSceneMonitorView
+//-------------------------------------------------------------------------------------------------------------
+LLSceneMonitorView::LLSceneMonitorView(const LLRect& rect)
+	:	LLFloater(LLSD())
+{
+	setRect(rect);
+	setVisible(FALSE);
+	
+	setCanMinimize(false);
+	setCanClose(true);
+}
+
+void LLSceneMonitorView::onClickCloseBtn()
+{
+	setVisible(false);	
+}
+
+void LLSceneMonitorView::setVisible(BOOL visible)
+{
+	LLSceneMonitor::getInstance()->setDebugViewerVisible(visible);
+
+	LLView::setVisible(visible);
+}
+
+void LLSceneMonitorView::draw()
+{
+	const LLRenderTarget* target = LLSceneMonitor::getInstance()->getDiffTarget();
+	if(!target)
+	{
+		return;
+	}
+
+	F32 ratio = LLSceneMonitor::getInstance()->getDiffPixelRatio();
+	S32 height = (S32)(target->getHeight() * ratio);
+	S32 width = (S32)(target->getWidth() * ratio);
+	//S32 height = (S32) (gViewerWindow->getWindowRectScaled().getHeight()*0.5f);
+	//S32 width = (S32) (gViewerWindow->getWindowRectScaled().getWidth() * 0.5f);
+	
+	LLRect new_rect;
+	new_rect.setLeftTopAndSize(getRect().mLeft, getRect().mTop, width, height);
+	setRect(new_rect);
+
+	//draw background
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4(0.f, 0.f, 0.f, 0.25f));
+	
+	LLSceneMonitor::getInstance()->calcDiffAggregate();
+
+	//show some texts
+	LLColor4 color = LLColor4::white;
+	S32 line_height = LLFontGL::getFontMonospace()->getLineHeight();
+
+	S32 lines = 0;
+	std::string num_str = llformat("Frame difference: %.6f", LLSceneMonitor::getInstance()->getDiffResult());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	num_str = llformat("Pixel tolerance: (R+G+B) < %.4f", LLSceneMonitor::getInstance()->getDiffTolerance());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	num_str = llformat("Sampling time: %.3f seconds", LLSceneMonitor::getInstance()->getSamplingTime());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	num_str = llformat("Scene Loading time: %.3f seconds", (F32)LLSceneMonitor::getInstance()->getRecording()->getAcceptedRecording().getDuration().value());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	LLView::draw();
+}
+
diff --git a/indra/newview/llscenemonitor.h b/indra/newview/llscenemonitor.h
new file mode 100644
index 0000000000..709650e206
--- /dev/null
+++ b/indra/newview/llscenemonitor.h
@@ -0,0 +1,119 @@
+/** 
+ * @file llscenemonitor.h
+ * @brief monitor the process of scene loading
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLSCENE_MONITOR_H
+#define LL_LLSCENE_MONITOR_H
+
+#include "llsingleton.h"
+#include "llmath.h"
+#include "llfloater.h"
+#include "llcharacter.h"
+#include "lltracerecording.h"
+
+class LLCharacter;
+class LLRenderTarget;
+class LLViewerTexture;
+
+class LLSceneMonitor :  public LLSingleton<LLSceneMonitor>
+{
+public:
+	LLSceneMonitor();
+	~LLSceneMonitor();
+
+	void destroyClass();
+	
+	void freezeAvatar(LLCharacter* avatarp);
+	void setDebugViewerVisible(BOOL visible);
+
+	void capture(); //capture the main frame buffer
+	void compare(); //compare the stored two buffers.	
+	void queryDiff();	
+	void fetchQueryResult();
+	void calcDiffAggregate();
+	void setDiffTolerance(F32 tol) {mDiffTolerance = tol;}
+
+	const LLRenderTarget* getDiffTarget() const {return mDiff;}
+	F32  getDiffTolerance() const {return mDiffTolerance;}
+	F32  getDiffResult() const { return mDiffResult;}
+	F32  getSamplingTime() const { return mSamplingTime;}
+	F32  getDiffPixelRatio() const { return mDiffPixelRatio;}
+	bool isEnabled()const {return mEnabled;}
+	bool needsUpdate() const;
+	
+	LLTrace::ExtendableRecording* getRecording() const {return mRecording;}
+
+private:
+	void freezeScene();
+	void unfreezeScene();
+	void reset();
+	bool preCapture();
+	void generateDitheringTexture(S32 width, S32 height);
+
+private:
+	BOOL mEnabled;
+	BOOL mNeedsUpdateDiff;
+	BOOL mHasNewDiff;
+	BOOL mHasNewQueryResult;
+	BOOL mDebugViewerVisible;
+
+	LLRenderTarget* mFrames[2];
+	LLRenderTarget* mDiff;
+	LLRenderTarget* mCurTarget;
+
+	GLuint  mQueryObject; //used for glQuery
+	F32     mDiffResult;  //aggregate results of mDiff.
+	F32     mDiffTolerance; //pixels are filtered out when R+G+B < mDiffTolerance
+
+	F32     mSamplingTime; //time interval to capture frames, in seconds
+	F32     mDiffPixelRatio; //ratio of pixels used for comparison against the original mDiff size along one dimension
+
+	LLPointer<LLViewerTexture> mDitheringTexture;
+	S32                        mDitherMatrixWidth;
+	F32                        mDitherScale;
+	F32                        mDitherScaleS;
+	F32                        mDitherScaleT;
+
+	std::vector<LLAnimPauseRequest> mAvatarPauseHandles;
+
+	LLTrace::ExtendableRecording* mRecording;
+};
+
+class LLSceneMonitorView : public LLFloater
+{
+public:
+	LLSceneMonitorView(const LLRect& rect);
+
+	virtual void draw();
+	virtual void setVisible(BOOL visible);
+
+protected:
+	virtual void onClickCloseBtn();
+};
+
+extern LLSceneMonitorView* gSceneMonitorView;
+
+#endif
+
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 343316d30a..0079b3bab8 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -1547,7 +1547,7 @@ void LLObjectSelection::applyNoCopyTextureToTEs(LLViewerInventoryItem* item)
 				}
 
 				// apply texture for the selected faces
-				LLViewerStats::getInstance()->incStat(LLViewerStats::ST_EDIT_TEXTURE_COUNT );
+				add(LLStatViewer::EDIT_TEXTURE, 1);
 				object->setTEImage(te, image);
 				dialog_refresh_all();
 
@@ -2968,10 +2968,10 @@ struct LLSelectGetFirstTest
 		// continue testing.
 		return true;
 	}
-
+	
 	bool mIdentical;
 	LLUUID mFirstValue;
-
+	
 protected:
 	virtual const LLUUID& getValueFromNode(LLSelectNode* node) = 0;
 
@@ -2982,18 +2982,18 @@ private:
 void LLSelectMgr::getFirst(LLSelectGetFirstTest* test)
 {
 	if (gSavedSettings.getBOOL("EditLinkedParts"))
-	{
+{
 		for (LLObjectSelection::valid_iterator iter = getSelection()->valid_begin();
 			iter != getSelection()->valid_end(); ++iter )
-		{
+	{
 			if (!test->checkMatchingNode(*iter))
-			{
+		{
 				break;
 			}
 		}
-	}
-	else
-	{
+		}
+		else
+		{
 		for (LLObjectSelection::root_object_iterator iter = getSelection()->root_object_begin();
 			iter != getSelection()->root_object_end(); ++iter )
 		{
@@ -3003,31 +3003,31 @@ void LLSelectMgr::getFirst(LLSelectGetFirstTest* test)
 			}
 		}
 	}
-}
+	}
 
 //-----------------------------------------------------------------------------
 // selectGetCreator()
 // Creator information only applies to roots unless editing linked parts.
 //-----------------------------------------------------------------------------
 struct LLSelectGetFirstCreator : public LLSelectGetFirstTest
-{
+	{
 protected:
 	virtual const LLUUID& getValueFromNode(LLSelectNode* node)
-	{
+		{
 		return node->mPermissions->getCreator();
-	}
+		}
 };
 
 BOOL LLSelectMgr::selectGetCreator(LLUUID& result_id, std::string& name)
-{
+		{
 	LLSelectGetFirstCreator test;
 	getFirst(&test);
 
 	if (test.mFirstValue.isNull())
-	{
-		name = LLTrans::getString("AvatarNameNobody");
+		{
+			name = LLTrans::getString("AvatarNameNobody");
 		return FALSE;
-	}
+		}
 	
 	result_id = test.mFirstValue;
 	
@@ -3048,18 +3048,18 @@ BOOL LLSelectMgr::selectGetCreator(LLUUID& result_id, std::string& name)
 // Owner information only applies to roots unless editing linked parts.
 //-----------------------------------------------------------------------------
 struct LLSelectGetFirstOwner : public LLSelectGetFirstTest
-{
+	{
 protected:
 	virtual const LLUUID& getValueFromNode(LLSelectNode* node)
-	{
+		{
 		// Don't use 'getOwnership' since we return a reference, not a copy.
 		// Will return LLUUID::null if unowned (which is not allowed and should never happen.)
 		return node->mPermissions->isGroupOwned() ? node->mPermissions->getGroup() : node->mPermissions->getOwner();
-	}
+		}
 };
 
 BOOL LLSelectMgr::selectGetOwner(LLUUID& result_id, std::string& name)
-{
+		{
 	LLSelectGetFirstOwner test;
 	getFirst(&test);
 
@@ -3098,34 +3098,34 @@ struct LLSelectGetFirstLastOwner : public LLSelectGetFirstTest
 {
 protected:
 	virtual const LLUUID& getValueFromNode(LLSelectNode* node)
-	{
+{
 		return node->mPermissions->getLastOwner();
 	}
 };
 
 BOOL LLSelectMgr::selectGetLastOwner(LLUUID& result_id, std::string& name)
-{
+	{
 	LLSelectGetFirstLastOwner test;
 	getFirst(&test);
 
 	if (test.mFirstValue.isNull())
-	{
-		return FALSE;
-	}
+		{
+			return FALSE;
+		}
 
 	result_id = test.mFirstValue;
 	
 	if (test.mIdentical)
-	{
+		{
 		name = LLSLURL("agent", test.mFirstValue, "inspect").getSLURLString();
-	}
-	else
-	{
+		}
+		else
+		{
 		name.assign( "" );
-	}
+			}
 
 	return test.mIdentical;
-}
+		}
 
 //-----------------------------------------------------------------------------
 // selectGetGroup()
@@ -3155,16 +3155,16 @@ BOOL LLSelectMgr::selectGetGroup(LLUUID& result_id)
 // Returns TRUE if the first selected is group owned.
 //-----------------------------------------------------------------------------
 struct LLSelectGetFirstGroupOwner : public LLSelectGetFirstTest
-{
+	{
 protected:
 	virtual const LLUUID& getValueFromNode(LLSelectNode* node)
-	{
+		{
 		if (node->mPermissions->isGroupOwned())
 		{
 			return node->mPermissions->getGroup();
 		}
 		return LLUUID::null;
-	}
+	}	
 };
 
 BOOL LLSelectMgr::selectIsGroupOwned()
@@ -3414,9 +3414,7 @@ bool LLSelectMgr::confirmDelete(const LLSD& notification, const LLSD& response,
 			gAgentCamera.setLookAt(LOOKAT_TARGET_CLEAR);
 
 			// Keep track of how many objects have been deleted.
-			F64 obj_delete_count = LLViewerStats::getInstance()->getStat(LLViewerStats::ST_OBJECT_DELETE_COUNT);
-			obj_delete_count += LLSelectMgr::getInstance()->mSelectedObjects->getObjectCount();
-			LLViewerStats::getInstance()->setStat(LLViewerStats::ST_OBJECT_DELETE_COUNT, obj_delete_count );
+			add(LLStatViewer::DELETE_OBJECT, LLSelectMgr::getInstance()->mSelectedObjects->getObjectCount());
 		}
 		break;
 	case 1:
diff --git a/indra/newview/llsidepaneltaskinfo.cpp b/indra/newview/llsidepaneltaskinfo.cpp
index 5532bdc71a..986ac14140 100644
--- a/indra/newview/llsidepaneltaskinfo.cpp
+++ b/indra/newview/llsidepaneltaskinfo.cpp
@@ -947,7 +947,6 @@ static bool callback_deed_to_group(const LLSD& notification, const LLSD& respons
 		if (group_id.notNull() && groups_identical && (gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED)))
 		{
 			LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, FALSE);
-//			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_RELEASE_COUNT);
 		}
 	}
 	return FALSE;
diff --git a/indra/newview/llsimplestat.h b/indra/newview/llsimplestat.h
index 9d7780c4f9..80ce99b774 100644
--- a/indra/newview/llsimplestat.h
+++ b/indra/newview/llsimplestat.h
@@ -99,43 +99,43 @@ public:
 	 * values back to zero.
 	 */
 	void reset()
-		{
-			mCount = 0;
-			mMin = Value(0);
-			mMax = Value(0);
-			mTotal = Value(0);
-		}
+	{
+		mCount = 0;
+		mMin = Value(0);
+		mMax = Value(0);
+		mTotal = Value(0);
+	}
 
 	void record(Value v)
+	{
+		if (mCount)
+		{
+			mMin = llmin(mMin, v);
+			mMax = llmax(mMax, v);
+		}
+		else
 		{
-			if (mCount)
-			{
-				mMin = llmin(mMin, v);
-				mMax = llmax(mMax, v);
-			}
-			else
-			{
-				mMin = v;
-				mMax = v;
-			}
-			mTotal += v;
-			++mCount;
+			mMin = v;
+			mMax = v;
 		}
+		mTotal += v;
+		++mCount;
+	}
 
 	void merge(const LLSimpleStatMMM<VALUE_T> & src)
+	{
+		if (! mCount)
+		{
+			*this = src;
+		}
+		else if (src.mCount)
 		{
-			if (! mCount)
-			{
-				*this = src;
-			}
-			else if (src.mCount)
-			{
-				mMin = llmin(mMin, src.mMin);
-				mMax = llmax(mMax, src.mMax);
-				mCount += src.mCount;
-				mTotal += src.mTotal;
-			}
+			mMin = llmin(mMin, src.mMin);
+			mMax = llmax(mMax, src.mMax);
+			mCount += src.mCount;
+			mTotal += src.mTotal;
 		}
+	}
 	
 	inline U32 getCount() const		{ return mCount; }
 	inline Value getMin() const		{ return mMin; }
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index af740fe73d..53f5658815 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -126,106 +126,28 @@ protected:
 
 static LLOcclusionQueryPool sQueryPool;
 
-//static counter for frame to switch LOD on
-
-void sg_assert(BOOL expr)
+GLuint get_new_occlusion_query_object_name()
 {
-#if LL_OCTREE_PARANOIA_CHECK
-	if (!expr)
-	{
-		llerrs << "Octree invalid!" << llendl;
-	}
-#endif
+	return sQueryPool.allocate();
 }
 
-S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad)
+void release_occlusion_query_object_name(GLuint name)
 {
-	return AABBSphereIntersectR2(min, max, origin, rad*rad);
-}
-
-S32 AABBSphereIntersectR2(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &r)
-{
-	F32 d = 0.f;
-	F32 t;
-	
-	if ((min-origin).magVecSquared() < r &&
-		(max-origin).magVecSquared() < r)
-	{
-		return 2;
-	}
-
-	for (U32 i = 0; i < 3; i++)
-	{
-		if (origin.mV[i] < min.mV[i])
-		{
-			t = min.mV[i] - origin.mV[i];
-			d += t*t;
-		}
-		else if (origin.mV[i] > max.mV[i])
-		{
-			t = origin.mV[i] - max.mV[i];
-			d += t*t;
-		}
-
-		if (d > r)
-		{
-			return 0;
-		}
-	}
-
-	return 1;
+	sQueryPool.release(name);
 }
 
+//static counter for frame to switch LOD on
 
-S32 AABBSphereIntersect(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &rad)
-{
-	return AABBSphereIntersectR2(min, max, origin, rad*rad);
-}
-
-S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &r)
+void sg_assert(BOOL expr)
 {
-	F32 d = 0.f;
-	F32 t;
-	
-	LLVector4a origina;
-	origina.load3(origin.mV);
-
-	LLVector4a v;
-	v.setSub(min, origina);
-	
-	if (v.dot3(v) < r)
-	{
-		v.setSub(max, origina);
-		if (v.dot3(v) < r)
-		{
-			return 2;
-		}
-	}
-
-
-	for (U32 i = 0; i < 3; i++)
+#if LL_OCTREE_PARANOIA_CHECK
+	if (!expr)
 	{
-		if (origin.mV[i] < min[i])
-		{
-			t = min[i] - origin.mV[i];
-			d += t*t;
-		}
-		else if (origin.mV[i] > max[i])
-		{
-			t = origin.mV[i] - max[i];
-			d += t*t;
-		}
-
-		if (d > r)
-		{
-			return 0;
-		}
+		llerrs << "Octree invalid!" << llendl;
 	}
-
-	return 1;
+#endif
 }
 
-
 typedef enum
 {
 	b000 = 0x00,
@@ -358,7 +280,7 @@ LLSpatialGroup::~LLSpatialGroup()
 		gPipeline.checkReferences(this);
 	}
 
-	if (isState(DEAD))
+	if (hasState(DEAD))
 	{
 		sZombieGroups--;
 	}
@@ -371,7 +293,7 @@ LLSpatialGroup::~LLSpatialGroup()
 		{
 			if (mOcclusionQuery[i])
 			{
-				sQueryPool.release(mOcclusionQuery[i]);
+				release_occlusion_query_object_name(mOcclusionQuery[i]);
 			}
 		}
 	}
@@ -514,17 +436,8 @@ BOOL LLSpatialGroup::isHUDGroup()
 
 BOOL LLSpatialGroup::isRecentlyVisible() const
 {
-	return (LLDrawable::getCurrentFrame() - mVisible[LLViewerCamera::sCurCameraID]) < LLDrawable::getMinVisFrameRange() ;
-}
-
-BOOL LLSpatialGroup::isVisible() const
-{
-	return mVisible[LLViewerCamera::sCurCameraID] >= LLDrawable::getCurrentFrame() ? TRUE : FALSE;
-}
-
-void LLSpatialGroup::setVisible()
-{
-	mVisible[LLViewerCamera::sCurCameraID] = LLDrawable::getCurrentFrame();
+	const S32 MIN_VIS_FRAME_RANGE = 2;
+	return (LLDrawable::getCurrentFrame() - mVisible[LLViewerCamera::sCurCameraID]) < MIN_VIS_FRAME_RANGE ;
 }
 
 void LLSpatialGroup::validate()
@@ -619,7 +532,7 @@ BOOL LLSpatialGroup::updateInGroup(LLDrawable *drawablep, BOOL immediate)
 	OctreeNode* parent = mOctreeNode->getOctParent();
 	
 	if (mOctreeNode->isInside(drawablep->getPositionGroup()) && 
-		(mOctreeNode->contains(drawablep) ||
+		(mOctreeNode->contains(drawablep->getEntry()) ||
 		 (drawablep->getBinRadius() > mOctreeNode->getSize()[0] &&
 				parent && parent->getElementCount() >= gOctreeMaxCapacity)))
 	{
@@ -633,15 +546,14 @@ BOOL LLSpatialGroup::updateInGroup(LLDrawable *drawablep, BOOL immediate)
 }
 
 
-BOOL LLSpatialGroup::addObject(LLDrawable *drawablep, BOOL add_all, BOOL from_octree)
+BOOL LLSpatialGroup::addObject(LLDrawable *drawablep)
 {
-	if (!from_octree)
+	if(!drawablep)
 	{
-		mOctreeNode->insert(drawablep);
+		return FALSE;
 	}
-	else
 	{
-		drawablep->setSpatialGroup(this);
+		drawablep->setGroup(this);
 		setState(OBJECT_DIRTY | GEOM_DIRTY);
 		setOcclusionState(LLSpatialGroup::DISCARD_QUERY, LLSpatialGroup::STATE_MODE_ALL_CAMERAS);
 		gPipeline.markRebuild(this, TRUE);
@@ -664,7 +576,7 @@ void LLSpatialGroup::rebuildGeom()
 	{
 		mSpatialPartition->rebuildGeom(this);
 
-		if (isState(LLSpatialGroup::MESH_DIRTY))
+		if (hasState(LLSpatialGroup::MESH_DIRTY))
 		{
 			gPipeline.markMeshDirty(this);
 		}
@@ -686,7 +598,7 @@ static LLFastTimer::DeclareTimer FTM_GET_GEOMETRY("Get Geometry");
 
 void LLSpatialPartition::rebuildGeom(LLSpatialGroup* group)
 {
-	if (group->isDead() || !group->isState(LLSpatialGroup::GEOM_DIRTY))
+	if (group->isDead() || !group->hasState(LLSpatialGroup::GEOM_DIRTY))
 	{
 		return;
 	}
@@ -751,103 +663,6 @@ void LLSpatialPartition::rebuildMesh(LLSpatialGroup* group)
 
 }
 
-BOOL LLSpatialGroup::boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut)
-{	
-	const OctreeNode* node = mOctreeNode;
-
-	if (node->isEmpty())
-	{	//don't do anything if there are no objects
-		if (empty && mOctreeNode->getParent())
-		{	//only root is allowed to be empty
-			OCT_ERRS << "Empty leaf found in octree." << llendl;
-		}
-		return FALSE;
-	}
-
-	LLVector4a& newMin = mObjectExtents[0];
-	LLVector4a& newMax = mObjectExtents[1];
-	
-	if (isState(OBJECT_DIRTY))
-	{ //calculate new bounding box
-		clearState(OBJECT_DIRTY);
-
-		//initialize bounding box to first element
-		OctreeNode::const_element_iter i = node->getDataBegin();
-		LLDrawable* drawablep = *i;
-		const LLVector4a* minMax = drawablep->getSpatialExtents();
-
-		newMin = minMax[0];
-		newMax = minMax[1];
-
-		for (++i; i != node->getDataEnd(); ++i)
-		{
-			drawablep = *i;
-			minMax = drawablep->getSpatialExtents();
-			
-			update_min_max(newMin, newMax, minMax[0]);
-			update_min_max(newMin, newMax, minMax[1]);
-
-			//bin up the object
-			/*for (U32 i = 0; i < 3; i++)
-			{
-				if (minMax[0].mV[i] < newMin.mV[i])
-				{
-					newMin.mV[i] = minMax[0].mV[i];
-				}
-				if (minMax[1].mV[i] > newMax.mV[i])
-				{
-					newMax.mV[i] = minMax[1].mV[i];
-				}
-			}*/
-		}
-		
-		mObjectBounds[0].setAdd(newMin, newMax);
-		mObjectBounds[0].mul(0.5f);
-		mObjectBounds[1].setSub(newMax, newMin);
-		mObjectBounds[1].mul(0.5f);
-	}
-	
-	if (empty)
-	{
-		minOut = newMin;
-		maxOut = newMax;
-	}
-	else
-	{
-		minOut.setMin(minOut, newMin);
-		maxOut.setMax(maxOut, newMax);
-	}
-		
-	return TRUE;
-}
-
-void LLSpatialGroup::unbound()
-{
-	if (isState(DIRTY))
-	{
-		return;
-	}
-
-	setState(DIRTY);
-	
-	//all the parent nodes need to rebound this child
-	if (mOctreeNode)
-	{
-		OctreeNode* parent = (OctreeNode*) mOctreeNode->getParent();
-		while (parent != NULL)
-		{
-			LLSpatialGroup* group = (LLSpatialGroup*) parent->getListener(0);
-			if (group->isState(DIRTY))
-			{
-				return;
-			}
-			
-			group->setState(DIRTY);
-			parent = (OctreeNode*) parent->getParent();
-		}
-	}
-}
-
 LLSpatialGroup* LLSpatialGroup::getParent()
 {
 	if (isDead())
@@ -871,17 +686,19 @@ LLSpatialGroup* LLSpatialGroup::getParent()
 
 BOOL LLSpatialGroup::removeObject(LLDrawable *drawablep, BOOL from_octree)
 {
+	if(!drawablep)
+	{
+		return FALSE;
+	}
+
 	unbound();
 	if (mOctreeNode && !from_octree)
 	{
-		if (!mOctreeNode->remove(drawablep))
-		{
-			OCT_ERRS << "Could not remove drawable from spatial group" << llendl;
-		}
+		drawablep->setGroup(NULL);
 	}
 	else
 	{
-		drawablep->setSpatialGroup(NULL);
+		drawablep->setGroup(NULL);
 		setState(GEOM_DIRTY);
 		gPipeline.markRebuild(this, TRUE);
 
@@ -928,12 +745,12 @@ void LLSpatialGroup::shift(const LLVector4a &offset)
 	}
 }
 
-class LLSpatialSetState : public LLSpatialGroup::OctreeTraveler
+class LLSpatialSetState : public OctreeTraveler
 {
 public:
 	U32 mState;
 	LLSpatialSetState(U32 state) : mState(state) { }
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->setState(mState); }	
+	virtual void visit(const OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->setState(mState); }	
 };
 
 class LLSpatialSetStateDiff : public LLSpatialSetState
@@ -941,24 +758,17 @@ class LLSpatialSetStateDiff : public LLSpatialSetState
 public:
 	LLSpatialSetStateDiff(U32 state) : LLSpatialSetState(state) { }
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
+	virtual void traverse(const OctreeNode* n)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
 		
-		if (!group->isState(mState))
+		if (!group->hasState(mState))
 		{
-			LLSpatialGroup::OctreeTraveler::traverse(n);
+			OctreeTraveler::traverse(n);
 		}
 	}
 };
 
-void LLSpatialGroup::setState(U32 state) 
-{ 
-	mState |= state; 
-	
-	llassert(state <= LLSpatialGroup::STATE_MASK);
-}	
-
 void LLSpatialGroup::setState(U32 state, S32 mode) 
 {
 	llassert(state <= LLSpatialGroup::STATE_MASK);
@@ -982,12 +792,12 @@ void LLSpatialGroup::setState(U32 state, S32 mode)
 	}
 }
 
-class LLSpatialClearState : public LLSpatialGroup::OctreeTraveler
+class LLSpatialClearState : public OctreeTraveler
 {
 public:
 	U32 mState;
 	LLSpatialClearState(U32 state) : mState(state) { }
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->clearState(mState); }
+	virtual void visit(const OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->clearState(mState); }
 };
 
 class LLSpatialClearStateDiff : public LLSpatialClearState
@@ -995,24 +805,17 @@ class LLSpatialClearStateDiff : public LLSpatialClearState
 public:
 	LLSpatialClearStateDiff(U32 state) : LLSpatialClearState(state) { }
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
+	virtual void traverse(const OctreeNode* n)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
 		
-		if (group->isState(mState))
+		if (group->hasState(mState))
 		{
-			LLSpatialGroup::OctreeTraveler::traverse(n);
+			OctreeTraveler::traverse(n);
 		}
 	}
 };
 
-void LLSpatialGroup::clearState(U32 state)
-{
-	llassert(state <= LLSpatialGroup::STATE_MASK);
-
-	mState &= ~state; 
-}
-
 void LLSpatialGroup::clearState(U32 state, S32 mode)
 {
 	llassert(state <= LLSpatialGroup::STATE_MASK);
@@ -1036,22 +839,15 @@ void LLSpatialGroup::clearState(U32 state, S32 mode)
 	}
 }
 
-BOOL LLSpatialGroup::isState(U32 state) const
-{ 
-	llassert(state <= LLSpatialGroup::STATE_MASK);
-
-	return mState & state ? TRUE : FALSE; 
-}
-
 //=====================================
 //		Occlusion State Set/Clear
 //=====================================
-class LLSpatialSetOcclusionState : public LLSpatialGroup::OctreeTraveler
+class LLSpatialSetOcclusionState : public OctreeTraveler
 {
 public:
 	U32 mState;
 	LLSpatialSetOcclusionState(U32 state) : mState(state) { }
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->setOcclusionState(mState); }	
+	virtual void visit(const OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->setOcclusionState(mState); }	
 };
 
 class LLSpatialSetOcclusionStateDiff : public LLSpatialSetOcclusionState
@@ -1059,13 +855,13 @@ class LLSpatialSetOcclusionStateDiff : public LLSpatialSetOcclusionState
 public:
 	LLSpatialSetOcclusionStateDiff(U32 state) : LLSpatialSetOcclusionState(state) { }
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
+	virtual void traverse(const OctreeNode* n)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
 		
 		if (!group->isOcclusionState(mState))
 		{
-			LLSpatialGroup::OctreeTraveler::traverse(n);
+			OctreeTraveler::traverse(n);
 		}
 	}
 };
@@ -1093,7 +889,7 @@ void LLSpatialGroup::setOcclusionState(U32 state, S32 mode)
 
 				if ((state & DISCARD_QUERY) && mOcclusionQuery[i])
 				{
-					sQueryPool.release(mOcclusionQuery[i]);
+					release_occlusion_query_object_name(mOcclusionQuery[i]);
 					mOcclusionQuery[i] = 0;
 				}
 			}
@@ -1104,19 +900,19 @@ void LLSpatialGroup::setOcclusionState(U32 state, S32 mode)
 		mOcclusionState[LLViewerCamera::sCurCameraID] |= state;
 		if ((state & DISCARD_QUERY) && mOcclusionQuery[LLViewerCamera::sCurCameraID])
 		{
-			sQueryPool.release(mOcclusionQuery[LLViewerCamera::sCurCameraID]);
+			release_occlusion_query_object_name(mOcclusionQuery[LLViewerCamera::sCurCameraID]);
 			mOcclusionQuery[LLViewerCamera::sCurCameraID] = 0;
 		}
 	}
 }
 
-class LLSpatialClearOcclusionState : public LLSpatialGroup::OctreeTraveler
+class LLSpatialClearOcclusionState : public OctreeTraveler
 {
 public:
 	U32 mState;
 	
 	LLSpatialClearOcclusionState(U32 state) : mState(state) { }
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->clearOcclusionState(mState); }
+	virtual void visit(const OctreeNode* branch) { ((LLSpatialGroup*) branch->getListener(0))->clearOcclusionState(mState); }
 };
 
 class LLSpatialClearOcclusionStateDiff : public LLSpatialClearOcclusionState
@@ -1124,13 +920,13 @@ class LLSpatialClearOcclusionStateDiff : public LLSpatialClearOcclusionState
 public:
 	LLSpatialClearOcclusionStateDiff(U32 state) : LLSpatialClearOcclusionState(state) { }
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
+	virtual void traverse(const OctreeNode* n)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
 		
 		if (group->isOcclusionState(mState))
 		{
-			LLSpatialGroup::OctreeTraveler::traverse(n);
+			OctreeTraveler::traverse(n);
 		}
 	}
 };
@@ -1166,13 +962,11 @@ void LLSpatialGroup::clearOcclusionState(U32 state, S32 mode)
 //		Octree Listener Implementation
 //======================================
 
-LLSpatialGroup::LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part) :
+LLSpatialGroup::LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part) : LLviewerOctreeGroup(node),
 	mObjectBoxSize(1.f),
-	mState(0),
 	mGeometryBytes(0),
 	mSurfaceArea(0.f),
 	mBuilt(0.f),
-	mOctreeNode(node),
 	mSpatialPartition(part),
 	mVertexBuffer(NULL), 
 	mBufferUsage(part->mBufferUsage),
@@ -1191,17 +985,11 @@ LLSpatialGroup::LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part) :
 
 	mViewAngle.splat(0.f);
 	mLastUpdateViewAngle.splat(-1.f);
-	mExtents[0] = mExtents[1] = mObjectBounds[0] = mObjectBounds[0] = mObjectBounds[1] = 
-		mObjectExtents[0] = mObjectExtents[1] = mViewAngle;
 
 	sg_assert(mOctreeNode->getListenerCount() == 0);
-	mOctreeNode->addListener(this);
 	setState(SG_INITIAL_STATE_MASK);
 	gPipeline.markRebuild(this, TRUE);
 
-	mBounds[0] = node->getCenter();
-	mBounds[1] = node->getSize();
-
 	part->mLODSeed = (part->mLODSeed+1)%part->mLODPeriod;
 	mLODHash = part->mLODSeed;
 
@@ -1235,7 +1023,7 @@ void LLSpatialGroup::updateDistance(LLCamera &camera)
 	}
 
 #if !LL_RELEASE_FOR_DOWNLOAD
-	if (isState(LLSpatialGroup::OBJECT_DIRTY))
+	if (hasState(LLSpatialGroup::OBJECT_DIRTY))
 	{
 		llerrs << "Spatial group dirty on distance update." << llendl;
 	}
@@ -1266,7 +1054,7 @@ F32 LLSpatialPartition::calcDistance(LLSpatialGroup* group, LLCamera& camera)
 		dist = eye.getLength3().getF32();
 		eye.normalize3fast();
 
-		if (!group->isState(LLSpatialGroup::ALPHA_DIRTY))
+		if (!group->hasState(LLSpatialGroup::ALPHA_DIRTY))
 		{
 			if (!group->mSpatialPartition->isBridge())
 			{
@@ -1343,7 +1131,7 @@ BOOL LLSpatialGroup::needsUpdate()
 
 BOOL LLSpatialGroup::changeLOD()
 {
-	if (isState(ALPHA_DIRTY | OBJECT_DIRTY))
+	if (hasState(ALPHA_DIRTY | OBJECT_DIRTY))
 	{ ///a rebuild is going to happen, update distance and LoD
 		return TRUE;
 	}
@@ -1371,17 +1159,17 @@ BOOL LLSpatialGroup::changeLOD()
 	return FALSE;
 }
 
-void LLSpatialGroup::handleInsertion(const TreeNode* node, LLDrawable* drawablep)
+void LLSpatialGroup::handleInsertion(const TreeNode* node, LLViewerOctreeEntry* entry)
 {
-	addObject(drawablep, FALSE, TRUE);
+	addObject((LLDrawable*)entry->getDrawable());
 	unbound();
 	setState(OBJECT_DIRTY);
 }
 
-void LLSpatialGroup::handleRemoval(const TreeNode* node, LLDrawable* drawable)
+void LLSpatialGroup::handleRemoval(const TreeNode* node, LLViewerOctreeEntry* entry)
 {
-	removeObject(drawable, TRUE);
-	setState(OBJECT_DIRTY);
+	removeObject((LLDrawable*)entry->getDrawable(), TRUE);
+	LLviewerOctreeGroup::handleRemoval(node, entry);
 }
 
 void LLSpatialGroup::handleDestruction(const TreeNode* node)
@@ -1390,10 +1178,17 @@ void LLSpatialGroup::handleDestruction(const TreeNode* node)
 	
 	for (element_iter i = getDataBegin(); i != getDataEnd(); ++i)
 	{
-		LLDrawable* drawable = *i;
-		if (drawable->getSpatialGroup() == this)
+		LLViewerOctreeEntry* entry = *i;
+		if (entry->getGroup() == this)
 		{
-			drawable->setSpatialGroup(NULL);
+			if(entry->hasDrawable())
+			{
+				((LLDrawable*)entry->getDrawable())->setGroup(NULL);
+			}
+			else
+		{
+				llerrs << "No Drawable found in the entry." << llendl;
+			}
 		}
 	}
 	
@@ -1415,16 +1210,6 @@ void LLSpatialGroup::handleDestruction(const TreeNode* node)
 	mOctreeNode = NULL;
 }
 
-void LLSpatialGroup::handleStateChange(const TreeNode* node)
-{
-	//drop bounding box upon state change
-	if (mOctreeNode != node)
-	{
-		mOctreeNode = (OctreeNode*) node;
-	}
-	unbound();
-}
-
 void LLSpatialGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* child) 
 {
 	if (child->getListenerCount() == 0)
@@ -1441,11 +1226,6 @@ void LLSpatialGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* c
 	assert_states_valid(this);
 }
 
-void LLSpatialGroup::handleChildRemoval(const OctreeNode* parent, const OctreeNode* child)
-{
-	unbound();
-}
-
 void LLSpatialGroup::destroyGL(bool keep_occlusion) 
 {
 	setState(LLSpatialGroup::GEOM_DIRTY | LLSpatialGroup::IMAGE_DIRTY);
@@ -1467,7 +1247,7 @@ void LLSpatialGroup::destroyGL(bool keep_occlusion)
 		{
 			if (mOcclusionQuery[i])
 			{
-				sQueryPool.release(mOcclusionQuery[i]);
+				release_occlusion_query_object_name(mOcclusionQuery[i]);
 				mOcclusionQuery[i] = 0;
 			}
 		}
@@ -1476,7 +1256,11 @@ void LLSpatialGroup::destroyGL(bool keep_occlusion)
 
 	for (LLSpatialGroup::element_iter i = getDataBegin(); i != getDataEnd(); ++i)
 	{
-		LLDrawable* drawable = *i;
+		LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+		if(!drawable)
+		{
+			continue;
+		}
 		for (S32 j = 0; j < drawable->getNumFaces(); j++)
 		{
 			LLFace* facep = drawable->getFace(j);
@@ -1488,69 +1272,6 @@ void LLSpatialGroup::destroyGL(bool keep_occlusion)
 	}
 }
 
-BOOL LLSpatialGroup::rebound()
-{
-	if (!isState(DIRTY))
-	{	//return TRUE if we're not empty
-		return TRUE;
-	}
-	
-	if (mOctreeNode->getChildCount() == 1 && mOctreeNode->getElementCount() == 0)
-	{
-		LLSpatialGroup* group = (LLSpatialGroup*) mOctreeNode->getChild(0)->getListener(0);
-		group->rebound();
-		
-		//copy single child's bounding box
-		mBounds[0] = group->mBounds[0];
-		mBounds[1] = group->mBounds[1];
-		mExtents[0] = group->mExtents[0];
-		mExtents[1] = group->mExtents[1];
-		
-		group->setState(SKIP_FRUSTUM_CHECK);
-	}
-	else if (mOctreeNode->isLeaf())
-	{ //copy object bounding box if this is a leaf
-		boundObjects(TRUE, mExtents[0], mExtents[1]);
-		mBounds[0] = mObjectBounds[0];
-		mBounds[1] = mObjectBounds[1];
-	}
-	else
-	{
-		LLVector4a& newMin = mExtents[0];
-		LLVector4a& newMax = mExtents[1];
-		LLSpatialGroup* group = (LLSpatialGroup*) mOctreeNode->getChild(0)->getListener(0);
-		group->clearState(SKIP_FRUSTUM_CHECK);
-		group->rebound();
-		//initialize to first child
-		newMin = group->mExtents[0];
-		newMax = group->mExtents[1];
-
-		//first, rebound children
-		for (U32 i = 1; i < mOctreeNode->getChildCount(); i++)
-		{
-			group = (LLSpatialGroup*) mOctreeNode->getChild(i)->getListener(0);
-			group->clearState(SKIP_FRUSTUM_CHECK);
-			group->rebound();
-			const LLVector4a& max = group->mExtents[1];
-			const LLVector4a& min = group->mExtents[0];
-
-			newMax.setMax(newMax, max);
-			newMin.setMin(newMin, min);
-		}
-
-		boundObjects(FALSE, newMin, newMax);
-		
-		mBounds[0].setAdd(newMin, newMax);
-		mBounds[0].mul(0.5f);
-		mBounds[1].setSub(newMax, newMin);
-		mBounds[1].mul(0.5f);
-	}
-	
-	clearState(DIRTY);
-
-	return TRUE;
-}
-
 static LLFastTimer::DeclareTimer FTM_OCCLUSION_READBACK("Readback Occlusion");
 static LLFastTimer::DeclareTimer FTM_OCCLUSION_WAIT("Occlusion Wait");
 
@@ -1580,7 +1301,7 @@ void LLSpatialGroup::checkOcclusion()
 					LLFastTimer t(FTM_OCCLUSION_WAIT);
 					while (!available && max_loop-- > 0)
 					{
-						F32 max_time = llmin(gFrameIntervalSeconds*10.f, 1.f);
+						F32 max_time = llmin(gFrameIntervalSeconds.value()*10.f, 1.f);
 						//do some usefu work while we wait
 						LLAppViewer::getTextureCache()->update(max_time); // unpauses the texture cache thread
 						LLAppViewer::getImageDecodeThread()->update(max_time); // unpauses the image thread
@@ -1607,7 +1328,7 @@ void LLSpatialGroup::checkOcclusion()
 				}
 				else if (mOcclusionQuery[LLViewerCamera::sCurCameraID])
 				{ //delete the query to avoid holding onto hundreds of pending queries
-					sQueryPool.release(mOcclusionQuery[LLViewerCamera::sCurCameraID]);
+					release_occlusion_query_object_name(mOcclusionQuery[LLViewerCamera::sCurCameraID]);
 					mOcclusionQuery[LLViewerCamera::sCurCameraID] = 0;
 				}
 				
@@ -1679,7 +1400,7 @@ void LLSpatialGroup::doOcclusion(LLCamera* camera)
 					if (!mOcclusionQuery[LLViewerCamera::sCurCameraID])
 					{
 						LLFastTimer t(FTM_OCCLUSION_ALLOCATE);
-						mOcclusionQuery[LLViewerCamera::sCurCameraID] = sQueryPool.allocate();
+						mOcclusionQuery[LLViewerCamera::sCurCameraID] = get_new_occlusion_query_object_name();
 					}
 
 					// Depth clamp all water to avoid it being culled as a result of being
@@ -1769,9 +1490,10 @@ void LLSpatialGroup::doOcclusion(LLCamera* camera)
 
 //==============================================
 
-LLSpatialPartition::LLSpatialPartition(U32 data_mask, BOOL render_by_group, U32 buffer_usage)
+LLSpatialPartition::LLSpatialPartition(U32 data_mask, BOOL render_by_group, U32 buffer_usage, LLViewerRegion* regionp)
 : mRenderByGroup(render_by_group), mBridge(NULL)
 {
+	mRegionp = regionp;
 	mOcclusionEnabled = TRUE;
 	mDrawableType = 0;
 	mPartitionType = LLViewerRegion::PARTITION_NONE;
@@ -1783,23 +1505,14 @@ LLSpatialPartition::LLSpatialPartition(U32 data_mask, BOOL render_by_group, U32
 	mSlopRatio = 0.25f;
 	mInfiniteFarClip = FALSE;
 
-	LLVector4a center, size;
-	center.splat(0.f);
-	size.splat(1.f);
-
-	mOctree = new LLSpatialGroup::OctreeRoot(center,size,
-											NULL);
 	new LLSpatialGroup(mOctree, this);
 }
 
 
 LLSpatialPartition::~LLSpatialPartition()
 {
-	delete mOctree;
-	mOctree = NULL;
 }
 
-
 LLSpatialGroup *LLSpatialPartition::put(LLDrawable *drawablep, BOOL was_visible)
 {
 	drawablep->updateSpatialExtents();
@@ -1807,11 +1520,15 @@ LLSpatialGroup *LLSpatialPartition::put(LLDrawable *drawablep, BOOL was_visible)
 	//keep drawable from being garbage collected
 	LLPointer<LLDrawable> ptr = drawablep;
 		
+	if(!drawablep->getGroup())
+	{
 	assert_octree_valid(mOctree);
-	mOctree->insert(drawablep);
+		mOctree->insert(drawablep->getEntry());
 	assert_octree_valid(mOctree);
+	}	
 	
 	LLSpatialGroup* group = drawablep->getSpatialGroup();
+	llassert(group != NULL);
 
 	if (group && was_visible && group->isOcclusionState(LLSpatialGroup::QUERY_PENDING))
 	{
@@ -1829,11 +1546,9 @@ BOOL LLSpatialPartition::remove(LLDrawable *drawablep, LLSpatialGroup *curp)
 	}
 	else
 	{
-		drawablep->setSpatialGroup(NULL);
+		drawablep->setGroup(NULL);
 	}
 
-	drawablep->setSpatialGroup(NULL);
-
 	assert_octree_valid(mOctree);
 	
 	return TRUE;
@@ -1883,13 +1598,13 @@ void LLSpatialPartition::move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL
 	put(drawablep, was_visible);
 }
 
-class LLSpatialShift : public LLSpatialGroup::OctreeTraveler
+class LLSpatialShift : public OctreeTraveler
 {
 public:
 	const LLVector4a& mOffset;
 
 	LLSpatialShift(const LLVector4a& offset) : mOffset(offset) { }
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) 
+	virtual void visit(const OctreeNode* branch) 
 	{ 
 		((LLSpatialGroup*) branch->getListener(0))->shift(mOffset); 
 	}
@@ -1901,17 +1616,17 @@ void LLSpatialPartition::shift(const LLVector4a &offset)
 	shifter.traverse(mOctree);
 }
 
-class LLOctreeCull : public LLSpatialGroup::OctreeTraveler
+class LLOctreeCull : public LLViewerOctreeCull
 {
 public:
-	LLOctreeCull(LLCamera* camera)
-		: mCamera(camera), mRes(0) { }
+	LLOctreeCull(LLCamera* camera) : LLViewerOctreeCull(camera) {}
 
-	virtual bool earlyFail(LLSpatialGroup* group)
+	virtual bool earlyFail(LLviewerOctreeGroup* base_group)
 	{
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
 		group->checkOcclusion();
 
-		if (group->mOctreeNode->getParent() &&	//never occlusion cull the root node
+		if (group->getOctreeNode()->getParent() &&	//never occlusion cull the root node
 		  	LLPipeline::sUseOcclusion &&			//ignore occlusion if disabled
 			group->isOcclusionState(LLSpatialGroup::OCCLUDED))
 		{
@@ -1922,78 +1637,29 @@ public:
 		return false;
 	}
 	
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
-	{
-		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
-
-		if (earlyFail(group))
-		{
-			return;
-		}
-		
-		if (mRes == 2 || 
-			(mRes && group->isState(LLSpatialGroup::SKIP_FRUSTUM_CHECK)))
-		{	//fully in, just add everything
-			LLSpatialGroup::OctreeTraveler::traverse(n);
-		}
-		else
-		{
-			mRes = frustumCheck(group);
-				
-			if (mRes)
-			{ //at least partially in, run on down
-				LLSpatialGroup::OctreeTraveler::traverse(n);
-			}
-
-			mRes = 0;
-		}
-	}
-	
-	virtual S32 frustumCheck(const LLSpatialGroup* group)
+	virtual S32 frustumCheck(const LLviewerOctreeGroup* group)
 	{
-		S32 res = mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1]);
+		S32 res = AABBInFrustumNoFarClipGroupBounds(group);
 		if (res != 0)
 		{
-			res = llmin(res, AABBSphereIntersect(group->mExtents[0], group->mExtents[1], mCamera->getOrigin(), mCamera->mFrustumCornerDist));
+			res = llmin(res, AABBSphereIntersectGroupExtents(group));
 		}
 		return res;
 	}
 
-	virtual S32 frustumCheckObjects(const LLSpatialGroup* group)
+	virtual S32 frustumCheckObjects(const LLviewerOctreeGroup* group)
 	{
-		S32 res = mCamera->AABBInFrustumNoFarClip(group->mObjectBounds[0], group->mObjectBounds[1]);
+		S32 res = AABBInFrustumNoFarClipObjectBounds(group);
 		if (res != 0)
 		{
-			res = llmin(res, AABBSphereIntersect(group->mObjectExtents[0], group->mObjectExtents[1], mCamera->getOrigin(), mCamera->mFrustumCornerDist));
+			res = llmin(res, AABBSphereIntersectObjectExtents(group));
 		}
 		return res;
 	}
 
-	virtual bool checkObjects(const LLSpatialGroup::OctreeNode* branch, const LLSpatialGroup* group)
-	{
-		if (branch->getElementCount() == 0) //no elements
-		{
-			return false;
-		}
-		else if (branch->getChildCount() == 0) //leaf state, already checked tightest bounding box
-		{
-			return true;
-		}
-		else if (mRes == 1 && !frustumCheckObjects(group)) //no objects in frustum
-		{
-			return false;
-		}
-		
-		return true;
-	}
-
-	virtual void preprocess(LLSpatialGroup* group)
-	{
-		
-	}
-	
-	virtual void processGroup(LLSpatialGroup* group)
+	virtual void processGroup(LLviewerOctreeGroup* base_group)
 	{
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
 		if (group->needsUpdate() ||
 			group->mVisible[LLViewerCamera::sCurCameraID] < LLDrawable::getCurrentFrame() - 1)
 		{
@@ -2001,21 +1667,6 @@ public:
 		}
 		gPipeline.markNotCulled(group, *mCamera);
 	}
-	
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) 
-	{	
-		LLSpatialGroup* group = (LLSpatialGroup*) branch->getListener(0);
-
-		preprocess(group);
-		
-		if (checkObjects(branch, group))
-		{
-			processGroup(group);
-		}
-	}
-
-	LLCamera *mCamera;
-	S32 mRes;
 };
 
 class LLOctreeCullNoFarClip : public LLOctreeCull
@@ -2024,14 +1675,14 @@ public:
 	LLOctreeCullNoFarClip(LLCamera* camera) 
 		: LLOctreeCull(camera) { }
 
-	virtual S32 frustumCheck(const LLSpatialGroup* group)
+	virtual S32 frustumCheck(const LLviewerOctreeGroup* group)
 	{
-		return mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1]);
+		return AABBInFrustumNoFarClipGroupBounds(group);
 	}
 
-	virtual S32 frustumCheckObjects(const LLSpatialGroup* group)
+	virtual S32 frustumCheckObjects(const LLviewerOctreeGroup* group)
 	{
-		S32 res = mCamera->AABBInFrustumNoFarClip(group->mObjectBounds[0], group->mObjectBounds[1]);
+		S32 res = AABBInFrustumNoFarClipObjectBounds(group);
 		return res;
 	}
 };
@@ -2042,14 +1693,14 @@ public:
 	LLOctreeCullShadow(LLCamera* camera)
 		: LLOctreeCull(camera) { }
 
-	virtual S32 frustumCheck(const LLSpatialGroup* group)
+	virtual S32 frustumCheck(const LLviewerOctreeGroup* group)
 	{
-		return mCamera->AABBInFrustum(group->mBounds[0], group->mBounds[1]);
+		return AABBInFrustumGroupBounds(group);
 	}
 
-	virtual S32 frustumCheckObjects(const LLSpatialGroup* group)
+	virtual S32 frustumCheckObjects(const LLviewerOctreeGroup* group)
 	{
-		return mCamera->AABBInFrustum(group->mObjectBounds[0], group->mObjectBounds[1]);
+		return AABBInFrustumObjectBounds(group);
 	}
 };
 
@@ -2059,9 +1710,11 @@ public:
 	LLOctreeCullVisExtents(LLCamera* camera, LLVector4a& min, LLVector4a& max)
 		: LLOctreeCullShadow(camera), mMin(min), mMax(max), mEmpty(TRUE) { }
 
-	virtual bool earlyFail(LLSpatialGroup* group)
+	virtual bool earlyFail(LLviewerOctreeGroup* base_group)
 	{
-		if (group->mOctreeNode->getParent() &&	//never occlusion cull the root node
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
+
+		if (group->getOctreeNode()->getParent() &&	//never occlusion cull the root node
 			LLPipeline::sUseOcclusion &&			//ignore occlusion if disabled
 			group->isOcclusionState(LLSpatialGroup::OCCLUDED))
 		{
@@ -2071,7 +1724,7 @@ public:
 		return false;
 	}
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* n)
+	virtual void traverse(const OctreeNode* n)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) n->getListener(0);
 
@@ -2080,10 +1733,10 @@ public:
 			return;
 		}
 		
-		if ((mRes && group->isState(LLSpatialGroup::SKIP_FRUSTUM_CHECK)) ||
+		if ((mRes && group->hasState(LLSpatialGroup::SKIP_FRUSTUM_CHECK)) ||
 			mRes == 2)
 		{	//don't need to do frustum check
-			LLSpatialGroup::OctreeTraveler::traverse(n);
+			OctreeTraveler::traverse(n);
 		}
 		else
 		{  
@@ -2091,31 +1744,35 @@ public:
 				
 			if (mRes)
 			{ //at least partially in, run on down
-				LLSpatialGroup::OctreeTraveler::traverse(n);
+				OctreeTraveler::traverse(n);
 			}
 
 			mRes = 0;
 		}
 	}
 
-	virtual void processGroup(LLSpatialGroup* group)
+	virtual void processGroup(LLviewerOctreeGroup* base_group)
 	{
-		llassert(!group->isState(LLSpatialGroup::DIRTY) && !group->isEmpty())
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
+		
+		llassert(!group->hasState(LLSpatialGroup::DIRTY) && !group->isEmpty())
 		
 		if (mRes < 2)
 		{
-			if (mCamera->AABBInFrustum(group->mObjectBounds[0], group->mObjectBounds[1]) > 0)
+			if (AABBInFrustumObjectBounds(group) > 0)
 			{
 				mEmpty = FALSE;
-				update_min_max(mMin, mMax, group->mObjectExtents[0]);
-				update_min_max(mMin, mMax, group->mObjectExtents[1]);
+				const LLVector4a* exts = group->getObjectExtents();
+				update_min_max(mMin, mMax, exts[0]);
+				update_min_max(mMin, mMax, exts[1]);
 			}
 		}
 		else
 		{
 			mEmpty = FALSE;
-			update_min_max(mMin, mMax, group->mExtents[0]);
-			update_min_max(mMin, mMax, group->mExtents[1]);
+			const LLVector4a* exts = group->getExtents();
+			update_min_max(mMin, mMax, exts[0]);
+			update_min_max(mMin, mMax, exts[1]);
 		}
 	}
 
@@ -2130,10 +1787,12 @@ public:
 	LLOctreeCullDetectVisible(LLCamera* camera)
 		: LLOctreeCullShadow(camera), mResult(FALSE) { }
 
-	virtual bool earlyFail(LLSpatialGroup* group)
+	virtual bool earlyFail(LLviewerOctreeGroup* base_group)
 	{
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
+
 		if (mResult || //already found a node, don't check any more
-			(group->mOctreeNode->getParent() &&	//never occlusion cull the root node
+			(group->getOctreeNode()->getParent() &&	//never occlusion cull the root node
 			 LLPipeline::sUseOcclusion &&			//ignore occlusion if disabled
 			 group->isOcclusionState(LLSpatialGroup::OCCLUDED)))
 		{
@@ -2143,9 +1802,9 @@ public:
 		return false;
 	}
 
-	virtual void processGroup(LLSpatialGroup* group)
+	virtual void processGroup(LLviewerOctreeGroup* base_group)
 	{
-		if (group->isVisible())
+		if (base_group->isVisible())
 		{
 			mResult = TRUE;
 		}
@@ -2160,17 +1819,21 @@ public:
 	LLOctreeSelect(LLCamera* camera, std::vector<LLDrawable*>* results)
 		: LLOctreeCull(camera), mResults(results) { }
 
-	virtual bool earlyFail(LLSpatialGroup* group) { return false; }
-	virtual void preprocess(LLSpatialGroup* group) { }
+	virtual bool earlyFail(LLviewerOctreeGroup* group) { return false; }
+	virtual void preprocess(LLviewerOctreeGroup* group) { }
 
-	virtual void processGroup(LLSpatialGroup* group)
+	virtual void processGroup(LLviewerOctreeGroup* base_group)
 	{
-		LLSpatialGroup::OctreeNode* branch = group->mOctreeNode;
+		LLSpatialGroup* group = (LLSpatialGroup*)base_group;
+		OctreeNode* branch = group->getOctreeNode();
 
-		for (LLSpatialGroup::OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
+		for (OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
 		{
-			LLDrawable* drawable = *i;
-			
+			LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+			if(!drawable)
+		{
+				continue;
+			}
 			if (!drawable->isDead())
 			{
 				if (drawable->isSpatialBridge())
@@ -2283,17 +1946,21 @@ void drawBoxOutline(const LLVector4a& pos, const LLVector4a& size)
 	drawBoxOutline(reinterpret_cast<const LLVector3&>(pos), reinterpret_cast<const LLVector3&>(size));
 }
 
-class LLOctreeDirty : public LLOctreeTraveler<LLDrawable>
+class LLOctreeDirty : public OctreeTraveler
 {
 public:
-	virtual void visit(const LLOctreeNode<LLDrawable>* state)
+	virtual void visit(const OctreeNode* state)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) state->getListener(0);
 		group->destroyGL();
 
 		for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 		{
-			LLDrawable* drawable = *i;
+			LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+			if(!drawable)
+			{
+				continue;
+			}
 			if (drawable->getVObj().notNull() && !group->mSpatialPartition->mRenderByGroup)
 			{
 				gPipeline.markRebuild(drawable, LLDrawable::REBUILD_ALL, TRUE);
@@ -2365,13 +2032,28 @@ S32 LLSpatialPartition::cull(LLCamera &camera, std::vector<LLDrawable *>* result
 	((LLSpatialGroup*)mOctree->getListener(0))->validate();
 #endif
 
+	LLOctreeSelect selecter(&camera, results);
+	selecter.traverse(mOctree);
 	
-	if (for_select)
+	return 0;
+}
+
+S32 LLSpatialPartition::cull(LLCamera &camera)
+{
+#if LL_OCTREE_PARANOIA_CHECK
+	((LLSpatialGroup*)mOctree->getListener(0))->checkStates();
+#endif
 	{
-		LLOctreeSelect selecter(&camera, results);
-		selecter.traverse(mOctree);
+		LLFastTimer ftm(FTM_CULL_REBOUND);		
+		LLSpatialGroup* group = (LLSpatialGroup*) mOctree->getListener(0);
+		group->rebound();
 	}
-	else if (LLPipeline::sShadowRender)
+
+#if LL_OCTREE_PARANOIA_CHECK
+	((LLSpatialGroup*)mOctree->getListener(0))->validate();
+#endif
+
+	if (LLPipeline::sShadowRender)
 	{
 		LLFastTimer ftm(FTM_FRUSTUM_CULL);
 		LLOctreeCullShadow culler(&camera);
@@ -2404,9 +2086,10 @@ BOOL earlyFail(LLCamera* camera, LLSpatialGroup* group)
 	LLVector4a fudge;
 	fudge.splat(vel);
 
-	const LLVector4a& c = group->mBounds[0];
+	const LLVector4a* bounds = group->getBounds();
+	const LLVector4a& c = bounds[0];
 	LLVector4a r;
-	r.setAdd(group->mBounds[1], fudge);
+	r.setAdd(bounds[1], fudge);
 
 	/*if (r.magVecSquared() > 1024.0*1024.0)
 	{
@@ -2531,7 +2214,8 @@ void pushBufferVerts(LLSpatialGroup* group, U32 mask)
 	}
 	else
 	{
-		drawBox(group->mBounds[0], group->mBounds[1]);
+		const LLVector4a* bounds = group->getBounds();
+		drawBox(bounds[0], bounds[1]);
 	}
 }
 
@@ -2576,7 +2260,7 @@ void renderOctree(LLSpatialGroup* group)
 	LLVector4 col;
 	if (group->mBuilt > 0.f)
 	{
-		group->mBuilt -= 2.f * gFrameIntervalSeconds;
+		group->mBuilt -= 2.f * gFrameIntervalSeconds.value();
 		if (group->mBufferUsage == GL_STATIC_DRAW_ARB)
 		{
 			col.setVec(1.0f, 0, 0, group->mBuilt*0.5f);
@@ -2595,13 +2279,19 @@ void renderOctree(LLSpatialGroup* group)
 			gGL.diffuseColor4f(1,0,0,group->mBuilt);
 			gGL.flush();
 			glLineWidth(5.f);
-			drawBoxOutline(group->mObjectBounds[0], group->mObjectBounds[1]);
+
+			const LLVector4a* bounds = group->getObjectBounds();
+			drawBoxOutline(bounds[0], bounds[1]);
 			gGL.flush();
 			glLineWidth(1.f);
 			gGL.flush();
 			for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 			{
-				LLDrawable* drawable = *i;
+				LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+				if(!drawable)
+				{
+					continue;
+				}
 				if (!group->mSpatialPartition->isBridge())
 				{
 					gGL.pushMatrix();
@@ -2659,9 +2349,10 @@ void renderOctree(LLSpatialGroup* group)
 	gGL.diffuseColor4fv(col.mV);
 	LLVector4a fudge;
 	fudge.splat(0.001f);
-	LLVector4a size = group->mObjectBounds[1];
-	size.mul(1.01f);
-	size.add(fudge);
+
+	//LLVector4a size = group->mObjectBounds[1];
+	//size.mul(1.01f);
+	//size.add(fudge);
 
 	//{
 	//	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
@@ -2677,7 +2368,9 @@ void renderOctree(LLSpatialGroup* group)
 		//drawBoxOutline(group->mObjectBounds[0], group->mObjectBounds[1]);
 
 		gGL.diffuseColor4f(0,1,1,1);
-		drawBoxOutline(group->mBounds[0],group->mBounds[1]);
+
+		const LLVector4a* bounds = group->getBounds();
+		drawBoxOutline(bounds[0], bounds[1]);
 		
 		//draw bounding box for draw info
 		/*if (group->mSpatialPartition->mRenderByGroup)
@@ -3444,9 +3137,13 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 
 void renderPhysicsShapes(LLSpatialGroup* group)
 {
-	for (LLSpatialGroup::OctreeNode::const_element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
+	for (OctreeNode::const_element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 	{
-		LLDrawable* drawable = *i;
+		LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+		if(!drawable)
+	{
+			continue;
+		}
 		LLVOVolume* volume = drawable->getVOVolume();
 		if (volume && !volume->isAttachment() && volume->getPhysicsShapeType() != LLViewerObject::PHYSICS_SHAPE_NONE )
 		{
@@ -4003,17 +3700,18 @@ void renderAgentTarget(LLVOAvatar* avatar)
 	}
 }
 
-class LLOctreeRenderNonOccluded : public LLOctreeTraveler<LLDrawable>
+class LLOctreeRenderNonOccluded : public OctreeTraveler
 {
 public:
 	LLCamera* mCamera;
 	LLOctreeRenderNonOccluded(LLCamera* camera): mCamera(camera) {}
 	
-	virtual void traverse(const LLSpatialGroup::OctreeNode* node)
+	virtual void traverse(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 		
-		if (!mCamera || mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1]))
+		const LLVector4a* bounds = group->getBounds();
+		if (!mCamera || mCamera->AABBInFrustumNoFarClip(bounds[0], bounds[1]))
 		{
 			node->accept(this);
 			stop_glerror();
@@ -4053,17 +3751,17 @@ public:
 		}
 	}
 
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch)
+	virtual void visit(const OctreeNode* branch)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) branch->getListener(0);
-
-		if (group->isState(LLSpatialGroup::GEOM_DIRTY) || (mCamera && !mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1])))
+		const LLVector4a* bounds = group->getBounds();
+		if (group->hasState(LLSpatialGroup::GEOM_DIRTY) || (mCamera && !mCamera->AABBInFrustumNoFarClip(bounds[0], bounds[1])))
 		{
 			return;
 		}
 
-		LLVector4a nodeCenter = group->mBounds[0];
-		LLVector4a octCenter = group->mOctreeNode->getCenter();
+		LLVector4a nodeCenter = bounds[0];
+		LLVector4a octCenter = group->getOctreeNode()->getCenter();
 
 		group->rebuildGeom();
 		group->rebuildMesh();
@@ -4073,14 +3771,19 @@ public:
 			if (!group->isEmpty())
 			{
 				gGL.diffuseColor3f(0,0,1);
-				drawBoxOutline(group->mObjectBounds[0],
-								group->mObjectBounds[1]);
+
+				const LLVector4a* obj_bounds = group->getObjectBounds();
+				drawBoxOutline(obj_bounds[0], obj_bounds[1]);
 			}
 		}
 
-		for (LLSpatialGroup::OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
+		for (OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
+		{
+			LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+			if(!drawable)
 		{
-			LLDrawable* drawable = *i;
+				continue;
+			}
 					
 			if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_BBOXES))
 			{
@@ -4203,17 +3906,18 @@ public:
 };
 
 
-class LLOctreeRenderPhysicsShapes : public LLOctreeTraveler<LLDrawable>
+class LLOctreeRenderPhysicsShapes : public OctreeTraveler
 {
 public:
 	LLCamera* mCamera;
 	LLOctreeRenderPhysicsShapes(LLCamera* camera): mCamera(camera) {}
 	
-	virtual void traverse(const LLSpatialGroup::OctreeNode* node)
+	virtual void traverse(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 		
-		if (!mCamera || mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1]))
+		const LLVector4a* bounds = group->getBounds();
+		if (!mCamera || mCamera->AABBInFrustumNoFarClip(bounds[0], bounds[1]))
 		{
 			node->accept(this);
 			stop_glerror();
@@ -4231,23 +3935,24 @@ public:
 		}
 	}
 
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch)
+	virtual void visit(const OctreeNode* branch)
 	{
 		
 	}
 };
 
-class LLOctreePushBBoxVerts : public LLOctreeTraveler<LLDrawable>
+class LLOctreePushBBoxVerts : public OctreeTraveler
 {
 public:
 	LLCamera* mCamera;
 	LLOctreePushBBoxVerts(LLCamera* camera): mCamera(camera) {}
 	
-	virtual void traverse(const LLSpatialGroup::OctreeNode* node)
+	virtual void traverse(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 		
-		if (!mCamera || mCamera->AABBInFrustum(group->mBounds[0], group->mBounds[1]))
+		const LLVector4a* bounds = group->getBounds();
+		if (!mCamera || mCamera->AABBInFrustum(bounds[0], bounds[1]))
 		{
 			node->accept(this);
 
@@ -4258,19 +3963,23 @@ public:
 		}
 	}
 
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch)
+	virtual void visit(const OctreeNode* branch)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) branch->getListener(0);
 
-		if (group->isState(LLSpatialGroup::GEOM_DIRTY) || (mCamera && !mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1])))
+		const LLVector4a* bounds = group->getBounds();
+		if (group->hasState(LLSpatialGroup::GEOM_DIRTY) || (mCamera && !mCamera->AABBInFrustumNoFarClip(bounds[0], bounds[1])))
 		{
 			return;
 		}
 
-		for (LLSpatialGroup::OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
+		for (OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
 		{
-			LLDrawable* drawable = *i;
-						
+			LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+			if(!drawable)
+		{
+				continue;
+			}
 			renderBoundingBox(drawable, FALSE);			
 		}
 	}
@@ -4282,7 +3991,7 @@ void LLSpatialPartition::renderIntersectingBBoxes(LLCamera* camera)
 	pusher.traverse(mOctree);
 }
 
-class LLOctreeStateCheck : public LLOctreeTraveler<LLDrawable>
+class LLOctreeStateCheck : public OctreeTraveler
 {
 public:
 	U32 mInheritedMask[LLViewerCamera::NUM_CAMERAS];
@@ -4295,7 +4004,7 @@ public:
 		}
 	}
 
-	virtual void traverse(const LLSpatialGroup::OctreeNode* node)
+	virtual void traverse(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 		
@@ -4322,7 +4031,7 @@ public:
 	}
 	
 
-	virtual void visit(const LLOctreeNode<LLDrawable>* state)
+	virtual void visit(const OctreeNode* state)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) state->getListener(0);
 
@@ -4334,7 +4043,7 @@ public:
 			}
 		}
 
-		if (group->isState(LLSpatialGroup::DIRTY))
+		if (group->hasState(LLSpatialGroup::DIRTY))
 		{
 			assert_parent_state(group, LLSpatialGroup::DIRTY);
 		}
@@ -4345,7 +4054,7 @@ public:
 		LLSpatialGroup* parent = group->getParent();
 		while (parent)
 		{
-			if (!parent->isState(state))
+			if (!parent->hasState(state))
 			{
 				llerrs << "Spatial group failed parent state check." << llendl;
 			}
@@ -4460,7 +4169,7 @@ BOOL LLSpatialPartition::isVisible(const LLVector3& v)
 	return TRUE;
 }
 
-class LLOctreeIntersect : public LLSpatialGroup::OctreeTraveler
+class LLOctreeIntersect : public OctreeTraveler
 {
 public:
 	LLVector3 mStart;
@@ -4487,21 +4196,21 @@ public:
 	{
 	}
 	
-	virtual void visit(const LLSpatialGroup::OctreeNode* branch) 
+	virtual void visit(const OctreeNode* branch) 
 	{	
-		for (LLSpatialGroup::OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
+		for (OctreeNode::const_element_iter i = branch->getDataBegin(); i != branch->getDataEnd(); ++i)
 		{
 			check(*i);
 		}
 	}
 
-	virtual LLDrawable* check(const LLSpatialGroup::OctreeNode* node)
+	virtual LLDrawable* check(const OctreeNode* node)
 	{
 		node->accept(this);
 	
 		for (U32 i = 0; i < node->getChildCount(); i++)
 		{
-			const LLSpatialGroup::OctreeNode* child = node->getChild(i);
+			const OctreeNode* child = node->getChild(i);
 			LLVector3 res;
 
 			LLSpatialGroup* group = (LLSpatialGroup*) child->getListener(0);
@@ -4509,8 +4218,9 @@ public:
 			LLVector4a size;
 			LLVector4a center;
 			
-			size = group->mBounds[1];
-			center = group->mBounds[0];
+			const LLVector4a* bounds = group->getBounds();
+			size = bounds[1];
+			center = bounds[0];
 			
 			LLVector3 local_start = mStart;
 			LLVector3 local_end   = mEnd;
@@ -4537,8 +4247,9 @@ public:
 		return mHit;
 	}
 
-	virtual bool check(LLDrawable* drawable)
+	virtual bool check(LLViewerOctreeEntry* entry)
 	{	
+		LLDrawable* drawable = (LLDrawable*)entry->getDrawable();
 		LLVector3 local_start = mStart;
 		LLVector3 local_end = mEnd;
 
@@ -4932,5 +4643,3 @@ void LLCullResult::assertDrawMapsEmpty()
 	}
 }
 
-
-
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index b1706d9d35..b592e73403 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -45,22 +45,21 @@
 #define SG_STATE_INHERIT_MASK (OCCLUDED)
 #define SG_INITIAL_STATE_MASK (DIRTY | GEOM_DIRTY)
 
+class LLViewerOctreePartition;
 class LLSpatialPartition;
 class LLSpatialBridge;
 class LLSpatialGroup;
 class LLTextureAtlas;
 class LLTextureAtlasSlot;
+class LLViewerRegion;
 
-S32 AABBSphereIntersect(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &rad);
-S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &radius_squared);
-
-S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad);
-S32 AABBSphereIntersectR2(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &radius_squared);
 void pushVerts(LLFace* face, U32 mask);
 
 // get index buffer for binary encoded axis vertex buffer given a box at center being viewed by given camera
 U32 get_box_fan_indices(LLCamera* camera, const LLVector4a& center);
 U8* get_box_fan_indices_ptr(LLCamera* camera, const LLVector4a& center);
+GLuint get_new_occlusion_query_object_name();
+void release_occlusion_query_object_name(GLuint name);
 
 class LLDrawInfo : public LLRefCount 
 {
@@ -192,13 +191,13 @@ public:
 };
 
 LL_ALIGN_PREFIX(16)
-class LLSpatialGroup : public LLOctreeListener<LLDrawable>
+class LLSpatialGroup : public LLviewerOctreeGroup
 {
 	friend class LLSpatialPartition;
 	friend class LLOctreeStateCheck;
 public:
 
-	LLSpatialGroup(const LLSpatialGroup& rhs)
+	LLSpatialGroup(const LLSpatialGroup& rhs) : LLviewerOctreeGroup(rhs)
 	{
 		*this = rhs;
 	}
@@ -231,15 +230,6 @@ public:
 	typedef std::map<LLFace*, buffer_list_t> buffer_texture_map_t;
 	typedef std::map<U32, buffer_texture_map_t> buffer_map_t;
 
-	typedef LLOctreeListener<LLDrawable>	BaseType;
-	typedef LLOctreeListener<LLDrawable>	OctreeListener;
-	typedef LLTreeNode<LLDrawable>			TreeNode;
-	typedef LLOctreeNode<LLDrawable>		OctreeNode;
-	typedef LLOctreeRoot<LLDrawable>		OctreeRoot;
-	typedef LLOctreeTraveler<LLDrawable>	OctreeTraveler;
-	typedef LLOctreeNode<LLDrawable>::element_iter element_iter;
-	typedef LLOctreeNode<LLDrawable>::element_list element_list;
-
 	struct CompareDistanceGreater
 	{
 		bool operator()(const LLSpatialGroup* const& lhs, const LLSpatialGroup* const& rhs)
@@ -275,18 +265,15 @@ public:
 
 	typedef enum
 	{
-		DEAD					= 0x00000001,
-		DIRTY					= 0x00000002,
-		OBJECT_DIRTY			= 0x00000004,
-		GEOM_DIRTY				= 0x00000008,
-		ALPHA_DIRTY				= 0x00000010,
-		SKIP_FRUSTUM_CHECK		= 0x00000020,
-		IN_IMAGE_QUEUE			= 0x00000040,
-		IMAGE_DIRTY				= 0x00000080,
-		MESH_DIRTY				= 0x00000100,
-		NEW_DRAWINFO			= 0x00000200,
-		IN_BUILD_Q1				= 0x00000400,
-		IN_BUILD_Q2				= 0x00000800,
+		DEAD					= LLviewerOctreeGroup::INVALID_STATE,
+		GEOM_DIRTY				= (DEAD << 1),
+		ALPHA_DIRTY				= (GEOM_DIRTY << 1),
+		IN_IMAGE_QUEUE			= (ALPHA_DIRTY << 1),
+		IMAGE_DIRTY				= (IN_IMAGE_QUEUE << 1),
+		MESH_DIRTY				= (IMAGE_DIRTY << 1),
+		NEW_DRAWINFO			= (MESH_DIRTY << 1),
+		IN_BUILD_Q1				= (NEW_DRAWINFO << 1),
+		IN_BUILD_Q2				= (IN_BUILD_Q1 << 1),
 		STATE_MASK				= 0x0000FFFF,
 	} eSpatialState;
 
@@ -301,12 +288,8 @@ public:
 	LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part);
 
 	BOOL isHUDGroup() ;
-	BOOL isDead()							{ return isState(DEAD); }
-	BOOL isState(U32 state) const;	
+	BOOL isDead()							{ return hasState(DEAD); }
 	BOOL isOcclusionState(U32 state) const	{ return mOcclusionState[LLViewerCamera::sCurCameraID] & state ? TRUE : FALSE; }
-	U32 getState()							{ return mState; }
-	void setState(U32 state);	
-	void clearState(U32 state);	
 	
 	void clearDrawMap();
 	void validate();
@@ -315,23 +298,18 @@ public:
 	
 	void setState(U32 state, S32 mode);
 	void clearState(U32 state, S32 mode);
+	void clearState(U32 state)     {mState &= ~state;}	
 
 	void setOcclusionState(U32 state, S32 mode = STATE_MODE_SINGLE);
 	void clearOcclusionState(U32 state, S32 mode = STATE_MODE_SINGLE);
 
 	LLSpatialGroup* getParent();
 
-	
-	BOOL addObject(LLDrawable *drawablep, BOOL add_all = FALSE, BOOL from_octree = FALSE);
+	BOOL addObject(LLDrawable *drawablep);
 	BOOL removeObject(LLDrawable *drawablep, BOOL from_octree = FALSE);
 	BOOL updateInGroup(LLDrawable *drawablep, BOOL immediate = FALSE); // Update position if it's in the group
-	BOOL isVisible() const;
 	BOOL isRecentlyVisible() const;
-	void setVisible();
 	void shift(const LLVector4a &offset);
-	BOOL boundObjects(BOOL empty, LLVector4a& newMin, LLVector4a& newMax);
-	void unbound();
-	BOOL rebound();
 	void checkOcclusion(); //read back last occlusion query (if any)
 	void doOcclusion(LLCamera* camera); //issue occlusion query
 	void destroyGL(bool keep_occlusion = false);
@@ -343,27 +321,17 @@ public:
 	void rebuildGeom();
 	void rebuildMesh();
 
+	void setState(U32 state)       {mState |= state;}
 	void dirtyGeom() { setState(GEOM_DIRTY); }
 	void dirtyMesh() { setState(MESH_DIRTY); }
 
-	//octree wrappers to make code more readable
-	element_list& getData() { return mOctreeNode->getData(); }
-	element_iter getDataBegin() { return mOctreeNode->getDataBegin(); }
-	element_iter getDataEnd() { return mOctreeNode->getDataEnd(); }
-	bool hasElement(LLDrawable* drawablep) { return std::find(mOctreeNode->getDataBegin(), mOctreeNode->getDataEnd(), drawablep) != mOctreeNode->getDataEnd(); }
-
-	U32 getElementCount() const { return mOctreeNode->getElementCount(); }
-	bool isEmpty() const { return mOctreeNode->isEmpty(); }
-
 	void drawObjectBox(LLColor4 col);
 
 	 //LISTENER FUNCTIONS
-	virtual void handleInsertion(const TreeNode* node, LLDrawable* face);
-	virtual void handleRemoval(const TreeNode* node, LLDrawable* face);
+	virtual void handleInsertion(const TreeNode* node, LLViewerOctreeEntry* face);
+	virtual void handleRemoval(const TreeNode* node, LLViewerOctreeEntry* face);
 	virtual void handleDestruction(const TreeNode* node);
-	virtual void handleStateChange(const TreeNode* node);
 	virtual void handleChildAddition(const OctreeNode* parent, OctreeNode* child);
-	virtual void handleChildRemoval(const OctreeNode* parent, const OctreeNode* child);
 
 //-------------------
 //for atlas use
@@ -386,21 +354,6 @@ public:
 
 public:
 
-	typedef enum
-	{
-		BOUNDS = 0,
-		EXTENTS = 2,
-		OBJECT_BOUNDS = 4,
-		OBJECT_EXTENTS = 6,
-		VIEW_ANGLE = 8,
-		LAST_VIEW_ANGLE = 9,
-		V4_COUNT = 10
-	} eV4Index;
-
-	LL_ALIGN_16(LLVector4a mBounds[2]); // bounding box (center, size) of this node and all its children (tight fit to objects)
-	LL_ALIGN_16(LLVector4a mExtents[2]); // extents (min, max) of this node and all its children
-	LL_ALIGN_16(LLVector4a mObjectExtents[2]); // extents (min, max) of objects in this node
-	LL_ALIGN_16(LLVector4a mObjectBounds[2]); // bounding box (center, size) of objects in this node
 	LL_ALIGN_16(LLVector4a mViewAngle);
 	LL_ALIGN_16(LLVector4a mLastUpdateViewAngle);
 
@@ -421,7 +374,6 @@ private:
 protected:
 	virtual ~LLSpatialGroup();
 
-	U32 mState;
 	U32 mOcclusionState[LLViewerCamera::NUM_CAMERAS];
 	U32 mOcclusionIssued[LLViewerCamera::NUM_CAMERAS];
 
@@ -436,7 +388,6 @@ public:
 	F32 mSurfaceArea; //used by volumes to track estimated surface area of geometry in this node
 
 	F32 mBuilt;
-	OctreeNode* mOctreeNode;
 	LLSpatialPartition* mSpatialPartition;
 	
 	LLPointer<LLVertexBuffer> mVertexBuffer;
@@ -445,7 +396,6 @@ public:
 	U32 mBufferUsage;
 	draw_map_t mDrawMap;
 	
-	S32 mVisible[LLViewerCamera::NUM_CAMERAS];
 	F32 mDistance;
 	F32 mDepth;
 	F32 mLastUpdateDistance;
@@ -468,10 +418,10 @@ public:
 	virtual LLVertexBuffer* createVertexBuffer(U32 type_mask, U32 usage);
 };
 
-class LLSpatialPartition: public LLGeometryManager
+class LLSpatialPartition: public LLViewerOctreePartition, public LLGeometryManager
 {
 public:
-	LLSpatialPartition(U32 data_mask,  BOOL render_by_group, U32 mBufferUsage);
+	LLSpatialPartition(U32 data_mask,  BOOL render_by_group, U32 mBufferUsage, LLViewerRegion* regionp);
 	virtual ~LLSpatialPartition();
 
 	LLSpatialGroup *put(LLDrawable *drawablep, BOOL was_visible = FALSE);
@@ -498,7 +448,8 @@ public:
 	virtual void rebuildMesh(LLSpatialGroup* group);
 
 	BOOL visibleObjectsInFrustum(LLCamera& camera);
-	S32 cull(LLCamera &camera, std::vector<LLDrawable *>* results = NULL, BOOL for_select = FALSE); // Cull on arbitrary frustum
+	/*virtual*/ S32 cull(LLCamera &camera); // Cull on arbitrary frustum
+	S32 cull(LLCamera &camera, std::vector<LLDrawable *>* results, BOOL for_select); // Cull on arbitrary frustum
 	
 	BOOL isVisible(const LLVector3& v);
 	bool isHUDPartition() ;
@@ -515,21 +466,19 @@ public:
 	BOOL getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax);
 
 public:
-	LLSpatialGroup::OctreeNode* mOctree;
 	LLSpatialBridge* mBridge; // NULL for non-LLSpatialBridge instances, otherwise, mBridge == this
 							// use a pointer instead of making "isBridge" and "asBridge" virtual so it's safe
 							// to call asBridge() from the destructor
 	BOOL mOcclusionEnabled; // if TRUE, occlusion culling is performed
 	BOOL mInfiniteFarClip; // if TRUE, frustum culling ignores far clip plane
 	U32 mBufferUsage;
+	U32   mDrawableType;
 	const BOOL mRenderByGroup;
 	U32 mLODSeed;
 	U32 mLODPeriod;	//number of frames between LOD updates for a given spatial group (staggered by mLODSeed)
 	U32 mVertexDataMask;
 	F32 mSlopRatio; //percentage distance must change before drawables receive LOD update (default is 0.25);
 	BOOL mDepthMask; //if TRUE, objects in this partition will be written to depth during alpha rendering
-	U32 mDrawableType;
-	U32 mPartitionType;
 };
 
 // class for creating bridges between spatial partitions
@@ -541,7 +490,7 @@ protected:
 public:
 	typedef std::vector<LLPointer<LLSpatialBridge> > bridge_vector_t;
 	
-	LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask);
+	LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask, LLViewerRegion* regionp);
 	
 	void destroyTree();
 
@@ -663,7 +612,7 @@ private:
 class LLWaterPartition : public LLSpatialPartition
 {
 public:
-	LLWaterPartition();
+	LLWaterPartition(LLViewerRegion* regionp);
 	virtual void getGeometry(LLSpatialGroup* group) {  }
 	virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { }
 };
@@ -672,14 +621,14 @@ public:
 class LLVoidWaterPartition : public LLWaterPartition
 {
 public:
-	LLVoidWaterPartition();
+	LLVoidWaterPartition(LLViewerRegion* regionp);
 };
 
 //spatial partition for terrain (impelmented in LLVOSurfacePatch.cpp)
 class LLTerrainPartition : public LLSpatialPartition
 {
 public:
-	LLTerrainPartition();
+	LLTerrainPartition(LLViewerRegion* regionp);
 	virtual void getGeometry(LLSpatialGroup* group);
 	virtual LLVertexBuffer* createVertexBuffer(U32 type_mask, U32 usage);
 };
@@ -688,7 +637,7 @@ public:
 class LLTreePartition : public LLSpatialPartition
 {
 public:
-	LLTreePartition();
+	LLTreePartition(LLViewerRegion* regionp);
 	virtual void getGeometry(LLSpatialGroup* group) { }
 	virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { }
 
@@ -698,7 +647,7 @@ public:
 class LLParticlePartition : public LLSpatialPartition
 {
 public:
-	LLParticlePartition();
+	LLParticlePartition(LLViewerRegion* regionp);
 	virtual void rebuildGeom(LLSpatialGroup* group);
 	virtual void getGeometry(LLSpatialGroup* group);
 	virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count);
@@ -710,14 +659,14 @@ protected:
 class LLHUDParticlePartition : public LLParticlePartition
 {
 public:
-	LLHUDParticlePartition();
+	LLHUDParticlePartition(LLViewerRegion* regionp);
 };
 
 //spatial partition for grass (implemented in LLVOGrass.cpp)
 class LLGrassPartition : public LLSpatialPartition
 {
 public:
-	LLGrassPartition();
+	LLGrassPartition(LLViewerRegion* regionp);
 	virtual void getGeometry(LLSpatialGroup* group);
 	virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count);
 protected:
@@ -747,7 +696,7 @@ class LLVolumeGeometryManager: public LLGeometryManager
 class LLVolumePartition : public LLSpatialPartition, public LLVolumeGeometryManager
 {
 public:
-	LLVolumePartition();
+	LLVolumePartition(LLViewerRegion* regionp);
 	virtual void rebuildGeom(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildGeom(group); }
 	virtual void getGeometry(LLSpatialGroup* group) { LLVolumeGeometryManager::getGeometry(group); }
 	virtual void rebuildMesh(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildMesh(group); }
@@ -758,7 +707,7 @@ public:
 class LLVolumeBridge : public LLSpatialBridge, public LLVolumeGeometryManager
 {
 public:
-	LLVolumeBridge(LLDrawable* drawable);
+	LLVolumeBridge(LLDrawable* drawable, LLViewerRegion* regionp);
 	virtual void rebuildGeom(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildGeom(group); }
 	virtual void getGeometry(LLSpatialGroup* group) { LLVolumeGeometryManager::getGeometry(group); }
 	virtual void rebuildMesh(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildMesh(group); }
@@ -768,7 +717,7 @@ public:
 class LLHUDBridge : public LLVolumeBridge
 {
 public:
-	LLHUDBridge(LLDrawable* drawablep);
+	LLHUDBridge(LLDrawable* drawablep, LLViewerRegion* regionp);
 	virtual void shiftPos(const LLVector4a& vec);
 	virtual F32 calcPixelArea(LLSpatialGroup* group, LLCamera& camera);
 };
@@ -777,7 +726,7 @@ public:
 class LLBridgePartition : public LLSpatialPartition
 {
 public:
-	LLBridgePartition();
+	LLBridgePartition(LLViewerRegion* regionp);
 	virtual void getGeometry(LLSpatialGroup* group) { }
 	virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) {  }
 };
@@ -785,7 +734,7 @@ public:
 class LLHUDPartition : public LLBridgePartition
 {
 public:
-	LLHUDPartition();
+	LLHUDPartition(LLViewerRegion* regionp);
 	virtual void shift(const LLVector4a &offset);
 };
 
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 0e3007724b..cf2b491d6c 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -1947,7 +1947,7 @@ bool idle_startup()
 			llinfos << "gAgentStartLocation : " << gAgentStartLocation << llendl;
 			LLSLURL start_slurl = LLStartUp::getStartSLURL();
 			LL_DEBUGS("AppInit") << "start slurl "<<start_slurl.asString()<<LL_ENDL;
-			
+
 			if (((start_slurl.getType() == LLSLURL::LOCATION) && (gAgentStartLocation == "url")) ||
 				((start_slurl.getType() == LLSLURL::LAST_LOCATION) && (gAgentStartLocation == "last")) ||
 				((start_slurl.getType() == LLSLURL::HOME_LOCATION) && (gAgentStartLocation == "home")))
@@ -2071,7 +2071,7 @@ bool idle_startup()
 		if (wearables_time > MAX_WEARABLES_TIME)
 		{
 			LLNotificationsUtil::add("ClothingLoading");
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_WEARABLES_TOO_LONG);
+			add(LLStatViewer::LOADING_WEARABLES_LONG_DELAY, 1);
 			LLStartUp::setStartupState( STATE_CLEANUP );
 			return TRUE;
 		}
@@ -2183,9 +2183,6 @@ bool idle_startup()
 
 		LLAppViewer::instance()->handleLoginComplete();
 
-		// reset timers now that we are running "logged in" logic
-		LLFastTimer::reset();
-
 		LLAgentPicksInfo::getInstance()->requestNumberOfPicks();
 
 		LLIMFloater::initIMFloater();
@@ -2294,7 +2291,7 @@ bool login_alert_status(const LLSD& notification, const LLSD& response)
       //      break;
         case 2:     // Teleport
             // Restart the login process, starting at our home locaton
-	  LLStartUp::setStartSLURL(LLSLURL(LLSLURL::SIM_LOCATION_HOME));
+			LLStartUp::setStartSLURL(LLSLURL(LLSLURL::SIM_LOCATION_HOME));
             LLStartUp::setStartupState( STATE_LOGIN_CLEANUP );
             break;
         default:
diff --git a/indra/newview/llstatusbar.cpp b/indra/newview/llstatusbar.cpp
index ff69c6e9fd..b945ec2318 100644
--- a/indra/newview/llstatusbar.cpp
+++ b/indra/newview/llstatusbar.cpp
@@ -37,7 +37,6 @@
 #include "llviewercontrol.h"
 #include "llfloaterbuycurrency.h"
 #include "llbuycurrencyhtml.h"
-#include "llfloaterlagmeter.h"
 #include "llpanelnearbymedia.h"
 #include "llpanelvolumepulldown.h"
 #include "llfloaterregioninfo.h"
@@ -199,10 +198,10 @@ BOOL LLStatusBar::postBuild()
 	sgp.rect(r);
 	sgp.follows.flags(FOLLOWS_BOTTOM | FOLLOWS_RIGHT);
 	sgp.mouse_opaque(false);
+	sgp.stat.count_stat_float(&LLStatViewer::KBIT);
+	sgp.units("Kbps");
+	sgp.precision(0);
 	mSGBandwidth = LLUICtrlFactory::create<LLStatGraph>(sgp);
-	mSGBandwidth->setStat(&LLViewerStats::getInstance()->mKBitStat);
-	mSGBandwidth->setUnits("Kbps");
-	mSGBandwidth->setPrecision(0);
 	addChild(mSGBandwidth);
 	x -= SIM_STAT_WIDTH + 2;
 
@@ -213,17 +212,20 @@ BOOL LLStatusBar::postBuild()
 	pgp.rect(r);
 	pgp.follows.flags(FOLLOWS_BOTTOM | FOLLOWS_RIGHT);
 	pgp.mouse_opaque(false);
+	pgp.stat.measurement_stat_float(&LLStatViewer::PACKETS_LOST_PERCENT);
+	pgp.units("%");
+	pgp.min(0.f);
+	pgp.max(5.f);
+	pgp.precision(1);
+	pgp.per_sec(false);
+	LLStatGraph::Thresholds thresholds;
+	thresholds.threshold.add(LLStatGraph::ThresholdParams().value(0.1).color(LLColor4::green))
+						.add(LLStatGraph::ThresholdParams().value(0.25f).color(LLColor4::yellow))
+						.add(LLStatGraph::ThresholdParams().value(0.6f).color(LLColor4::red));
+
+	pgp.thresholds(thresholds);
 
 	mSGPacketLoss = LLUICtrlFactory::create<LLStatGraph>(pgp);
-	mSGPacketLoss->setStat(&LLViewerStats::getInstance()->mPacketsLostPercentStat);
-	mSGPacketLoss->setUnits("%");
-	mSGPacketLoss->setMin(0.f);
-	mSGPacketLoss->setMax(5.f);
-	mSGPacketLoss->setThreshold(0, 0.5f);
-	mSGPacketLoss->setThreshold(1, 1.f);
-	mSGPacketLoss->setThreshold(2, 3.f);
-	mSGPacketLoss->setPrecision(1);
-	mSGPacketLoss->mPerSec = FALSE;
 	addChild(mSGPacketLoss);
 
 	mPanelVolumePulldown = new LLPanelVolumePulldown();
@@ -253,9 +255,9 @@ void LLStatusBar::refresh()
 		F32 bwtotal = gViewerThrottle.getMaxBandwidth() / 1000.f;
 		mSGBandwidth->setMin(0.f);
 		mSGBandwidth->setMax(bwtotal*1.25f);
-		mSGBandwidth->setThreshold(0, bwtotal*0.75f);
-		mSGBandwidth->setThreshold(1, bwtotal);
-		mSGBandwidth->setThreshold(2, bwtotal);
+		//mSGBandwidth->setThreshold(0, bwtotal*0.75f);
+		//mSGBandwidth->setThreshold(1, bwtotal);
+		//mSGBandwidth->setThreshold(2, bwtotal);
 	}
 	
 	// update clock every 10 seconds
diff --git a/indra/newview/llsurface.h b/indra/newview/llsurface.h
index 9d24bf8771..33a64ae7d5 100644
--- a/indra/newview/llsurface.h
+++ b/indra/newview/llsurface.h
@@ -45,7 +45,6 @@
 class LLTimer;
 class LLUUID;
 class LLAgent;
-class LLStat;
 
 static const U8 NO_EDGE    = 0x00;
 static const U8 EAST_EDGE  = 0x01;
diff --git a/indra/newview/lltexlayer.cpp b/indra/newview/lltexlayer.cpp
index ad09af6594..d6cd881894 100644
--- a/indra/newview/lltexlayer.cpp
+++ b/indra/newview/lltexlayer.cpp
@@ -460,7 +460,7 @@ BOOL LLTexLayerSetBuffer::requestUpdateImmediate()
 void LLTexLayerSetBuffer::doUpload()
 {
 	llinfos << "Uploading baked " << mTexLayerSet->getBodyRegionName() << llendl;
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_TEX_BAKES);
+	add(LLStatViewer::TEX_BAKES, 1);
 
 	// Don't need caches since we're baked now.  (note: we won't *really* be baked 
 	// until this image is sent to the server and the Avatar Appearance message is received.)
diff --git a/indra/newview/lltexturectrl.cpp b/indra/newview/lltexturectrl.cpp
index ec36cf48c2..e227722b29 100644
--- a/indra/newview/lltexturectrl.cpp
+++ b/indra/newview/lltexturectrl.cpp
@@ -549,11 +549,11 @@ void LLFloaterTexturePicker::draw()
 
 	if (gFocusMgr.childHasMouseCapture(getDragHandle()))
 	{
-		mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
+		mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
 	}
 	else
 	{
-		mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
+		mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
 	}
 
 	updateImageStats();
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index 41bfbae86e..8bf7bcc398 100755
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -53,6 +53,7 @@
 #include "llviewerstatsrecorder.h"
 #include "llviewerassetstats.h"
 #include "llworld.h"
+#include "llsdparam.h"
 #include "llsdutil.h"
 #include "llstartup.h"
 #include "llsdserialize.h"
@@ -64,8 +65,8 @@
 #include "bufferstream.h"
 
 bool LLTextureFetchDebugger::sDebuggerEnabled = false ;
-LLStat LLTextureFetch::sCacheHitRate("texture_cache_hits", 128);
-LLStat LLTextureFetch::sCacheReadLatency("texture_cache_read_latency", 128);
+LLTrace::MeasurementStatHandle<> LLTextureFetch::sCacheHitRate("texture_cache_hits");
+LLTrace::MeasurementStatHandle<> LLTextureFetch::sCacheReadLatency("texture_cache_read_latency");
 
 
 //////////////////////////////////////////////////////////////////////////////
@@ -1236,7 +1237,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			LL_DEBUGS("Texture") << mID << ": Cached. Bytes: " << mFormattedImage->getDataSize()
 								 << " Size: " << llformat("%dx%d",mFormattedImage->getWidth(),mFormattedImage->getHeight())
 								 << " Desired Discard: " << mDesiredDiscard << " Desired Size: " << mDesiredSize << LL_ENDL;
-			LLTextureFetch::sCacheHitRate.addValue(100.f);
+			sample(LLTextureFetch::sCacheHitRate, 100.f);
 		}
 		else
 		{
@@ -1253,7 +1254,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			}
 			
 			// fall through
-			LLTextureFetch::sCacheHitRate.addValue(0.f);
+			sample(LLTextureFetch::sCacheHitRate, 0.f);
 		}
 	}
 
@@ -2281,7 +2282,7 @@ void LLTextureFetchWorker::recordTextureStart(bool is_http)
 	{
 		mMetricsStartTime = LLViewerAssetStatsFF::get_timestamp();
 	}
-	LLViewerAssetStatsFF::record_enqueue_thread1(LLViewerAssetType::AT_TEXTURE,
+	LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE,
 												 is_http,
 												 LLImageBase::TYPE_AVATAR_BAKE == mType);
 }
@@ -2292,13 +2293,13 @@ void LLTextureFetchWorker::recordTextureDone(bool is_http)
 {
 	if (mMetricsStartTime)
 	{
-		LLViewerAssetStatsFF::record_response_thread1(LLViewerAssetType::AT_TEXTURE,
+		LLViewerAssetStatsFF::record_response(LLViewerAssetType::AT_TEXTURE,
 													  is_http,
 													  LLImageBase::TYPE_AVATAR_BAKE == mType,
 													  LLViewerAssetStatsFF::get_timestamp() - mMetricsStartTime);
 		mMetricsStartTime = 0;
 	}
-	LLViewerAssetStatsFF::record_dequeue_thread1(LLViewerAssetType::AT_TEXTURE,
+	LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE,
 												 is_http,
 												 LLImageBase::TYPE_AVATAR_BAKE == mType);
 }
@@ -2359,6 +2360,10 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	mHttpMetricsHeaders = new LLCore::HttpHeaders;
 	mHttpMetricsHeaders->mHeaders.push_back("Content-Type: application/llsd+xml");
 	mHttpPolicyClass = LLAppViewer::instance()->getAppCoreHttp().getPolicyDefault();
+
+	//reset the texture timer.
+	gTextureTimer.reset();
+	gTextureTimer.pause();
 }
 
 LLTextureFetch::~LLTextureFetch()
@@ -2703,7 +2708,7 @@ bool LLTextureFetch::getRequestFinished(const LLUUID& id, S32& discard_level,
 			F32 cache_read_time = worker->mCacheReadTime;
 			if (cache_read_time != 0.f)
 			{
-				sCacheReadLatency.addValue(cache_read_time * 1000.f);
+				sample(sCacheReadLatency, cache_read_time * 1000.f);
 			}
 			res = true;
 			LL_DEBUGS("Texture") << id << ": Request Finished. State: " << worker->mState << " Discard: " << discard_level << LL_ENDL;
@@ -2829,7 +2834,7 @@ S32 LLTextureFetch::update(F32 max_time_ms)
 		mNetworkQueueMutex.lock();										// +Mfnq
 		mMaxBandwidth = band_width;
 
-		gTextureList.sTextureBits += mHTTPTextureBits;
+		add(LLStatViewer::TEXTURE_KBIT, mHTTPTextureBits);
 		mHTTPTextureBits = 0;
 
 		mNetworkQueueMutex.unlock();									// -Mfnq
@@ -3258,7 +3263,7 @@ bool LLTextureFetch::receiveImagePacket(const LLHost& host, const LLUUID& id, U1
 		mNetworkQueueMutex.unlock();									// -Mfnq
 		return false;
 	}
-	
+
 	LLViewerStatsRecorder::instance().textureFetch(data_size);
 	LLViewerStatsRecorder::instance().log(0.1f);
 
@@ -3711,7 +3716,7 @@ AssetReportHandler stats_handler;
 bool
 TFReqSetRegion::doWork(LLTextureFetch *)
 {
-	LLViewerAssetStatsFF::set_region_thread1(mRegionHandle);
+	LLViewerAssetStatsFF::set_region(mRegionHandle);
 
 	return true;
 }
@@ -3736,8 +3741,8 @@ TFReqSendMetrics::doWork(LLTextureFetch * fetcher)
 	static const U32 report_priority(1);
 	static LLCore::HttpHandler * const handler(fetcher->isQAMode() || true ? &stats_handler : NULL);
 	
-	if (! gViewerAssetStatsThread1)
-		return true;
+	//if (! gViewerAssetStatsThread1)
+	//	return true;
 
 	static volatile bool reporting_started(false);
 	static volatile S32 report_sequence(0);
@@ -3747,17 +3752,21 @@ TFReqSendMetrics::doWork(LLTextureFetch * fetcher)
 	// but leave it in 'this'.  Destructor will rid us of it.
 	LLViewerAssetStats & main_stats = *mMainStats;
 
-	// Merge existing stats into those from main, convert to LLSD
-	main_stats.merge(*gViewerAssetStatsThread1);
-	LLSD merged_llsd = main_stats.asLLSD(true);
-
-	// Add some additional meta fields to the content
-	merged_llsd["session_id"] = mSessionID;
-	merged_llsd["agent_id"] = mAgentID;
-	merged_llsd["message"] = "ViewerAssetMetrics";					// Identifies the type of metrics
-	merged_llsd["sequence"] = report_sequence;						// Sequence number
-	merged_llsd["initial"] = ! reporting_started;					// Initial data from viewer
-	merged_llsd["break"] = LLTextureFetch::svMetricsDataBreak;		// Break in data prior to this report
+	LLViewerAssetStats::AssetStats stats;
+	main_stats.getStats(stats, true);
+	//LLSD merged_llsd = main_stats.asLLSD();
+
+	bool initial_report = !reporting_started;
+	stats.session_id = mSessionID;
+	stats.agent_id = mAgentID;
+	stats.message = "ViewerAssetMetrics";
+	stats.sequence = static_cast<bool>(report_sequence);
+	stats.initial = initial_report;
+	stats.break_ = static_cast<bool>(LLTextureFetch::svMetricsDataBreak);
+
+	LLSD sd;
+	LLParamSDParser parser;
+	parser.writeSD(sd, stats);
 		
 	// Update sequence number
 	if (S32_MAX == ++report_sequence)
@@ -3765,13 +3774,14 @@ TFReqSendMetrics::doWork(LLTextureFetch * fetcher)
 	reporting_started = true;
 	
 	// Limit the size of the stats report if necessary.
-	merged_llsd["truncated"] = truncate_viewer_metrics(10, merged_llsd);
+	
+	sd["truncated"] = truncate_viewer_metrics(10, sd);
 
 	if (! mCapsURL.empty())
 	{
 		LLCore::BufferArray * ba = new LLCore::BufferArray;
 		LLCore::BufferArrayStream bas(ba);
-		LLSDSerialize::toXML(merged_llsd, bas);
+		LLSDSerialize::toXML(sd, bas);
 		
 		fetcher->getHttpRequest().requestPost(fetcher->getPolicyClass(),
 											  report_priority,
@@ -3791,11 +3801,9 @@ TFReqSendMetrics::doWork(LLTextureFetch * fetcher)
 	// In QA mode, Metrics submode, log the result for ease of testing
 	if (fetcher->isQAMode())
 	{
-		LL_INFOS("Textures") << ll_pretty_print_sd(merged_llsd) << LL_ENDL;
+		LL_INFOS("Textures") << ll_pretty_print_sd(sd) << LL_ENDL;
 	}
 
-	gViewerAssetStatsThread1->reset();
-
 	return true;
 }
 
diff --git a/indra/newview/lltexturefetch.h b/indra/newview/lltexturefetch.h
index 1e58ba35d4..4dcb9dd4b8 100644
--- a/indra/newview/lltexturefetch.h
+++ b/indra/newview/lltexturefetch.h
@@ -37,13 +37,12 @@
 #include "lltextureinfo.h"
 #include "llapr.h"
 #include "llimageworker.h"
-#include "llstat.h"
 #include "llcurl.h"
-#include "llstat.h"
 #include "httprequest.h"
 #include "httpoptions.h"
 #include "httpheaders.h"
 #include "httphandler.h"
+#include "lltrace.h"
 
 class LLViewerTexture;
 class LLTextureFetchWorker;
@@ -309,8 +308,8 @@ private:
 	LLMutex mQueueMutex;        //to protect mRequestMap and mCommands only
 	LLMutex mNetworkQueueMutex; //to protect mNetworkQueue, mHTTPTextureQueue and mCancelQueue.
 
-	static LLStat sCacheHitRate;
-	static LLStat sCacheReadLatency;
+	static LLTrace::MeasurementStatHandle<> sCacheHitRate;
+	static LLTrace::MeasurementStatHandle<> sCacheReadLatency;
 
 	LLTextureCache* mTextureCache;
 	LLImageDecodeThread* mImageDecodeThread;
@@ -330,7 +329,7 @@ private:
 	LLTextureInfo mTextureInfo;
 
 	// XXX possible delete
-	U32 mHTTPTextureBits;												// Mfnq
+	LLUnit<LLUnits::Bits, U32> mHTTPTextureBits;												// Mfnq
 
 	// XXX possible delete
 	//debug use
diff --git a/indra/newview/lltextureview.cpp b/indra/newview/lltextureview.cpp
index 16c42dbd43..7a6351c880 100644
--- a/indra/newview/lltextureview.cpp
+++ b/indra/newview/lltextureview.cpp
@@ -49,6 +49,8 @@
 #include "llviewertexturelist.h"
 #include "llvovolume.h"
 #include "llviewerstats.h"
+#include "llworld.h"
+#include "llviewerobjectlist.h"
 
 // For avatar texture view
 #include "llvoavatarself.h"
@@ -505,23 +507,26 @@ private:
 
 void LLGLTexMemBar::draw()
 {
-	S32 bound_mem = BYTES_TO_MEGA_BYTES(LLViewerTexture::sBoundTextureMemoryInBytes);
- 	S32 max_bound_mem = LLViewerTexture::sMaxBoundTextureMemInMegaBytes;
-	S32 total_mem = BYTES_TO_MEGA_BYTES(LLViewerTexture::sTotalTextureMemoryInBytes);
-	S32 max_total_mem = LLViewerTexture::sMaxTotalTextureMemInMegaBytes;
+	LLUnit<LLUnits::Megabytes, S32> bound_mem = LLViewerTexture::sBoundTextureMemory;
+ 	LLUnit<LLUnits::Megabytes, S32> max_bound_mem = LLViewerTexture::sMaxBoundTextureMem;
+	LLUnit<LLUnits::Megabytes, S32> total_mem = LLViewerTexture::sTotalTextureMemory;
+	LLUnit<LLUnits::Megabytes, S32> max_total_mem = LLViewerTexture::sMaxTotalTextureMem;
 	F32 discard_bias = LLViewerTexture::sDesiredDiscardBias;
-	F32 cache_usage = (F32)BYTES_TO_MEGA_BYTES(LLAppViewer::getTextureCache()->getUsage()) ;
-	F32 cache_max_usage = (F32)BYTES_TO_MEGA_BYTES(LLAppViewer::getTextureCache()->getMaxUsage()) ;
+	F32 cache_usage = (F32)LLTrace::Megabytes(LLAppViewer::getTextureCache()->getUsage()).value() ;
+	F32 cache_max_usage = (F32)LLTrace::Megabytes(LLAppViewer::getTextureCache()->getMaxUsage()).value() ;
 	S32 line_height = LLFontGL::getFontMonospace()->getLineHeight();
 	S32 v_offset = 0;//(S32)((texture_bar_height + 2.2f) * mTextureView->mNumTextureBars + 2.0f);
-	F32 total_texture_downloaded = (F32)gTotalTextureBytes / (1024 * 1024);
-	F32 total_object_downloaded = (F32)gTotalObjectBytes / (1024 * 1024);
-	U32 total_http_requests = LLAppViewer::getTextureFetch()->getTotalNumHTTPRequests();
+	LLUnit<LLUnits::Bytes, F32> total_texture_downloaded = gTotalTextureData;
+	LLUnit<LLUnits::Bytes, F32> total_object_downloaded = gTotalObjectData;
+	U32 total_http_requests = LLAppViewer::getTextureFetch()->getTotalNumHTTPRequests() ;
+	U32 total_active_cached_objects = LLWorld::getInstance()->getNumOfActiveCachedObjects();
+	U32 total_objects = gObjectList.getNumObjects();
+
 	//----------------------------------------------------------------------------
 	LLGLSUIDefault gls_ui;
 	LLColor4 text_color(1.f, 1.f, 1.f, 0.75f);
 	LLColor4 color;
-
+	
 	// Gray background using completely magic numbers
 	gGL.color4f(0.f, 0.f, 0.f, 0.25f);
 	// const LLRect & rect(getRect());
@@ -532,10 +537,10 @@ void LLGLTexMemBar::draw()
 											 text_color, LLFontGL::LEFT, LLFontGL::TOP);
 
 	text = llformat("GL Tot: %d/%d MB Bound: %d/%d MB FBO: %d MB Raw Tot: %d MB Bias: %.2f Cache: %.1f/%.1f MB",
-					total_mem,
-					max_total_mem,
-					bound_mem,
-					max_bound_mem,
+					total_mem.value(),
+					max_total_mem.value(),
+					bound_mem.value(),
+					max_bound_mem.value(),
 					LLRenderTarget::sBytesAllocated/(1024*1024),
 					LLImageRaw::sGlobalRawMemory >> 20,
 					discard_bias,
@@ -549,9 +554,11 @@ void LLGLTexMemBar::draw()
 	U32 cache_read(0U), cache_write(0U), res_wait(0U);
 	LLAppViewer::getTextureFetch()->getStateStats(&cache_read, &cache_write, &res_wait);
 	
-	text = llformat("Net Tot Tex: %.1f MB Tot Obj: %.1f MB Tot Htp: %d Cread: %u Cwrite: %u Rwait: %u",
-					total_texture_downloaded,
-					total_object_downloaded,
+	text = llformat("Net Tot Tex: %.1f MB Tot Obj: %.1f MB #Objs/#Cached: %d/%d Tot Htp: %d Cread: %u Cwrite: %u Rwait: %u",
+					total_texture_downloaded.value(),
+					total_object_downloaded.value(),
+					total_objects, 
+					total_active_cached_objects,
 					total_http_requests,
 					cache_read,
 					cache_write,
@@ -679,7 +686,7 @@ void LLGLTexSizeBar::draw()
 
 	if(LLImageGL::sCurTexSizeBar == mIndex)
 	{
-		F32 text_color[] = {1.f, 1.f, 1.f, 0.75f};	
+		LLColor4 text_color(1.f, 1.f, 1.f, 0.75f);	
 		std::string text;
 	
 		text = llformat("%d", mTopLoaded) ;
@@ -691,8 +698,8 @@ void LLGLTexSizeBar::draw()
 									 text_color, LLFontGL::LEFT, LLFontGL::TOP);
 	}
 
-	F32 loaded_color[] = {1.0f, 0.0f, 0.0f, 0.75f};
-	F32 bound_color[] = {1.0f, 1.0f, 0.0f, 0.75f};
+	LLColor4 loaded_color(1.0f, 0.0f, 0.0f, 0.75f);
+	LLColor4 bound_color(1.0f, 1.0f, 0.0f, 0.75f);
 	gl_rect_2d(mLeft, mBottom + (S32)(mTopLoaded * mScale), (mLeft + mRight) / 2, mBottom, loaded_color) ;
 	gl_rect_2d((mLeft + mRight) / 2, mBottom + (S32)(mTopBound * mScale), mRight, mBottom, bound_color) ;
 }
diff --git a/indra/newview/lltoolbarview.cpp b/indra/newview/lltoolbarview.cpp
index a29f58b319..548cb7da7b 100644
--- a/indra/newview/lltoolbarview.cpp
+++ b/indra/newview/lltoolbarview.cpp
@@ -519,7 +519,7 @@ void LLToolBarView::draw()
 	{
 		if (mToolbars[i])
 		{
-			LLLayoutStack::ELayoutOrientation orientation = LLToolBarEnums::getOrientation(mToolbars[i]->getSideType());
+			LLView::EOrientation orientation = LLToolBarEnums::getOrientation(mToolbars[i]->getSideType());
 
 			if (orientation == LLLayoutStack::HORIZONTAL)
 			{
diff --git a/indra/newview/lltooldraganddrop.cpp b/indra/newview/lltooldraganddrop.cpp
index c69999981c..90ae0b428b 100644
--- a/indra/newview/lltooldraganddrop.cpp
+++ b/indra/newview/lltooldraganddrop.cpp
@@ -1062,7 +1062,7 @@ void LLToolDragAndDrop::dropTextureAllFaces(LLViewerObject* hit_obj,
 		return;
 	}
 	LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture(asset_id);
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_EDIT_TEXTURE_COUNT );
+	add(LLStatViewer::EDIT_TEXTURE, 1);
 	S32 num_faces = hit_obj->getNumTEs();
 	for( S32 face = 0; face < num_faces; face++ )
 	{
@@ -1130,7 +1130,7 @@ void LLToolDragAndDrop::dropTextureOneFace(LLViewerObject* hit_obj,
 	}
 	// update viewer side image in anticipation of update from simulator
 	LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture(asset_id);
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_EDIT_TEXTURE_COUNT );
+	add(LLStatViewer::EDIT_TEXTURE, 1);
 	hit_obj->setTEImage(hit_face, image);
 	dialog_refresh_all();
 
@@ -1354,7 +1354,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
 	effectp->setDuration(LL_HUD_DUR_SHORT);
 	effectp->setColor(LLColor4U(gAgent.getEffectColor()));
 
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_REZ_COUNT);
+	add(LLStatViewer::OBJECT_REZ, 1);
 }
 
 void LLToolDragAndDrop::dropInventory(LLViewerObject* hit_obj,
diff --git a/indra/newview/lltoolplacer.cpp b/indra/newview/lltoolplacer.cpp
index 93ba3b2558..c026ddd42e 100644
--- a/indra/newview/lltoolplacer.cpp
+++ b/indra/newview/lltoolplacer.cpp
@@ -433,7 +433,7 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
 	effectp->setDuration(LL_HUD_DUR_SHORT);
 	effectp->setColor(LLColor4U(gAgent.getEffectColor()));
 
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_CREATE_COUNT);
+	add(LLStatViewer::OBJECT_CREATE, 1);
 
 	return TRUE;
 }
diff --git a/indra/newview/llviewerassetstats.cpp b/indra/newview/llviewerassetstats.cpp
index 4c59fd0371..8623af52ff 100644
--- a/indra/newview/llviewerassetstats.cpp
+++ b/indra/newview/llviewerassetstats.cpp
@@ -31,6 +31,8 @@
 
 #include "stdtypes.h"
 #include "llvoavatar.h"
+#include "llsdparam.h"
+#include "llsdutil.h"
 
 /*
  * Classes and utility functions for per-thread and per-region
@@ -78,128 +80,261 @@
  *
  */
 
+namespace LLViewerAssetStatsFF
+{
+	static EViewerAssetCategories asset_type_to_category(const LLViewerAssetType::EType at, bool with_http, bool is_temp)
+	{
+		// For statistical purposes, we divide GETs into several
+		// populations of asset fetches:
+		//  - textures which are de-prioritized in the asset system
+		//  - wearables (clothing, bodyparts) which directly affect
+		//    user experiences when they log in
+		//  - sounds
+		//  - gestures
+		//  - everything else.
+		//
+		llassert_always(50 == LLViewerAssetType::AT_COUNT);
+
+		// Multiple asset definitions are floating around so this requires some
+		// maintenance and attention.
+		static const EViewerAssetCategories asset_to_bin_map[LLViewerAssetType::AT_COUNT] =
+		{
+			EVACTextureTempHTTPGet,			// (0) AT_TEXTURE
+			EVACSoundUDPGet,				// AT_SOUND
+			EVACOtherGet,					// AT_CALLINGCARD
+			EVACOtherGet,					// AT_LANDMARK
+			EVACOtherGet,					// AT_SCRIPT
+			EVACWearableUDPGet,				// AT_CLOTHING
+			EVACOtherGet,					// AT_OBJECT
+			EVACOtherGet,					// AT_NOTECARD
+			EVACOtherGet,					// AT_CATEGORY
+			EVACOtherGet,					// AT_ROOT_CATEGORY
+			EVACOtherGet,					// (10) AT_LSL_TEXT
+			EVACOtherGet,					// AT_LSL_BYTECODE
+			EVACOtherGet,					// AT_TEXTURE_TGA
+			EVACWearableUDPGet,				// AT_BODYPART
+			EVACOtherGet,					// AT_TRASH
+			EVACOtherGet,					// AT_SNAPSHOT_CATEGORY
+			EVACOtherGet,					// AT_LOST_AND_FOUND
+			EVACSoundUDPGet,				// AT_SOUND_WAV
+			EVACOtherGet,					// AT_IMAGE_TGA
+			EVACOtherGet,					// AT_IMAGE_JPEG
+			EVACGestureUDPGet,				// (20) AT_ANIMATION
+			EVACGestureUDPGet,				// AT_GESTURE
+			EVACOtherGet,					// AT_SIMSTATE
+			EVACOtherGet,					// AT_FAVORITE
+			EVACOtherGet,					// AT_LINK
+			EVACOtherGet,					// AT_LINK_FOLDER
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// (30)
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// (40)
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					//
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// 
+			EVACOtherGet,					// AT_MESH
+			// (50)
+		};
 
-// ------------------------------------------------------
-// Global data definitions
-// ------------------------------------------------------
-LLViewerAssetStats * gViewerAssetStatsMain(0);
-LLViewerAssetStats * gViewerAssetStatsThread1(0);
+		if (at < 0 || at >= LLViewerAssetType::AT_COUNT)
+		{
+			return EVACOtherGet;
+		}
+		EViewerAssetCategories ret(asset_to_bin_map[at]);
+		if (EVACTextureTempHTTPGet == ret)
+		{
+			// Indexed with [is_temp][with_http]
+			static const EViewerAssetCategories texture_bin_map[2][2] =
+			{
+				{
+					EVACTextureNonTempUDPGet,
+						EVACTextureNonTempHTTPGet,
+				},
+				{
+					EVACTextureTempUDPGet,
+						EVACTextureTempHTTPGet,
+					}
+			};
 
+			ret = texture_bin_map[is_temp][with_http];
+		}
+		return ret;
+	}
+
+	static LLTrace::CountStatHandle<> sEnqueueAssetRequestsTempTextureHTTP   ("enqueuedassetrequeststemptexturehttp", 
+																	"Number of temporary texture asset http requests enqueued"),
+							sEnqueueAssetRequestsTempTextureUDP    ("enqueuedassetrequeststemptextureudp", 
+																	"Number of temporary texture asset udp requests enqueued"),
+							sEnqueueAssetRequestsNonTempTextureHTTP("enqueuedassetrequestsnontemptexturehttp", 
+																	"Number of texture asset http requests enqueued"),
+							sEnqueueAssetRequestsNonTempTextureUDP ("enqueuedassetrequestsnontemptextureudp", 
+																	"Number of texture asset udp requests enqueued"),
+							sEnqueuedAssetRequestsWearableUdp      ("enqueuedassetrequestswearableudp", 
+																	"Number of wearable asset requests enqueued"),
+							sEnqueuedAssetRequestsSoundUdp         ("enqueuedassetrequestssoundudp", 
+																	"Number of sound asset requests enqueued"),
+							sEnqueuedAssetRequestsGestureUdp       ("enqueuedassetrequestsgestureudp", 
+																	"Number of gesture asset requests enqueued"),
+							sEnqueuedAssetRequestsOther            ("enqueuedassetrequestsother", 
+																	"Number of other asset requests enqueued");
+
+	static LLTrace::CountStatHandle<>* sEnqueued[EVACCount] = {		
+		&sEnqueueAssetRequestsTempTextureHTTP,   
+		&sEnqueueAssetRequestsTempTextureUDP,  
+		&sEnqueueAssetRequestsNonTempTextureHTTP,
+		&sEnqueueAssetRequestsNonTempTextureUDP,
+		&sEnqueuedAssetRequestsWearableUdp,
+		&sEnqueuedAssetRequestsSoundUdp,
+		&sEnqueuedAssetRequestsGestureUdp,
+		&sEnqueuedAssetRequestsOther            
+	};
+
+	static LLTrace::CountStatHandle<> sDequeueAssetRequestsTempTextureHTTP   ("dequeuedassetrequeststemptexturehttp", 
+																	"Number of temporary texture asset http requests dequeued"),
+							sDequeueAssetRequestsTempTextureUDP    ("dequeuedassetrequeststemptextureudp", 
+																	"Number of temporary texture asset udp requests dequeued"),
+							sDequeueAssetRequestsNonTempTextureHTTP("dequeuedassetrequestsnontemptexturehttp", 
+																	"Number of texture asset http requests dequeued"),
+							sDequeueAssetRequestsNonTempTextureUDP ("dequeuedassetrequestsnontemptextureudp", 
+																	"Number of texture asset udp requests dequeued"),
+							sDequeuedAssetRequestsWearableUdp      ("dequeuedassetrequestswearableudp", 
+																	"Number of wearable asset requests dequeued"),
+							sDequeuedAssetRequestsSoundUdp         ("dequeuedassetrequestssoundudp", 
+																	"Number of sound asset requests dequeued"),
+							sDequeuedAssetRequestsGestureUdp       ("dequeuedassetrequestsgestureudp", 
+																	"Number of gesture asset requests dequeued"),
+							sDequeuedAssetRequestsOther            ("dequeuedassetrequestsother", 
+																	"Number of other asset requests dequeued");
+
+	static LLTrace::CountStatHandle<>* sDequeued[EVACCount] = {
+		&sDequeueAssetRequestsTempTextureHTTP,   
+		&sDequeueAssetRequestsTempTextureUDP,  
+		&sDequeueAssetRequestsNonTempTextureHTTP,
+		&sDequeueAssetRequestsNonTempTextureUDP,
+		&sDequeuedAssetRequestsWearableUdp,
+		&sDequeuedAssetRequestsSoundUdp,
+		&sDequeuedAssetRequestsGestureUdp,
+		&sDequeuedAssetRequestsOther            
+	};
+
+	static LLTrace::MeasurementStatHandle<LLTrace::Seconds>	sResponseAssetRequestsTempTextureHTTP   ("assetresponsetimestemptexturehttp", 
+																							"Time spent responding to temporary texture asset http requests"),
+													sResponseAssetRequestsTempTextureUDP    ("assetresponsetimestemptextureudp", 
+																							"Time spent responding to temporary texture asset udp requests"),
+													sResponseAssetRequestsNonTempTextureHTTP("assetresponsetimesnontemptexturehttp", 
+																							"Time spent responding to texture asset http requests"),
+													sResponseAssetRequestsNonTempTextureUDP ("assetresponsetimesnontemptextureudp", 
+																							"Time spent responding to texture asset udp requests"),
+													sResponsedAssetRequestsWearableUdp      ("assetresponsetimeswearableudp", 
+																							"Time spent responding to wearable asset requests"),
+													sResponsedAssetRequestsSoundUdp         ("assetresponsetimessoundudp", 
+																							"Time spent responding to sound asset requests"),
+													sResponsedAssetRequestsGestureUdp       ("assetresponsetimesgestureudp", 
+																							"Time spent responding to gesture asset requests"),
+													sResponsedAssetRequestsOther            ("assetresponsetimesother", 
+																							"Time spent responding to other asset requests");
+
+	static LLTrace::MeasurementStatHandle<LLTrace::Seconds>* sResponse[EVACCount] = {
+		&sResponseAssetRequestsTempTextureHTTP,   
+		&sResponseAssetRequestsTempTextureUDP,  
+		&sResponseAssetRequestsNonTempTextureHTTP,
+		&sResponseAssetRequestsNonTempTextureUDP,
+		&sResponsedAssetRequestsWearableUdp,
+		&sResponsedAssetRequestsSoundUdp,
+		&sResponsedAssetRequestsGestureUdp,
+		&sResponsedAssetRequestsOther            
+	};
+}
 
 // ------------------------------------------------------
-// Local declarations
+// Global data definitions
 // ------------------------------------------------------
-namespace
-{
-
-static LLViewerAssetStats::EViewerAssetCategories
-asset_type_to_category(const LLViewerAssetType::EType at, bool with_http, bool is_temp);
-
-}
+LLViewerAssetStats * gViewerAssetStats(0);
 
 // ------------------------------------------------------
-// LLViewerAssetStats::PerRegionStats struct definition
+// LLViewerAssetStats class definition
 // ------------------------------------------------------
-void
-LLViewerAssetStats::PerRegionStats::reset()
+LLViewerAssetStats::LLViewerAssetStats()
+:	mRegionHandle(U64(0)),
+	mCurRecording(NULL)
 {
-	for (int i(0); i < LL_ARRAY_SIZE(mRequests); ++i)
-	{
-		mRequests[i].mEnqueued.reset();
-		mRequests[i].mDequeued.reset();
-		mRequests[i].mResponse.reset();
-	}
-	mFPS.reset();
-	
-	mTotalTime = 0;
-	mStartTimestamp = LLViewerAssetStatsFF::get_timestamp();
+	start();
 }
 
 
-void
-LLViewerAssetStats::PerRegionStats::merge(const LLViewerAssetStats::PerRegionStats & src)
+LLViewerAssetStats::LLViewerAssetStats(const LLViewerAssetStats & src)
+:	mRegionHandle(src.mRegionHandle),
+	mPhaseStats(src.mPhaseStats),
+	mAvatarRezStates(src.mAvatarRezStates)
 {
-	// mRegionHandle, mTotalTime, mStartTimestamp are left alone.
-	
-	// mFPS
-	if (src.mFPS.getCount() && mFPS.getCount())
-	{
-		mFPS.merge(src.mFPS);
-	}
+	src.mCurRecording->update();
+	mRegionRecordings = src.mRegionRecordings;
 
-	// Avatar stats - data all comes from main thread, so leave alone.
+	mCurRecording = &mRegionRecordings[mRegionHandle];
+	mCurRecording->stop();
 
-	// Requests
-	for (int i = 0; i < LL_ARRAY_SIZE(mRequests); ++i)
+	// assume this is being passed to another thread, so make sure we have unique copies of recording data
+	for (PerRegionRecordingContainer::iterator it = mRegionRecordings.begin(), end_it = mRegionRecordings.end();
+		it != end_it;
+		++it)
 	{
-		mRequests[i].mEnqueued.merge(src.mRequests[i].mEnqueued);
-		mRequests[i].mDequeued.merge(src.mRequests[i].mDequeued);
-		mRequests[i].mResponse.merge(src.mRequests[i].mResponse);
+		it->second.makeUnique();
 	}
 
+	LLStopWatchControlsMixin<LLViewerAssetStats>::setPlayState(src.getPlayState());
 }
 
-
-void
-LLViewerAssetStats::PerRegionStats::accumulateTime(duration_t now)
+void LLViewerAssetStats::handleStart()
 {
-	mTotalTime += (now - mStartTimestamp);
-	mStartTimestamp = now;
+	if (mCurRecording)
+	{
+		mCurRecording->start();
+	}
 }
 
-
-// ------------------------------------------------------
-// LLViewerAssetStats class definition
-// ------------------------------------------------------
-LLViewerAssetStats::LLViewerAssetStats()
-	: mRegionHandle(U64(0))
+void LLViewerAssetStats::handleStop()
 {
-	reset();
+	if (mCurRecording)
+	{
+		mCurRecording->stop();
+	}
 }
 
-
-LLViewerAssetStats::LLViewerAssetStats(const LLViewerAssetStats & src)
-	: mRegionHandle(src.mRegionHandle),
-	  mResetTimestamp(src.mResetTimestamp),
-	  mPhaseStats(src.mPhaseStats),
-	  mAvatarRezStates(src.mAvatarRezStates)
+void LLViewerAssetStats::handleReset()
 {
-	const PerRegionContainer::const_iterator it_end(src.mRegionStats.end());
-	for (PerRegionContainer::const_iterator it(src.mRegionStats.begin()); it_end != it; ++it)
-	{
-		mRegionStats[it->first] = new PerRegionStats(*it->second);
-	}
-	mCurRegionStats = mRegionStats[mRegionHandle];
+	reset();
 }
 
 
-void
-LLViewerAssetStats::reset()
+void LLViewerAssetStats::reset()
 {
 	// Empty the map of all region stats
-	mRegionStats.clear();
+	mRegionRecordings.clear();
 
-	// If we have a current stats, reset it, otherwise, as at construction,
-	// create a new one as we must always have a current stats block.
-	if (mCurRegionStats)
-	{
-		mCurRegionStats->reset();
-	}
-	else
+	// initialize new recording for current region
+	if (mRegionHandle)
 	{
-		mCurRegionStats = new PerRegionStats(mRegionHandle);
+		mCurRecording = &mRegionRecordings[mRegionHandle];
 	}
-
-	// And add reference to map
-	mRegionStats[mRegionHandle] = mCurRegionStats;
-
-	// Start timestamp consistent with per-region collector
-	mResetTimestamp = mCurRegionStats->mStartTimestamp;
 }
 
-
-void
-LLViewerAssetStats::setRegion(region_handle_t region_handle)
+void LLViewerAssetStats::setRegion(region_handle_t region_handle)
 {
 	if (region_handle == mRegionHandle)
 	{
@@ -207,445 +342,308 @@ LLViewerAssetStats::setRegion(region_handle_t region_handle)
 		return;
 	}
 
-	// Get duration for current set
-	const duration_t now = LLViewerAssetStatsFF::get_timestamp();
-	mCurRegionStats->accumulateTime(now);
-
-	// Prepare new set
-	PerRegionContainer::iterator new_stats = mRegionStats.find(region_handle);
-	if (mRegionStats.end() == new_stats)
+	if (mCurRecording)
 	{
-		// Haven't seen this region_id before, create a new block and make it current.
-		mCurRegionStats = new PerRegionStats(region_handle);
-		mRegionStats[region_handle] = mCurRegionStats;
+		mCurRecording->pause();
 	}
-	else
+	if (region_handle)
 	{
-		mCurRegionStats = new_stats->second;
+		mCurRecording = &mRegionRecordings[region_handle];
+		mCurRecording->start();
 	}
-	mCurRegionStats->mStartTimestamp = now;
+
 	mRegionHandle = region_handle;
 }
 
-
-void
-LLViewerAssetStats::recordGetEnqueued(LLViewerAssetType::EType at, bool with_http, bool is_temp)
+void LLViewerAssetStats::recordAvatarStats()
 {
-	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
-	
-	++(mCurRegionStats->mRequests[int(eac)].mEnqueued);
-}
-	
-void
-LLViewerAssetStats::recordGetDequeued(LLViewerAssetType::EType at, bool with_http, bool is_temp)
-{
-	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
-
-	++(mCurRegionStats->mRequests[int(eac)].mDequeued);
+	LLVOAvatar::getNearbyRezzedStats(mAvatarRezStates);
+	mPhaseStats.clear();
+	mPhaseStats["cloud"] = LLViewerStats::PhaseMap::getPhaseStats("cloud");
+	mPhaseStats["cloud-or-gray"] = LLViewerStats::PhaseMap::getPhaseStats("cloud-or-gray");
 }
 
-void
-LLViewerAssetStats::recordGetServiced(LLViewerAssetType::EType at, bool with_http, bool is_temp, duration_t duration)
+void LLViewerAssetStats::updateStats()
 {
-	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
-
-	mCurRegionStats->mRequests[int(eac)].mResponse.record(duration);
+	if (mCurRecording && mCurRecording->isStarted())
+	{
+		mCurRecording->update();
+	}
 }
 
-void
-LLViewerAssetStats::recordFPS(F32 fps)
+void LLViewerAssetStats::getStats(AssetStats& stats, bool compact_output)
 {
-	mCurRegionStats->mFPS.record(fps);
-}
+	using namespace LLViewerAssetStatsFF;
+	
+	stats.regions.setProvided();
+	
+	for (PerRegionRecordingContainer::iterator it = mRegionRecordings.begin(), end_it = mRegionRecordings.end();
+		it != end_it;
+		++it)
+	{
+		RegionStats& r = stats.regions.add();
+		LLTrace::Recording& rec = it->second;
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACTextureTempHTTPGet]) 
+			|| rec.getSum(*sDequeued[EVACTextureTempHTTPGet])
+			|| rec.getSum(*sResponse[EVACTextureTempHTTPGet]).value())
+		{
+			r.get_texture_temp_http	.enqueued((S32)rec.getSum(*sEnqueued[EVACTextureTempHTTPGet]))
+									.dequeued((S32)rec.getSum(*sDequeued[EVACTextureTempHTTPGet]))
+									.resp_count((S32)rec.getSum(*sResponse[EVACTextureTempHTTPGet]).value())
+									.resp_min(rec.getMin(*sResponse[EVACTextureTempHTTPGet]).value())
+									.resp_max(rec.getMax(*sResponse[EVACTextureTempHTTPGet]).value())
+									.resp_mean(rec.getMean(*sResponse[EVACTextureTempHTTPGet]).value());
+		}
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACTextureTempUDPGet]) 
+			|| rec.getSum(*sDequeued[EVACTextureTempUDPGet])
+			|| rec.getSum(*sResponse[EVACTextureTempUDPGet]).value())
+		{
+			r.get_texture_temp_udp	.enqueued((S32)rec.getSum(*sEnqueued[EVACTextureTempUDPGet]))
+									.dequeued((S32)rec.getSum(*sDequeued[EVACTextureTempUDPGet]))
+									.resp_count((S32)rec.getSum(*sResponse[EVACTextureTempUDPGet]).value())
+									.resp_min(rec.getMin(*sResponse[EVACTextureTempUDPGet]).value())
+									.resp_max(rec.getMax(*sResponse[EVACTextureTempUDPGet]).value())
+									.resp_mean(rec.getMean(*sResponse[EVACTextureTempUDPGet]).value());
+		}
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACTextureNonTempHTTPGet]) 
+			|| rec.getSum(*sDequeued[EVACTextureNonTempHTTPGet])
+			|| rec.getSum(*sResponse[EVACTextureNonTempHTTPGet]).value())
+		{
+			r.get_texture_non_temp_http	.enqueued((S32)rec.getSum(*sEnqueued[EVACTextureNonTempHTTPGet]))
+										.dequeued((S32)rec.getSum(*sDequeued[EVACTextureNonTempHTTPGet]))
+										.resp_count((S32)rec.getSum(*sResponse[EVACTextureNonTempHTTPGet]).value())
+										.resp_min(rec.getMin(*sResponse[EVACTextureNonTempHTTPGet]).value())
+										.resp_max(rec.getMax(*sResponse[EVACTextureNonTempHTTPGet]).value())
+										.resp_mean(rec.getMean(*sResponse[EVACTextureNonTempHTTPGet]).value());
+		}
 
-void
-LLViewerAssetStats::recordAvatarStats()
-{
-	std::vector<S32> rez_counts;
-	LLVOAvatar::getNearbyRezzedStats(rez_counts);
-	mAvatarRezStates = rez_counts;
-	mPhaseStats.clear();
-	mPhaseStats["cloud"] = LLViewerStats::PhaseMap::getPhaseStats("cloud");
-	mPhaseStats["cloud-or-gray"] = LLViewerStats::PhaseMap::getPhaseStats("cloud-or-gray");
-}
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACTextureNonTempUDPGet]) 
+			|| rec.getSum(*sDequeued[EVACTextureNonTempUDPGet])
+			|| rec.getSum(*sResponse[EVACTextureNonTempUDPGet]).value())
+		{
+			r.get_texture_non_temp_udp	.enqueued((S32)rec.getSum(*sEnqueued[EVACTextureNonTempUDPGet]))
+										.dequeued((S32)rec.getSum(*sDequeued[EVACTextureNonTempUDPGet]))
+										.resp_count((S32)rec.getSum(*sResponse[EVACTextureNonTempUDPGet]).value())
+										.resp_min(rec.getMin(*sResponse[EVACTextureNonTempUDPGet]).value())
+										.resp_max(rec.getMax(*sResponse[EVACTextureNonTempUDPGet]).value())
+										.resp_mean(rec.getMean(*sResponse[EVACTextureNonTempUDPGet]).value());
+		}
 
-LLSD
-LLViewerAssetStats::asLLSD(bool compact_output)
-{
-	// Top-level tags
-	static const LLSD::String tags[EVACCount] = 
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACWearableUDPGet]) 
+			|| rec.getSum(*sDequeued[EVACWearableUDPGet])
+			|| rec.getSum(*sResponse[EVACWearableUDPGet]).value())
 		{
-			LLSD::String("get_texture_temp_http"),
-			LLSD::String("get_texture_temp_udp"),
-			LLSD::String("get_texture_non_temp_http"),
-			LLSD::String("get_texture_non_temp_udp"),
-			LLSD::String("get_wearable_udp"),
-			LLSD::String("get_sound_udp"),
-			LLSD::String("get_gesture_udp"),
-			LLSD::String("get_other")
-		};
+			r.get_wearable_udp	.enqueued((S32)rec.getSum(*sEnqueued[EVACWearableUDPGet]))
+								.dequeued((S32)rec.getSum(*sDequeued[EVACWearableUDPGet]))
+								.resp_count((S32)rec.getSum(*sResponse[EVACWearableUDPGet]).value())
+								.resp_min(rec.getMin(*sResponse[EVACWearableUDPGet]).value())
+								.resp_max(rec.getMax(*sResponse[EVACWearableUDPGet]).value())
+								.resp_mean(rec.getMean(*sResponse[EVACWearableUDPGet]).value());
+		}
 
-	// Stats Group Sub-tags.
-	static const LLSD::String enq_tag("enqueued");
-	static const LLSD::String deq_tag("dequeued");
-	static const LLSD::String rcnt_tag("resp_count");
-	static const LLSD::String rmin_tag("resp_min");
-	static const LLSD::String rmax_tag("resp_max");
-	static const LLSD::String rmean_tag("resp_mean");
-
-	// MMM Group Sub-tags.
-	static const LLSD::String cnt_tag("count");
-	static const LLSD::String min_tag("min");
-	static const LLSD::String max_tag("max");
-	static const LLSD::String mean_tag("mean");
-
-	// Avatar sub-tags
-	static const LLSD::String avatar_tag("avatar");
-	static const LLSD::String avatar_nearby_tag("nearby");
-	static const LLSD::String avatar_phase_stats_tag("phase_stats");
-	
-	const duration_t now = LLViewerAssetStatsFF::get_timestamp();
-	mCurRegionStats->accumulateTime(now);
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACSoundUDPGet]) 
+			|| rec.getSum(*sDequeued[EVACSoundUDPGet])
+			|| rec.getSum(*sResponse[EVACSoundUDPGet]).value())
+		{
+			r.get_sound_udp	.enqueued((S32)rec.getSum(*sEnqueued[EVACSoundUDPGet]))
+							.dequeued((S32)rec.getSum(*sDequeued[EVACSoundUDPGet]))
+							.resp_count((S32)rec.getSum(*sResponse[EVACSoundUDPGet]).value())
+							.resp_min(rec.getMin(*sResponse[EVACSoundUDPGet]).value())
+							.resp_max(rec.getMax(*sResponse[EVACSoundUDPGet]).value())
+							.resp_mean(rec.getMean(*sResponse[EVACSoundUDPGet]).value());
+		}
 
-	LLSD regions = LLSD::emptyArray();
-	for (PerRegionContainer::iterator it = mRegionStats.begin();
-		 mRegionStats.end() != it;
-		 ++it)
-	{
-		if (0 == it->first)
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACGestureUDPGet]) 
+			|| rec.getSum(*sDequeued[EVACGestureUDPGet])
+			|| rec.getSum(*sResponse[EVACGestureUDPGet]).value())
 		{
-			// Never emit NULL UUID/handle in results.
-			continue;
+			r.get_gesture_udp	.enqueued((S32)rec.getSum(*sEnqueued[EVACGestureUDPGet]))
+								.dequeued((S32)rec.getSum(*sDequeued[EVACGestureUDPGet]))
+								.resp_count((S32)rec.getSum(*sResponse[EVACGestureUDPGet]).value())
+								.resp_min(rec.getMin(*sResponse[EVACGestureUDPGet]).value())
+								.resp_max(rec.getMax(*sResponse[EVACGestureUDPGet]).value())
+								.resp_mean(rec.getMean(*sResponse[EVACGestureUDPGet]).value());
 		}
 
-		PerRegionStats & stats = *it->second;
-		
-		LLSD reg_stat = LLSD::emptyMap();
-		
-		for (int i = 0; i < LL_ARRAY_SIZE(tags); ++i)
+		if (!compact_output
+			|| rec.getSum(*sEnqueued[EVACOtherGet]) 
+			|| rec.getSum(*sDequeued[EVACOtherGet])
+			|| rec.getSum(*sResponse[EVACOtherGet]).value())
 		{
-			PerRegionStats::prs_group & group(stats.mRequests[i]);
-			
-			if ((! compact_output) ||
-				group.mEnqueued.getCount() ||
-				group.mDequeued.getCount() ||
-				group.mResponse.getCount())
-			{
-				LLSD & slot = reg_stat[tags[i]];
-				slot = LLSD::emptyMap();
-				slot[enq_tag] = LLSD(S32(stats.mRequests[i].mEnqueued.getCount()));
-				slot[deq_tag] = LLSD(S32(stats.mRequests[i].mDequeued.getCount()));
-				slot[rcnt_tag] = LLSD(S32(stats.mRequests[i].mResponse.getCount()));
-				slot[rmin_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMin() * 1.0e-6));
-				slot[rmax_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMax() * 1.0e-6));
-				slot[rmean_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMean() * 1.0e-6));
-			}
+			r.get_other	.enqueued((S32)rec.getSum(*sEnqueued[EVACOtherGet]))
+						.dequeued((S32)rec.getSum(*sDequeued[EVACOtherGet]))
+						.resp_count((S32)rec.getSum(*sResponse[EVACOtherGet]).value())
+						.resp_min(rec.getMin(*sResponse[EVACOtherGet]).value())
+						.resp_max(rec.getMax(*sResponse[EVACOtherGet]).value())
+						.resp_mean(rec.getMean(*sResponse[EVACOtherGet]).value());
 		}
 
-		if ((! compact_output) || stats.mFPS.getCount())
+		S32 fps = (S32)rec.getSum(LLStatViewer::FPS_SAMPLE);
+		if (!compact_output || fps != 0)
 		{
-			LLSD & slot = reg_stat["fps"];
-			slot = LLSD::emptyMap();
-			slot[cnt_tag] = LLSD(S32(stats.mFPS.getCount()));
-			slot[min_tag] = LLSD(F64(stats.mFPS.getMin()));
-			slot[max_tag] = LLSD(F64(stats.mFPS.getMax()));
-			slot[mean_tag] = LLSD(F64(stats.mFPS.getMean()));
+			r.fps.count(fps);
+			r.fps.min(rec.getMin(LLStatViewer::FPS_SAMPLE));
+			r.fps.max(rec.getMax(LLStatViewer::FPS_SAMPLE));
+			r.fps.mean(rec.getMean(LLStatViewer::FPS_SAMPLE));
 		}
 		U32 grid_x(0), grid_y(0);
 		grid_from_region_handle(it->first, &grid_x, &grid_y);
-		reg_stat["grid_x"] = LLSD::Integer(grid_x);
-		reg_stat["grid_y"] = LLSD::Integer(grid_y);
-		reg_stat["duration"] = LLSD::Real(stats.mTotalTime * 1.0e-6);		
-		regions.append(reg_stat);
+		r.grid_x(grid_x);
+		r.grid_y(grid_y);
+		r.duration(LLUnit<LLUnits::Microseconds, F64>(rec.getDuration()).value());
 	}
 
-	LLSD ret = LLSD::emptyMap();
-	ret["regions"] = regions;
-	ret["duration"] = LLSD::Real((now - mResetTimestamp) * 1.0e-6);
-	LLSD avatar_info;
-	avatar_info[avatar_nearby_tag] = LLSD::emptyArray();
+	stats.duration(mCurRecording ? LLUnit<LLUnits::Microseconds, F64>(mCurRecording->getDuration()).value() : 0.0);
+	stats.avatar.setProvided(true);
+
 	for (S32 rez_stat=0; rez_stat < mAvatarRezStates.size(); ++rez_stat)
 	{
-		std::string rez_status_name = LLVOAvatar::rezStatusToString(rez_stat);
-		avatar_info[avatar_nearby_tag][rez_status_name] = mAvatarRezStates[rez_stat];
+		stats.avatar.nearby	.cloud(mAvatarRezStates[0])
+							.gray(mAvatarRezStates[1])
+							.textured(mAvatarRezStates[2]);
 	}
-	avatar_info[avatar_phase_stats_tag]["cloud"] = mPhaseStats["cloud"].getData();
-	avatar_info[avatar_phase_stats_tag]["cloud-or-gray"] = mPhaseStats["cloud-or-gray"].getData();
-	ret[avatar_tag] = avatar_info;
-	
-	return ret;
+
+	stats.avatar.phase_stats	.cloud(mPhaseStats["cloud"].asLLSD())
+								.cloud_or_gray(mPhaseStats["cloud-or-gray"].asLLSD());
 }
 
-void
-LLViewerAssetStats::merge(const LLViewerAssetStats & src)
+LLSD LLViewerAssetStats::asLLSD(bool compact_output)
 {
-	// mRegionHandle, mCurRegionStats and mResetTimestamp are left untouched.
-	// Just merge the stats bodies
-
-	const PerRegionContainer::const_iterator it_end(src.mRegionStats.end());
-	for (PerRegionContainer::const_iterator it(src.mRegionStats.begin()); it_end != it; ++it)
+	LLParamSDParser parser;
+	LLSD sd;
+	AssetStats stats;
+	getStats(stats, compact_output);
+	LLInitParam::predicate_rule_t rule = LLInitParam::default_parse_rules();
+	if (!compact_output)
 	{
-		PerRegionContainer::iterator dst(mRegionStats.find(it->first));
-		if (mRegionStats.end() == dst)
-		{
-			// Destination is missing data, just make a private copy
-			mRegionStats[it->first] = new PerRegionStats(*it->second);
-		}
-		else
-		{
-			dst->second->merge(*it->second);
-		}
+		rule.allow(LLInitParam::EMPTY);
 	}
+	parser.writeSD(sd, stats, rule);
+	return sd;
 }
 
-
 // ------------------------------------------------------
 // Global free-function definitions (LLViewerAssetStatsFF namespace)
 // ------------------------------------------------------
 
 namespace LLViewerAssetStatsFF
 {
-
-//
-// Target thread is elaborated in the function name.  This could
-// have been something 'templatey' like specializations iterated
-// over a set of constants but with so few, this is clearer I think.
-//
-// As for the threads themselves... rather than do fine-grained
-// locking as we gather statistics, this code creates a collector
-// for each thread, allocated and run independently.  Logging
-// happens at relatively infrequent intervals and at that time
-// the data is sent to a single thread to be aggregated into
-// a single entity with locks, thread safety and other niceties.
-//
-// A particularly fussy implementation would distribute the
-// per-thread pointers across separate cache lines.  But that should
-// be beyond current requirements.
-//
-
-// 'main' thread - initial program thread
-
-void
-set_region_main(LLViewerAssetStats::region_handle_t region_handle)
+void set_region(LLViewerAssetStats::region_handle_t region_handle)
 {
-	if (! gViewerAssetStatsMain)
+	if (! gViewerAssetStats)
 		return;
 
-	gViewerAssetStatsMain->setRegion(region_handle);
+	gViewerAssetStats->setRegion(region_handle);
 }
 
-void
-record_enqueue_main(LLViewerAssetType::EType at, bool with_http, bool is_temp)
+void record_enqueue(LLViewerAssetType::EType at, bool with_http, bool is_temp)
 {
-	if (! gViewerAssetStatsMain)
-		return;
-
-	gViewerAssetStatsMain->recordGetEnqueued(at, with_http, is_temp);
-}
-
-void
-record_dequeue_main(LLViewerAssetType::EType at, bool with_http, bool is_temp)
-{
-	if (! gViewerAssetStatsMain)
-		return;
-
-	gViewerAssetStatsMain->recordGetDequeued(at, with_http, is_temp);
-}
-
-void
-record_response_main(LLViewerAssetType::EType at, bool with_http, bool is_temp, LLViewerAssetStats::duration_t duration)
-{
-	if (! gViewerAssetStatsMain)
-		return;
-
-	gViewerAssetStatsMain->recordGetServiced(at, with_http, is_temp, duration);
-}
-
-void
-record_fps_main(F32 fps)
-{
-	if (! gViewerAssetStatsMain)
-		return;
-
-	gViewerAssetStatsMain->recordFPS(fps);
-}
-
-void
-record_avatar_stats()
-{
-	if (! gViewerAssetStatsMain)
-		return;
+	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
 
-	gViewerAssetStatsMain->recordAvatarStats();
+	add(*sEnqueued[int(eac)], 1);
 }
 
-// 'thread1' - should be for TextureFetch thread
-
-void
-set_region_thread1(LLViewerAssetStats::region_handle_t region_handle)
+void record_dequeue(LLViewerAssetType::EType at, bool with_http, bool is_temp)
 {
-	if (! gViewerAssetStatsThread1)
-		return;
+	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
 
-	gViewerAssetStatsThread1->setRegion(region_handle);
+	add(*sDequeued[int(eac)], 1);
 }
 
-void
-record_enqueue_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp)
+void record_response(LLViewerAssetType::EType at, bool with_http, bool is_temp, LLViewerAssetStats::duration_t duration)
 {
-	if (! gViewerAssetStatsThread1)
-		return;
+	const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp));
 
-	gViewerAssetStatsThread1->recordGetEnqueued(at, with_http, is_temp);
+	sample(*sResponse[int(eac)], LLTrace::Microseconds(duration));
 }
 
-void
-record_dequeue_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp)
+void record_avatar_stats()
 {
-	if (! gViewerAssetStatsThread1)
+	if (! gViewerAssetStats)
 		return;
 
-	gViewerAssetStatsThread1->recordGetDequeued(at, with_http, is_temp);
+	gViewerAssetStats->recordAvatarStats();
 }
 
-void
-record_response_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp, LLViewerAssetStats::duration_t duration)
+void init()
 {
-	if (! gViewerAssetStatsThread1)
-		return;
-
-	gViewerAssetStatsThread1->recordGetServiced(at, with_http, is_temp, duration);
-}
-
-
-void
-init()
-{
-	if (! gViewerAssetStatsMain)
+	if (! gViewerAssetStats)
 	{
-		gViewerAssetStatsMain = new LLViewerAssetStats();
-	}
-	if (! gViewerAssetStatsThread1)
-	{
-		gViewerAssetStatsThread1 = new LLViewerAssetStats();
+		gViewerAssetStats = new LLViewerAssetStats();
 	}
 }
 
 void
 cleanup()
 {
-	delete gViewerAssetStatsMain;
-	gViewerAssetStatsMain = 0;
-
-	delete gViewerAssetStatsThread1;
-	gViewerAssetStatsThread1 = 0;
+	delete gViewerAssetStats;
+	gViewerAssetStats = 0;
 }
 
 
 } // namespace LLViewerAssetStatsFF
 
 
-// ------------------------------------------------------
-// Local function definitions
-// ------------------------------------------------------
 
-namespace
+LLViewerAssetStats::AssetRequestType::AssetRequestType() 
+:	enqueued("enqueued"),
+	dequeued("dequeued"),
+	resp_count("resp_count"),
+	resp_min("resp_min"),
+	resp_max("resp_max"),
+	resp_mean("resp_mean")
+{}
+
+LLViewerAssetStats::FPSStats::FPSStats() 
+:	count("count"),
+	min("min"),
+	max("max"),
+	mean("mean")
+{}
+
+LLViewerAssetStats::RegionStats::RegionStats() 
+:	get_texture_temp_http("get_texture_temp_http"),
+	get_texture_temp_udp("get_texture_temp_udp"),
+	get_texture_non_temp_http("get_texture_non_temp_http"),
+	get_texture_non_temp_udp("get_texture_non_temp_udp"),
+	get_wearable_udp("get_wearable_udp"),
+	get_sound_udp("get_sound_udp"),
+	get_gesture_udp("get_gesture_udp"),
+	get_other("get_other"),
+	fps("fps"),
+	grid_x("grid_x"),
+	grid_y("grid_y"),
+	duration("duration")
+{}
+
+LLViewerAssetStats::AvatarRezState::AvatarRezState() 
+:	cloud("cloud"),
+	gray("gray"),
+	textured("textured")
+{}
+
+LLViewerAssetStats::AvatarInfo::AvatarInfo() 
+:	nearby("nearby"),
+	phase_stats("phase_stats")
 {
 
-LLViewerAssetStats::EViewerAssetCategories
-asset_type_to_category(const LLViewerAssetType::EType at, bool with_http, bool is_temp)
-{
-	// For statistical purposes, we divide GETs into several
-	// populations of asset fetches:
-	//  - textures which are de-prioritized in the asset system
-	//  - wearables (clothing, bodyparts) which directly affect
-	//    user experiences when they log in
-	//  - sounds
-	//  - gestures
-	//  - everything else.
-	//
-	llassert_always(50 == LLViewerAssetType::AT_COUNT);
-
-	// Multiple asset definitions are floating around so this requires some
-	// maintenance and attention.
-	static const LLViewerAssetStats::EViewerAssetCategories asset_to_bin_map[LLViewerAssetType::AT_COUNT] =
-		{
-			LLViewerAssetStats::EVACTextureTempHTTPGet,			// (0) AT_TEXTURE
-			LLViewerAssetStats::EVACSoundUDPGet,				// AT_SOUND
-			LLViewerAssetStats::EVACOtherGet,					// AT_CALLINGCARD
-			LLViewerAssetStats::EVACOtherGet,					// AT_LANDMARK
-			LLViewerAssetStats::EVACOtherGet,					// AT_SCRIPT
-			LLViewerAssetStats::EVACWearableUDPGet,				// AT_CLOTHING
-			LLViewerAssetStats::EVACOtherGet,					// AT_OBJECT
-			LLViewerAssetStats::EVACOtherGet,					// AT_NOTECARD
-			LLViewerAssetStats::EVACOtherGet,					// AT_CATEGORY
-			LLViewerAssetStats::EVACOtherGet,					// AT_ROOT_CATEGORY
-			LLViewerAssetStats::EVACOtherGet,					// (10) AT_LSL_TEXT
-			LLViewerAssetStats::EVACOtherGet,					// AT_LSL_BYTECODE
-			LLViewerAssetStats::EVACOtherGet,					// AT_TEXTURE_TGA
-			LLViewerAssetStats::EVACWearableUDPGet,				// AT_BODYPART
-			LLViewerAssetStats::EVACOtherGet,					// AT_TRASH
-			LLViewerAssetStats::EVACOtherGet,					// AT_SNAPSHOT_CATEGORY
-			LLViewerAssetStats::EVACOtherGet,					// AT_LOST_AND_FOUND
-			LLViewerAssetStats::EVACSoundUDPGet,				// AT_SOUND_WAV
-			LLViewerAssetStats::EVACOtherGet,					// AT_IMAGE_TGA
-			LLViewerAssetStats::EVACOtherGet,					// AT_IMAGE_JPEG
-			LLViewerAssetStats::EVACGestureUDPGet,				// (20) AT_ANIMATION
-			LLViewerAssetStats::EVACGestureUDPGet,				// AT_GESTURE
-			LLViewerAssetStats::EVACOtherGet,					// AT_SIMSTATE
-			LLViewerAssetStats::EVACOtherGet,					// AT_FAVORITE
-			LLViewerAssetStats::EVACOtherGet,					// AT_LINK
-			LLViewerAssetStats::EVACOtherGet,					// AT_LINK_FOLDER
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// (30)
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// (40)
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					//
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// 
-			LLViewerAssetStats::EVACOtherGet,					// AT_MESH
-																// (50)
-		};
-	
-	if (at < 0 || at >= LLViewerAssetType::AT_COUNT)
-	{
-		return LLViewerAssetStats::EVACOtherGet;
-	}
-	LLViewerAssetStats::EViewerAssetCategories ret(asset_to_bin_map[at]);
-	if (LLViewerAssetStats::EVACTextureTempHTTPGet == ret)
-	{
-		// Indexed with [is_temp][with_http]
-		static const LLViewerAssetStats::EViewerAssetCategories texture_bin_map[2][2] =
-			{
-				{
-					LLViewerAssetStats::EVACTextureNonTempUDPGet,
-					LLViewerAssetStats::EVACTextureNonTempHTTPGet,
-				},
-				{
-					LLViewerAssetStats::EVACTextureTempUDPGet,
-					LLViewerAssetStats::EVACTextureTempHTTPGet,
-				}
-			};
-
-		ret = texture_bin_map[is_temp][with_http];
-	}
-	return ret;
 }
 
-} // anonymous namespace
+LLViewerAssetStats::AssetStats::AssetStats() 
+:	regions("regions"),
+	duration("duration"),
+	avatar("avatar"),
+	session_id("session_id"),
+	agent_id("agent_id"),
+	message("message"),
+	sequence("sequence"),
+	initial("initial"),
+	break_("break")
+{}
diff --git a/indra/newview/llviewerassetstats.h b/indra/newview/llviewerassetstats.h
index 8319752230..5b25d791a9 100644
--- a/indra/newview/llviewerassetstats.h
+++ b/indra/newview/llviewerassetstats.h
@@ -37,6 +37,7 @@
 #include "llsimplestat.h"
 #include "llsd.h"
 #include "llvoavatar.h"
+#include "lltrace.h"
 
 /**
  * @class LLViewerAssetStats
@@ -73,23 +74,9 @@
  * LLViewerAssetStatsFF is provided for conditional test-and-call
  * operations.
  */
-class LLViewerAssetStats
+class LLViewerAssetStats : public LLStopWatchControlsMixin<LLViewerAssetStats>
 {
 public:
-	enum EViewerAssetCategories
-	{
-		EVACTextureTempHTTPGet,			//< Texture GETs - temp/baked, HTTP
-		EVACTextureTempUDPGet,			//< Texture GETs - temp/baked, UDP
-		EVACTextureNonTempHTTPGet,		//< Texture GETs - perm, HTTP
-		EVACTextureNonTempUDPGet,		//< Texture GETs - perm, UDP
-		EVACWearableUDPGet,				//< Wearable GETs
-		EVACSoundUDPGet,				//< Sound GETs
-		EVACGestureUDPGet,				//< Gesture GETs
-		EVACOtherGet,					//< Other GETs
-		
-		EVACCount						// Must be last
-	};
-
 	/**
 	 * Type for duration and other time values in the metrics.  Selected
 	 * for compatibility with the pre-existing timestamp on the texture
@@ -104,64 +91,93 @@ public:
 	 */
 	typedef U64 region_handle_t;
 
-	/**
-	 * @brief Collected data for a single region visited by the avatar.
-	 *
-	 * Fairly simple, for each asset bin enumerated above a count
-	 * of enqueue and dequeue operations and simple stats on response
-	 * times for completed requests.
-	 */
-	class PerRegionStats : public LLRefCount
+	struct AssetRequestType : public LLInitParam::Block<AssetRequestType>
 	{
-	public:
-		PerRegionStats(const region_handle_t region_handle)
-			: LLRefCount(),
-			  mRegionHandle(region_handle)
-			{
-				reset();
-			}
-
-		PerRegionStats(const PerRegionStats & src)
-			: LLRefCount(),
-			  mRegionHandle(src.mRegionHandle),
-			  mTotalTime(src.mTotalTime),
-			  mStartTimestamp(src.mStartTimestamp),
-			  mFPS(src.mFPS)
-			{
-				for (int i = 0; i < LL_ARRAY_SIZE(mRequests); ++i)
-				{
-					mRequests[i] = src.mRequests[i];
-				}
-			}
-
-		// Default assignment and destructor are correct.
-		
-		void reset();
-
-		void merge(const PerRegionStats & src);
-		
-		// Apply current running time to total and reset start point.
-		// Return current timestamp as a convenience.
-		void accumulateTime(duration_t now);
-		
-	public:
-		region_handle_t		mRegionHandle;
-		duration_t			mTotalTime;
-		duration_t			mStartTimestamp;
-		LLSimpleStatMMM<>	mFPS;
-		
-		struct prs_group
-		{
-			LLSimpleStatCounter			mEnqueued;
-			LLSimpleStatCounter			mDequeued;
-			LLSimpleStatMMM<duration_t>	mResponse;
-		}
-		mRequests [EVACCount];
+		Mandatory<S32>	enqueued,
+						dequeued,
+						resp_count;
+		Mandatory<F64>	resp_min,
+						resp_max,
+						resp_mean;
+	
+		AssetRequestType();
+	};
+
+	struct FPSStats : public LLInitParam::Block<FPSStats>
+	{
+		Mandatory<S32>	count;
+		Mandatory<F64>	min,
+						max,
+						mean;
+		FPSStats();
+	};
+
+	struct RegionStats : public LLInitParam::Block<RegionStats>
+	{
+		Optional<AssetRequestType>	get_texture_temp_http,
+									get_texture_temp_udp,
+									get_texture_non_temp_http,
+									get_texture_non_temp_udp,
+									get_wearable_udp,
+									get_sound_udp,
+									get_gesture_udp,
+									get_other;
+		Optional<FPSStats>			fps;
+		Optional<S32>				grid_x,
+									grid_y;
+		Optional<F64>				duration;
+
+		RegionStats();
+	};
+
+	struct AvatarRezState : public LLInitParam::Block<AvatarRezState>
+	{
+		Mandatory<S32>	cloud,
+						gray,
+						textured;
+		AvatarRezState();
+	};
+
+	struct AvatarPhaseStats : public LLInitParam::Block<AvatarPhaseStats>
+	{
+		Mandatory<LLSD>	cloud,
+						cloud_or_gray;
+
+		AvatarPhaseStats()
+		:	cloud("cloud"),
+			cloud_or_gray("cloud-or-gray")
+		{}
+	};
+
+	struct AvatarInfo : public LLInitParam::Block<AvatarInfo>
+	{
+		Optional<AvatarRezState> nearby;
+		Optional<AvatarPhaseStats> phase_stats;
+
+		AvatarInfo();
+	};
+
+	struct AssetStats : public LLInitParam::Block<AssetStats>
+	{
+		Multiple<RegionStats>	regions;
+		Mandatory<F64>			duration;
+		Mandatory<AvatarInfo>	avatar;
+
+		Mandatory<LLUUID>		session_id,
+								agent_id;
+
+		Mandatory<std::string>	message;
+		Mandatory<S32>			sequence;
+		Mandatory<bool>			initial,
+								break_;
+
+		AssetStats();
 	};
 
 public:
 	LLViewerAssetStats();
 	LLViewerAssetStats(const LLViewerAssetStats &);
+
 	// Default destructor is correct.
 	LLViewerAssetStats & operator=(const LLViewerAssetStats &);			// Not defined
 
@@ -174,88 +190,35 @@ public:
 	// collection calls.
 	void setRegion(region_handle_t region_handle);
 
-	// Asset GET Requests
-	void recordGetEnqueued(LLViewerAssetType::EType at, bool with_http, bool is_temp);
-	void recordGetDequeued(LLViewerAssetType::EType at, bool with_http, bool is_temp);
-	void recordGetServiced(LLViewerAssetType::EType at, bool with_http, bool is_temp, duration_t duration);
-
-	// Frames-Per-Second Samples
-	void recordFPS(F32 fps);
-
 	// Avatar-related statistics
 	void recordAvatarStats();
 
-	// Merge a source instance into a destination instance.  This is
-	// conceptually an 'operator+=()' method:
-	// - counts are added
-	// - minimums are min'd
-	// - maximums are max'd
-	// - other scalars are ignored ('this' wins)
-	//
-	void merge(const LLViewerAssetStats & src);
-	
+	// gather latest metrics data
+	// call from main thread
+	void updateStats();
+
 	// Retrieve current metrics for all visited regions (NULL region UUID/handle excluded)
-    // Returned LLSD is structured as follows:
-	//
-	// &stats_group = {
-	//   enqueued   : int,
-	//   dequeued   : int,
-	//   resp_count : int,
-	//   resp_min   : float,
-	//   resp_max   : float,
-	//   resp_mean  : float
-	// }
-	//
-	// &mmm_group = {
-	//   count : int,
-	//   min   : float,
-	//   max   : float,
-	//   mean  : float
-	// }
-	//
-	// {
-	//   duration: int
-	//   regions: {
-	//     $: {			// Keys are strings of the region's handle in hex
-	//       duration:                 : int,
-	//		 fps:					   : &mmm_group,
-	//       get_texture_temp_http     : &stats_group,
-	//       get_texture_temp_udp      : &stats_group,
-	//       get_texture_non_temp_http : &stats_group,
-	//       get_texture_non_temp_udp  : &stats_group,
-	//       get_wearable_udp          : &stats_group,
-	//       get_sound_udp             : &stats_group,
-	//       get_gesture_udp           : &stats_group,
-	//       get_other                 : &stats_group
-	//     }
-	//   }
-	// }
-	//
-	// @param	compact_output		If true, omits from conversion any mmm_block
-	//								or stats_block that would contain all zero data.
-	//								Useful for transmission when the receiver knows
-	//								what is expected and will assume zero for missing
-	//								blocks.
+    // Uses AssetStats structure seen above
+	void getStats(AssetStats& stats, bool compact_output);
 	LLSD asLLSD(bool compact_output);
 
 protected:
-	typedef std::map<region_handle_t, LLPointer<PerRegionStats> > PerRegionContainer;
+	void handleStart();
+	void handleStop();
+	void handleReset();
+
+	typedef std::map<region_handle_t, LLTrace::Recording > PerRegionRecordingContainer;
 
 	// Region of the currently-active region.  Always valid but may
 	// be zero after construction or when explicitly set.  Unchanged
 	// by a reset() call.
 	region_handle_t mRegionHandle;
 
-	// Pointer to metrics collection for currently-active region.  Always
-	// valid and unchanged after reset() though contents will be changed.
-	// Always points to a collection contained in mRegionStats.
-	LLPointer<PerRegionStats> mCurRegionStats;
+	// Pointer to metrics collection for currently-active region.  
+	LLTrace::Recording*			mCurRecording;
 
 	// Metrics data for all regions during one collection cycle
-	PerRegionContainer mRegionStats;
-
-	// Time of last reset
-	duration_t mResetTimestamp;
+	PerRegionRecordingContainer mRegionRecordings;
 
 	// Nearby avatar stats
 	std::vector<S32> mAvatarRezStates;
@@ -277,12 +240,24 @@ protected:
  *  - Main:  main() program execution thread
  *  - Thread1:  TextureFetch worker thread
  */
-extern LLViewerAssetStats * gViewerAssetStatsMain;
-
-extern LLViewerAssetStats * gViewerAssetStatsThread1;
+extern LLViewerAssetStats * gViewerAssetStats;
 
 namespace LLViewerAssetStatsFF
 {
+	enum EViewerAssetCategories
+	{
+		EVACTextureTempHTTPGet,			//< Texture GETs - temp/baked, HTTP
+		EVACTextureTempUDPGet,			//< Texture GETs - temp/baked, UDP
+		EVACTextureNonTempHTTPGet,		//< Texture GETs - perm, HTTP
+		EVACTextureNonTempUDPGet,		//< Texture GETs - perm, UDP
+		EVACWearableUDPGet,				//< Wearable GETs
+		EVACSoundUDPGet,				//< Sound GETs
+		EVACGestureUDPGet,				//< Gesture GETs
+		EVACOtherGet,					//< Other GETs
+
+		EVACCount						// Must be last
+	};
+
 /**
  * @brief Allocation and deallocation of globals.
  *
@@ -307,31 +282,17 @@ inline LLViewerAssetStats::duration_t get_timestamp()
 /**
  * Region context, event and duration loggers for the Main thread.
  */
-void set_region_main(LLViewerAssetStats::region_handle_t region_handle);
+void set_region(LLViewerAssetStats::region_handle_t region_handle);
 
-void record_enqueue_main(LLViewerAssetType::EType at, bool with_http, bool is_temp);
+void record_enqueue(LLViewerAssetType::EType at, bool with_http, bool is_temp);
 
-void record_dequeue_main(LLViewerAssetType::EType at, bool with_http, bool is_temp);
+void record_dequeue(LLViewerAssetType::EType at, bool with_http, bool is_temp);
 
-void record_response_main(LLViewerAssetType::EType at, bool with_http, bool is_temp,
+void record_response(LLViewerAssetType::EType at, bool with_http, bool is_temp,
 						  LLViewerAssetStats::duration_t duration);
 
-void record_fps_main(F32 fps);
-
 void record_avatar_stats();
 
-/**
- * Region context, event and duration loggers for Thread 1.
- */
-void set_region_thread1(LLViewerAssetStats::region_handle_t region_handle);
-
-void record_enqueue_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp);
-
-void record_dequeue_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp);
-
-void record_response_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp,
-						  LLViewerAssetStats::duration_t duration);
-
 } // namespace LLViewerAssetStatsFF
 
 #endif // LL_LLVIEWERASSETSTATUS_H
diff --git a/indra/newview/llviewerassetstorage.cpp b/indra/newview/llviewerassetstorage.cpp
index d042f62830..6f41abbd8a 100644
--- a/indra/newview/llviewerassetstorage.cpp
+++ b/indra/newview/llviewerassetstorage.cpp
@@ -73,8 +73,8 @@ protected:
 			{
 				// Okay, it appears this request was used for useful things.  Record
 				// the expected dequeue and duration of request processing.
-				LLViewerAssetStatsFF::record_dequeue_main(mType, false, false);
-				LLViewerAssetStatsFF::record_response_main(mType, false, false,
+				LLViewerAssetStatsFF::record_dequeue(mType, false, false);
+				LLViewerAssetStatsFF::record_response(mType, false, false,
 														   (LLViewerAssetStatsFF::get_timestamp()
 															- mMetricsStartTime));
 				mMetricsStartTime = 0;
@@ -373,7 +373,7 @@ void LLViewerAssetStorage::_queueDataRequest(
 			LLTransferTargetChannel *ttcp = gTransferManager.getTargetChannel(mUpstreamHost, LLTCT_ASSET);
 			ttcp->requestTransfer(spa, tpvf, 100.f + (is_priority ? 1.f : 0.f));
 
-			LLViewerAssetStatsFF::record_enqueue_main(atype, false, false);
+			LLViewerAssetStatsFF::record_enqueue(atype, false, false);
 		}
 	}
 	else
diff --git a/indra/newview/llviewercamera.cpp b/indra/newview/llviewercamera.cpp
index a437a8b3b5..9ca5f07f35 100644
--- a/indra/newview/llviewercamera.cpp
+++ b/indra/newview/llviewercamera.cpp
@@ -49,10 +49,14 @@
 #include "llglheaders.h"
 #include "llquaternion.h"
 #include "llwindow.h"			// getPixelAspectRatio()
+#include "lltracerecording.h"
 
 // System includes
 #include <iomanip> // for setprecision
 
+LLTrace::CountStatHandle<> LLViewerCamera::sVelocityStat("camera_velocity");
+LLTrace::CountStatHandle<> LLViewerCamera::sAngularVelocityStat("camera_angular_velocity");
+
 U32 LLViewerCamera::sCurCameraID = LLViewerCamera::CAMERA_WORLD;
 
 //glu pick matrix implementation borrowed from Mesa3D
@@ -163,11 +167,11 @@ void LLViewerCamera::updateCameraLocation(const LLVector3 &center,
 	F32 drot;
 	rotation.getAngleAxis(&drot, &x, &y, &z);
 
-	mVelocityStat.addValue(dpos);
-	mAngularVelocityStat.addValue(drot);
+	add(sVelocityStat, dpos);
+	add(sAngularVelocityStat, drot);
 	
-	mAverageSpeed = mVelocityStat.getMeanPerSec() ;
-	mAverageAngularSpeed = mAngularVelocityStat.getMeanPerSec() ;
+	mAverageSpeed = LLTrace::get_frame_recording().getPeriodMeanPerSec(sVelocityStat);
+	mAverageAngularSpeed = LLTrace::get_frame_recording().getPeriodMeanPerSec(sAngularVelocityStat);
 	mCosHalfCameraFOV = cosf(0.5f * getView() * llmax(1.0f, getAspect()));
 
 	// update pixel meter ratio using default fov, not modified one
diff --git a/indra/newview/llviewercamera.h b/indra/newview/llviewercamera.h
index b857c7fe89..ffec284f72 100644
--- a/indra/newview/llviewercamera.h
+++ b/indra/newview/llviewercamera.h
@@ -29,10 +29,10 @@
 
 #include "llcamera.h"
 #include "llsingleton.h"
-#include "llstat.h"
 #include "lltimer.h"
 #include "m4math.h"
 #include "llcoord.h"
+#include "lltrace.h"
 
 class LLViewerObject;
 
@@ -101,8 +101,8 @@ public:
 	BOOL projectPosAgentToScreenEdge(const LLVector3 &pos_agent, LLCoordGL &out_point) const;
 
 	const LLVector3* getVelocityDir() const {return &mVelocityDir;}
-	LLStat *getVelocityStat() { return &mVelocityStat; }
-	LLStat *getAngularVelocityStat() { return &mAngularVelocityStat; }
+	static LLTrace::CountStatHandle<>* getVelocityStat()		   {return &sVelocityStat; }
+	static LLTrace::CountStatHandle<>* getAngularVelocityStat()  {return &sAngularVelocityStat; }
 	F32     getCosHalfFov() {return mCosHalfCameraFOV;}
 	F32     getAverageSpeed() {return mAverageSpeed ;}
 	F32     getAverageAngularSpeed() {return mAverageAngularSpeed;}
@@ -117,9 +117,9 @@ public:
 	F32 getDefaultFOV() { return mCameraFOVDefault; }
 
 	BOOL cameraUnderWater() const;
+	BOOL areVertsVisible(LLViewerObject* volumep, BOOL all_verts);
 
 	const LLVector3 &getPointOfInterest() { return mLastPointOfInterest; }
-	BOOL areVertsVisible(LLViewerObject* volumep, BOOL all_verts);
 	F32 getPixelMeterRatio() const				{ return mPixelMeterRatio; }
 	S32 getScreenPixelArea() const				{ return mScreenPixelArea; }
 
@@ -130,12 +130,12 @@ public:
 protected:
 	void calcProjection(const F32 far_distance) const;
 
-	LLStat mVelocityStat;
-	LLStat mAngularVelocityStat;
+	static LLTrace::CountStatHandle<> sVelocityStat;
+	static LLTrace::CountStatHandle<> sAngularVelocityStat;
+
 	LLVector3 mVelocityDir ;
 	F32       mAverageSpeed ;
 	F32       mAverageAngularSpeed ;
-
 	mutable LLMatrix4	mProjectionMatrix;	// Cache of perspective matrix
 	mutable LLMatrix4	mModelviewMatrix;
 	F32					mCameraFOVDefault;
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index ffeea2f4df..0889c3ec6c 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -77,6 +77,7 @@
 #include "llwlparammanager.h"
 #include "llwaterparammanager.h"
 #include "llpostprocess.h"
+#include "llscenemonitor.h"
 
 extern LLPointer<LLViewerTexture> gStartTexture;
 extern bool gShiftFrame;
@@ -607,7 +608,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 		{
 			LLFastTimer t(FTM_DISPLAY_UPDATE_GEOM);
-			const F32 max_geom_update_time = 0.005f*10.f*gFrameIntervalSeconds; // 50 ms/second update time
+			const F32 max_geom_update_time = 0.005f*10.f*gFrameIntervalSeconds.value(); // 50 ms/second update time
 			gPipeline.createObjects(max_geom_update_time);
 			gPipeline.processPartitionQ();
 			gPipeline.updateGeom(max_geom_update_time);
@@ -748,8 +749,10 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			
 			{
 				LLFastTimer t(FTM_IMAGE_UPDATE_CLASS);
-				LLViewerTexture::updateClass(LLViewerCamera::getInstance()->getVelocityStat()->getMean(),
-											LLViewerCamera::getInstance()->getAngularVelocityStat()->getMean());
+				LLTrace::CountStatHandle<>* velocity_stat = LLViewerCamera::getVelocityStat();
+				LLTrace::CountStatHandle<>* angular_velocity_stat = LLViewerCamera::getAngularVelocityStat();
+				LLViewerTexture::updateClass(LLTrace::get_frame_recording().getPeriodMeanPerSec(*velocity_stat),
+											LLTrace::get_frame_recording().getPeriodMeanPerSec(*angular_velocity_stat));
 			}
 
 			
@@ -760,7 +763,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 			{
 				LLFastTimer t(FTM_IMAGE_UPDATE_LIST);
-				F32 max_image_decode_time = 0.050f*gFrameIntervalSeconds; // 50 ms/second decode time
+				F32 max_image_decode_time = 0.050f*gFrameIntervalSeconds.value(); // 50 ms/second decode time
 				max_image_decode_time = llclamp(max_image_decode_time, 0.002f, 0.005f ); // min 2ms/frame, max 5ms/frame)
 				gTextureList.updateImages(max_image_decode_time);
 			}
@@ -989,6 +992,11 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 		LLPipeline::sUnderWaterRender = FALSE;
 
+		{
+			//capture the frame buffer.
+			LLSceneMonitor::getInstance()->capture();
+		}
+
 		LLAppViewer::instance()->pingMainloopTimeout("Display:RenderUI");
 		if (!for_snapshot)
 		{
@@ -1033,7 +1041,7 @@ void render_hud_attachments()
 	// clamp target zoom level to reasonable values
 	gAgentCamera.mHUDTargetZoom = llclamp(gAgentCamera.mHUDTargetZoom, 0.1f, 1.f);
 	// smoothly interpolate current zoom level
-	gAgentCamera.mHUDCurZoom = lerp(gAgentCamera.mHUDCurZoom, gAgentCamera.mHUDTargetZoom, LLCriticalDamp::getInterpolant(0.03f));
+	gAgentCamera.mHUDCurZoom = lerp(gAgentCamera.mHUDCurZoom, gAgentCamera.mHUDTargetZoom, LLSmoothInterpolation::getInterpolant(0.03f));
 
 	if (LLPipeline::sShowHUDAttachments && !gDisconnected && setup_hud_matrices())
 	{
@@ -1222,6 +1230,15 @@ void render_ui(F32 zoom_factor, int subfield)
 		glh_set_current_modelview(glh_copy_matrix(gGLLastModelView));
 	}
 	
+	if(LLSceneMonitor::getInstance()->needsUpdate())
+	{
+		gGL.pushMatrix();
+		gViewerWindow->setup2DRender();
+		LLSceneMonitor::getInstance()->compare();
+		gViewerWindow->setup3DRender();
+		gGL.popMatrix();
+	}
+
 	{
 		BOOL to_texture = gPipeline.canUseVertexShaders() &&
 							LLPipeline::sRenderGlow;
diff --git a/indra/newview/llviewerfloaterreg.cpp b/indra/newview/llviewerfloaterreg.cpp
index 1f7cf0cdd4..792c55441d 100644
--- a/indra/newview/llviewerfloaterreg.cpp
+++ b/indra/newview/llviewerfloaterreg.cpp
@@ -28,64 +28,62 @@
 #include "llviewerprecompiledheaders.h"
 
 #include "llfloaterreg.h"
-
 #include "llviewerfloaterreg.h"
-#include "llfloaterautoreplacesettings.h"
-#include "llcompilequeue.h"
+
 #include "llcallfloater.h"
+#include "llcommandhandler.h"
+#include "llcompilequeue.h"
 #include "llfasttimerview.h"
 #include "llfloaterabout.h"
 #include "llfloaterauction.h"
+#include "llfloaterautoreplacesettings.h"
 #include "llfloateravatar.h"
 #include "llfloateravatarpicker.h"
 #include "llfloateravatartextures.h"
 #include "llfloaterbeacons.h"
 #include "llfloaterbuildoptions.h"
+#include "llfloaterbulkpermission.h"
+#include "llfloaterbump.h"
 #include "llfloaterbuy.h"
 #include "llfloaterbuycontents.h"
 #include "llfloaterbuycurrency.h"
 #include "llfloaterbuycurrencyhtml.h"
 #include "llfloaterbuyland.h"
-#include "llfloaterbulkpermission.h"
-#include "llfloaterbump.h"
 #include "llfloaterbvhpreview.h"
 #include "llfloatercamera.h"
 #include "llfloaterdeleteenvpreset.h"
+#include "llfloaterdestinations.h"
 #include "llfloaterdisplayname.h"
 #include "llfloatereditdaycycle.h"
 #include "llfloatereditsky.h"
 #include "llfloatereditwater.h"
 #include "llfloaterenvironmentsettings.h"
 #include "llfloaterevent.h"
-#include "llfloaterdestinations.h"
 #include "llfloaterfonttest.h"
 #include "llfloatergesture.h"
 #include "llfloatergodtools.h"
 #include "llfloatergroups.h"
 #include "llfloaterhardwaresettings.h"
 #include "llfloaterhelpbrowser.h"
-#include "llfloaterwebcontent.h"
-#include "llfloaterwebprofile.h"
-#include "llfloatermediasettings.h"
 #include "llfloaterhud.h"
 #include "llfloaterimagepreview.h"
-#include "llimfloater.h"
 #include "llfloaterinspect.h"
 #include "llfloaterinventory.h"
 #include "llfloaterjoystick.h"
-#include "llfloaterlagmeter.h"
 #include "llfloaterland.h"
 #include "llfloaterlandholdings.h"
 #include "llfloatermap.h"
+#include "llfloatermediasettings.h"
 #include "llfloatermemleak.h"
+#include "llfloatermodelpreview.h"
 #include "llfloaternamedesc.h"
 #include "llfloaternotificationsconsole.h"
 #include "llfloaterobjectweights.h"
 #include "llfloateropenobject.h"
 #include "llfloateroutbox.h"
 #include "llfloaterpathfindingcharacters.h"
-#include "llfloaterpathfindinglinksets.h"
 #include "llfloaterpathfindingconsole.h"
+#include "llfloaterpathfindinglinksets.h"
 #include "llfloaterpay.h"
 #include "llfloaterperms.h"
 #include "llfloaterpostprocess.h"
@@ -94,6 +92,7 @@
 #include "llfloaterregiondebugconsole.h"
 #include "llfloaterregioninfo.h"
 #include "llfloaterreporter.h"
+#include "llfloatersceneloadstats.h"
 #include "llfloaterscriptdebug.h"
 #include "llfloaterscriptlimits.h"
 #include "llfloatersearch.h"
@@ -108,15 +107,18 @@
 #include "llfloatertestlistview.h"
 #include "llfloatertexturefetchdebugger.h"
 #include "llfloatertools.h"
-#include "llfloatertos.h"
 #include "llfloatertopobjects.h"
+#include "llfloatertos.h"
 #include "llfloatertoybox.h"
 #include "llfloatertranslationsettings.h"
 #include "llfloateruipreview.h"
 #include "llfloatervoiceeffect.h"
+#include "llfloaterwebcontent.h"
+#include "llfloaterwebprofile.h"
 #include "llfloaterwhitelistentry.h"
 #include "llfloaterwindowsize.h"
 #include "llfloaterworldmap.h"
+#include "llimfloater.h"
 #include "llimfloatercontainer.h"
 #include "llinspectavatar.h"
 #include "llinspectgroup.h"
@@ -125,6 +127,7 @@
 #include "llinspecttoast.h"
 #include "llmoveview.h"
 #include "llnearbychat.h"
+#include "llnearbychatbar.h"
 #include "llpanelblockedlist.h"
 #include "llpanelclassified.h"
 #include "llpreviewanim.h"
@@ -133,11 +136,8 @@
 #include "llpreviewscript.h"
 #include "llpreviewsound.h"
 #include "llpreviewtexture.h"
-#include "llsyswellwindow.h"
 #include "llscriptfloater.h"
-#include "llfloatermodelpreview.h"
-#include "llcommandhandler.h"
-#include "llnearbychatbar.h"
+#include "llsyswellwindow.h"
 
 // *NOTE: Please add files in alphabetical order to keep merges easy.
 
@@ -227,7 +227,6 @@ void LLViewerFloaterReg::registerFloaters()
 	LLNotificationsUI::registerFloater();
 	LLFloaterDisplayNameUtil::registerFloater();
 	
-	LLFloaterReg::add("lagmeter", "floater_lagmeter.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterLagMeter>);
 	LLFloaterReg::add("land_holdings", "floater_land_holdings.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterLandHoldings>);
 	
 	LLFloaterReg::add("mem_leaking", "floater_mem_leaking.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterMemLeak>);
@@ -300,6 +299,7 @@ void LLViewerFloaterReg::registerFloaters()
 	LLFloaterReg::add("sound_devices", "floater_sound_devices.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterSoundDevices>);
 	LLFloaterReg::add("stats", "floater_stats.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloater>);
 	LLFloaterReg::add("start_queue", "floater_script_queue.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterRunQueue>);
+	LLFloaterReg::add("scene_load_stats", "floater_scene_load_stats.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterSceneLoadStats>);
 	LLFloaterReg::add("stop_queue", "floater_script_queue.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterNotRunQueue>);
 	LLFloaterReg::add("snapshot", "floater_snapshot.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterSnapshot>);
 	LLFloaterReg::add("search", "floater_search.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterSearch>);
diff --git a/indra/newview/llviewerjoystick.cpp b/indra/newview/llviewerjoystick.cpp
index f6e840adcd..f4155df4d1 100644
--- a/indra/newview/llviewerjoystick.cpp
+++ b/indra/newview/llviewerjoystick.cpp
@@ -501,7 +501,7 @@ void LLViewerJoystick::moveObjects(bool reset)
 	};
 
 	F32 cur_delta[6];
-	F32 time = gFrameIntervalSeconds;
+	F32 time = gFrameIntervalSeconds.value();
 
 	// avoid making ridicously big movements if there's a big drop in fps 
 	if (time > .2f)
@@ -665,7 +665,7 @@ void LLViewerJoystick::moveAvatar(bool reset)
 	};
 
 	// time interval in seconds between this frame and the previous
-	F32 time = gFrameIntervalSeconds;
+	F32 time = gFrameIntervalSeconds.value();
 
 	// avoid making ridicously big movements if there's a big drop in fps 
 	if (time > .2f)
@@ -878,7 +878,7 @@ void LLViewerJoystick::moveFlycam(bool reset)
 		gSavedSettings.getF32("FlycamAxisDeadZone6")
 	};
 
-	F32 time = gFrameIntervalSeconds;
+	F32 time = gFrameIntervalSeconds.value();
 
 	// avoid making ridiculously big movements if there's a big drop in fps 
 	if (time > .2f)
diff --git a/indra/newview/llviewerkeyboard.cpp b/indra/newview/llviewerkeyboard.cpp
index 1aa9fd8a45..f5d3341c66 100644
--- a/indra/newview/llviewerkeyboard.cpp
+++ b/indra/newview/llviewerkeyboard.cpp
@@ -160,6 +160,11 @@ void agent_push_backward( EKeystate s )
 		camera_move_backward(s);
 		return;
 	}
+	else if (gAgentAvatarp->isSitting())
+	{
+		gAgentCamera.changeCameraToThirdPerson();
+		return;
+	}
 	agent_push_forwardbackward(s, -1, LLAgent::DOUBLETAP_BACKWARD);
 }
 
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 93e4f4428a..25907dcb52 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -122,6 +122,7 @@
 #include "llwindow.h"
 #include "llpathfindingmanager.h"
 #include "boost/unordered_map.hpp"
+#include "llscenemonitor.h"
 
 using namespace LLVOAvatarDefines;
 
@@ -527,7 +528,10 @@ class LLAdvancedToggleConsole : public view_listener_t
 		{
 			toggle_visibility( (void*)gSceneView);
 		}
-
+		else if ("scene monitor" == console_type)
+		{
+			toggle_visibility( (void*)gSceneMonitorView);
+		}
 #if MEM_TRACK_MEM
 		else if ("memory view" == console_type)
 		{
@@ -555,9 +559,9 @@ class LLAdvancedCheckConsole : public view_listener_t
 		{
 			new_value = LLFloaterReg::instanceVisible("fast_timers");
 		}
-		else if ("scene view" == console_type)
+		else if ("scene monitor" == console_type)
 		{
-			new_value = get_visibility( (void*) gSceneView);
+			new_value = get_visibility( (void*) gSceneMonitorView);
 		}
 #if MEM_TRACK_MEM
 		else if ("memory view" == console_type)
@@ -3959,24 +3963,24 @@ class LLViewToggleUI : public view_listener_t
 	{
 		if(gAgentCamera.getCameraMode() != CAMERA_MODE_MOUSELOOK)
 		{
-			LLNotification::Params params("ConfirmHideUI");
-			params.functor.function(boost::bind(&LLViewToggleUI::confirm, this, _1, _2));
-			LLSD substitutions;
+		LLNotification::Params params("ConfirmHideUI");
+		params.functor.function(boost::bind(&LLViewToggleUI::confirm, this, _1, _2));
+		LLSD substitutions;
 #if LL_DARWIN
-			substitutions["SHORTCUT"] = "Cmd+Shift+U";
+		substitutions["SHORTCUT"] = "Cmd+Shift+U";
 #else
-			substitutions["SHORTCUT"] = "Ctrl+Shift+U";
+		substitutions["SHORTCUT"] = "Ctrl+Shift+U";
 #endif
-			params.substitutions = substitutions;
+		params.substitutions = substitutions;
 			if (!gSavedSettings.getBOOL("HideUIControls"))
-			{
-				// hiding, so show notification
-				LLNotifications::instance().add(params);
-			}
-			else
-			{
-				LLNotifications::instance().forceResponse(params, 0);
-			}
+		{
+			// hiding, so show notification
+			LLNotifications::instance().add(params);
+		}
+		else
+		{
+			LLNotifications::instance().forceResponse(params, 0);
+		}
 		}
 		return true;
 	}
@@ -4023,72 +4027,6 @@ void handle_duplicate_in_place(void*)
 	LLSelectMgr::getInstance()->selectDuplicate(offset, TRUE);
 }
 
-/* dead code 30-apr-2008
-void handle_deed_object_to_group(void*)
-{
-	LLUUID group_id;
-	
-	LLSelectMgr::getInstance()->selectGetGroup(group_id);
-	LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, FALSE);
-	LLViewerStats::getInstance()->incStat(LLViewerStats::ST_RELEASE_COUNT);
-}
-
-BOOL enable_deed_object_to_group(void*)
-{
-	if(LLSelectMgr::getInstance()->getSelection()->isEmpty()) return FALSE;
-	LLPermissions perm;
-	LLUUID group_id;
-
-	if (LLSelectMgr::getInstance()->selectGetGroup(group_id) &&
-		gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED) &&
-		LLSelectMgr::getInstance()->selectGetPermissions(perm) &&
-		perm.deedToGroup(gAgent.getID(), group_id))
-	{
-		return TRUE;
-	}
-	return FALSE;
-}
-
-*/
-
-
-/*
- * No longer able to support viewer side manipulations in this way
- *
-void god_force_inv_owner_permissive(LLViewerObject* object,
-									LLInventoryObject::object_list_t* inventory,
-									S32 serial_num,
-									void*)
-{
-	typedef std::vector<LLPointer<LLViewerInventoryItem> > item_array_t;
-	item_array_t items;
-
-	LLInventoryObject::object_list_t::const_iterator inv_it = inventory->begin();
-	LLInventoryObject::object_list_t::const_iterator inv_end = inventory->end();
-	for ( ; inv_it != inv_end; ++inv_it)
-	{
-		if(((*inv_it)->getType() != LLAssetType::AT_CATEGORY))
-		{
-			LLInventoryObject* obj = *inv_it;
-			LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem((LLViewerInventoryItem*)obj);
-			LLPermissions perm(new_item->getPermissions());
-			perm.setMaskBase(PERM_ALL);
-			perm.setMaskOwner(PERM_ALL);
-			new_item->setPermissions(perm);
-			items.push_back(new_item);
-		}
-	}
-	item_array_t::iterator end = items.end();
-	item_array_t::iterator it;
-	for(it = items.begin(); it != end; ++it)
-	{
-		// since we have the inventory item in the callback, it should not
-		// invalidate iteration through the selection manager.
-		object->updateInventory((*it), TASK_INVENTORY_ITEM_KEY, false);
-	}
-}
-*/
-
 void handle_object_owner_permissive(void*)
 {
 	// only send this if they're a god.
@@ -7387,7 +7325,7 @@ void handle_dump_avatar_local_textures(void*)
 
 void handle_dump_timers()
 {
-	LLFastTimer::dumpCurTimes();
+	LLTrace::TimeBlock::dumpCurTimes();
 }
 
 void handle_debug_avatar_textures(void*)
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index be78603e2d..b7282a8493 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -1096,17 +1096,17 @@ void upload_new_resource(
 	
 	if( LLAssetType::AT_SOUND == asset_type )
 	{
-		LLViewerStats::getInstance()->incStat(LLViewerStats::ST_UPLOAD_SOUND_COUNT );
+		add(LLStatViewer::UPLOAD_SOUND, 1);
 	}
 	else
 	if( LLAssetType::AT_TEXTURE == asset_type )
 	{
-		LLViewerStats::getInstance()->incStat(LLViewerStats::ST_UPLOAD_TEXTURE_COUNT );
+		add(LLStatViewer::UPLOAD_TEXTURE, 1);
 	}
 	else
 	if( LLAssetType::AT_ANIMATION == asset_type)
 	{
-		LLViewerStats::getInstance()->incStat(LLViewerStats::ST_UPLOAD_ANIM_COUNT );
+		add(LLStatViewer::ANIMATION_UPLOADS, 1);
 	}
 
 	if(LLInventoryType::IT_NONE == inv_type)
@@ -1231,18 +1231,15 @@ void increase_new_upload_stats(LLAssetType::EType asset_type)
 {
 	if ( LLAssetType::AT_SOUND == asset_type )
 	{
-		LLViewerStats::getInstance()->incStat(
-			LLViewerStats::ST_UPLOAD_SOUND_COUNT );
+		add(LLStatViewer::UPLOAD_SOUND, 1);
 	}
 	else if ( LLAssetType::AT_TEXTURE == asset_type )
 	{
-		LLViewerStats::getInstance()->incStat(
-			LLViewerStats::ST_UPLOAD_TEXTURE_COUNT );
+		add(LLStatViewer::UPLOAD_TEXTURE, 1);
 	}
 	else if ( LLAssetType::AT_ANIMATION == asset_type )
 	{
-		LLViewerStats::getInstance()->incStat(
-			LLViewerStats::ST_UPLOAD_ANIM_COUNT );
+		add(LLStatViewer::ANIMATION_UPLOADS, 1);
 	}
 }
 
diff --git a/indra/newview/llviewermenufile.h b/indra/newview/llviewermenufile.h
index 3136358b83..6bba375f50 100644
--- a/indra/newview/llviewermenufile.h
+++ b/indra/newview/llviewermenufile.h
@@ -31,6 +31,7 @@
 #include "llassetstorage.h"
 #include "llinventorytype.h"
 #include "llfilepicker.h"
+#include <queue>
 
 class LLTransactionID;
 
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index a897eec551..4b1c9c5574 100755
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -2587,7 +2587,7 @@ void process_improved_im(LLMessageSystem *msg, void **user_data)
 				LLSD args;
 				args["SUBJECT"] = subj;
 				args["MESSAGE"] = mes;
-				LLNotifications::instance().add(LLNotification::Params("GroupNotice").substitutions(args).payload(payload).time_stamp(timestamp));
+				LLNotifications::instance().add(LLNotification::Params("GroupNotice").substitutions(args).payload(payload).time_stamp(LLDate(timestamp)));
 			}
 
 			// Also send down the old path for now.
@@ -3007,11 +3007,11 @@ void process_improved_im(LLMessageSystem *msg, void **user_data)
 				}
 				else
 				{
-			    LLNotification::Params params("TeleportOffered");
-			    params.substitutions = args;
-			    params.payload = payload;
-			    LLPostponedNotification::add<LLPostponedOfferNotification>(	params, from_id, false);
-			}
+					LLNotification::Params params("TeleportOffered");
+					params.substitutions = args;
+					params.payload = payload;
+					LLPostponedNotification::add<LLPostponedOfferNotification>(	params, from_id, false);
+				}
 
 			}
 		}
@@ -3102,10 +3102,10 @@ void process_improved_im(LLMessageSystem *msg, void **user_data)
 			}
 			else
 			{
-			// do not show a message box, because you're about to be
-			// teleported.
-			LLNotifications::instance().forceResponse(LLNotification::Params("TeleportOffered").payload(payload), 0);
-		}
+				// do not show a message box, because you're about to be
+				// teleported.
+				LLNotifications::instance().forceResponse(LLNotification::Params("TeleportOffered").payload(payload), 0);
+			}
 		}
 		break;
 
@@ -4065,7 +4065,7 @@ void process_agent_movement_complete(LLMessageSystem* msg, void**)
 		{
 			LLTracker::stopTracking(NULL);
 		}
-		else if ( is_teleport && !gAgent.getTeleportKeepsLookAt() )
+		else if ( is_teleport && !gAgent.getTeleportKeepsLookAt() && look_at.isExactlyZero())
 		{
 			//look at the beacon
 			LLVector3 global_agent_pos = agent_pos;
@@ -4276,7 +4276,7 @@ void send_agent_update(BOOL force_send, BOOL send_reliable)
 		msg_number += 1;
 		if (head_rot_chg < THRESHOLD_HEAD_ROT_QDOT)
 		{
-			//LL_INFOS("Messaging") << "head rot " << head_rotation << LL_ENDL;
+			//LL_INFOS("Messaging") << " head rot " << head_rotation << LL_ENDL;
 			LL_INFOS("Messaging") << "msg " << msg_number << ", frame " << LLFrameTimer::getFrameCount() << ", head_rot_chg " << head_rot_chg << LL_ENDL;
 		}
 		if (cam_rot_chg.magVec() > ROTATION_THRESHOLD) 
@@ -4295,7 +4295,7 @@ void send_agent_update(BOOL force_send, BOOL send_reliable)
 		{
 			LL_INFOS("Messaging") << "msg " << msg_number << ", frame " << LLFrameTimer::getFrameCount() << ", dcf = " << control_flag_change << LL_ENDL;
 		}
-*/
+		*/
 
 		duplicate_count = 0;
 	}
@@ -4416,18 +4416,18 @@ void send_agent_update(BOOL force_send, BOOL send_reliable)
 
 // *TODO: Remove this dependency, or figure out a better way to handle
 // this hack.
-extern U32 gObjectBits;
+extern LLUnit<LLUnits::Bits, U32> gObjectData;
 
 void process_object_update(LLMessageSystem *mesgsys, void **user_data)
 {	
 	// Update the data counters
 	if (mesgsys->getReceiveCompressedSize())
 	{
-		gObjectBits += mesgsys->getReceiveCompressedSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveCompressedSize();
 	}
 	else
 	{
-		gObjectBits += mesgsys->getReceiveSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveSize();
 	}
 
 	// Update the object...
@@ -4439,11 +4439,11 @@ void process_compressed_object_update(LLMessageSystem *mesgsys, void **user_data
 	// Update the data counters
 	if (mesgsys->getReceiveCompressedSize())
 	{
-		gObjectBits += mesgsys->getReceiveCompressedSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveCompressedSize();
 	}
 	else
 	{
-		gObjectBits += mesgsys->getReceiveSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveSize();
 	}
 
 	// Update the object...
@@ -4455,11 +4455,11 @@ void process_cached_object_update(LLMessageSystem *mesgsys, void **user_data)
 	// Update the data counters
 	if (mesgsys->getReceiveCompressedSize())
 	{
-		gObjectBits += mesgsys->getReceiveCompressedSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveCompressedSize();
 	}
 	else
 	{
-		gObjectBits += mesgsys->getReceiveSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveSize();
 	}
 
 	// Update the object...
@@ -4471,11 +4471,11 @@ void process_terse_object_update_improved(LLMessageSystem *mesgsys, void **user_
 {
 	if (mesgsys->getReceiveCompressedSize())
 	{
-		gObjectBits += mesgsys->getReceiveCompressedSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveCompressedSize();
 	}
 	else
 	{
-		gObjectBits += mesgsys->getReceiveSize() * 8;
+		gObjectData += (LLUnit<LLUnits::Bytes, U32>)mesgsys->getReceiveSize();
 	}
 
 	gObjectList.processCompressedObjectUpdate(mesgsys, user_data, OUT_TERSE_IMPROVED);
@@ -4483,30 +4483,42 @@ void process_terse_object_update_improved(LLMessageSystem *mesgsys, void **user_
 
 static LLFastTimer::DeclareTimer FTM_PROCESS_OBJECTS("Process Kill Objects");
 
+const U32 KILLOBJECT_DELETE_OPCODE = 0;
+
 
 void process_kill_object(LLMessageSystem *mesgsys, void **user_data)
 {
 	LLFastTimer t(FTM_PROCESS_OBJECTS);
 
 	LLUUID		id;
-	U32			local_id;
-	S32			i;
-	S32			num_objects;
 
-	num_objects = mesgsys->getNumberOfBlocksFast(_PREHASH_ObjectData);
+	U32 ip = mesgsys->getSenderIP();
+	U32 port = mesgsys->getSenderPort();
+	LLViewerRegion* regionp = NULL;
+	{
+		LLHost host(ip, port);
+		regionp = LLWorld::getInstance()->getRegion(host);
+	}
 
-	for (i = 0; i < num_objects; i++)
+	bool delete_object = false;
+	S32	num_objects = mesgsys->getNumberOfBlocksFast(_PREHASH_ObjectData);
+	for (S32 i = 0; i < num_objects; ++i)
 	{
+		U32	local_id;
 		mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_ID, local_id, i);
+		if (local_id == KILLOBJECT_DELETE_OPCODE)
+		{
+			// This local_id is invalid, but was sent by the server to flag
+			// all subsequent local_id's as objects that were actually deleted
+			// rather than unsubscribed from interestlist.
+			delete_object = true;
+			continue;
+		}
 
-		LLViewerObjectList::getUUIDFromLocal(id,
-											local_id,
-											gMessageSystem->getSenderIP(),
-											gMessageSystem->getSenderPort());
+		LLViewerObjectList::getUUIDFromLocal(id, local_id, ip, port); 
 		if (id == LLUUID::null)
 		{
 			LL_DEBUGS("Messaging") << "Unknown kill for local " << local_id << LL_ENDL;
-			gObjectList.mNumUnknownKills++;
 			continue;
 		}
 		else
@@ -4514,9 +4526,12 @@ void process_kill_object(LLMessageSystem *mesgsys, void **user_data)
 			LL_DEBUGS("Messaging") << "Kill message for local " << local_id << LL_ENDL;
 		}
 
-		// ...don't kill the avatar
-		if (!(id == gAgentID))
+		if (id == gAgentID)
 		{
+			// never kill our avatar
+			continue;
+		}
+
 			LLViewerObject *objectp = gObjectList.findObject(id);
 			if (objectp)
 			{
@@ -4530,18 +4545,16 @@ void process_kill_object(LLMessageSystem *mesgsys, void **user_data)
 				// Do the kill
 				gObjectList.killObject(objectp);
 			}
-			else
+
+		if(delete_object)
 			{
-				LL_WARNS("Messaging") << "Object in UUID lookup, but not on object list in kill!" << LL_ENDL;
-				gObjectList.mNumUnknownKills++;
-			}
+			regionp->killCacheEntry(local_id);
 		}
 
 		// We should remove the object from selection after it is marked dead by gObjectList to make LLToolGrab,
         // which is using the object, release the mouse capture correctly when the object dies.
         // See LLToolGrab::handleHoverActive() and LLToolGrab::handleHoverNonPhysical().
 		LLSelectMgr::getInstance()->removeObjectFromSelections(id);
-
 	}
 }
 
@@ -4753,145 +4766,18 @@ void process_sim_stats(LLMessageSystem *msg, void **user_data)
 		F32 stat_value;
 		msg->getU32("Stat", "StatID", stat_id, i);
 		msg->getF32("Stat", "StatValue", stat_value, i);
-		switch (stat_id)
+		LLStatViewer::SimMeasurementSampler* measurementp = LLStatViewer::SimMeasurementSampler::getInstance((ESimStatID)stat_id);
+		
+		if (measurementp )
 		{
-		case LL_SIM_STAT_TIME_DILATION:
-			LLViewerStats::getInstance()->mSimTimeDilation.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_FPS:
-			LLViewerStats::getInstance()->mSimFPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PHYSFPS:
-			LLViewerStats::getInstance()->mSimPhysicsFPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_AGENTUPS:
-			LLViewerStats::getInstance()->mSimAgentUPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_FRAMEMS:
-			LLViewerStats::getInstance()->mSimFrameMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NETMS:
-			LLViewerStats::getInstance()->mSimNetMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMOTHERMS:
-			LLViewerStats::getInstance()->mSimSimOtherMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMPHYSICSMS:
-			LLViewerStats::getInstance()->mSimSimPhysicsMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_AGENTMS:
-			LLViewerStats::getInstance()->mSimAgentMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_IMAGESMS:
-			LLViewerStats::getInstance()->mSimImagesMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SCRIPTMS:
-			LLViewerStats::getInstance()->mSimScriptMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NUMTASKS:
-			LLViewerStats::getInstance()->mSimObjects.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NUMTASKSACTIVE:
-			LLViewerStats::getInstance()->mSimActiveObjects.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NUMAGENTMAIN:
-			LLViewerStats::getInstance()->mSimMainAgents.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NUMAGENTCHILD:
-			LLViewerStats::getInstance()->mSimChildAgents.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_NUMSCRIPTSACTIVE:
-			LLViewerStats::getInstance()->mSimActiveScripts.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SCRIPT_EPS:
-			LLViewerStats::getInstance()->mSimScriptEPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_INPPS:
-			LLViewerStats::getInstance()->mSimInPPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_OUTPPS:
-			LLViewerStats::getInstance()->mSimOutPPS.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PENDING_DOWNLOADS:
-			LLViewerStats::getInstance()->mSimPendingDownloads.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PENDING_UPLOADS:
-			LLViewerStats::getInstance()->mSimPendingUploads.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PENDING_LOCAL_UPLOADS:
-			LLViewerStats::getInstance()->mSimPendingLocalUploads.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_TOTAL_UNACKED_BYTES:
-			LLViewerStats::getInstance()->mSimTotalUnackedBytes.addValue(stat_value / 1024.f);
-			break;
-		case LL_SIM_STAT_PHYSICS_PINNED_TASKS:
-			LLViewerStats::getInstance()->mPhysicsPinnedTasks.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PHYSICS_LOD_TASKS:
-			LLViewerStats::getInstance()->mPhysicsLODTasks.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMPHYSICSSTEPMS:
-			LLViewerStats::getInstance()->mSimSimPhysicsStepMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMPHYSICSSHAPEMS:
-			LLViewerStats::getInstance()->mSimSimPhysicsShapeUpdateMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMPHYSICSOTHERMS:
-			LLViewerStats::getInstance()->mSimSimPhysicsOtherMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMPHYSICSMEMORY:
-			LLViewerStats::getInstance()->mPhysicsMemoryAllocated.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMSPARETIME:
-			LLViewerStats::getInstance()->mSimSpareMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMSLEEPTIME:
-			LLViewerStats::getInstance()->mSimSleepMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_IOPUMPTIME:
-			LLViewerStats::getInstance()->mSimPumpIOMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PCTSCRIPTSRUN:
-			LLViewerStats::getInstance()->mSimPctScriptsRun.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SIMAISTEPTIMEMS:
-			LLViewerStats::getInstance()->mSimSimAIStepMsec.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_SKIPPEDAISILSTEPS_PS:
-			LLViewerStats::getInstance()->mSimSimSkippedSilhouetteSteps.addValue(stat_value);
-			break;
-		case LL_SIM_STAT_PCTSTEPPEDCHARACTERS:
-			LLViewerStats::getInstance()->mSimSimPctSteppedCharacters.addValue(stat_value);
-			break;
-		default:
-			// Used to be a commented out warning.
- 			LL_DEBUGS("Messaging") << "Unknown stat id" << stat_id << LL_ENDL;
-		  break;
+			measurementp->sample(stat_value);
+		}
+		else
+		{
+			llwarns << "Unknown sim stat identifier: " << stat_id << llendl;
 		}
 	}
 
-	/*
-	msg->getF32Fast(_PREHASH_Statistics, _PREHASH_PhysicsTimeDilation, time_dilation);
-	LLViewerStats::getInstance()->mSimTDStat.addValue(time_dilation);
-
-	// Process information
-	//	{	CpuUsage			F32				}
-	//	{	SimMemTotal			F32				}
-	//	{	SimMemRSS			F32				}
-	//	{	ProcessUptime		F32				}
-	F32 cpu_usage;
-	F32 sim_mem_total;
-	F32 sim_mem_rss;
-	F32 process_uptime;
-	msg->getF32Fast(_PREHASH_Statistics, _PREHASH_CpuUsage, cpu_usage);
-	msg->getF32Fast(_PREHASH_Statistics, _PREHASH_SimMemTotal, sim_mem_total);
-	msg->getF32Fast(_PREHASH_Statistics, _PREHASH_SimMemRSS, sim_mem_rss);
-	msg->getF32Fast(_PREHASH_Statistics, _PREHASH_ProcessUptime, process_uptime);
-	LLViewerStats::getInstance()->mSimCPUUsageStat.addValue(cpu_usage);
-	LLViewerStats::getInstance()->mSimMemTotalStat.addValue(sim_mem_total);
-	LLViewerStats::getInstance()->mSimMemRSSStat.addValue(sim_mem_rss);
-	*/
-
 	//
 	// Various hacks that aren't statistics, but are being handled here.
 	//
@@ -5625,14 +5511,14 @@ static void process_money_balance_reply_extended(LLMessageSystem* msg)
 bool handle_prompt_for_maturity_level_change_callback(const LLSD& notification, const LLSD& response)
 {
 	S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-
+	
 	if (0 == option)
 	{
 		// set the preference to the maturity of the region we're calling
 		U8 preferredMaturity = static_cast<U8>(notification["payload"]["_region_access"].asInteger());
 		gSavedSettings.setU32("PreferredMaturity", static_cast<U32>(preferredMaturity));
 	}
-
+	
 	return false;
 }
 
@@ -5695,7 +5581,7 @@ bool handle_special_notification(std::string notificationID, LLSD& llsdBlock)
 			gAgent.clearTeleportRequest();
 			maturityLevelNotification = LLNotificationsUtil::add(notificationID+"_AdultsOnlyContent", llsdBlock);
 			returnValue = true;
-	
+
 			notifySuffix = "_NotifyAdultsOnly";
 		}
 		else if (gAgent.prefersPG() || gAgent.prefersMature())
@@ -5792,7 +5678,7 @@ bool handle_teleport_access_blocked(LLSD& llsdBlock)
 			maturityLevelNotification = LLNotificationsUtil::add(notificationID+"_PreferencesOutOfSync", llsdBlock, llsdBlock, handle_prompt_for_maturity_level_change_callback);
 			returnValue = true;
 		}
-		}
+	}
 
 	if ((maturityLevelNotification == NULL) || maturityLevelNotification->isIgnored())
 	{
@@ -5938,7 +5824,7 @@ void process_alert_core(const std::string& message, BOOL modal)
 	// HACK -- handle callbacks for specific alerts. It also is localized in notifications.xml
 	if ( message == "You died and have been teleported to your home location")
 	{
-		LLViewerStats::getInstance()->incStat(LLViewerStats::ST_KILLED_COUNT);
+		add(LLStatViewer::KILLED, 1);
 	}
 	else if( message == "Home position set." )
 	{
@@ -5958,8 +5844,8 @@ void process_alert_core(const std::string& message, BOOL modal)
 		std::string alert_name(message.substr(ALERT_PREFIX.length()));
 		if (!handle_special_alerts(alert_name))
 		{
-		LLNotificationsUtil::add(alert_name);
-	}
+			LLNotificationsUtil::add(alert_name);
+		}
 	}
 	else if (message.find(NOTIFY_PREFIX) == 0)
 	{
@@ -7365,8 +7251,6 @@ void onCovenantLoadComplete(LLVFS *vfs,
 	}
 	else
 	{
-		LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
-		
 		if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status ||
 		    LL_ERR_FILE_EMPTY == status)
 		{
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index b1a60197a2..61c5a52f98 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -100,6 +100,7 @@
 #include "lltrans.h"
 #include "llsdutil.h"
 #include "llmediaentry.h"
+#include "llvocache.h"
 
 //#define DEBUG_UPDATE_TYPE
 
@@ -112,6 +113,9 @@ BOOL		LLViewerObject::sMapDebug = TRUE;
 LLColor4	LLViewerObject::sEditSelectColor(	1.0f, 1.f, 0.f, 0.3f);	// Edit OK
 LLColor4	LLViewerObject::sNoEditSelectColor(	1.0f, 0.f, 0.f, 0.3f);	// Can't edit
 S32			LLViewerObject::sAxisArrowLength(50);
+LLTrace::MemStatHandle	LLViewerObject::sMemStat("LLViewerObject");
+
+
 BOOL		LLViewerObject::sPulseEnabled(FALSE);
 BOOL		LLViewerObject::sUseSharedDrawables(FALSE); // TRUE
 
@@ -323,6 +327,22 @@ void LLViewerObject::deleteTEImages()
 	mTEImages = NULL;
 }
 
+//if enabled, add this object to vo cache tree when removed from rendering.
+void LLViewerObject::EnableToCacheTree(bool enabled)
+{
+	if(mDrawable.notNull() && mDrawable->getEntry() && mDrawable->getEntry()->hasVOCacheEntry())
+	{
+		if(enabled)
+		{
+			((LLVOCacheEntry*)mDrawable->getEntry()->getVOCacheEntry())->addState(LLVOCacheEntry::ADD_TO_CACHE_TREE);
+		}
+		else
+		{
+			((LLVOCacheEntry*)mDrawable->getEntry()->getVOCacheEntry())->clearState(LLVOCacheEntry::ADD_TO_CACHE_TREE);
+		}
+	}
+}
+
 void LLViewerObject::markDead()
 {
 	if (!mDead)
@@ -886,10 +906,11 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 	}
 
 	// Coordinates of objects on simulators are region-local.
-	U64 region_handle;
-	mesgsys->getU64Fast(_PREHASH_RegionData, _PREHASH_RegionHandle, region_handle);
+	U64 region_handle = 0;	
 	
+	if(mesgsys != NULL)
 	{
+		mesgsys->getU64Fast(_PREHASH_RegionData, _PREHASH_RegionHandle, region_handle);
 		LLViewerRegion* regionp = LLWorld::getInstance()->getRegionFromHandle(region_handle);
 		if(regionp != mRegionp && regionp && mRegionp)//region cross
 		{
@@ -915,11 +936,14 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 		return retval;
 	}
 
+	if(mesgsys != NULL)
+	{
 	U16 time_dilation16;
 	mesgsys->getU16Fast(_PREHASH_RegionData, _PREHASH_TimeDilation, time_dilation16);
 	F32 time_dilation = ((F32) time_dilation16) / 65535.f;
 	mTimeDilation = time_dilation;
 	mRegionp->setTimeDilation(time_dilation);
+	}
 
 	// this will be used to determine if we've really changed position
 	// Use getPosition, not getPositionRegion, since this is what we're comparing directly against.
@@ -1692,6 +1716,8 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 				// Preload these five flags for every object.
 				// Finer shades require the object to be selected, and the selection manager
 				// stores the extended permission info.
+				if(mesgsys != NULL)
+				{
 				U32 flags;
 				mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_UpdateFlags, flags, block_num);
 				// keep local flags and overwrite remote-controlled flags
@@ -1700,6 +1726,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 					// ...new objects that should come in selected need to be added to the selected list
 				mCreateSelected = ((flags & FLAGS_CREATE_SELECTED) != 0);
 			}
+			}
 			break;
 
 		default:
@@ -1726,10 +1753,21 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 			{
 				// No parent now, new parent in message -> attach to that parent if possible
 				LLUUID parent_uuid;
+
+				if(mesgsys != NULL)
+				{
 				LLViewerObjectList::getUUIDFromLocal(parent_uuid,
 														parent_id,
 														mesgsys->getSenderIP(),
 														mesgsys->getSenderPort());
+				}
+				else
+				{
+					LLViewerObjectList::getUUIDFromLocal(parent_uuid,
+														parent_id,
+														mRegionp->getHost().getAddress(),
+														mRegionp->getHost().getPort());
+				}
 
 				LLViewerObject *sent_parentp = gObjectList.findObject(parent_uuid);
 
@@ -1805,9 +1843,18 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 					//
 					
 					//parent_id
-					U32 ip = mesgsys->getSenderIP();
-					U32 port = mesgsys->getSenderPort();
+					U32 ip, port; 
 					
+					if(mesgsys != NULL)
+					{
+						ip = mesgsys->getSenderIP();
+						port = mesgsys->getSenderPort();
+					}
+					else
+					{
+						ip = mRegionp->getHost().getAddress();
+						port = mRegionp->getHost().getPort();
+					}
 					gObjectList.orphanize(this, parent_id, ip, port);
 
 					// Hide particles, icon and HUD
@@ -1845,10 +1892,21 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 				else
 				{
 					LLUUID parent_uuid;
+
+					if(mesgsys != NULL)
+					{
 					LLViewerObjectList::getUUIDFromLocal(parent_uuid,
 														parent_id,
 														gMessageSystem->getSenderIP(),
 														gMessageSystem->getSenderPort());
+					}
+					else
+					{
+						LLViewerObjectList::getUUIDFromLocal(parent_uuid,
+														parent_id,
+														mRegionp->getHost().getAddress(),
+														mRegionp->getHost().getPort());
+					}
 					sent_parentp = gObjectList.findObject(parent_uuid);
 					
 					if (isAvatar())
@@ -1869,8 +1927,18 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 						//
 						// Switching parents, but we don't know the new parent.
 						//
-						U32 ip = mesgsys->getSenderIP();
-						U32 port = mesgsys->getSenderPort();
+						U32 ip, port; 
+					
+						if(mesgsys != NULL)
+						{
+							ip = mesgsys->getSenderIP();
+							port = mesgsys->getSenderPort();
+						}
+						else
+						{
+							ip = mRegionp->getHost().getAddress();
+							port = mRegionp->getHost().getPort();
+						}
 
 						// We're an orphan, flag things appropriately.
 						gObjectList.orphanize(this, parent_id, ip, port);
@@ -1954,7 +2022,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 
 	new_rot.normQuat();
 
-	if (sPingInterpolate)
+	if (sPingInterpolate && mesgsys != NULL)
 	{ 
 		LLCircuitData *cdp = gMessageSystem->mCircuitInfo.findCircuit(mesgsys->getSender());
 		if (cdp)
@@ -1977,6 +2045,8 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 
 	// If we're going to skip this message, why are we 
 	// doing all the parenting, etc above?
+	if(mesgsys != NULL)
+	{
 	U32 packet_id = mesgsys->getCurrentRecvPacketID(); 
 	if (packet_id < mLatestRecvPacketID && 
 		mLatestRecvPacketID - packet_id < 65536)
@@ -1984,8 +2054,8 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 		//skip application of this message, it's old
 		return retval;
 	}
-
 	mLatestRecvPacketID = packet_id;
+	}
 
 	// Set the change flags for scale
 	if (new_scale != getScale())
@@ -2033,7 +2103,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 		// If we're snapping the position by more than 0.5m, update LLViewerStats::mAgentPositionSnaps
 		if ( asAvatar() && asAvatar()->isSelf() && (mag_sqr > 0.25f) )
 		{
-			LLViewerStats::getInstance()->mAgentPositionSnaps.push( diff.length() );
+			sample(LLStatViewer::AGENT_POSITION_SNAP, LLTrace::Meters(diff.length()));
 		}
 	}
 
diff --git a/indra/newview/llviewerobject.h b/indra/newview/llviewerobject.h
index 97cf0a4850..933b017aa6 100644
--- a/indra/newview/llviewerobject.h
+++ b/indra/newview/llviewerobject.h
@@ -107,7 +107,11 @@ struct PotentialReturnableObject
 
 //============================================================================
 
-class LLViewerObject : public LLPrimitive, public LLRefCount, public LLGLUpdate
+class LLViewerObject 
+:	public LLPrimitive, 
+	public LLRefCount, 
+	public LLGLUpdate,
+	public LLTrace::MemTrackable<LLViewerObject>
 {
 protected:
 	~LLViewerObject(); // use unref()
@@ -132,6 +136,7 @@ public:
 	BOOL isDead() const									{return mDead;}
 	BOOL isOrphaned() const								{ return mOrphaned; }
 	BOOL isParticleSource() const;
+	void EnableToCacheTree(bool enabled);
 
 	virtual LLVOAvatar* asAvatar();
 
@@ -631,6 +636,7 @@ public:
 	LLPointer<LLHUDIcon> mIcon;
 
 	static			BOOL		sUseSharedDrawables;
+	static	LLTrace::MemStatHandle	sMemStat;
 
 protected:
 	// delete an item in the inventory, but don't tell the
@@ -666,8 +672,6 @@ protected:
 	void deleteParticleSource();
 	void setParticleSource(const LLPartSysData& particle_parameters, const LLUUID& owner_id);
 	
-public:
-		
 private:
 	void setNameValueList(const std::string& list);		// clears nv pairs and then individually adds \n separated NV pairs from \0 terminated string
 	void deleteTEImages(); // correctly deletes list of images
@@ -746,6 +750,7 @@ protected:
 
 	static			S32			sAxisArrowLength;
 
+
 	// These two caches are only correct for non-parented objects right now!
 	mutable LLVector3		mPositionRegion;
 	mutable LLVector3		mPositionAgent;
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index 6b9d6bbc68..b26be5bc63 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -76,6 +76,7 @@
 #include "object_flags.h"
 
 #include "llappviewer.h"
+#include "llvocache.h"
 
 extern F32 gMinObjectDistance;
 extern BOOL gAnimateTextures;
@@ -93,7 +94,7 @@ extern LLPipeline	gPipeline;
 U32						LLViewerObjectList::sSimulatorMachineIndex = 1; // Not zero deliberately, to speed up index check.
 std::map<U64, U32>		LLViewerObjectList::sIPAndPortToIndex;
 std::map<U64, LLUUID>	LLViewerObjectList::sIndexAndLocalIDToUUID;
-LLStat					LLViewerObjectList::sCacheHitRate("object_cache_hits", 128);
+LLTrace::MeasurementStatHandle<>	LLViewerObjectList::sCacheHitRate("object_cache_hits");
 
 LLViewerObjectList::LLViewerObjectList()
 {
@@ -106,7 +107,6 @@ LLViewerObjectList::LLViewerObjectList()
 	mNumNewObjects = 0;
 	mWasPaused = FALSE;
 	mNumDeadObjectUpdates = 0;
-	mNumUnknownKills = 0;
 	mNumUnknownUpdates = 0;
 }
 
@@ -228,9 +228,15 @@ void LLViewerObjectList::processUpdateCore(LLViewerObject* objectp,
 										   U32 i, 
 										   const EObjectUpdateType update_type, 
 										   LLDataPacker* dpp, 
-										   BOOL just_created)
+										   bool just_created,
+										   bool from_cache)
 {
-	LLMessageSystem* msg = gMessageSystem;
+	LLMessageSystem* msg = NULL;
+	
+	if(!from_cache)
+	{
+		msg = gMessageSystem;
+	}
 
 	// ignore returned flags
 	objectp->processUpdateMessage(msg, user_data, i, update_type, dpp);
@@ -254,7 +260,18 @@ void LLViewerObjectList::processUpdateCore(LLViewerObject* objectp,
 	// RN: this must be called after we have a drawable 
 	// (from gPipeline.addObject)
 	// so that the drawable parent is set properly
+	if(msg != NULL)
+	{
 	findOrphans(objectp, msg->getSenderIP(), msg->getSenderPort());
+	}
+	else
+	{
+		LLViewerRegion* regionp = objectp->getRegion();
+		if(regionp != NULL)
+		{
+			findOrphans(objectp, regionp->getHost().getAddress(), regionp->getHost().getPort());
+		}
+	}
 	
 	// If we're just wandering around, don't create new objects selected.
 	if (just_created 
@@ -277,10 +294,88 @@ void LLViewerObjectList::processUpdateCore(LLViewerObject* objectp,
 
 static LLFastTimer::DeclareTimer FTM_PROCESS_OBJECTS("Process Objects");
 
+LLViewerObject* LLViewerObjectList::processObjectUpdateFromCache(LLVOCacheEntry* entry, LLViewerRegion* regionp)
+{
+	LLDataPacker *cached_dpp = entry->getDP();
+
+	if (!cached_dpp)
+	{
+		return NULL; //nothing cached.
+	}
+	
+	LLViewerObject *objectp;
+	U32			    local_id;
+	LLPCode		    pcode = 0;
+	LLUUID		    fullid;
+	LLViewerStatsRecorder& recorder = LLViewerStatsRecorder::instance();
+
+	// Cache Hit.
+	cached_dpp->reset();
+	cached_dpp->unpackUUID(fullid, "ID");
+	cached_dpp->unpackU32(local_id, "LocalID");
+	cached_dpp->unpackU8(pcode, "PCode");
+
+	objectp = findObject(fullid);
+
+	if (objectp)
+	{
+		if(!objectp->isDead() && (objectp->mLocalID != entry->getLocalID() ||
+			objectp->getRegion() != regionp))
+		{
+			removeFromLocalIDTable(objectp);
+			setUUIDAndLocal(fullid, entry->getLocalID(),
+							regionp->getHost().getAddress(),
+							regionp->getHost().getPort());
+				
+			if (objectp->mLocalID != entry->getLocalID())
+			{	// Update local ID in object with the one sent from the region
+				objectp->mLocalID = entry->getLocalID();
+			}
+			
+			if (objectp->getRegion() != regionp)
+			{	// Object changed region, so update it
+				objectp->updateRegion(regionp); // for LLVOAvatar
+			}
+		}
+		else
+		{
+			return objectp; //already loaded.
+		}
+	}
+
+	bool justCreated = false;
+	if (!objectp)
+	{
+		objectp = createObjectFromCache(pcode, regionp, fullid, entry->getLocalID());
+		
+		if (!objectp)
+		{
+			llinfos << "createObject failure for object: " << fullid << llendl;
+			recorder.objectUpdateFailure(entry->getLocalID(), OUT_FULL_CACHED, 0);
+			return NULL;
+		}
+		justCreated = true;
+		mNumNewObjects++;
+		sample(sCacheHitRate, 100.f);
+	}
+
+	if (objectp->isDead())
+	{
+		llwarns << "Dead object " << objectp->mID << " in UUID map 1!" << llendl;
+	}
+		
+	processUpdateCore(objectp, NULL, 0, OUT_FULL_CACHED, cached_dpp, justCreated, true);
+		
+	recorder.log(0.2f);
+	LLVOAvatar::cullAvatarsByPixelArea();
+
+	return objectp;
+}
+
 void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 											 void **user_data,
 											 const EObjectUpdateType update_type,
-											 bool cached, bool compressed)
+											 bool compressed)
 {
 	LLFastTimer t(FTM_PROCESS_OBJECTS);	
 	
@@ -299,7 +394,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 	num_objects = mesgsys->getNumberOfBlocksFast(_PREHASH_ObjectData);
 
 	// I don't think this case is ever hit.  TODO* Test this.
-	if (!cached && !compressed && update_type != OUT_FULL)
+	if (!compressed && update_type != OUT_FULL)
 	{
 		//llinfos << "TEST: !cached && !compressed && update_type != OUT_FULL" << llendl;
 		gTerseObjectUpdates += num_objects;
@@ -343,7 +438,6 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 
 	U8 compressed_dpbuffer[2048];
 	LLDataPackerBinaryBuffer compressed_dp(compressed_dpbuffer, 2048);
-	LLDataPacker *cached_dpp = NULL;
 	LLViewerStatsRecorder& recorder = LLViewerStatsRecorder::instance();
 
 	for (i = 0; i < num_objects; i++)
@@ -353,44 +447,11 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 		BOOL justCreated = FALSE;
 		S32	msg_size = 0;
 
-		if (cached)
-		{
-			U32 id;
-			U32 crc;
-			mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_ID, id, i);
-			mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_CRC, crc, i);
-			msg_size += sizeof(U32) * 2;
-		
-			// Lookup data packer and add this id to cache miss lists if necessary.
-			U8 cache_miss_type = LLViewerRegion::CACHE_MISS_TYPE_NONE;
-			cached_dpp = regionp->getDP(id, crc, cache_miss_type);
-			if (cached_dpp)
-			{
-				// Cache Hit.
-				cached_dpp->reset();
-				cached_dpp->unpackUUID(fullid, "ID");
-				cached_dpp->unpackU32(local_id, "LocalID");
-				cached_dpp->unpackU8(pcode, "PCode");
-			}
-			else
-			{
-				// Cache Miss.
-				recorder.cacheMissEvent(id, update_type, cache_miss_type, msg_size);
-
-				continue; // no data packer, skip this object
-			}
-		}
-		else if (compressed)
+		if (compressed)
 		{
 			S32							uncompressed_length = 2048;
 			compressed_dp.reset();
 
-			U32 flags = 0;
-			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
-			{
-				mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_UpdateFlags, flags, i);
-			}
-			
 			uncompressed_length = mesgsys->getSizeFast(_PREHASH_ObjectData, i, _PREHASH_Data);
 			mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_Data, compressed_dpbuffer, 0, i);
 			compressed_dp.assignBuffer(compressed_dpbuffer, uncompressed_length);
@@ -485,9 +546,6 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 					continue;
 				}
 			}
-			else if (cached) // Cache hit only?
-			{
-			}
 			else
 			{
 				if (update_type != OUT_FULL)
@@ -520,8 +578,6 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			}
 			justCreated = TRUE;
 			mNumNewObjects++;
-			sCacheHitRate.addValue(cached ? 100.f : 0.f);
-
 		}
 
 
@@ -540,15 +596,16 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			processUpdateCore(objectp, user_data, i, update_type, &compressed_dp, justCreated);
 			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
 			{
+				U32 flags = 0;
+				mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_UpdateFlags, flags, i);
+			
+				if(!(flags & FLAGS_TEMPORARY_ON_REZ))
+				{
 				bCached = true;
 				LLViewerRegion::eCacheUpdateResult result = objectp->mRegionp->cacheFullUpdate(objectp, compressed_dp);
-				recorder.cacheFullUpdate(local_id, update_type, result, objectp, msg_size);
+					recorder.cacheFullUpdate(local_id, update_type, result, objectp, msg_size);
 			}
 		}
-		else if (cached) // Cache hit only?
-		{
-			objectp->mLocalID = local_id;
-			processUpdateCore(objectp, user_data, i, update_type, cached_dpp, justCreated);
 		}
 		else
 		{
@@ -572,14 +629,51 @@ void LLViewerObjectList::processCompressedObjectUpdate(LLMessageSystem *mesgsys,
 											 void **user_data,
 											 const EObjectUpdateType update_type)
 {
-	processObjectUpdate(mesgsys, user_data, update_type, false, true);
+	processObjectUpdate(mesgsys, user_data, update_type, true);
 }
 
 void LLViewerObjectList::processCachedObjectUpdate(LLMessageSystem *mesgsys,
 											 void **user_data,
 											 const EObjectUpdateType update_type)
 {
-	processObjectUpdate(mesgsys, user_data, update_type, true, false);
+	//processObjectUpdate(mesgsys, user_data, update_type, true, false);
+
+	S32 num_objects = mesgsys->getNumberOfBlocksFast(_PREHASH_ObjectData);
+	gFullObjectUpdates += num_objects;
+
+	U64 region_handle;
+	mesgsys->getU64Fast(_PREHASH_RegionData, _PREHASH_RegionHandle, region_handle);	
+	LLViewerRegion *regionp = LLWorld::getInstance()->getRegionFromHandle(region_handle);
+	if (!regionp)
+	{
+		llwarns << "Object update from unknown region! " << region_handle << llendl;
+		return;
+	}
+
+	LLViewerStatsRecorder& recorder = LLViewerStatsRecorder::instance();
+
+	for (S32 i = 0; i < num_objects; i++)
+	{
+		S32	msg_size = 0;
+		U32 id;
+		U32 crc;
+		mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_ID, id, i);
+		mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_CRC, crc, i);
+		msg_size += sizeof(U32) * 2;
+		
+		// Lookup data packer and add this id to cache miss lists if necessary.
+		U8 cache_miss_type = LLViewerRegion::CACHE_MISS_TYPE_NONE;
+		if(!regionp->probeCache(id, crc, cache_miss_type))
+		{
+			// Cache Miss.
+			recorder.cacheMissEvent(id, update_type, cache_miss_type, msg_size);
+
+			continue; // no data packer, skip this object
+		}
+		sample(sCacheHitRate, 100.f);
+	}
+
+	return;
 }	
 
 void LLViewerObjectList::dirtyAllObjectInventory()
@@ -850,6 +944,8 @@ private:
 	LLSD mObjectIDs;
 };
 
+static LLFastTimer::DeclareTimer FTM_IDLE_COPY("Idle Copy");
+
 void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 {
 	// Update globals
@@ -899,12 +995,10 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 	static std::vector<LLViewerObject*> idle_list;
 
 	U32 idle_count = 0;
-	
-	static LLFastTimer::DeclareTimer idle_copy("Idle Copy");
-
+		
 	{
-		LLFastTimer t(idle_copy);
-
+		LLFastTimer t(FTM_IDLE_COPY);
+		
  		for (std::vector<LLPointer<LLViewerObject> >::iterator active_iter = mActiveObjects.begin();
 			active_iter != mActiveObjects.end(); active_iter++)
 		{
@@ -913,9 +1007,9 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 			{
 				if (idle_count >= idle_list.size())
 				{
-				idle_list.push_back( objectp );
-			}
-			else
+					idle_list.push_back( objectp );
+				}
+				else
 				{
 					idle_list[idle_count] = objectp;
 				}
@@ -932,7 +1026,7 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 	std::vector<LLViewerObject*>::iterator idle_end = idle_list.begin()+idle_count;
 
 	if (gSavedSettings.getBOOL("FreezeTime"))
-	{
+	{	
 		
 		for (std::vector<LLViewerObject*>::iterator iter = idle_list.begin();
 			iter != idle_end; iter++)
@@ -1029,10 +1123,10 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 	}
 	*/
 
-	LLViewerStats::getInstance()->mNumObjectsStat.addValue((S32) mObjects.size());
-	LLViewerStats::getInstance()->mNumActiveObjectsStat.addValue(idle_count);
-	LLViewerStats::getInstance()->mNumSizeCulledStat.addValue(mNumSizeCulled);
-	LLViewerStats::getInstance()->mNumVisCulledStat.addValue(mNumVisCulled);
+	sample(LLStatViewer::NUM_OBJECTS, mObjects.size());
+	sample(LLStatViewer::NUM_ACTIVE_OBJECTS, idle_count);
+	sample(LLStatViewer::NUM_SIZE_CULLED, mNumSizeCulled);
+	sample(LLStatViewer::NUM_VIS_CULLED, mNumVisCulled);
 }
 
 void LLViewerObjectList::fetchObjectCosts()
@@ -1230,7 +1324,7 @@ void LLViewerObjectList::removeDrawable(LLDrawable* drawablep)
 	}
 }
 
-BOOL LLViewerObjectList::killObject(LLViewerObject *objectp)
+BOOL LLViewerObjectList::killObject(LLViewerObject *objectp, bool cache_enabled)
 {
 	// Don't ever kill gAgentAvatarp, just force it to the agent's region
 	// unless region is NULL which is assumed to mean you are logging out.
@@ -1245,16 +1339,8 @@ BOOL LLViewerObjectList::killObject(LLViewerObject *objectp)
 
 	if (objectp)
 	{
-		if (objectp->isDead())
-		{
-			// This object is already dead.  Don't need to do more.
-			return TRUE;
-		}
-		else
-		{
-			objectp->markDead();
-		}
-
+		objectp->EnableToCacheTree(cache_enabled); //enable to add to VO cache tree if set.
+		objectp->markDead(); // does the right thing if object already dead
 		return TRUE;
 	}
 
@@ -1406,10 +1492,10 @@ void LLViewerObjectList::updateActive(LLViewerObject *objectp)
 			{
 				mActiveObjects.push_back(objectp);
 				objectp->setListIndex(mActiveObjects.size()-1);
-			objectp->setOnActiveList(TRUE);
-		}
-		else
-		{
+				objectp->setOnActiveList(TRUE);
+			}
+			else
+			{
 				llassert(idx < mActiveObjects.size());
 				llassert(mActiveObjects[idx] == objectp);
 
@@ -1538,13 +1624,13 @@ void LLViewerObjectList::shiftObjects(const LLVector3 &offset)
 
 	{
 		LLFastTimer t(FTM_PIPELINE_SHIFT);
-	gPipeline.shiftObjects(offset);
+		gPipeline.shiftObjects(offset);
 	}
 
 	{
 		LLFastTimer t(FTM_REGION_SHIFT);
-	LLWorld::getInstance()->shiftRegions(offset);
-}
+		LLWorld::getInstance()->shiftRegions(offset);
+	}
 }
 
 void LLViewerObjectList::repartitionObjects()
@@ -1890,6 +1976,29 @@ LLViewerObject *LLViewerObjectList::createObjectViewer(const LLPCode pcode, LLVi
 	return objectp;
 }
 
+LLViewerObject *LLViewerObjectList::createObjectFromCache(const LLPCode pcode, LLViewerRegion *regionp, const LLUUID &uuid, const U32 local_id)
+{
+	llassert_always(uuid.notNull());
+
+	LLViewerObject *objectp = LLViewerObject::createObject(uuid, pcode, regionp);
+	if (!objectp)
+	{
+// 		llwarns << "Couldn't create object of type " << LLPrimitive::pCodeToString(pcode) << " id:" << fullid << llendl;
+		return NULL;
+	}
+
+	objectp->mLocalID = local_id;
+	mUUIDObjectMap[uuid] = objectp;
+	setUUIDAndLocal(uuid,
+					local_id,
+					regionp->getHost().getAddress(),
+					regionp->getHost().getPort());
+	mObjects.push_back(objectp);
+	
+	updateActive(objectp);
+
+	return objectp;
+}
 
 LLViewerObject *LLViewerObjectList::createObject(const LLPCode pcode, LLViewerRegion *regionp,
 												 const LLUUID &uuid, const U32 local_id, const LLHost &sender)
diff --git a/indra/newview/llviewerobjectlist.h b/indra/newview/llviewerobjectlist.h
index 449a4633ff..cb11ef1f5e 100644
--- a/indra/newview/llviewerobjectlist.h
+++ b/indra/newview/llviewerobjectlist.h
@@ -31,8 +31,8 @@
 #include <set>
 
 // common includes
-#include "llstat.h"
 #include "llstring.h"
+#include "lltrace.h"
 
 // project includes
 #include "llviewerobject.h"
@@ -40,6 +40,7 @@
 class LLCamera;
 class LLNetMap;
 class LLDebugBeacon;
+class LLVOCacheEntry;
 
 const U32 CLOSE_BIN_SIZE = 10;
 const U32 NUM_BINS = 128;
@@ -65,12 +66,13 @@ public:
 	
 	inline LLViewerObject *findObject(const LLUUID &id);
 	LLViewerObject *createObjectViewer(const LLPCode pcode, LLViewerRegion *regionp); // Create a viewer-side object
+	LLViewerObject *createObjectFromCache(const LLPCode pcode, LLViewerRegion *regionp, const LLUUID &uuid, const U32 local_id);
 	LLViewerObject *createObject(const LLPCode pcode, LLViewerRegion *regionp,
 								 const LLUUID &uuid, const U32 local_id, const LLHost &sender);
 
 	LLViewerObject *replaceObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp); // TomY: hack to switch VO instances on the fly
 	
-	BOOL killObject(LLViewerObject *objectp);
+	BOOL killObject(LLViewerObject *objectp, bool cache_enabled = false);
 	void killObjects(LLViewerRegion *regionp); // Kill all objects owned by a particular region.
 	void killAllObjects();
 	void removeDrawable(LLDrawable* drawablep);
@@ -78,8 +80,10 @@ public:
 	void cleanDeadObjects(const BOOL use_timer = TRUE);	// Clean up the dead object list.
 
 	// Simulator and viewer side object updates...
-	void processUpdateCore(LLViewerObject* objectp, void** data, U32 block, const EObjectUpdateType update_type, LLDataPacker* dpp, BOOL justCreated);
-	void processObjectUpdate(LLMessageSystem *mesgsys, void **user_data, EObjectUpdateType update_type, bool cached=false, bool compressed=false);
+	void processUpdateCore(LLViewerObject* objectp, void** data, U32 block, const EObjectUpdateType update_type, 
+		                   LLDataPacker* dpp, bool justCreated, bool from_cache = false);
+	LLViewerObject* processObjectUpdateFromCache(LLVOCacheEntry* entry, LLViewerRegion* regionp);
+	void processObjectUpdate(LLMessageSystem *mesgsys, void **user_data, EObjectUpdateType update_type, bool compressed=false);
 	void processCompressedObjectUpdate(LLMessageSystem *mesgsys, void **user_data, EObjectUpdateType update_type);
 	void processCachedObjectUpdate(LLMessageSystem *mesgsys, void **user_data, EObjectUpdateType update_type);
 	void updateApparentAngles(LLAgent &agent);
@@ -188,14 +192,13 @@ public:
 
 	S32 mNumUnknownUpdates;
 	S32 mNumDeadObjectUpdates;
-	S32 mNumUnknownKills;
 	S32 mNumDeadObjects;
 protected:
 	std::vector<U64>	mOrphanParents;	// LocalID/ip,port of orphaned objects
 	std::vector<OrphanInfo> mOrphanChildren;	// UUID's of orphaned objects
 	S32 mNumOrphans;
 
-	static LLStat sCacheHitRate;
+	static LLTrace::MeasurementStatHandle<> sCacheHitRate;
 
 	typedef std::vector<LLPointer<LLViewerObject> > vobj_list_t;
 
diff --git a/indra/newview/llvieweroctree.cpp b/indra/newview/llvieweroctree.cpp
new file mode 100644
index 0000000000..cfa24c32ed
--- /dev/null
+++ b/indra/newview/llvieweroctree.cpp
@@ -0,0 +1,800 @@
+/** 
+ * @file llvieweroctree.cpp
+ * @brief LLViewerOctreeGroup class implementation and supporting functions
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+#include "llvieweroctree.h"
+#include "llviewerregion.h"
+
+//-----------------------------------------------------------------------------------
+//static variables definitions
+//-----------------------------------------------------------------------------------
+U32 LLViewerOctreeEntryData::sCurVisible = 0;
+
+//-----------------------------------------------------------------------------------
+//some global functions definitions
+//-----------------------------------------------------------------------------------
+S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad)
+{
+	return AABBSphereIntersectR2(min, max, origin, rad*rad);
+}
+
+S32 AABBSphereIntersectR2(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &r)
+{
+	F32 d = 0.f;
+	F32 t;
+	
+	if ((min-origin).magVecSquared() < r &&
+		(max-origin).magVecSquared() < r)
+	{
+		return 2;
+	}
+
+	for (U32 i = 0; i < 3; i++)
+	{
+		if (origin.mV[i] < min.mV[i])
+		{
+			t = min.mV[i] - origin.mV[i];
+			d += t*t;
+		}
+		else if (origin.mV[i] > max.mV[i])
+		{
+			t = origin.mV[i] - max.mV[i];
+			d += t*t;
+		}
+
+		if (d > r)
+		{
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+
+S32 AABBSphereIntersect(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &rad)
+{
+	return AABBSphereIntersectR2(min, max, origin, rad*rad);
+}
+
+S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &r)
+{
+	F32 d = 0.f;
+	F32 t;
+	
+	LLVector4a origina;
+	origina.load3(origin.mV);
+
+	LLVector4a v;
+	v.setSub(min, origina);
+	
+	if (v.dot3(v) < r)
+	{
+		v.setSub(max, origina);
+		if (v.dot3(v) < r)
+		{
+			return 2;
+		}
+	}
+
+
+	for (U32 i = 0; i < 3; i++)
+	{
+		if (origin.mV[i] < min[i])
+		{
+			t = min[i] - origin.mV[i];
+			d += t*t;
+		}
+		else if (origin.mV[i] > max[i])
+		{
+			t = origin.mV[i] - max[i];
+			d += t*t;
+		}
+
+		if (d > r)
+		{
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+//-----------------------------------------------------------------------------------
+//class LLViewerOctreeEntry definitions
+//-----------------------------------------------------------------------------------
+LLViewerOctreeEntry::LLViewerOctreeEntry() 
+	: mGroup(NULL),
+	  mBinRadius(0.f),
+	  mBinIndex(-1)
+{
+	mPositionGroup.clear();
+	mExtents[0].clear();
+	mExtents[1].clear();	
+
+	for(S32 i = 0; i < NUM_DATA_TYPE; i++)
+	{
+		mData[i] = NULL;
+	}
+}
+
+LLViewerOctreeEntry::~LLViewerOctreeEntry()
+{
+	llassert(!mGroup);
+}
+
+void LLViewerOctreeEntry::addData(LLViewerOctreeEntryData* data)
+{
+	//llassert(mData[data->getDataType()] == NULL);	
+	llassert(data != NULL);
+
+	mData[data->getDataType()] = data;
+}
+
+void LLViewerOctreeEntry::removeData(LLViewerOctreeEntryData* data)
+{
+	//llassert(data->getDataType() != LLVOCACHEENTRY); //can not remove VOCache entry
+
+	if(!mData[data->getDataType()])
+	{
+		return;
+	}
+
+	mData[data->getDataType()] = NULL;
+	
+	if(mGroup != NULL && !mData[LLDRAWABLE])
+	{
+		LLviewerOctreeGroup* group = mGroup;
+		mGroup = NULL;
+		group->removeFromGroup(data);
+
+		llassert(mBinIndex == -1);				
+	}
+}
+
+//called by group handleDestruction() ONLY when group is destroyed by octree.
+void LLViewerOctreeEntry::nullGroup()
+{
+	mGroup = NULL;
+}
+
+void LLViewerOctreeEntry::setGroup(LLviewerOctreeGroup* group)
+{
+	if(mGroup == group)
+	{
+		return;
+	}
+
+	if(mGroup)
+	{
+		LLviewerOctreeGroup* group = mGroup;
+		mGroup = NULL;
+		group->removeFromGroup(this);
+
+		llassert(mBinIndex == -1);
+	}
+
+	mGroup = group;
+}
+
+//-----------------------------------------------------------------------------------
+//class LLViewerOctreeEntryData definitions
+//-----------------------------------------------------------------------------------
+LLViewerOctreeEntryData::~LLViewerOctreeEntryData()
+{
+	if(mEntry)
+	{
+		mEntry->removeData(this);
+	}
+}
+
+LLViewerOctreeEntryData::LLViewerOctreeEntryData(LLViewerOctreeEntry::eEntryDataType_t data_type)
+	: mDataType(data_type),
+	  mEntry(NULL)
+{
+}
+
+//virtual
+void LLViewerOctreeEntryData::setOctreeEntry(LLViewerOctreeEntry* entry)
+{
+	if(mEntry.notNull())
+	{
+		return; 
+	}
+
+	if(!entry)
+	{
+		mEntry = new LLViewerOctreeEntry();
+	}
+	else
+	{
+		mEntry = entry;
+	}
+	mEntry->addData(this);
+}
+
+void LLViewerOctreeEntryData::setSpatialExtents(const LLVector3& min, const LLVector3& max)
+{ 
+	mEntry->mExtents[0].load3(min.mV); 
+	mEntry->mExtents[1].load3(max.mV);
+}
+
+void LLViewerOctreeEntryData::setSpatialExtents(const LLVector4a& min, const LLVector4a& max)
+{ 
+	mEntry->mExtents[0] = min; 
+	mEntry->mExtents[1] = max;
+}
+
+void LLViewerOctreeEntryData::setPositionGroup(const LLVector4a& pos)
+{
+	mEntry->mPositionGroup = pos;
+}
+
+const LLVector4a* LLViewerOctreeEntryData::getSpatialExtents() const 
+{
+	return mEntry->getSpatialExtents();
+}
+
+//virtual
+void LLViewerOctreeEntryData::setGroup(LLviewerOctreeGroup* group)
+{
+	mEntry->setGroup(group);
+}
+
+void LLViewerOctreeEntryData::shift(const LLVector4a &shift_vector)
+{
+	mEntry->mExtents[0].add(shift_vector);
+	mEntry->mExtents[1].add(shift_vector);
+	mEntry->mPositionGroup.add(shift_vector);
+}
+
+LLviewerOctreeGroup* LLViewerOctreeEntryData::getGroup()const        
+{
+	return mEntry.notNull() ? mEntry->mGroup : NULL;
+}
+
+const LLVector4a& LLViewerOctreeEntryData::getPositionGroup() const  
+{
+	return mEntry->getPositionGroup();
+}	
+
+//virtual
+bool LLViewerOctreeEntryData::isVisible() const
+{
+	if(mEntry)
+	{
+		return mEntry->mVisible == sCurVisible;
+	}
+	return false;
+}
+
+//virtual
+bool LLViewerOctreeEntryData::isRecentlyVisible() const
+{
+	if(!mEntry)
+	{
+		return false;
+	}
+
+	if(isVisible())
+	{
+		return true;
+	}
+	if(getGroup() && getGroup()->isRecentlyVisible())
+	{
+		setVisible();
+		return true;
+	}
+
+	return (sCurVisible - mEntry->mVisible < getMinVisFrameRange());
+}
+
+void LLViewerOctreeEntryData::setVisible() const
+{
+	if(mEntry)
+	{
+		mEntry->mVisible = sCurVisible;
+	}
+}
+
+//-----------------------------------------------------------------------------------
+//class LLviewerOctreeGroup definitions
+//-----------------------------------------------------------------------------------
+
+LLviewerOctreeGroup::~LLviewerOctreeGroup()
+{
+	if(LLViewerRegion::sCurRegionp && isVisible())
+	{
+		LLViewerRegion::sCurRegionp->clearVisibleGroup(this);
+	}
+}
+
+LLviewerOctreeGroup::LLviewerOctreeGroup(OctreeNode* node) :
+	mOctreeNode(node),
+	mState(CLEAN)
+{
+	LLVector4a tmp;
+	tmp.splat(0.f);
+	mExtents[0] = mExtents[1] = mObjectBounds[0] = mObjectBounds[0] = mObjectBounds[1] = 
+		mObjectExtents[0] = mObjectExtents[1] = tmp;
+	
+	mBounds[0] = node->getCenter();
+	mBounds[1] = node->getSize();
+
+	mOctreeNode->addListener(this);
+}
+
+bool LLviewerOctreeGroup::hasElement(LLViewerOctreeEntryData* data) 
+{ 
+	if(!data->getEntry())
+	{
+		return false;
+	}
+	return std::find(getDataBegin(), getDataEnd(), data->getEntry()) != getDataEnd(); 
+}
+
+bool LLviewerOctreeGroup::removeFromGroup(LLViewerOctreeEntryData* data)
+{
+	return removeFromGroup(data->getEntry());
+}
+
+bool LLviewerOctreeGroup::removeFromGroup(LLViewerOctreeEntry* entry)
+{
+	llassert(entry != NULL);
+	llassert(!entry->getGroup());
+
+	unbound();
+	if (mOctreeNode)
+	{
+		if (!mOctreeNode->remove(entry))
+		{
+			OCT_ERRS << "Could not remove LLVOCacheEntry from LLVOCacheOctreeGroup" << llendl;
+			return false;
+		}
+	}
+	setState(OBJECT_DIRTY);
+
+	return true;
+}
+
+//virtual 
+void LLviewerOctreeGroup::unbound()
+{
+	if (isDirty())
+	{
+		return;
+	}
+
+	setState(DIRTY);
+	
+	//all the parent nodes need to rebound this child
+	if (mOctreeNode)
+	{
+		OctreeNode* parent = (OctreeNode*) mOctreeNode->getParent();
+		while (parent != NULL)
+		{
+			LLviewerOctreeGroup* group = (LLviewerOctreeGroup*) parent->getListener(0);
+			if (!group || group->isDirty())
+			{
+				return;
+			}
+			
+			group->setState(DIRTY);
+			parent = (OctreeNode*) parent->getParent();
+		}
+	}
+}
+	
+//virtual 
+void LLviewerOctreeGroup::rebound()
+{
+	if (!isDirty())
+	{	
+		return;
+	}
+	
+	if (mOctreeNode->getChildCount() == 1 && mOctreeNode->getElementCount() == 0)
+	{
+		LLviewerOctreeGroup* group = (LLviewerOctreeGroup*) mOctreeNode->getChild(0)->getListener(0);
+		group->rebound();
+		
+		//copy single child's bounding box
+		mBounds[0] = group->mBounds[0];
+		mBounds[1] = group->mBounds[1];
+		mExtents[0] = group->mExtents[0];
+		mExtents[1] = group->mExtents[1];
+		
+		group->setState(SKIP_FRUSTUM_CHECK);
+	}
+	else if (mOctreeNode->isLeaf())
+	{ //copy object bounding box if this is a leaf
+		boundObjects(TRUE, mExtents[0], mExtents[1]);
+		mBounds[0] = mObjectBounds[0];
+		mBounds[1] = mObjectBounds[1];
+	}
+	else
+	{
+		LLVector4a& newMin = mExtents[0];
+		LLVector4a& newMax = mExtents[1];
+		LLviewerOctreeGroup* group = (LLviewerOctreeGroup*) mOctreeNode->getChild(0)->getListener(0);
+		group->clearState(SKIP_FRUSTUM_CHECK);
+		group->rebound();
+		//initialize to first child
+		newMin = group->mExtents[0];
+		newMax = group->mExtents[1];
+
+		//first, rebound children
+		for (U32 i = 1; i < mOctreeNode->getChildCount(); i++)
+		{
+			group = (LLviewerOctreeGroup*) mOctreeNode->getChild(i)->getListener(0);
+			group->clearState(SKIP_FRUSTUM_CHECK);
+			group->rebound();
+			const LLVector4a& max = group->mExtents[1];
+			const LLVector4a& min = group->mExtents[0];
+
+			newMax.setMax(newMax, max);
+			newMin.setMin(newMin, min);
+		}
+
+		boundObjects(FALSE, newMin, newMax);
+		
+		mBounds[0].setAdd(newMin, newMax);
+		mBounds[0].mul(0.5f);
+		mBounds[1].setSub(newMax, newMin);
+		mBounds[1].mul(0.5f);
+	}
+	
+	clearState(DIRTY);
+
+	return;
+}
+
+//virtual 
+void LLviewerOctreeGroup::handleInsertion(const TreeNode* node, LLViewerOctreeEntry* obj)
+{
+	obj->setGroup(this);	
+	unbound();
+	setState(OBJECT_DIRTY);
+}
+	
+//virtual 
+void LLviewerOctreeGroup::handleRemoval(const TreeNode* node, LLViewerOctreeEntry* obj)
+{
+	obj->setGroup(NULL);
+	unbound();
+	setState(OBJECT_DIRTY);
+}
+	
+//virtual 
+void LLviewerOctreeGroup::handleDestruction(const TreeNode* node)
+{
+	for (OctreeNode::element_iter i = mOctreeNode->getDataBegin(); i != mOctreeNode->getDataEnd(); ++i)
+	{
+		LLViewerOctreeEntry* obj = *i;
+		if (obj && obj->getGroup() == this)
+		{
+			obj->nullGroup();
+			//obj->setGroup(NULL);
+		}
+	}
+	mOctreeNode = NULL;
+}
+	
+//virtual 
+void LLviewerOctreeGroup::handleStateChange(const TreeNode* node)
+{
+	//drop bounding box upon state change
+	if (mOctreeNode != node)
+	{
+		mOctreeNode = (OctreeNode*) node;
+	}
+	unbound();
+}
+	
+//virtual 
+void LLviewerOctreeGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* child)
+{
+	if (child->getListenerCount() == 0)
+	{
+		new LLviewerOctreeGroup(child);
+	}
+	else
+	{
+		OCT_ERRS << "LLSpatialGroup redundancy detected." << llendl;
+	}
+
+	unbound();
+	
+	//((LLviewerOctreeGroup*)child->getListener(0))->unbound();
+}
+	
+//virtual 
+void LLviewerOctreeGroup::handleChildRemoval(const OctreeNode* parent, const OctreeNode* child)
+{
+	unbound();
+}
+
+LLviewerOctreeGroup* LLviewerOctreeGroup::getParent()
+{
+	if(!mOctreeNode)
+	{
+		return NULL;
+	}
+	
+	OctreeNode* parent = mOctreeNode->getOctParent();
+
+	if (parent)
+	{
+		return (LLviewerOctreeGroup*) parent->getListener(0);
+	}
+
+	return NULL;
+}
+
+//virtual 
+bool LLviewerOctreeGroup::boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut)
+{
+	const OctreeNode* node = mOctreeNode;
+
+	if (node->isEmpty())
+	{	//don't do anything if there are no objects
+		if (empty && mOctreeNode->getParent())
+		{	//only root is allowed to be empty
+			OCT_ERRS << "Empty leaf found in octree." << llendl;
+		}
+		return false;
+	}
+
+	LLVector4a& newMin = mObjectExtents[0];
+	LLVector4a& newMax = mObjectExtents[1];
+	
+	if (hasState(OBJECT_DIRTY))
+	{ //calculate new bounding box
+		clearState(OBJECT_DIRTY);
+
+		//initialize bounding box to first element
+		OctreeNode::const_element_iter i = node->getDataBegin();
+		LLViewerOctreeEntry* entry = *i;
+		const LLVector4a* minMax = entry->getSpatialExtents();
+
+		newMin = minMax[0];
+		newMax = minMax[1];
+
+		for (++i; i != node->getDataEnd(); ++i)
+		{
+			entry = *i;
+			minMax = entry->getSpatialExtents();
+			
+			update_min_max(newMin, newMax, minMax[0]);
+			update_min_max(newMin, newMax, minMax[1]);
+		}
+		
+		mObjectBounds[0].setAdd(newMin, newMax);
+		mObjectBounds[0].mul(0.5f);
+		mObjectBounds[1].setSub(newMax, newMin);
+		mObjectBounds[1].mul(0.5f);
+	}
+	
+	if (empty)
+	{
+		minOut = newMin;
+		maxOut = newMax;
+	}
+	else
+	{
+		minOut.setMin(minOut, newMin);
+		maxOut.setMax(maxOut, newMax);
+	}
+		
+	return TRUE;
+}
+
+//virtual 
+BOOL LLviewerOctreeGroup::isVisible() const
+{
+	return mVisible[LLViewerCamera::sCurCameraID] >= LLViewerOctreeEntryData::getCurrentFrame() ? TRUE : FALSE;
+}
+
+//virtual 
+BOOL LLviewerOctreeGroup::isRecentlyVisible() const 
+{
+	return FALSE;
+}
+
+void LLviewerOctreeGroup::setVisible()
+{
+	mVisible[LLViewerCamera::sCurCameraID] = LLViewerOctreeEntryData::getCurrentFrame();
+}
+//-----------------------------------------------------------------------------------
+//class LLViewerOctreePartition definitions
+//-----------------------------------------------------------------------------------
+LLViewerOctreePartition::LLViewerOctreePartition() : mRegionp(NULL)
+{
+	LLVector4a center, size;
+	center.splat(0.f);
+	size.splat(1.f);
+
+	mOctree = new OctreeRoot(center,size, NULL);
+}
+	
+LLViewerOctreePartition::~LLViewerOctreePartition()
+{
+	delete mOctree;
+	mOctree = NULL;
+}
+
+//-----------------------------------------------------------------------------------
+//class LLViewerOctreeCull definitions
+//-----------------------------------------------------------------------------------
+
+//virtual 
+bool LLViewerOctreeCull::earlyFail(LLviewerOctreeGroup* group)
+{	
+	return false;
+}
+	
+//virtual 
+void LLViewerOctreeCull::traverse(const OctreeNode* n)
+{
+	LLviewerOctreeGroup* group = (LLviewerOctreeGroup*) n->getListener(0);
+
+	if (earlyFail(group))
+	{
+		return;
+	}
+		
+	if (mRes == 2 || 
+		(mRes && group->hasState(LLviewerOctreeGroup::SKIP_FRUSTUM_CHECK)))
+	{	//fully in, just add everything
+		OctreeTraveler::traverse(n);
+	}
+	else
+	{
+		mRes = frustumCheck(group);
+				
+		if (mRes)
+		{ //at least partially in, run on down
+			OctreeTraveler::traverse(n);
+		}
+
+		mRes = 0;
+	}
+}
+	
+//------------------------------------------
+//agent space group culling
+S32 LLViewerOctreeCull::AABBInFrustumNoFarClipGroupBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInFrustumNoFarClip(group->mBounds[0], group->mBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBSphereIntersectGroupExtents(const LLviewerOctreeGroup* group)
+{
+	return AABBSphereIntersect(group->mExtents[0], group->mExtents[1], mCamera->getOrigin(), mCamera->mFrustumCornerDist);
+}
+
+S32 LLViewerOctreeCull::AABBInFrustumGroupBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInFrustum(group->mBounds[0], group->mBounds[1]);
+}
+//------------------------------------------
+
+//------------------------------------------
+//agent space object set culling
+S32 LLViewerOctreeCull::AABBInFrustumNoFarClipObjectBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInFrustumNoFarClip(group->mObjectBounds[0], group->mObjectBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBSphereIntersectObjectExtents(const LLviewerOctreeGroup* group)
+{
+	return AABBSphereIntersect(group->mObjectExtents[0], group->mObjectExtents[1], mCamera->getOrigin(), mCamera->mFrustumCornerDist);
+}
+
+S32 LLViewerOctreeCull::AABBInFrustumObjectBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInFrustum(group->mObjectBounds[0], group->mObjectBounds[1]);
+}
+//------------------------------------------
+
+//------------------------------------------
+//local regional space group culling
+S32 LLViewerOctreeCull::AABBInRegionFrustumNoFarClipGroupBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInRegionFrustumNoFarClip(group->mBounds[0], group->mBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBInRegionFrustumGroupBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInRegionFrustum(group->mBounds[0], group->mBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBRegionSphereIntersectGroupExtents(const LLviewerOctreeGroup* group, const LLVector3& shift)
+{
+	return AABBSphereIntersect(group->mExtents[0], group->mExtents[1], mCamera->getOrigin() - shift, mCamera->mFrustumCornerDist);
+}
+//------------------------------------------
+
+//------------------------------------------
+//local regional space object culling
+S32 LLViewerOctreeCull::AABBInRegionFrustumObjectBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInRegionFrustum(group->mObjectBounds[0], group->mObjectBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBInRegionFrustumNoFarClipObjectBounds(const LLviewerOctreeGroup* group)
+{
+	return mCamera->AABBInRegionFrustumNoFarClip(group->mObjectBounds[0], group->mObjectBounds[1]);
+}
+
+S32 LLViewerOctreeCull::AABBRegionSphereIntersectObjectExtents(const LLviewerOctreeGroup* group, const LLVector3& shift)
+{
+	return AABBSphereIntersect(group->mObjectExtents[0], group->mObjectExtents[1], mCamera->getOrigin() - shift, mCamera->mFrustumCornerDist);
+}
+//------------------------------------------
+
+//virtual 
+bool LLViewerOctreeCull::checkObjects(const OctreeNode* branch, const LLviewerOctreeGroup* group)
+{
+	if (branch->getElementCount() == 0) //no elements
+	{
+		return false;
+	}
+	else if (branch->getChildCount() == 0) //leaf state, already checked tightest bounding box
+	{
+		return true;
+	}
+	else if (mRes == 1 && !frustumCheckObjects(group)) //no objects in frustum
+	{
+		return false;
+	}
+		
+	return true;
+}
+
+//virtual 
+void LLViewerOctreeCull::preprocess(LLviewerOctreeGroup* group)
+{		
+}
+	
+//virtual 
+void LLViewerOctreeCull::processGroup(LLviewerOctreeGroup* group)
+{
+}
+	
+//virtual 
+void LLViewerOctreeCull::visit(const OctreeNode* branch) 
+{	
+	LLviewerOctreeGroup* group = (LLviewerOctreeGroup*) branch->getListener(0);
+
+	preprocess(group);
+		
+	if (checkObjects(branch, group))
+	{
+		processGroup(group);
+	}
+}
+
diff --git a/indra/newview/llvieweroctree.h b/indra/newview/llvieweroctree.h
new file mode 100644
index 0000000000..a35c551949
--- /dev/null
+++ b/indra/newview/llvieweroctree.h
@@ -0,0 +1,327 @@
+/** 
+ * @file llvieweroctree.h
+ * @brief LLViewerObjectOctree.cpp header file, defining all supporting classes.
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_VIEWEROCTREE_H
+#define LL_VIEWEROCTREE_H
+
+#include <vector>
+#include <map>
+
+#include "v2math.h"
+#include "v3math.h"
+#include "v4math.h"
+#include "m4math.h"
+#include "llvector4a.h"
+#include "llquaternion.h"
+#include "lloctree.h"
+#include "llviewercamera.h"
+
+class LLViewerRegion;
+class LLViewerOctreeEntryData;
+class LLviewerOctreeGroup;
+class LLViewerOctreeEntry;
+
+typedef LLOctreeListener<LLViewerOctreeEntry>	OctreeListener;
+typedef LLTreeNode<LLViewerOctreeEntry>			TreeNode;
+typedef LLOctreeNode<LLViewerOctreeEntry>		OctreeNode;
+typedef LLOctreeRoot<LLViewerOctreeEntry>		OctreeRoot;
+typedef LLOctreeTraveler<LLViewerOctreeEntry>	OctreeTraveler;
+
+S32 AABBSphereIntersect(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &rad);
+S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &radius_squared);
+
+S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad);
+S32 AABBSphereIntersectR2(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &radius_squared);
+
+//defines data needed for octree of an entry
+LL_ALIGN_PREFIX(16)
+class LLViewerOctreeEntry : public LLRefCount
+{
+	friend class LLViewerOctreeEntryData;
+
+public:
+	typedef enum
+	{
+		LLDRAWABLE = 0,
+		LLVOCACHEENTRY,
+		NUM_DATA_TYPE
+	}eEntryDataType_t;
+
+	~LLViewerOctreeEntry();
+public:
+	LLViewerOctreeEntry();
+	
+	void nullGroup(); //called by group handleDestruction() only
+	void setGroup(LLviewerOctreeGroup* group);
+	void removeData(LLViewerOctreeEntryData* data);
+
+	LLViewerOctreeEntryData* getData(U32 data_type)const {return mData[data_type];}
+	bool                     hasData(U32 data_type)const {return mData[data_type] != NULL;}
+
+	LLViewerOctreeEntryData* getDrawable() const {return mData[LLDRAWABLE];}
+	bool                     hasDrawable() const {return mData[LLDRAWABLE] != NULL;}
+	LLViewerOctreeEntryData* getVOCacheEntry() const {return mData[LLVOCACHEENTRY];}
+	bool                     hasVOCacheEntry() const {return mData[LLVOCACHEENTRY] != NULL;}
+
+	const LLVector4a* getSpatialExtents() const {return mExtents;} 
+	const LLVector4a& getPositionGroup() const  {return mPositionGroup;}	
+	LLviewerOctreeGroup* getGroup()const        {return mGroup;}
+	
+	F32  getBinRadius() const                   {return mBinRadius;}
+	S32	 getBinIndex() const			        {return mBinIndex; }
+	void setBinIndex(S32 index) const	        {mBinIndex = index; }
+
+	void* operator new(size_t size)
+	{
+		return ll_aligned_malloc_16(size);
+	}
+
+	void operator delete(void* ptr)
+	{
+		ll_aligned_free_16(ptr);
+	}
+
+private:
+	void addData(LLViewerOctreeEntryData* data);			
+
+private:
+	LLViewerOctreeEntryData*    mData[NUM_DATA_TYPE]; //do not use LLPointer here.
+	LLviewerOctreeGroup*        mGroup;
+
+	//aligned members
+	LL_ALIGN_16(LLVector4a		mExtents[2]);
+	LL_ALIGN_16(LLVector4a		mPositionGroup);
+	F32				            mBinRadius;
+	mutable S32		            mBinIndex;
+	mutable U32		            mVisible;	
+
+} LL_ALIGN_POSTFIX(16);
+
+//defines an abstract class for entry data
+LL_ALIGN_PREFIX(16)
+class LLViewerOctreeEntryData : public LLRefCount
+{
+protected:
+	~LLViewerOctreeEntryData();
+
+public:
+	LLViewerOctreeEntryData(const LLViewerOctreeEntryData& rhs)
+	{
+		*this = rhs;
+	}
+	LLViewerOctreeEntryData(LLViewerOctreeEntry::eEntryDataType_t data_type);
+	
+	LLViewerOctreeEntry::eEntryDataType_t getDataType() const {return mDataType;}
+	LLViewerOctreeEntry* getEntry() {return mEntry;}
+	
+	virtual void setOctreeEntry(LLViewerOctreeEntry* entry);
+
+	virtual S32  getMinVisFrameRange()const = 0;
+
+	F32                  getBinRadius() const   {return mEntry->getBinRadius();}
+	const LLVector4a*    getSpatialExtents() const;
+	LLviewerOctreeGroup* getGroup()const;
+	const LLVector4a&    getPositionGroup() const;
+	
+	void setBinRadius(F32 rad)  {mEntry->mBinRadius = rad;}
+	void setSpatialExtents(const LLVector3& min, const LLVector3& max);
+	void setSpatialExtents(const LLVector4a& min, const LLVector4a& max);
+	void setPositionGroup(const LLVector4a& pos);
+	
+	virtual void setGroup(LLviewerOctreeGroup* group);
+	void         shift(const LLVector4a &shift_vector);
+
+	U32          getVisible() const {return mEntry ? mEntry->mVisible : 0;}
+	void         setVisible() const;
+	virtual bool isVisible() const;
+	virtual bool isRecentlyVisible() const;	
+	
+	static S32 getCurrentFrame() { return sCurVisible; }
+
+protected:
+	LLVector4a& getGroupPosition()  {return mEntry->mPositionGroup;}
+	void        initVisible(U32 visible) {mEntry->mVisible = visible;}
+
+	static void incrementVisible() {sCurVisible++;}
+protected:
+	LLPointer<LLViewerOctreeEntry>        mEntry;
+	LLViewerOctreeEntry::eEntryDataType_t mDataType;
+	static  U32                           sCurVisible; // Counter for what value of mVisible means currently visible
+}LL_ALIGN_POSTFIX(16);
+
+
+//defines an octree group for an octree node, which contains multiple entries.
+LL_ALIGN_PREFIX(16)
+class LLviewerOctreeGroup : public LLOctreeListener<LLViewerOctreeEntry>
+{
+	friend class LLViewerOctreeCull;
+protected:
+	~LLviewerOctreeGroup();
+
+public:
+	enum
+	{
+		CLEAN              = 0x00000000,
+		DIRTY              = 0x00000001,
+		OBJECT_DIRTY       = 0x00000002,
+		SKIP_FRUSTUM_CHECK = 0x00000004,
+		INVALID_STATE      = 0x00000008,
+	};
+
+public:
+	typedef LLOctreeNode<LLViewerOctreeEntry>::element_iter element_iter;
+	typedef LLOctreeNode<LLViewerOctreeEntry>::element_list element_list;
+
+	LLviewerOctreeGroup(OctreeNode* node);
+	LLviewerOctreeGroup(const LLviewerOctreeGroup& rhs)
+	{
+		*this = rhs;
+	}
+
+	void* operator new(size_t size)
+	{
+		return ll_aligned_malloc_16(size);
+	}
+
+	void operator delete(void* ptr)
+	{
+		ll_aligned_free_16(ptr);
+	}
+
+	bool removeFromGroup(LLViewerOctreeEntryData* data);
+	bool removeFromGroup(LLViewerOctreeEntry* entry);
+
+	virtual void unbound();
+	virtual void rebound();
+
+	void setVisible();
+	BOOL isVisible() const;
+	virtual BOOL isRecentlyVisible() const;
+	bool isEmpty() const { return mOctreeNode->isEmpty(); }
+
+	U32  getState()				   {return mState; }
+	bool isDirty() const           {return mState & DIRTY;}
+	bool hasState(U32 state) const {return mState & state;}
+	void setState(U32 state)       {mState |= state;}
+	void clearState(U32 state)     {mState &= ~state;}	
+
+	//LISTENER FUNCTIONS
+	virtual void handleInsertion(const TreeNode* node, LLViewerOctreeEntry* obj);
+	virtual void handleRemoval(const TreeNode* node, LLViewerOctreeEntry* obj);
+	virtual void handleDestruction(const TreeNode* node);
+	virtual void handleStateChange(const TreeNode* node);
+	virtual void handleChildAddition(const OctreeNode* parent, OctreeNode* child);
+	virtual void handleChildRemoval(const OctreeNode* parent, const OctreeNode* child);
+
+	OctreeNode*          getOctreeNode() {return mOctreeNode;}
+	LLviewerOctreeGroup* getParent();
+
+	const LLVector4a* getBounds() const        {return mBounds;}
+	const LLVector4a* getExtents() const       {return mExtents;}
+	const LLVector4a* getObjectBounds() const  {return mObjectBounds;}
+	const LLVector4a* getObjectExtents() const {return mObjectExtents;}
+
+	//octree wrappers to make code more readable
+	element_list& getData() { return mOctreeNode->getData(); }
+	element_iter getDataBegin() { return mOctreeNode->getDataBegin(); }
+	element_iter getDataEnd() { return mOctreeNode->getDataEnd(); }
+	U32 getElementCount() const { return mOctreeNode->getElementCount(); }
+	bool hasElement(LLViewerOctreeEntryData* data);
+	
+private:
+	virtual bool boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut);	
+	
+protected:
+	U32         mState;
+	OctreeNode* mOctreeNode;	
+
+	LL_ALIGN_16(LLVector4a mBounds[2]);        // bounding box (center, size) of this node and all its children (tight fit to objects)
+	LL_ALIGN_16(LLVector4a mObjectBounds[2]);  // bounding box (center, size) of objects in this node
+	LL_ALIGN_16(LLVector4a mExtents[2]);       // extents (min, max) of this node and all its children
+	LL_ALIGN_16(LLVector4a mObjectExtents[2]); // extents (min, max) of objects in this node
+
+public:
+	S32         mVisible[LLViewerCamera::NUM_CAMERAS];
+}LL_ALIGN_POSTFIX(16);
+
+class LLViewerOctreePartition
+{
+public:
+	LLViewerOctreePartition();
+	virtual ~LLViewerOctreePartition();
+
+	// Cull on arbitrary frustum
+	virtual S32 cull(LLCamera &camera) = 0;
+
+public:	
+	U32              mPartitionType;
+	OctreeNode*      mOctree;
+	LLViewerRegion*  mRegionp; // the region this partition belongs to.
+};
+
+class LLViewerOctreeCull : public OctreeTraveler
+{
+public:
+	LLViewerOctreeCull(LLCamera* camera)
+		: mCamera(camera), mRes(0) { }
+
+	virtual bool earlyFail(LLviewerOctreeGroup* group);
+	virtual void traverse(const OctreeNode* n);
+	
+	//agent space group cull
+	S32 AABBInFrustumNoFarClipGroupBounds(const LLviewerOctreeGroup* group);	
+	S32 AABBSphereIntersectGroupExtents(const LLviewerOctreeGroup* group);
+	S32 AABBInFrustumGroupBounds(const LLviewerOctreeGroup* group);
+
+	//agent space object set cull
+	S32 AABBInFrustumNoFarClipObjectBounds(const LLviewerOctreeGroup* group);
+	S32 AABBSphereIntersectObjectExtents(const LLviewerOctreeGroup* group);	
+	S32 AABBInFrustumObjectBounds(const LLviewerOctreeGroup* group);
+	
+	//local region space group cull
+	S32 AABBInRegionFrustumNoFarClipGroupBounds(const LLviewerOctreeGroup* group);
+	S32 AABBInRegionFrustumGroupBounds(const LLviewerOctreeGroup* group);
+	S32 AABBRegionSphereIntersectGroupExtents(const LLviewerOctreeGroup* group, const LLVector3& shift);
+
+	//local region space object set cull
+	S32 AABBInRegionFrustumNoFarClipObjectBounds(const LLviewerOctreeGroup* group);
+	S32 AABBInRegionFrustumObjectBounds(const LLviewerOctreeGroup* group);
+	S32 AABBRegionSphereIntersectObjectExtents(const LLviewerOctreeGroup* group, const LLVector3& shift);	
+	
+	virtual S32 frustumCheck(const LLviewerOctreeGroup* group) = 0;
+	virtual S32 frustumCheckObjects(const LLviewerOctreeGroup* group) = 0;
+
+	virtual bool checkObjects(const OctreeNode* branch, const LLviewerOctreeGroup* group);
+	virtual void preprocess(LLviewerOctreeGroup* group);
+	virtual void processGroup(LLviewerOctreeGroup* group);
+	virtual void visit(const OctreeNode* branch);
+	
+protected:
+	LLCamera *mCamera;
+	S32 mRes;
+};
+
+#endif
diff --git a/indra/newview/llviewerpartsim.cpp b/indra/newview/llviewerpartsim.cpp
index 6bd9f66b9c..8acdc08b00 100644
--- a/indra/newview/llviewerpartsim.cpp
+++ b/indra/newview/llviewerpartsim.cpp
@@ -151,8 +151,8 @@ LLViewerPartGroup::LLViewerPartGroup(const LLVector3 &center_agent, const F32 bo
 
 	if (group != NULL)
 	{
-		LLVector3 center(group->mOctreeNode->getCenter().getF32ptr());
-		LLVector3 size(group->mOctreeNode->getSize().getF32ptr());
+		LLVector3 center(group->getOctreeNode()->getCenter().getF32ptr());
+		LLVector3 size(group->getOctreeNode()->getSize().getF32ptr());
 		size += LLVector3(0.01f, 0.01f, 0.01f);
 		mMinObjPos = center - size;
 		mMaxObjPos = center + size;
diff --git a/indra/newview/llviewerregion.cpp b/indra/newview/llviewerregion.cpp
index e4234a538d..914a201ffe 100644
--- a/indra/newview/llviewerregion.cpp
+++ b/indra/newview/llviewerregion.cpp
@@ -70,6 +70,7 @@
 #include "stringize.h"
 #include "llviewercontrol.h"
 #include "llsdserialize.h"
+#include "llvieweroctree.h"
 
 #ifdef LL_WINDOWS
 	#pragma warning(disable:4355)
@@ -85,6 +86,9 @@ const F32 CAP_REQUEST_TIMEOUT = 18;
 // Even though we gave up on login, keep trying for caps after we are logged in:
 const S32 MAX_CAP_REQUEST_ATTEMPTS = 30;
 
+LLViewerRegion* LLViewerRegion::sCurRegionp = NULL;
+BOOL LLViewerRegion::sVOCacheCullingEnabled = FALSE;
+
 typedef std::map<std::string, std::string> CapabilityMap;
 
 class LLViewerRegionImpl {
@@ -97,6 +101,8 @@ public:
 			mSeedCapMaxAttemptsBeforeLogin(MAX_SEED_CAP_ATTEMPTS_BEFORE_LOGIN),
 			mSeedCapAttempts(0),
 			mHttpResponderID(0),
+			mLastCameraUpdate(0),
+			mLastCameraOrigin(),
 		    // I'd prefer to set the LLCapabilityListener name to match the region
 		    // name -- it's disappointing that's not available at construction time.
 		    // We could instead store an LLCapabilityListener*, making
@@ -133,7 +139,14 @@ public:
 	// Misc
 	LLVLComposition *mCompositionp;		// Composition layer for the surface
 
-	LLVOCacheEntry::vocache_entry_map_t		mCacheMap;
+	LLVOCacheEntry::vocache_entry_map_t	  mCacheMap; //all cached entries
+	LLVOCacheEntry::vocache_entry_set_t   mActiveSet; //all active entries;
+	LLVOCacheEntry::vocache_entry_set_t   mWaitingSet; //entries waiting for LLDrawable to be generated.	
+	std::set< LLviewerOctreeGroup* >      mVisibleGroups; //visible groupa
+	LLVOCachePartition*                   mVOCachePartition;
+	LLVOCacheEntry::vocache_entry_set_t   mVisibleEntries; //must-be-created visible entries wait for objects creation.	
+	LLVOCacheEntry::vocache_entry_priority_list_t mWaitingList; //transient list storing sorted visible entries waiting for object creation.
+
 	// time?
 	// LRU info?
 
@@ -157,7 +170,10 @@ public:
 	LLCapabilityListener mCapabilityListener;
 
 	//spatial partitions for objects in this region
-	std::vector<LLSpatialPartition*> mObjectPartition;
+	std::vector<LLViewerOctreePartition*> mObjectPartition;
+
+	LLVector3 mLastCameraOrigin;
+	U32       mLastCameraUpdate;
 };
 
 // support for secondlife:///app/region/{REGION} SLapps
@@ -290,7 +306,10 @@ LLViewerRegion::LLViewerRegion(const U64 &handle,
 	mCacheLoaded(FALSE),
 	mCacheDirty(FALSE),
 	mReleaseNotesRequested(FALSE),
-	mCapabilitiesReceived(false)
+	mCapabilitiesReceived(false),
+	mBitsReceived(0.f),
+	mPacketsReceived(0.f),
+	mDead(FALSE)
 {
 	mWidth = region_width_meters;
 	mImpl->mOriginGlobal = from_region_handle(handle); 
@@ -322,17 +341,20 @@ LLViewerRegion::LLViewerRegion(const U64 &handle,
 
 	//create object partitions
 	//MUST MATCH declaration of eObjectPartitions
-	mImpl->mObjectPartition.push_back(new LLHUDPartition());		//PARTITION_HUD
-	mImpl->mObjectPartition.push_back(new LLTerrainPartition());	//PARTITION_TERRAIN
-	mImpl->mObjectPartition.push_back(new LLVoidWaterPartition());	//PARTITION_VOIDWATER
-	mImpl->mObjectPartition.push_back(new LLWaterPartition());		//PARTITION_WATER
-	mImpl->mObjectPartition.push_back(new LLTreePartition());		//PARTITION_TREE
-	mImpl->mObjectPartition.push_back(new LLParticlePartition());	//PARTITION_PARTICLE
-	mImpl->mObjectPartition.push_back(new LLGrassPartition());		//PARTITION_GRASS
-	mImpl->mObjectPartition.push_back(new LLVolumePartition());	//PARTITION_VOLUME
-	mImpl->mObjectPartition.push_back(new LLBridgePartition());	//PARTITION_BRIDGE
-	mImpl->mObjectPartition.push_back(new LLHUDParticlePartition());//PARTITION_HUD_PARTICLE
+	mImpl->mObjectPartition.push_back(new LLHUDPartition(this));		//PARTITION_HUD
+	mImpl->mObjectPartition.push_back(new LLTerrainPartition(this));	//PARTITION_TERRAIN
+	mImpl->mObjectPartition.push_back(new LLVoidWaterPartition(this));	//PARTITION_VOIDWATER
+	mImpl->mObjectPartition.push_back(new LLWaterPartition(this));		//PARTITION_WATER
+	mImpl->mObjectPartition.push_back(new LLTreePartition(this));		//PARTITION_TREE
+	mImpl->mObjectPartition.push_back(new LLParticlePartition(this));	//PARTITION_PARTICLE
+	mImpl->mObjectPartition.push_back(new LLGrassPartition(this));		//PARTITION_GRASS
+	mImpl->mObjectPartition.push_back(new LLVolumePartition(this));	//PARTITION_VOLUME
+	mImpl->mObjectPartition.push_back(new LLBridgePartition(this));	//PARTITION_BRIDGE
+	mImpl->mObjectPartition.push_back(new LLHUDParticlePartition(this));//PARTITION_HUD_PARTICLE
+	mImpl->mObjectPartition.push_back(new LLVOCachePartition(this)); //PARTITION_VO_CACHE
 	mImpl->mObjectPartition.push_back(NULL);						//PARTITION_NONE
+
+	mImpl->mVOCachePartition = getVOCachePartition();
 }
 
 
@@ -353,6 +375,12 @@ void LLViewerRegion::initStats()
 
 LLViewerRegion::~LLViewerRegion() 
 {
+	mDead = TRUE;
+	mImpl->mActiveSet.clear();
+	mImpl->mVisibleEntries.clear();
+	mImpl->mVisibleGroups.clear();
+	mImpl->mWaitingSet.clear();
+
 	gVLManager.cleanupData(this);
 	// Can't do this on destruction, because the neighbor pointers might be invalid.
 	// This should be reference counted...
@@ -367,10 +395,10 @@ LLViewerRegion::~LLViewerRegion()
 	delete mImpl->mEventPoll;
 	LLHTTPSender::clearSender(mImpl->mHost);
 	
-	saveObjectCache();
-
 	std::for_each(mImpl->mObjectPartition.begin(), mImpl->mObjectPartition.end(), DeletePointer());
 
+	saveObjectCache();
+
 	delete mImpl;
 	mImpl = NULL;
 }
@@ -436,10 +464,6 @@ void LLViewerRegion::saveObjectCache()
 		mCacheDirty = FALSE;
 	}
 
-	for(LLVOCacheEntry::vocache_entry_map_t::iterator iter = mImpl->mCacheMap.begin(); iter != mImpl->mCacheMap.end(); ++iter)
-	{
-		delete iter->second;
-	}
 	mImpl->mCacheMap.clear();
 }
 
@@ -717,8 +741,357 @@ void LLViewerRegion::dirtyHeights()
 	}
 }
 
+void LLViewerRegion::replaceCacheEntry(LLVOCacheEntry* old_entry, LLVOCacheEntry* new_entry)
+{
+	U32 state = LLVOCacheEntry::INACTIVE;
+
+	if(old_entry)
+	{
+		old_entry->copyTo(new_entry);
+		state = old_entry->getState();		
+		killCacheEntry(old_entry);
+	}
+
+	mImpl->mCacheMap[new_entry->getLocalID()] = new_entry;
+
+	if(state == LLVOCacheEntry::ACTIVE)
+	{
+		llassert(new_entry->getEntry()->hasDrawable());
+		mImpl->mActiveSet.insert(new_entry);
+	}
+	else if(state == LLVOCacheEntry::WAITING)
+	{
+		mImpl->mWaitingSet.insert(new_entry);
+	}
+	else if(old_entry && new_entry->getEntry())
+	{
+		addToVOCacheTree(new_entry);
+	}
+	new_entry->setState(state);
+}
+
+//physically delete the cache entry
+void LLViewerRegion::killCacheEntry(LLVOCacheEntry* entry)
+{	
+	if(!entry)
+	{
+		return;
+	}
+
+	//remove from active list and waiting list
+	if(entry->isState(LLVOCacheEntry::ACTIVE))
+	{
+		mImpl->mActiveSet.erase(entry);
+	}
+	else
+	{
+		if(entry->isState(LLVOCacheEntry::WAITING))
+		{
+			mImpl->mWaitingSet.erase(entry);
+		}
+		
+		//remove from mVOCachePartition
+		removeFromVOCacheTree(entry);
+	}
+
+	//remove from the forced visible list
+	mImpl->mVisibleEntries.erase(entry);
+
+	//kill LLViewerObject if exists
+	//this should be done by the rendering pipeline automatically.
+	
+	entry->setState(LLVOCacheEntry::INACTIVE);
+	
+	//remove from mCacheMap, real deletion
+	mImpl->mCacheMap.erase(entry->getLocalID());
+}
+
+//physically delete the cache entry	
+void LLViewerRegion::killCacheEntry(U32 local_id) 
+{
+	killCacheEntry(getCacheEntry(local_id));
+}
+
+U32 LLViewerRegion::getNumOfActiveCachedObjects() const
+{
+	return  mImpl->mActiveSet.size();
+}
+
+void LLViewerRegion::addActiveCacheEntry(LLVOCacheEntry* entry)
+{
+	if(!entry || mDead)
+	{
+		return;
+	}
+
+	if(entry->isState(LLVOCacheEntry::WAITING))
+	{
+		mImpl->mWaitingSet.erase(entry);
+	}
+
+	entry->setState(LLVOCacheEntry::ACTIVE);
+	entry->setVisible();
+
+	llassert(entry->getEntry()->hasDrawable());
+	mImpl->mActiveSet.insert(entry);
+}
+
+void LLViewerRegion::removeActiveCacheEntry(LLVOCacheEntry* entry, LLDrawable* drawablep)
+{
+	if(mDead)
+	{
+		return;
+	}
+
+	if(drawablep->getParent()) //child object
+	{
+		LLViewerOctreeEntry* parent_oct_entry = drawablep->getParent()->getEntry();
+		if(parent_oct_entry && parent_oct_entry->hasVOCacheEntry())
+		{
+			LLVOCacheEntry* parent = (LLVOCacheEntry*)parent_oct_entry->getVOCacheEntry();
+			parent->addChild(entry);
+		}
+	}
+	else //insert to vo cache tree.
+	{
+		//shift to the local regional space from agent space
+		const LLVector3 pos = drawablep->getVObj()->getPositionRegion();
+		LLVector4a vec(pos[0], pos[1], pos[2]);
+		LLVector4a shift; 
+		shift.setSub(vec, entry->getPositionGroup());
+		entry->shift(shift);
+		
+		addToVOCacheTree(entry);
+	}
+
+	mImpl->mVisibleEntries.erase(entry);
+	mImpl->mActiveSet.erase(entry);
+	mImpl->mWaitingSet.erase(entry);
+	entry->setState(LLVOCacheEntry::INACTIVE);
+}
+
+void LLViewerRegion::addVisibleGroup(LLviewerOctreeGroup* group)
+{
+	if(mDead || group->isEmpty())
+	{
+		return;
+	}
+	group->setVisible();
+	mImpl->mVisibleGroups.insert(group);
+}
+
+void LLViewerRegion::addToVOCacheTree(LLVOCacheEntry* entry)
+{
+	if(!sVOCacheCullingEnabled)
+	{
+		return;
+	}
+
+	if(mDead || !entry || !entry->getEntry())
+	{
+		return;
+	}
+	if(entry->getGroup()) //already in octree.
+	{
+		return;
+	}
+	if(!entry->hasState(LLVOCacheEntry::ADD_TO_CACHE_TREE))
+	{
+		return; //can not add to vo cache tree.
+	}
+
+	mImpl->mVOCachePartition->addEntry(entry->getEntry());
+}
+
+void LLViewerRegion::removeFromVOCacheTree(LLVOCacheEntry* entry)
+{
+	if(mDead || !entry || !entry->getEntry())
+	{
+		return;
+	}
+	if(!entry->getGroup())
+	{
+		return;
+	}
+
+	mImpl->mVOCachePartition->removeEntry(entry->getEntry());
+}
+
+//add the visible entries
+void LLViewerRegion::addVisibleCacheEntry(LLVOCacheEntry* entry)
+{
+	if(mDead || !entry)
+	{
+		return; 
+	}
+
+	if(entry->isState(LLVOCacheEntry::IN_QUEUE))
+	{
+		return;
+	}
+
+	if(entry->isState(LLVOCacheEntry::INACTIVE))
+	{
+		entry->setState(LLVOCacheEntry::IN_QUEUE);
+	}
+	mImpl->mVisibleEntries.insert(entry);
+}
+
+void LLViewerRegion::clearVisibleGroup(LLviewerOctreeGroup* group)
+{
+	if(mDead)
+	{
+		return;
+	}
+
+	llassert(!group->getOctreeNode() || group->isEmpty());
+
+	mImpl->mVisibleGroups.erase(group);
+}
+
+F32 LLViewerRegion::updateVisibleEntries(F32 max_time)
+{
+	if(mImpl->mVisibleGroups.empty() && mImpl->mVisibleEntries.empty())
+	{
+		return max_time;
+	}
+
+	LLTimer update_timer;
+
+	const LLVector3 camera_origin = LLViewerCamera::getInstance()->getOrigin();
+	const U32 cur_frame = LLViewerOctreeEntryData::getCurrentFrame();
+	bool needs_update = ((cur_frame - mImpl->mLastCameraUpdate) > 5) && ((camera_origin - mImpl->mLastCameraOrigin).lengthSquared() > 10.f);	
+
+	//process visible entries
+	max_time *= 0.5f; //only use up to half available time to update entries.
+
+#if 1
+	for(LLVOCacheEntry::vocache_entry_set_t::iterator iter = mImpl->mVisibleEntries.begin(); iter != mImpl->mVisibleEntries.end();)
+	{
+		LLVOCacheEntry* vo_entry = *iter;
+		vo_entry->calcSceneContribution(camera_origin, needs_update, mImpl->mLastCameraUpdate);
+
+		if(vo_entry->getState() < LLVOCacheEntry::WAITING)
+		{			
+			mImpl->mWaitingList.insert(vo_entry);
+		}
+
+		LLVOCacheEntry* child;
+		S32 num_child = vo_entry->getNumOfChildren();
+		S32 num_done = 0;
+		for(S32 i = 0; i < num_child; i++)
+		{
+			child = vo_entry->getChild(i);
+			if(child->getState() < LLVOCacheEntry::WAITING)
+			{
+				child->setSceneContribution(vo_entry->getSceneContribution());
+				mImpl->mWaitingList.insert(child);
+			}
+			else
+			{
+				num_done++;
+			}
+		}
+		if(num_done == num_child)
+		{
+			vo_entry->clearChildrenList();
+		}
+
+		if(!vo_entry->getNumOfChildren())
+		{
+			if(vo_entry->getState() >= LLVOCacheEntry::WAITING)
+			{
+				LLVOCacheEntry::vocache_entry_set_t::iterator next_iter = iter;
+				++next_iter;
+				mImpl->mVisibleEntries.erase(iter);
+				iter = next_iter;
+			}
+			else
+			{
+				++iter;
+			}
+		}
+		else
+		{
+			++iter;
+		}
+
+		//if(update_timer.getElapsedTimeF32() > max_time)
+		//{
+		//	break;
+		//}
+	}
+#endif
+
+	//process visible groups
+	std::set< LLviewerOctreeGroup* >::iterator group_iter = mImpl->mVisibleGroups.begin();
+	for(; group_iter != mImpl->mVisibleGroups.end(); ++group_iter)
+	{
+		LLviewerOctreeGroup* group = *group_iter;
+		if(!group->getOctreeNode() || group->isEmpty())
+		{
+			continue;
+		}
+
+		for (LLviewerOctreeGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
+		{
+			if((*i)->hasVOCacheEntry())
+			{
+				LLVOCacheEntry* vo_entry = (LLVOCacheEntry*)(*i)->getVOCacheEntry();
+
+				vo_entry->calcSceneContribution(camera_origin, needs_update, mImpl->mLastCameraUpdate);				
+				mImpl->mWaitingList.insert(vo_entry);
+			}
+		}
+
+		//if(update_timer.getElapsedTimeF32() > max_time)
+		//{
+		//	break;
+		//}
+	}
+	mImpl->mVisibleGroups.clear();
+
+	if(needs_update)
+	{
+		mImpl->mLastCameraOrigin = camera_origin;
+		mImpl->mLastCameraUpdate = cur_frame;
+	}
+
+	return 2.0f * max_time - update_timer.getElapsedTimeF32();
+}
+
+F32 LLViewerRegion::createVisibleObjects(F32 max_time)
+{
+	if(mImpl->mWaitingList.empty())
+	{
+		return max_time;
+	}
+
+	LLTimer update_timer;
+	S32 max_num_objects = 64; //minimum number of new objects to be added
+	for(LLVOCacheEntry::vocache_entry_priority_list_t::iterator iter = mImpl->mWaitingList.begin();
+		iter != mImpl->mWaitingList.end(); ++iter)
+	{
+		LLVOCacheEntry* vo_entry = *iter;
+			
+		if(vo_entry->getState() < LLVOCacheEntry::WAITING)
+		{
+			addNewObject(vo_entry);
+			if(max_num_objects-- < 0 && update_timer.getElapsedTimeF32() > max_time)
+			{
+				break;
+			}
+		}
+	}
+	mImpl->mWaitingList.clear();
+
+	return max_time - update_timer.getElapsedTimeF32();
+}
+
 BOOL LLViewerRegion::idleUpdate(F32 max_update_time)
 {
+	LLTimer update_timer;
+
 	// did_update returns TRUE if we did at least one significant update
 	BOOL did_update = mImpl->mLandp->idleUpdate(max_update_time);
 	
@@ -728,9 +1101,98 @@ BOOL LLViewerRegion::idleUpdate(F32 max_update_time)
 		mParcelOverlay->idleUpdate();
 	}
 
+	max_update_time -= update_timer.getElapsedTimeF32();
+	if(max_update_time < 0.f || mImpl->mCacheMap.empty())
+	{
+	return did_update;
+}
+
+	sCurRegionp = this;
+
+	//kill invisible objects
+	max_update_time = killInvisibleObjects(max_update_time);	
+	
+	max_update_time = updateVisibleEntries(max_update_time);
+	createVisibleObjects(max_update_time);
+
+	mImpl->mVisibleGroups.clear();
+	mImpl->mWaitingList.clear();
+
+	sCurRegionp = NULL;
 	return did_update;
 }
 
+F32 LLViewerRegion::killInvisibleObjects(F32 max_time)
+{
+	if(!sVOCacheCullingEnabled)
+	{
+		return max_time;
+	}
+
+	std::vector<LLDrawable*> delete_list;
+	for(LLVOCacheEntry::vocache_entry_set_t::iterator iter = mImpl->mActiveSet.begin();
+		iter != mImpl->mActiveSet.end(); ++iter)
+	{
+		if(!(*iter)->isRecentlyVisible())
+		{
+			killObject((*iter), delete_list);
+		}
+	}
+	for(S32 i = 0; i < delete_list.size(); i++)
+	{
+		gObjectList.killObject(delete_list[i]->getVObj(), true);
+	}
+	delete_list.clear();
+
+	return max_time;
+}
+
+void LLViewerRegion::killObject(LLVOCacheEntry* entry, std::vector<LLDrawable*>& delete_list)
+{
+	//kill the object.
+	LLDrawable* drawablep = (LLDrawable*)entry->getEntry()->getDrawable();
+	llassert(drawablep);
+
+	if(!drawablep->getParent())
+	{
+		LLViewerObject::const_child_list_t& child_list = drawablep->getVObj()->getChildren();
+		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
+			iter != child_list.end(); iter++)
+		{
+			LLViewerObject* child = *iter;
+			if(child->mDrawable->isRecentlyVisible())
+			{
+				//set the parent group visible if any of its children visible.
+				((LLViewerOctreeEntryData*)drawablep)->setVisible();
+				return;
+			}
+		}
+		delete_list.push_back(drawablep);				
+	}				
+}
+
+LLViewerObject* LLViewerRegion::addNewObject(LLVOCacheEntry* entry)
+{
+	LLViewerObject* obj = NULL;
+	if(!entry->getEntry()->hasDrawable()) //not added to the rendering pipeline yet
+	{
+		//add the object
+		obj = gObjectList.processObjectUpdateFromCache(entry, this);
+		if(obj)
+		{
+			if(!entry->isState(LLVOCacheEntry::ACTIVE))
+			{
+				mImpl->mWaitingSet.insert(entry);
+				entry->setState(LLVOCacheEntry::WAITING);
+			}
+		}
+	}
+	else
+	{
+		llerrs << "Object is already created." << llendl;
+	}
+	return obj;
+}
 
 // As above, but forcibly do the update.
 void LLViewerRegion::forceUpdate()
@@ -908,9 +1370,8 @@ void LLViewerRegion::updateNetStats()
 	mPacketsLost =				cdp->getPacketsLost();
 	mPingDelay =				cdp->getPingDelay();
 
-	mBitStat.addValue(mBitsIn - mLastBitsIn);
-	mPacketsStat.addValue(mPacketsIn - mLastPacketsIn);
-	mPacketsLostStat.addValue(mPacketsLost);
+	mBitsReceived += mBitsIn - mLastBitsIn;
+	mPacketsReceived += mPacketsIn - mLastPacketsIn;
 }
 
 
@@ -1190,8 +1651,9 @@ LLViewerRegion::eCacheUpdateResult LLViewerRegion::cacheFullUpdate(LLViewerObjec
 {
 	U32 local_id = objectp->getLocalID();
 	U32 crc = objectp->getCRC();
+	eCacheUpdateResult result;
 
-	LLVOCacheEntry* entry = get_if_there(mImpl->mCacheMap, local_id, (LLVOCacheEntry*)NULL);
+	LLVOCacheEntry* entry = getCacheEntry(local_id);
 
 	if (entry)
 	{
@@ -1200,41 +1662,72 @@ LLViewerRegion::eCacheUpdateResult LLViewerRegion::cacheFullUpdate(LLViewerObjec
 		{
 			// Record a hit
 			entry->recordDupe();
-			return CACHE_UPDATE_DUPE;
+			result = CACHE_UPDATE_DUPE;
 		}
+		else
+		{
+			// Update the cache entry
+			LLPointer<LLVOCacheEntry> new_entry = new LLVOCacheEntry(local_id, crc, dp);
+			replaceCacheEntry(entry, new_entry);
+			entry = new_entry;
 
-		// Update the cache entry
-		mImpl->mCacheMap.erase(local_id);
-		delete entry;
+			result = CACHE_UPDATE_CHANGED;
+		}
+	}
+	else
+	{
+		// we haven't seen this object before
+		// Create new entry and add to map
+		result = CACHE_UPDATE_ADDED;
+		//if (mImpl->mCacheMap.size() > MAX_OBJECT_CACHE_ENTRIES)
+		//{
+		//	delete mImpl->mCacheMap.begin()->second ;
+		//	mImpl->mCacheMap.erase(mImpl->mCacheMap.begin());
+		//	result = CACHE_UPDATE_REPLACED;
+		//
+		//}
 		entry = new LLVOCacheEntry(local_id, crc, dp);
+
 		mImpl->mCacheMap[local_id] = entry;
-		return CACHE_UPDATE_CHANGED;
 	}
 
-	// we haven't seen this object before
+	if(objectp->mDrawable.notNull() && !entry->getEntry())
+	{
+		entry->setOctreeEntry(objectp->mDrawable->getEntry());
+	}
+	if(entry->getEntry() && entry->getEntry()->hasDrawable() && entry->isState(LLVOCacheEntry::INACTIVE))
+	{
+		addActiveCacheEntry(entry);
+	}
+
+	return result;
+}
 
-	// Create new entry and add to map
-	eCacheUpdateResult result = CACHE_UPDATE_ADDED;
-	if (mImpl->mCacheMap.size() > MAX_OBJECT_CACHE_ENTRIES)
+LLVOCacheEntry* LLViewerRegion::getCacheEntryForOctree(U32 local_id)
 	{
-		delete mImpl->mCacheMap.begin()->second ;
-		mImpl->mCacheMap.erase(mImpl->mCacheMap.begin());
-		result = CACHE_UPDATE_REPLACED;
+	LLVOCacheEntry* entry = getCacheEntry(local_id);
+	removeFromVOCacheTree(entry);
 		
+	return entry;
 	}
-	entry = new LLVOCacheEntry(local_id, crc, dp);
 
-	mImpl->mCacheMap[local_id] = entry;
-	return result;
+LLVOCacheEntry* LLViewerRegion::getCacheEntry(U32 local_id)
+{
+	LLVOCacheEntry::vocache_entry_map_t::iterator iter = mImpl->mCacheMap.find(local_id);
+	if(iter != mImpl->mCacheMap.end())
+	{
+		return iter->second;
+	}
+	return NULL;
 }
 
 // Get data packer for this object, if we have cached data
 // AND the CRC matches. JC
-LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc, U8 &cache_miss_type)
+bool LLViewerRegion::probeCache(U32 local_id, U32 crc, U8 &cache_miss_type)
 {
 	//llassert(mCacheLoaded);  This assert failes often, changing to early-out -- davep, 2010/10/18
 
-	LLVOCacheEntry* entry = get_if_there(mImpl->mCacheMap, local_id, (LLVOCacheEntry*)NULL);
+	LLVOCacheEntry* entry = getCacheEntry(local_id);
 
 	if (entry)
 	{
@@ -1244,7 +1737,14 @@ LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc, U8 &cache_miss_type)
 			// Record a hit
 			entry->recordHit();
 		cache_miss_type = CACHE_MISS_TYPE_NONE;
-			return entry->getDP(crc);
+
+			if(entry->getGroup() || !entry->isState(LLVOCacheEntry::INACTIVE))
+			{
+				return true;
+			}
+
+			addVisibleCacheEntry(entry);
+			return true;
 		}
 		else
 		{
@@ -1260,7 +1760,7 @@ LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc, U8 &cache_miss_type)
 		mCacheMissFull.put(local_id);
 	}
 
-	return NULL;
+	return false;
 }
 
 void LLViewerRegion::addCacheMissFull(const U32 local_id)
@@ -1542,7 +2042,7 @@ void LLViewerRegionImpl::buildCapabilityNames(LLSD& capabilityNames)
 	capabilityNames.append("LandResources");
 	capabilityNames.append("MapLayer");
 	capabilityNames.append("MapLayerGod");
-	capabilityNames.append("MeshUploadFlag");
+	capabilityNames.append("MeshUploadFlag");	
 	capabilityNames.append("NavMeshGenerationStatus");
 	capabilityNames.append("NewFileAgentInventory");
 	capabilityNames.append("ObjectMedia");
@@ -1581,7 +2081,7 @@ void LLViewerRegionImpl::buildCapabilityNames(LLSD& capabilityNames)
 	capabilityNames.append("ViewerMetrics");
 	capabilityNames.append("ViewerStartAuction");
 	capabilityNames.append("ViewerStats");
-	
+
 	// Please add new capabilities alphabetically to reduce
 	// merge conflicts.
 }
@@ -1783,9 +2283,18 @@ void LLViewerRegion::logActiveCapabilities() const
 
 LLSpatialPartition* LLViewerRegion::getSpatialPartition(U32 type)
 {
-	if (type < mImpl->mObjectPartition.size())
+	if (type < mImpl->mObjectPartition.size() && type < PARTITION_VO_CACHE)
+	{
+		return (LLSpatialPartition*)mImpl->mObjectPartition[type];
+	}
+	return NULL;
+}
+
+LLVOCachePartition* LLViewerRegion::getVOCachePartition()
+{
+	if(PARTITION_VO_CACHE < mImpl->mObjectPartition.size())
 	{
-		return mImpl->mObjectPartition[type];
+		return (LLVOCachePartition*)mImpl->mObjectPartition[PARTITION_VO_CACHE];
 	}
 	return NULL;
 }
diff --git a/indra/newview/llviewerregion.h b/indra/newview/llviewerregion.h
index c9fffaf30e..9252923aa3 100644
--- a/indra/newview/llviewerregion.h
+++ b/indra/newview/llviewerregion.h
@@ -34,7 +34,6 @@
 
 #include "lldarray.h"
 #include "llwind.h"
-#include "llstat.h"
 #include "v3dmath.h"
 #include "llstring.h"
 #include "llregionflags.h"
@@ -66,8 +65,11 @@ class LLDataPacker;
 class LLDataPackerBinaryBuffer;
 class LLHost;
 class LLBBox;
-
+class LLSpatialGroup;
+class LLDrawable;
 class LLViewerRegionImpl;
+class LLviewerOctreeGroup;
+class LLVOCachePartition;
 
 class LLViewerRegion: public LLCapabilityProvider // implements this interface
 {
@@ -84,7 +86,8 @@ public:
 		PARTITION_GRASS,
 		PARTITION_VOLUME,
 		PARTITION_BRIDGE,
-		PARTITION_HUD_PARTICLE,
+		PARTITION_HUD_PARTICLE,		
+		PARTITION_VO_CACHE,
 		PARTITION_NONE,
 		NUM_PARTITIONS
 	} eObjectPartitions;
@@ -216,6 +219,12 @@ public:
 	F32	getWidth() const						{ return mWidth; }
 
 	BOOL idleUpdate(F32 max_update_time);
+	void addVisibleGroup(LLviewerOctreeGroup* group);
+	void addVisibleCacheEntry(LLVOCacheEntry* entry);
+	void addActiveCacheEntry(LLVOCacheEntry* entry);
+	void removeActiveCacheEntry(LLVOCacheEntry* entry, LLDrawable* drawablep);	
+	void killCacheEntry(U32 local_id); //physically delete the cache entry	
+	void clearVisibleGroup(LLviewerOctreeGroup* group);
 
 	// Like idleUpdate, but forces everything to complete regardless of
 	// how long it takes.
@@ -305,8 +314,9 @@ public:
 	} eCacheUpdateResult;
 
 	// handle a full update message
-	eCacheUpdateResult cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp);
-	LLDataPacker *getDP(U32 local_id, U32 crc, U8 &cache_miss_type);
+	eCacheUpdateResult cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp);	
+	LLVOCacheEntry* getCacheEntryForOctree(U32 local_id);
+	bool probeCache(U32 local_id, U32 crc, U8 &cache_miss_type);
 	void requestCacheMisses();
 	void addCacheMissFull(const U32 local_id);
 
@@ -322,7 +332,9 @@ public:
     virtual std::string getDescription() const;
 	std::string getHttpUrl() const { return mHttpUrl ;}
 
+	U32 getNumOfActiveCachedObjects() const;
 	LLSpatialPartition* getSpatialPartition(U32 type);
+	LLVOCachePartition* getVOCachePartition();
 
 	bool objectIsReturnable(const LLVector3& pos, const std::vector<LLBBox>& boxes) const;
 	bool childrenObjectReturnable( const std::vector<LLBBox>& boxes ) const;
@@ -331,6 +343,19 @@ public:
 	void getNeighboringRegions( std::vector<LLViewerRegion*>& uniqueRegions );
 	void getNeighboringRegionsStatus( std::vector<S32>& regions );
 	
+private:
+	void addToVOCacheTree(LLVOCacheEntry* entry);
+	LLViewerObject* addNewObject(LLVOCacheEntry* entry);
+	void killObject(LLVOCacheEntry* entry, std::vector<LLDrawable*>& delete_list);
+	LLVOCacheEntry* getCacheEntry(U32 local_id);
+	void removeFromVOCacheTree(LLVOCacheEntry* entry);
+	void replaceCacheEntry(LLVOCacheEntry* old_entry, LLVOCacheEntry* new_entry);
+	void killCacheEntry(LLVOCacheEntry* entry); //physically delete the cache entry	
+
+	F32 killInvisibleObjects(F32 max_time);
+	F32 createVisibleObjects(F32 max_time);
+	F32 updateVisibleEntries(F32 max_time); //update visible entries
+
 public:
 	struct CompareDistance
 	{
@@ -351,9 +376,8 @@ public:
 	LLWind  mWind;
 	LLViewerParcelOverlay	*mParcelOverlay;
 
-	LLStat	mBitStat;
-	LLStat	mPacketsStat;
-	LLStat	mPacketsLostStat;
+	F32		mBitsReceived;
+	F32		mPacketsReceived;
 
 	LLMatrix4 mRenderMatrix;
 
@@ -365,6 +389,8 @@ public:
 	LLDynamicArray<U32> mMapAvatars;
 	LLDynamicArray<LLUUID> mMapAvatarIDs;
 
+	static LLViewerRegion* sCurRegionp;
+	static BOOL sVOCacheCullingEnabled; //vo cache culling enabled or not.
 private:
 	LLViewerRegionImpl * mImpl;
 
@@ -408,18 +434,17 @@ private:
 	// Maps local ids to cache entries.
 	// Regions can have order 10,000 objects, so assume
 	// a structure of size 2^14 = 16,000
-	BOOL									mCacheLoaded;
-	BOOL                                    mCacheDirty;
+	BOOL	mCacheLoaded;
+	BOOL    mCacheDirty;
+	BOOL	mAlive;					// can become false if circuit disconnects
+	BOOL	mCapabilitiesReceived;
+	BOOL    mReleaseNotesRequested;
+	BOOL    mDead;  //if true, this region is in the process of deleting.
 
 	LLDynamicArray<U32>						mCacheMissFull;
 	LLDynamicArray<U32>						mCacheMissCRC;
-
-	bool	mAlive;					// can become false if circuit disconnects
-	bool	mCapabilitiesReceived;
-	caps_received_signal_t mCapabilitiesReceivedSignal;
-
-	BOOL mReleaseNotesRequested;
 	
+	caps_received_signal_t mCapabilitiesReceivedSignal;		
 	LLSD mSimulatorFeatures;
 };
 
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index ba9818946c..28bd02c606 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -78,6 +78,8 @@ LLGLSLShader	gGlowCombineProgram;
 LLGLSLShader	gSplatTextureRectProgram;
 LLGLSLShader	gGlowCombineFXAAProgram;
 LLGLSLShader	gTwoTextureAddProgram;
+LLGLSLShader	gTwoTextureCompareProgram;
+LLGLSLShader	gOneTextureFilterProgram;
 LLGLSLShader	gOneTextureNoColorProgram;
 LLGLSLShader	gDebugProgram;
 LLGLSLShader	gClipProgram;
@@ -672,6 +674,8 @@ void LLViewerShaderMgr::unloadShaders()
 	gSplatTextureRectProgram.unload();
 	gGlowCombineFXAAProgram.unload();
 	gTwoTextureAddProgram.unload();
+	gTwoTextureCompareProgram.unload();
+	gOneTextureFilterProgram.unload();
 	gOneTextureNoColorProgram.unload();
 	gSolidColorProgram.unload();
 
@@ -2709,6 +2713,37 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
 
 	if (success)
 	{
+		gTwoTextureCompareProgram.mName = "Two Texture Compare Shader";
+		gTwoTextureCompareProgram.mShaderFiles.clear();
+		gTwoTextureCompareProgram.mShaderFiles.push_back(make_pair("interface/twotexturecompareV.glsl", GL_VERTEX_SHADER_ARB));
+		gTwoTextureCompareProgram.mShaderFiles.push_back(make_pair("interface/twotexturecompareF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gTwoTextureCompareProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gTwoTextureCompareProgram.createShader(NULL, NULL);
+		if (success)
+		{
+			gTwoTextureCompareProgram.bind();
+			gTwoTextureCompareProgram.uniform1i("tex0", 0);
+			gTwoTextureCompareProgram.uniform1i("tex1", 1);
+		}
+	}
+
+	if (success)
+	{
+		gOneTextureFilterProgram.mName = "One Texture Filter Shader";
+		gOneTextureFilterProgram.mShaderFiles.clear();
+		gOneTextureFilterProgram.mShaderFiles.push_back(make_pair("interface/onetexturefilterV.glsl", GL_VERTEX_SHADER_ARB));
+		gOneTextureFilterProgram.mShaderFiles.push_back(make_pair("interface/onetexturefilterF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gOneTextureFilterProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gOneTextureFilterProgram.createShader(NULL, NULL);
+		if (success)
+		{
+			gOneTextureFilterProgram.bind();
+			gOneTextureFilterProgram.uniform1i("tex0", 0);
+		}
+	}
+
+	if (success)
+	{
 		gOneTextureNoColorProgram.mName = "One Texture No Color Shader";
 		gOneTextureNoColorProgram.mShaderFiles.clear();
 		gOneTextureNoColorProgram.mShaderFiles.push_back(make_pair("interface/onetexturenocolorV.glsl", GL_VERTEX_SHADER_ARB));
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index d6dd645e8c..3e7c615f23 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -233,7 +233,11 @@ extern LLGLSLShader			gAlphaMaskProgram;
 
 //output tex0[tc0] + tex1[tc1]
 extern LLGLSLShader			gTwoTextureAddProgram;
-						
+//output tex0[tc0] - tex1[tc1]
+extern LLGLSLShader			gTwoTextureCompareProgram;
+//discard some fragments based on user-set color tolerance
+extern LLGLSLShader			gOneTextureFilterProgram;
+
 extern LLGLSLShader			gOneTextureNoColorProgram;
 
 //object shaders
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 35839ae459..fa4eb73180 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -61,363 +61,240 @@
 #include "llviewernetwork.h"
 #include "llmeshrepository.h" //for LLMeshRepository::sBytesReceived
 
-
-class StatAttributes
+namespace LLStatViewer
 {
-public:
-	StatAttributes(const char* name,
-				   const BOOL enabled,
-				   const BOOL is_timer)
-		: mName(name),
-		  mEnabled(enabled),
-		  mIsTimer(is_timer)
-	{
-	}
+
+LLTrace::CountStatHandle<>	FPS("fpsstat"),
+							PACKETS_IN("packetsinstat"),
+							PACKETS_LOST("packetsloststat"),
+							PACKETS_OUT("packetsoutstat"),
+							TEXTURE_PACKETS("texturepacketsstat"),
+							TRIANGLES_DRAWN("trianglesdrawnstat"),
+							CHAT_COUNT("chatcount", "Chat messages sent"),
+							IM_COUNT("imcount", "IMs sent"),
+							OBJECT_CREATE("objectcreate"),
+							OBJECT_REZ("objectrez", "Object rez count"),
+							LOADING_WEARABLES_LONG_DELAY("loadingwearableslongdelay", "Wearables took too long to load"),
+							LOGIN_TIMEOUTS("logintimeouts", "Number of login attempts that timed out"),
+							LSL_SAVES("lslsaves", "Number of times user has saved a script"),
+							ANIMATION_UPLOADS("animationuploads", "Animations uploaded"),
+							FLY("fly", "Fly count"),
+							TELEPORT("teleport", "Teleport count"),
+							DELETE_OBJECT("deleteobject", "Objects deleted"),
+							SNAPSHOT("snapshot", "Snapshots taken"),
+							UPLOAD_SOUND("uploadsound", "Sounds uploaded"),
+							UPLOAD_TEXTURE("uploadtexture", "Textures uploaded"),
+							EDIT_TEXTURE("edittexture", "Changes to textures on objects"),
+							KILLED("killed", "Number of times killed"),
+							FRAMETIME_DOUBLED("frametimedoubled", "Ratio of frames 2x longer than previous"),
+							TEX_BAKES("texbakes"),
+							TEX_REBAKES("texrebakes"),
+							NUM_NEW_OBJECTS("numnewobjectsstat");
+LLTrace::CountStatHandle<LLTrace::Kilobits>	KBIT("kbitstat"),
+											LAYERS_KBIT("layerskbitstat"),
+											OBJECT_KBIT("objectkbitstat"),
+											ASSET_KBIT("assetkbitstat"),
+											TEXTURE_KBIT("texturekbitstat"),
+											ACTUAL_IN_KBIT("actualinkbitstat"),
+											ACTUAL_OUT_KBIT("actualoutkbitstat");
+
+LLTrace::CountStatHandle<LLTrace::Seconds> AVATAR_EDIT_TIME("avataredittime", "Seconds in Edit Appearence"),
+											TOOLBOX_TIME("toolboxtime", "Seconds using Toolbox"),
+											MOUSELOOK_TIME("mouselooktime", "Seconds in Mouselook"),
+											FPS_10_TIME("fps10time", "Seconds below 10 FPS"),
+											FPS_8_TIME("fps8time", "Seconds below 8 FPS"),
+											FPS_2_TIME("fps2time", "Seconds below 2 FPS"),
+											SIM_20_FPS_TIME("sim20fpstime", "Seconds with sim FPS below 20"),
+											SIM_PHYSICS_20_FPS_TIME("simphysics20fpstime", "Seconds with physics FPS below 20"),
+											LOSS_5_PERCENT_TIME("loss5percenttime", "Seconds with packet loss > 5%");
+
+SimMeasurement<>			SIM_TIME_DILATION("simtimedilation", "", LL_SIM_STAT_TIME_DILATION),
+							SIM_FPS("simfps", "", LL_SIM_STAT_FPS),
+							SIM_PHYSICS_FPS("simphysicsfps", "", LL_SIM_STAT_PHYSFPS),
+							SIM_AGENT_UPS("simagentups", "", LL_SIM_STAT_AGENTUPS),
+							SIM_SCRIPT_EPS("simscripteps", "", LL_SIM_STAT_SCRIPT_EPS),
+							SIM_SKIPPED_SILHOUETTE("simsimskippedsilhouettesteps", "", LL_SIM_STAT_SKIPPEDAISILSTEPS_PS),
+							SIM_SKIPPED_CHARACTERS_PERCENTAGE("simsimpctsteppedcharacters", "", LL_SIM_STAT_PCTSTEPPEDCHARACTERS),
+							SIM_MAIN_AGENTS("simmainagents", "", LL_SIM_STAT_NUMAGENTMAIN),
+							SIM_CHILD_AGENTS("simchildagents", "", LL_SIM_STAT_NUMAGENTCHILD),
+							SIM_OBJECTS("simobjects", "", LL_SIM_STAT_NUMTASKS),
+							SIM_ACTIVE_OBJECTS("simactiveobjects", "", LL_SIM_STAT_NUMTASKSACTIVE),
+							SIM_ACTIVE_SCRIPTS("simactivescripts", "", LL_SIM_STAT_NUMSCRIPTSACTIVE),
+							SIM_PERCENTAGE_SCRIPTS_RUN("simpctscriptsrun", "", LL_SIM_STAT_PCTSCRIPTSRUN),
+							SIM_IN_PACKETS_PER_SEC("siminpps", "", LL_SIM_STAT_INPPS),
+							SIM_OUT_PACKETS_PER_SEC("simoutpps", "", LL_SIM_STAT_OUTPPS),
+							SIM_PENDING_DOWNLOADS("simpendingdownloads", "", LL_SIM_STAT_PENDING_DOWNLOADS),
+							SIM_PENDING_UPLOADS("simpendinguploads", "", LL_SIM_STAT_PENDING_UPLOADS),
+							SIM_PENDING_LOCAL_UPLOADS("simpendinglocaluploads", "", LL_SIM_STAT_PENDING_LOCAL_UPLOADS),
+							SIM_PHYSICS_PINNED_TASKS("physicspinnedtasks", "", LL_SIM_STAT_PHYSICS_PINNED_TASKS),
+							SIM_PHYSICS_LOD_TASKS("physicslodtasks", "", LL_SIM_STAT_PHYSICS_LOD_TASKS);
+
+LLTrace::MeasurementStatHandle<>	FPS_SAMPLE("fpssample"),
+									NUM_IMAGES("numimagesstat"),
+									NUM_RAW_IMAGES("numrawimagesstat"),
+									NUM_OBJECTS("numobjectsstat"),
+									NUM_ACTIVE_OBJECTS("numactiveobjectsstat"),
+									NUM_SIZE_CULLED("numsizeculledstat"),
+									NUM_VIS_CULLED("numvisculledstat"),
+									ENABLE_VBO("enablevbo", "Vertex Buffers Enabled"),
+									LIGHTING_DETAIL("lightingdetail", "Lighting Detail"),
+									VISIBLE_AVATARS("visibleavatars", "Visible Avatars"),
+									SHADER_OBJECTS("shaderobjects", "Object Shaders"),
+									DRAW_DISTANCE("drawdistance", "Draw Distance"),
+									CHAT_BUBBLES("chatbubbles", "Chat Bubbles Enabled"),
+									PENDING_VFS_OPERATIONS("vfspendingoperations"), 
+									PACKETS_LOST_PERCENT("packetslostpercentstat"),
+									WINDOW_WIDTH("windowwidth", "Window width"),
+									WINDOW_HEIGHT("windowheight", "Window height");
 	
-	std::string mName;
-	BOOL mEnabled;
-	BOOL mIsTimer;
-};
+LLTrace::MeasurementStatHandle<LLTrace::Meters> AGENT_POSITION_SNAP("agentpositionsnap", "agent position corrections");
 
-const StatAttributes STAT_INFO[LLViewerStats::ST_COUNT] =
-{
-	// ST_VERSION
-	StatAttributes("Version", TRUE, FALSE),
-	// ST_AVATAR_EDIT_SECONDS
-	StatAttributes("Seconds in Edit Appearence", FALSE, TRUE),
-	// ST_TOOLBOX_SECONDS
-	StatAttributes("Seconds using Toolbox", FALSE, TRUE),
-	// ST_CHAT_COUNT
-	StatAttributes("Chat messages sent", FALSE, FALSE),
-	// ST_IM_COUNT
-	StatAttributes("IMs sent", FALSE, FALSE),
-	// ST_FULLSCREEN_BOOL
-	StatAttributes("Fullscreen mode", FALSE, FALSE),
-	// ST_RELEASE_COUNT
-	StatAttributes("Object release count", FALSE, FALSE),
-	// ST_CREATE_COUNT
-	StatAttributes("Object create count", FALSE, FALSE),
-	// ST_REZ_COUNT
-	StatAttributes("Object rez count", FALSE, FALSE),
-	// ST_FPS_10_SECONDS
-	StatAttributes("Seconds below 10 FPS", FALSE, TRUE),
-	// ST_FPS_2_SECONDS
-	StatAttributes("Seconds below 2 FPS", FALSE, TRUE),
-	// ST_MOUSELOOK_SECONDS
-	StatAttributes("Seconds in Mouselook", FALSE, TRUE),
-	// ST_FLY_COUNT
-	StatAttributes("Fly count", FALSE, FALSE),
-	// ST_TELEPORT_COUNT
-	StatAttributes("Teleport count", FALSE, FALSE),
-	// ST_OBJECT_DELETE_COUNT
-	StatAttributes("Objects deleted", FALSE, FALSE),
-	// ST_SNAPSHOT_COUNT
-	StatAttributes("Snapshots taken", FALSE, FALSE),
-	// ST_UPLOAD_SOUND_COUNT
-	StatAttributes("Sounds uploaded", FALSE, FALSE),
-	// ST_UPLOAD_TEXTURE_COUNT
-	StatAttributes("Textures uploaded", FALSE, FALSE),
-	// ST_EDIT_TEXTURE_COUNT
-	StatAttributes("Changes to textures on objects", FALSE, FALSE),
-	// ST_KILLED_COUNT
-	StatAttributes("Number of times killed", FALSE, FALSE),
-	// ST_FRAMETIME_JITTER
-	StatAttributes("Average delta between sucessive frame times", FALSE, FALSE),
-	// ST_FRAMETIME_SLEW
-	StatAttributes("Average delta between frame time and mean", FALSE, FALSE),
-	// ST_INVENTORY_TOO_LONG
-	StatAttributes("Inventory took too long to load", FALSE, FALSE),
-	// ST_WEARABLES_TOO_LONG
-	StatAttributes("Wearables took too long to load", FALSE, FALSE),
-	// ST_LOGIN_SECONDS
-	StatAttributes("Time between LoginRequest and LoginReply", FALSE, FALSE),
-	// ST_LOGIN_TIMEOUT_COUNT
-	StatAttributes("Number of login attempts that timed out", FALSE, FALSE),
-	// ST_HAS_BAD_TIMER
-	StatAttributes("Known bad timer if != 0.0", FALSE, FALSE),
-	// ST_DOWNLOAD_FAILED
-	StatAttributes("Number of times LLAssetStorage::getAssetData() has failed", FALSE, FALSE),
-	// ST_LSL_SAVE_COUNT
-	StatAttributes("Number of times user has saved a script", FALSE, FALSE),
-	// ST_UPLOAD_ANIM_COUNT
-	StatAttributes("Animations uploaded", FALSE, FALSE),
-	// ST_FPS_8_SECONDS
-	StatAttributes("Seconds below 8 FPS", FALSE, TRUE),
-	// ST_SIM_FPS_20_SECONDS
-	StatAttributes("Seconds with sim FPS below 20", FALSE, TRUE),
-	// ST_PHYS_FPS_20_SECONDS
-	StatAttributes("Seconds with physics FPS below 20", FALSE, TRUE),
-	// ST_LOSS_05_SECONDS
-	StatAttributes("Seconds with packet loss > 5%", FALSE, TRUE),
-	// ST_FPS_DROP_50_RATIO
-	StatAttributes("Ratio of frames 2x longer than previous", FALSE, FALSE),
-	// ST_ENABLE_VBO
-	StatAttributes("Vertex Buffers Enabled", TRUE, FALSE),
-	// ST_DELTA_BANDWIDTH
-	StatAttributes("Increase/Decrease in bandwidth based on packet loss", FALSE, FALSE),
-	// ST_MAX_BANDWIDTH
-	StatAttributes("Max bandwidth setting", FALSE, FALSE),
-	// ST_LIGHTING_DETAIL
-	StatAttributes("Lighting Detail", FALSE, FALSE),
-	// ST_VISIBLE_AVATARS
-	StatAttributes("Visible Avatars", FALSE, FALSE),
-	// ST_SHADER_OJECTS
-	StatAttributes("Object Shaders", FALSE, FALSE),
-	// ST_SHADER_ENVIRONMENT
-	StatAttributes("Environment Shaders", FALSE, FALSE),
-	// ST_VISIBLE_DRAW_DIST
-	StatAttributes("Draw Distance", FALSE, FALSE),
-	// ST_VISIBLE_CHAT_BUBBLES
-	StatAttributes("Chat Bubbles Enabled", FALSE, FALSE),
-	// ST_SHADER_AVATAR
-	StatAttributes("Avatar Shaders", FALSE, FALSE),
-	// ST_FRAME_SECS
-	StatAttributes("FRAME_SECS", FALSE, FALSE),
-	// ST_UPDATE_SECS
-	StatAttributes("UPDATE_SECS", FALSE, FALSE),
-	// ST_NETWORK_SECS
-	StatAttributes("NETWORK_SECS", FALSE, FALSE),
-	// ST_IMAGE_SECS
-	StatAttributes("IMAGE_SECS", FALSE, FALSE),
-	// ST_REBUILD_SECS
-	StatAttributes("REBUILD_SECS", FALSE, FALSE),
-	// ST_RENDER_SECS
-	StatAttributes("RENDER_SECS", FALSE, FALSE),
-	// ST_CROSSING_AVG
-	StatAttributes("CROSSING_AVG", FALSE, FALSE),
-	// ST_CROSSING_MAX
-	StatAttributes("CROSSING_MAX", FALSE, FALSE),
-	// ST_LIBXUL_WIDGET_USED
-	StatAttributes("LibXUL Widget used", FALSE, FALSE), // Unused
-	// ST_WINDOW_WIDTH
-	StatAttributes("Window width", FALSE, FALSE),
-	// ST_WINDOW_HEIGHT
-	StatAttributes("Window height", FALSE, FALSE),
-	// ST_TEX_BAKES
-	StatAttributes("Texture Bakes", FALSE, FALSE),
-	// ST_TEX_REBAKES
-	StatAttributes("Texture Rebakes", FALSE, FALSE)
 
-};
+LLTrace::MeasurementStatHandle<LLTrace::Bytes>	GL_TEX_MEM("gltexmemstat"),
+												GL_BOUND_MEM("glboundmemstat"),
+												RAW_MEM("rawmemstat"),
+												FORMATTED_MEM("formattedmemstat"),
+												DELTA_BANDWIDTH("deltabandwidth", "Increase/Decrease in bandwidth based on packet loss"),
+												MAX_BANDWIDTH("maxbandwidth", "Max bandwidth setting");
 
-LLViewerStats::LLViewerStats() :
-	mKBitStat("kbitstat"),
-	mLayersKBitStat("layerskbitstat"),
-	mObjectKBitStat("objectkbitstat"),
-	mAssetKBitStat("assetkbitstat"),
-	mTextureKBitStat("texturekbitstat"),
-	mVFSPendingOperations("vfspendingoperations"),
-	mObjectsDrawnStat("objectsdrawnstat"),
-	mObjectsCulledStat("objectsculledstat"),
-	mObjectsTestedStat("objectstestedstat"),
-	mObjectsComparedStat("objectscomparedstat"),
-	mObjectsOccludedStat("objectsoccludedstat"),
-	mFPSStat("fpsstat"),
-	mPacketsInStat("packetsinstat"),
-	mPacketsLostStat("packetsloststat"),
-	mPacketsOutStat("packetsoutstat"),
-	mPacketsLostPercentStat("packetslostpercentstat", 64),
-	mTexturePacketsStat("texturepacketsstat"),
-	mActualInKBitStat("actualinkbitstat"),
-	mActualOutKBitStat("actualoutkbitstat"),
-	mTrianglesDrawnStat("trianglesdrawnstat"),
-	mSimTimeDilation("simtimedilation"),
-	mSimFPS("simfps"),
-	mSimPhysicsFPS("simphysicsfps"),
-	mSimAgentUPS("simagentups"),
-	mSimScriptEPS("simscripteps"),
-	mSimFrameMsec("simframemsec"),
-	mSimNetMsec("simnetmsec"),
-	mSimSimOtherMsec("simsimothermsec"),
-	mSimSimPhysicsMsec("simsimphysicsmsec"),
-	mSimSimPhysicsStepMsec("simsimphysicsstepmsec"),
-	mSimSimPhysicsShapeUpdateMsec("simsimphysicsshapeupdatemsec"),
-	mSimSimPhysicsOtherMsec("simsimphysicsothermsec"),
-	mSimSimAIStepMsec("simsimaistepmsec"),
-	mSimSimSkippedSilhouetteSteps("simsimskippedsilhouettesteps"),
-	mSimSimPctSteppedCharacters("simsimpctsteppedcharacters"),
-	mSimAgentMsec("simagentmsec"),
-	mSimImagesMsec("simimagesmsec"),
-	mSimScriptMsec("simscriptmsec"),
-	mSimSpareMsec("simsparemsec"),
-	mSimSleepMsec("simsleepmsec"),
-	mSimPumpIOMsec("simpumpiomsec"),
-	mSimMainAgents("simmainagents"),
-	mSimChildAgents("simchildagents"),
-	mSimObjects("simobjects"),
-	mSimActiveObjects("simactiveobjects"),
-	mSimActiveScripts("simactivescripts"),
-	mSimPctScriptsRun("simpctscriptsrun"),
-	mSimInPPS("siminpps"),
-	mSimOutPPS("simoutpps"),
-	mSimPendingDownloads("simpendingdownloads"),
-	mSimPendingUploads("simpendinguploads"),
-	mSimPendingLocalUploads("simpendinglocaluploads"),
-	mSimTotalUnackedBytes("simtotalunackedbytes"),
-	mPhysicsPinnedTasks("physicspinnedtasks"),
-	mPhysicsLODTasks("physicslodtasks"),
-	mPhysicsMemoryAllocated("physicsmemoryallocated"),
-	mSimPingStat("simpingstat"),
-	mNumImagesStat("numimagesstat", 32, TRUE),
-	mNumRawImagesStat("numrawimagesstat", 32, TRUE),
-	mGLTexMemStat("gltexmemstat", 32, TRUE),
-	mGLBoundMemStat("glboundmemstat", 32, TRUE),
-	mRawMemStat("rawmemstat", 32, TRUE),
-	mFormattedMemStat("formattedmemstat", 32, TRUE),
-	mNumObjectsStat("numobjectsstat"),
-	mNumActiveObjectsStat("numactiveobjectsstat"),
-	mNumNewObjectsStat("numnewobjectsstat"),
-	mNumSizeCulledStat("numsizeculledstat"),
-	mNumVisCulledStat("numvisculledstat"),
-	mLastTimeDiff(0.0)
-{
-	for (S32 i = 0; i < ST_COUNT; i++)
-	{
-		mStats[i] = 0.0;
-	}
 	
-	if (LLTimer::knownBadTimer())
-	{
-		mStats[ST_HAS_BAD_TIMER] = 1.0;
-	}	
+SimMeasurement<LLTrace::Milliseconds> SIM_FRAME_TIME("simframemsec", "", LL_SIM_STAT_FRAMEMS),
+										SIM_NET_TIME("simnetmsec", "", LL_SIM_STAT_NETMS),
+										SIM_OTHER_TIME("simsimothermsec", "", LL_SIM_STAT_SIMOTHERMS),
+										SIM_PHYSICS_TIME("simsimphysicsmsec", "", LL_SIM_STAT_SIMPHYSICSMS),
+										SIM_PHYSICS_STEP_TIME("simsimphysicsstepmsec", "", LL_SIM_STAT_SIMPHYSICSSTEPMS),
+										SIM_PHYSICS_SHAPE_UPDATE_TIME("simsimphysicsshapeupdatemsec", "", LL_SIM_STAT_SIMPHYSICSSHAPEMS),
+										SIM_PHYSICS_OTHER_TIME("simsimphysicsothermsec", "", LL_SIM_STAT_SIMPHYSICSOTHERMS),
+										SIM_AI_TIME("simsimaistepmsec", "", LL_SIM_STAT_SIMAISTEPTIMEMS),
+										SIM_AGENTS_TIME("simagentmsec", "", LL_SIM_STAT_AGENTMS),
+										SIM_IMAGES_TIME("simimagesmsec", "", LL_SIM_STAT_IMAGESMS),
+										SIM_SCRIPTS_TIME("simscriptmsec", "", LL_SIM_STAT_SCRIPTMS),
+										SIM_SPARE_TIME("simsparemsec", "", LL_SIM_STAT_SIMSPARETIME),
+										SIM_SLEEP_TIME("simsleepmsec", "", LL_SIM_STAT_SIMSLEEPTIME),
+										SIM_PUMP_IO_TIME("simpumpiomsec", "", LL_SIM_STAT_IOPUMPTIME);
+	
+SimMeasurement<LLTrace::Bytes> SIM_UNACKED_BYTES("simtotalunackedbytes", "", LL_SIM_STAT_TOTAL_UNACKED_BYTES),
+								SIM_PHYSICS_MEM("physicsmemoryallocated", "", LL_SIM_STAT_SIMPHYSICSMEMORY);
+
+
+LLTrace::MeasurementStatHandle<LLTrace::Milliseconds>	FRAMETIME_JITTER("frametimejitter", "Average delta between successive frame times"),
+														FRAMETIME_SLEW("frametimeslew", "Average delta between frame time and mean"),
+														LOGIN_SECONDS("loginseconds", "Time between LoginRequest and LoginReply"),
+														REGION_CROSSING_TIME("regioncrossingtime", "CROSSING_AVG"),
+														FRAME_STACKTIME("framestacktime", "FRAME_SECS"),
+														UPDATE_STACKTIME("updatestacktime", "UPDATE_SECS"),
+														NETWORK_STACKTIME("networkstacktime", "NETWORK_SECS"),
+														IMAGE_STACKTIME("imagestacktime", "IMAGE_SECS"),
+														REBUILD_STACKTIME("rebuildstacktime", "REBUILD_SECS"),
+														RENDER_STACKTIME("renderstacktime", "RENDER_SECS"),
+														SIM_PING("simpingstat");
 	
-	mAgentPositionSnaps.reset();
-}
-
-LLViewerStats::~LLViewerStats()
-{
-}
-
-void LLViewerStats::resetStats()
-{
-	LLViewerStats& stats = LLViewerStats::instance();
-	stats.mKBitStat.reset();
-	stats.mLayersKBitStat.reset();
-	stats.mObjectKBitStat.reset();
-	stats.mTextureKBitStat.reset();
-	stats.mVFSPendingOperations.reset();
-	stats.mAssetKBitStat.reset();
-	stats.mPacketsInStat.reset();
-	stats.mPacketsLostStat.reset();
-	stats.mPacketsOutStat.reset();
-	stats.mFPSStat.reset();
-	stats.mTexturePacketsStat.reset();
-	stats.mAgentPositionSnaps.reset();
 }
 
-
-F64 LLViewerStats::getStat(EStatType type) const
+LLViewerStats::LLViewerStats() 
+:	mLastTimeDiff(0.0)
 {
-	return mStats[type];
+	mRecording.start();
+	LLTrace::get_frame_recording().start();
 }
 
-F64 LLViewerStats::setStat(EStatType type, F64 value)
+LLViewerStats::~LLViewerStats()
 {
-	mStats[type] = value;
-	return mStats[type];
 }
 
-F64 LLViewerStats::incStat(EStatType type, F64 value)
+void LLViewerStats::resetStats()
 {
-	mStats[type] += value;
-	return mStats[type];
+	LLViewerStats::instance().mRecording.reset();
 }
 
 void LLViewerStats::updateFrameStats(const F64 time_diff)
 {
-	if (mPacketsLostPercentStat.getCurrent() > 5.0)
+	LLTrace::Seconds time_diff_seconds(time_diff);
+	if (getRecording().getLastValue(LLStatViewer::PACKETS_LOST_PERCENT) > 5.0)
 	{
-		incStat(ST_LOSS_05_SECONDS, time_diff);
+		add(LLStatViewer::LOSS_5_PERCENT_TIME, time_diff_seconds);
 	}
 	
-	if (mSimFPS.getCurrent() < 20.f && mSimFPS.getCurrent() > 0.f)
+	F32 sim_fps = getRecording().getLastValue(LLStatViewer::SIM_FPS);
+	if (0.f < sim_fps && sim_fps < 20.f)
 	{
-		incStat(ST_SIM_FPS_20_SECONDS, time_diff);
+		add(LLStatViewer::SIM_20_FPS_TIME, time_diff_seconds);
 	}
 	
-	if (mSimPhysicsFPS.getCurrent() < 20.f && mSimPhysicsFPS.getCurrent() > 0.f)
+	F32 sim_physics_fps = getRecording().getLastValue(LLStatViewer::SIM_PHYSICS_FPS);
+
+	if (0.f < sim_physics_fps && sim_physics_fps < 20.f)
 	{
-		incStat(ST_PHYS_FPS_20_SECONDS, time_diff);
+		add(LLStatViewer::SIM_PHYSICS_20_FPS_TIME, time_diff_seconds);
 	}
 		
 	if (time_diff >= 0.5)
 	{
-		incStat(ST_FPS_2_SECONDS, time_diff);
+		add(LLStatViewer::FPS_2_TIME, time_diff_seconds);
 	}
 	if (time_diff >= 0.125)
 	{
-		incStat(ST_FPS_8_SECONDS, time_diff);
+		add(LLStatViewer::FPS_8_TIME, time_diff_seconds);
 	}
 	if (time_diff >= 0.1)
 	{
-		incStat(ST_FPS_10_SECONDS, time_diff);
+		add(LLStatViewer::FPS_10_TIME, time_diff_seconds);
 	}
 
 	if (gFrameCount && mLastTimeDiff > 0.0)
 	{
 		// new "stutter" meter
-		setStat(ST_FPS_DROP_50_RATIO,
-				(getStat(ST_FPS_DROP_50_RATIO) * (F64)(gFrameCount - 1) + 
-				 (time_diff >= 2.0 * mLastTimeDiff ? 1.0 : 0.0)) / gFrameCount);
-			
+		add(LLStatViewer::FRAMETIME_DOUBLED, time_diff >= 2.0 * mLastTimeDiff ? 1 : 0);
 
 		// old stats that were never really used
-		setStat(ST_FRAMETIME_JITTER,
-				(getStat(ST_FRAMETIME_JITTER) * (gFrameCount - 1) + 
-				 fabs(mLastTimeDiff - time_diff) / mLastTimeDiff) / gFrameCount);
+		sample(LLStatViewer::FRAMETIME_JITTER, LLTrace::Milliseconds(mLastTimeDiff - time_diff));
 			
 		F32 average_frametime = gRenderStartTime.getElapsedTimeF32() / (F32)gFrameCount;
-		setStat(ST_FRAMETIME_SLEW,
-				(getStat(ST_FRAMETIME_SLEW) * (gFrameCount - 1) + 
-				 fabs(average_frametime - time_diff) / average_frametime) / gFrameCount);
+		sample(LLStatViewer::FRAMETIME_SLEW, LLTrace::Milliseconds(average_frametime - time_diff));
 
 		F32 max_bandwidth = gViewerThrottle.getMaxBandwidth();
 		F32 delta_bandwidth = gViewerThrottle.getCurrentBandwidth() - max_bandwidth;
-		setStat(ST_DELTA_BANDWIDTH, delta_bandwidth / 1024.f);
-
-		setStat(ST_MAX_BANDWIDTH, max_bandwidth / 1024.f);
-		
+		sample(LLStatViewer::DELTA_BANDWIDTH, LLTrace::Bits(delta_bandwidth));
+		sample(LLStatViewer::MAX_BANDWIDTH, LLTrace::Bits(max_bandwidth));
 	}
 	
 	mLastTimeDiff = time_diff;
-
 }
 
 void LLViewerStats::addToMessage(LLSD &body) const
 {
 	LLSD &misc = body["misc"];
 	
-	for (S32 i = 0; i < ST_COUNT; i++)
-	{
-		if (STAT_INFO[i].mEnabled)
-		{
-			// TODO: send timer value so dataserver can normalize
-			misc[STAT_INFO[i].mName] = mStats[i];
-			llinfos << "STAT: " << STAT_INFO[i].mName << ": " << mStats[i]
-					<< llendl;
-		}
-	}
+	misc["Version"] = TRUE;
+	//TODO RN: get last value, not mean
+	misc["Vertex Buffers Enabled"] = getRecording().getMean(LLStatViewer::ENABLE_VBO);
 	
-	body["AgentPositionSnaps"] = mAgentPositionSnaps.getData();
-	llinfos << "STAT: AgentPositionSnaps: Mean = " << mAgentPositionSnaps.getMean() << "; StdDev = " << mAgentPositionSnaps.getStdDev() 
-			<< "; Count = " << mAgentPositionSnaps.getCount() << llendl;
+	body["AgentPositionSnaps"] = getRecording().getSum(LLStatViewer::AGENT_POSITION_SNAP).value(); //mAgentPositionSnaps.asLLSD();
+	llinfos << "STAT: AgentPositionSnaps: Mean = " << getRecording().getMean(LLStatViewer::AGENT_POSITION_SNAP).value() << "; StdDev = " << getRecording().getStandardDeviation(LLStatViewer::AGENT_POSITION_SNAP).value() 
+			<< "; Count = " << getRecording().getSampleCount(LLStatViewer::AGENT_POSITION_SNAP) << llendl;
 }
 
 // *NOTE:Mani The following methods used to exist in viewer.cpp
 // Moving them here, but not merging them into LLViewerStats yet.
-U32		gTotalLandIn = 0, gTotalLandOut = 0;
-U32		gTotalWaterIn = 0, gTotalWaterOut = 0;
-
-F32		gAveLandCompression = 0.f, gAveWaterCompression = 0.f;
-F32		gBestLandCompression = 1.f, gBestWaterCompression = 1.f;
-F32		gWorstLandCompression = 0.f, gWorstWaterCompression = 0.f;
-
-
-
-U32		gTotalWorldBytes = 0, gTotalObjectBytes = 0, gTotalTextureBytes = 0, gSimPingCount = 0;
-U32		gObjectBits = 0;
+U32		gTotalLandIn = 0, 
+		gTotalLandOut = 0,
+		gTotalWaterIn = 0, 
+		gTotalWaterOut = 0;
+
+F32		gAveLandCompression = 0.f, 
+		gAveWaterCompression = 0.f,
+		gBestLandCompression = 1.f,
+		gBestWaterCompression = 1.f,
+		gWorstLandCompression = 0.f, 
+		gWorstWaterCompression = 0.f;
+
+LLUnit<LLUnits::Bytes, U32>		gTotalWorldData = 0, 
+						gTotalObjectData = 0, 
+						gTotalTextureData = 0;
+U32						gSimPingCount = 0;
+LLUnit<LLUnits::Bits, U32>		gObjectData = 0;
 F32		gAvgSimPing = 0.f;
-U32     gTotalTextureBytesPerBoostLevel[LLViewerTexture::MAX_GL_IMAGE_CATEGORY] = {0};
+LLUnit<LLUnits::Bytes, U32>		gTotalTextureBytesPerBoostLevel[LLViewerTexture::MAX_GL_IMAGE_CATEGORY] = {0};
 
 extern U32  gVisCompared;
 extern U32  gVisTested;
@@ -426,59 +303,61 @@ LLFrameTimer gTextureTimer;
 
 void update_statistics()
 {
-	gTotalWorldBytes += gVLManager.getTotalBytes();
-	gTotalObjectBytes += gObjectBits / 8;
-
-	LLViewerStats& stats = LLViewerStats::instance();
+	gTotalWorldData += gVLManager.getTotalBytes();
+	gTotalObjectData += gObjectData;
 
 	// make sure we have a valid time delta for this frame
 	if (gFrameIntervalSeconds > 0.f)
 	{
 		if (gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK)
 		{
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_MOUSELOOK_SECONDS, gFrameIntervalSeconds);
+			add(LLStatViewer::MOUSELOOK_TIME, gFrameIntervalSeconds);
 		}
 		else if (gAgentCamera.getCameraMode() == CAMERA_MODE_CUSTOMIZE_AVATAR)
 		{
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_AVATAR_EDIT_SECONDS, gFrameIntervalSeconds);
+			add(LLStatViewer::AVATAR_EDIT_TIME, gFrameIntervalSeconds);
 		}
 		else if (LLFloaterReg::instanceVisible("build"))
 		{
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_TOOLBOX_SECONDS, gFrameIntervalSeconds);
+			add(LLStatViewer::TOOLBOX_TIME, gFrameIntervalSeconds);
 		}
 	}
-	stats.setStat(LLViewerStats::ST_ENABLE_VBO, (F64)gSavedSettings.getBOOL("RenderVBOEnable"));
-	stats.setStat(LLViewerStats::ST_LIGHTING_DETAIL, (F64)gPipeline.getLightingDetail());
-	stats.setStat(LLViewerStats::ST_DRAW_DIST, (F64)gSavedSettings.getF32("RenderFarClip"));
-	stats.setStat(LLViewerStats::ST_CHAT_BUBBLES, (F64)gSavedSettings.getBOOL("UseChatBubbles"));
+	sample(LLStatViewer::ENABLE_VBO, (F64)gSavedSettings.getBOOL("RenderVBOEnable"));
+	sample(LLStatViewer::LIGHTING_DETAIL, (F64)gPipeline.getLightingDetail());
+	sample(LLStatViewer::DRAW_DISTANCE, (F64)gSavedSettings.getF32("RenderFarClip"));
+	sample(LLStatViewer::CHAT_BUBBLES, (F64)gSavedSettings.getBOOL("UseChatBubbles"));
 
-	stats.setStat(LLViewerStats::ST_FRAME_SECS, gDebugView->mFastTimerView->getTime("Frame"));
+	sample(LLStatViewer::FRAME_STACKTIME, LLTrace::Seconds(gDebugView->mFastTimerView->getTime("Frame")));
 	F64 idle_secs = gDebugView->mFastTimerView->getTime("Idle");
 	F64 network_secs = gDebugView->mFastTimerView->getTime("Network");
-	stats.setStat(LLViewerStats::ST_UPDATE_SECS, idle_secs - network_secs);
-	stats.setStat(LLViewerStats::ST_NETWORK_SECS, network_secs);
-	stats.setStat(LLViewerStats::ST_IMAGE_SECS, gDebugView->mFastTimerView->getTime("Update Images"));
-	stats.setStat(LLViewerStats::ST_REBUILD_SECS, gDebugView->mFastTimerView->getTime("Sort Draw State"));
-	stats.setStat(LLViewerStats::ST_RENDER_SECS, gDebugView->mFastTimerView->getTime("Geometry"));
+	sample(LLStatViewer::UPDATE_STACKTIME, LLTrace::Seconds(idle_secs - network_secs));
+	sample(LLStatViewer::NETWORK_STACKTIME, LLTrace::Seconds(network_secs));
+	sample(LLStatViewer::IMAGE_STACKTIME, LLTrace::Seconds(gDebugView->mFastTimerView->getTime("Update Images")));
+	sample(LLStatViewer::REBUILD_STACKTIME, LLTrace::Seconds(gDebugView->mFastTimerView->getTime("Sort Draw State")));
+	sample(LLStatViewer::RENDER_STACKTIME, LLTrace::Seconds(gDebugView->mFastTimerView->getTime("Geometry")));
 		
 	LLCircuitData *cdp = gMessageSystem->mCircuitInfo.findCircuit(gAgent.getRegion()->getHost());
 	if (cdp)
 	{
-		stats.mSimPingStat.addValue(cdp->getPingDelay());
+		sample(LLStatViewer::SIM_PING, LLTrace::Milliseconds(cdp->getPingDelay()));
 		gAvgSimPing = ((gAvgSimPing * (F32)gSimPingCount) + (F32)(cdp->getPingDelay())) / ((F32)gSimPingCount + 1);
 		gSimPingCount++;
 	}
 	else
 	{
-		stats.mSimPingStat.addValue(10000);
+		sample(LLStatViewer::SIM_PING, LLTrace::Seconds(10));
 	}
 
-	stats.mFPSStat.addValue(1);
+	add(LLStatViewer::FPS, 1);
+	if (LLTrace::get_frame_recording().getTotalRecording().getSampleCount(LLStatViewer::FPS))
+	{
+		sample(LLStatViewer::FPS_SAMPLE, LLTrace::get_frame_recording().getTotalRecording().getPerSec(LLStatViewer::FPS));
+	}
 	F32 layer_bits = (F32)(gVLManager.getLandBits() + gVLManager.getWindBits() + gVLManager.getCloudBits());
-	stats.mLayersKBitStat.addValue(layer_bits/1024.f);
-	stats.mObjectKBitStat.addValue(gObjectBits/1024.f);
-	stats.mVFSPendingOperations.addValue(LLVFile::getVFSThread()->getPending());
-	stats.mAssetKBitStat.addValue(gTransferManager.getTransferBitsIn(LLTCT_ASSET)/1024.f);
+	add(LLStatViewer::LAYERS_KBIT, LLTrace::Bits(layer_bits));
+	add(LLStatViewer::OBJECT_KBIT, gObjectData);
+	sample(LLStatViewer::PENDING_VFS_OPERATIONS, LLVFile::getVFSThread()->getPending());
+	add(LLStatViewer::ASSET_KBIT, LLTrace::Bits(gTransferManager.getTransferBitsIn(LLTCT_ASSET)));
 	gTransferManager.resetTransferBitsIn(LLTCT_ASSET);
 
 	if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
@@ -499,14 +378,14 @@ void update_statistics()
 			visible_avatar_frames = 1.f;
 			avg_visible_avatars = (avg_visible_avatars * (F32)(visible_avatar_frames - 1.f) + visible_avatars) / visible_avatar_frames;
 		}
-		stats.setStat(LLViewerStats::ST_VISIBLE_AVATARS, (F64)avg_visible_avatars);
+		sample(LLStatViewer::VISIBLE_AVATARS, (F64)avg_visible_avatars);
 	}
 	LLWorld::getInstance()->updateNetStats();
 	LLWorld::getInstance()->requestCacheMisses();
 	
 	// Reset all of these values.
 	gVLManager.resetBitCounts();
-	gObjectBits = 0;
+	gObjectData = 0;
 //	gDecodedBits = 0;
 
 	// Only update texture stats periodically so that they are less noisy
@@ -515,11 +394,7 @@ void update_statistics()
 		static LLFrameTimer texture_stats_timer;
 		if (texture_stats_timer.getElapsedTimeF32() >= texture_stats_freq)
 		{
-			stats.mTextureKBitStat.addValue(LLViewerTextureList::sTextureBits/1024.f);
-			stats.mTexturePacketsStat.addValue(LLViewerTextureList::sTexturePackets);
-			gTotalTextureBytes += LLViewerTextureList::sTextureBits / 8;
-			LLViewerTextureList::sTextureBits = 0;
-			LLViewerTextureList::sTexturePackets = 0;
+			gTotalTextureData = LLTrace::Bytes(LLViewerStats::instance().getRecording().getSum(LLStatViewer::TEXTURE_KBIT));
 			texture_stats_timer.reset();
 		}
 	}
@@ -668,9 +543,9 @@ void send_stats()
 
 	LLSD &download = body["downloads"];
 
-	download["world_kbytes"] = gTotalWorldBytes / 1024.0;
-	download["object_kbytes"] = gTotalObjectBytes / 1024.0;
-	download["texture_kbytes"] = gTotalTextureBytes / 1024.0;
+	download["world_kbytes"] = LLTrace::Kilobytes(gTotalWorldData).value();
+	download["object_kbytes"] = LLTrace::Kilobytes(gTotalObjectData).value();
+	download["texture_kbytes"] = LLTrace::Kilobytes(gTotalTextureData).value();
 	download["mesh_kbytes"] = LLMeshRepository::sBytesReceived/1024.0;
 
 	LLSD &in = body["stats"]["net"]["in"];
@@ -794,7 +669,7 @@ void LLViewerStats::PhaseMap::clearPhases()
 	mPhaseMap.clear();
 }
 
-LLSD LLViewerStats::PhaseMap::dumpPhases()
+LLSD LLViewerStats::PhaseMap::asLLSD()
 {
 	LLSD result;
 	for (phase_map_t::iterator iter = mPhaseMap.begin(); iter != mPhaseMap.end(); ++iter)
diff --git a/indra/newview/llviewerstats.h b/indra/newview/llviewerstats.h
index e02a4ccdc7..e94ba23163 100644
--- a/indra/newview/llviewerstats.h
+++ b/indra/newview/llviewerstats.h
@@ -1,5 +1,5 @@
 /** 
- * @file llviewerstats.h
+ * @file llviewerim_peningtats.h
  * @brief LLViewerStats class header file
  *
  * $LicenseInfo:firstyear=2002&license=viewerlgpl$
@@ -27,168 +27,181 @@
 #ifndef LL_LLVIEWERSTATS_H
 #define LL_LLVIEWERSTATS_H
 
-#include "llstat.h"
+#include "llstatenums.h"
 #include "lltextureinfo.h"
+#include "lltracerecording.h"
+#include "lltrace.h"
+
+namespace LLStatViewer
+{
+
+struct SimMeasurementSampler : public LLInstanceTracker<SimMeasurementSampler, ESimStatID>
+{
+	SimMeasurementSampler(ESimStatID id)
+	:	LLInstanceTracker<SimMeasurementSampler, ESimStatID>(id)
+	{}
+	virtual ~SimMeasurementSampler() {}
+
+	virtual void sample(F64 value) = 0;
+};
+
+template<typename T = F64>
+struct SimMeasurement : public LLTrace::MeasurementStatHandle<T>, public SimMeasurementSampler
+{
+	SimMeasurement(const char* name, const char* description, ESimStatID stat_id)
+	:	LLTrace::MeasurementStatHandle<T>(name, description),
+		SimMeasurementSampler(stat_id)	
+	{}
+
+	using SimMeasurementSampler::getInstance;
+
+	/*virtual*/ void sample(F64 value)
+	{
+		LLTrace::sample(*this, value);
+	}
+};
+
+template<typename T, typename VALUE_T>
+void sample(SimMeasurement<T>& measurement, VALUE_T value)
+{
+	LLTrace::sample(measurement, value);
+}
+extern LLTrace::CountStatHandle<>						FPS,
+											PACKETS_IN,
+											PACKETS_LOST,
+											PACKETS_OUT,
+											TEXTURE_PACKETS,
+											TRIANGLES_DRAWN,
+											CHAT_COUNT,
+											IM_COUNT,
+											OBJECT_CREATE,
+											OBJECT_REZ,
+											LOADING_WEARABLES_LONG_DELAY,
+											LOGIN_TIMEOUTS,
+											LSL_SAVES,
+											ANIMATION_UPLOADS,
+											FLY,
+											TELEPORT,
+											DELETE_OBJECT,
+											SNAPSHOT,
+											UPLOAD_SOUND,
+											UPLOAD_TEXTURE,
+											EDIT_TEXTURE,
+											KILLED,
+											FRAMETIME_DOUBLED,
+											TEX_BAKES,
+											TEX_REBAKES,
+											NUM_NEW_OBJECTS;
+
+
+extern LLTrace::CountStatHandle<LLTrace::Kilobits>	KBIT,
+											LAYERS_KBIT,
+											OBJECT_KBIT,
+											ASSET_KBIT,
+											TEXTURE_KBIT,
+											ACTUAL_IN_KBIT,
+											ACTUAL_OUT_KBIT;
+
+extern LLTrace::CountStatHandle<LLTrace::Seconds>		AVATAR_EDIT_TIME,
+											TOOLBOX_TIME,
+											MOUSELOOK_TIME,
+											FPS_10_TIME,
+											FPS_8_TIME,
+											FPS_2_TIME,
+											SIM_20_FPS_TIME,
+											SIM_PHYSICS_20_FPS_TIME,
+											LOSS_5_PERCENT_TIME;
+
+extern SimMeasurement<>						SIM_TIME_DILATION,
+											SIM_FPS,
+											SIM_PHYSICS_FPS,
+											SIM_AGENT_UPS,
+											SIM_SCRIPT_EPS,
+											SIM_SKIPPED_SILHOUETTE,
+											SIM_SKIPPED_CHARACTERS_PERCENTAGE,
+											SIM_MAIN_AGENTS,
+											SIM_CHILD_AGENTS,
+											SIM_OBJECTS,
+											SIM_ACTIVE_OBJECTS,
+											SIM_ACTIVE_SCRIPTS,
+											SIM_PERCENTAGE_SCRIPTS_RUN,
+											SIM_IN_PACKETS_PER_SEC,
+											SIM_OUT_PACKETS_PER_SEC,
+											SIM_PENDING_DOWNLOADS,
+											SIM_PENDING_UPLOADS,
+											SIM_PENDING_LOCAL_UPLOADS,
+											SIM_PHYSICS_PINNED_TASKS,
+											SIM_PHYSICS_LOD_TASKS;
+
+extern LLTrace::MeasurementStatHandle<>		FPS_SAMPLE,
+											NUM_IMAGES,
+											NUM_RAW_IMAGES,
+											NUM_OBJECTS,
+											NUM_ACTIVE_OBJECTS,
+											NUM_SIZE_CULLED,
+											NUM_VIS_CULLED,
+											ENABLE_VBO,
+											LIGHTING_DETAIL,
+											VISIBLE_AVATARS,
+											SHADER_OBJECTS,
+											DRAW_DISTANCE,
+											CHAT_BUBBLES,
+											PENDING_VFS_OPERATIONS,
+											PACKETS_LOST_PERCENT,
+											WINDOW_WIDTH,
+											WINDOW_HEIGHT;
+
+extern LLTrace::MeasurementStatHandle<LLTrace::Meters> AGENT_POSITION_SNAP;
+
+extern LLTrace::MeasurementStatHandle<LLTrace::Bytes>	DELTA_BANDWIDTH,
+														MAX_BANDWIDTH,
+														GL_TEX_MEM,
+														GL_BOUND_MEM,
+														RAW_MEM,
+														FORMATTED_MEM;
+
+extern SimMeasurement<LLTrace::Milliseconds>	SIM_FRAME_TIME,
+												SIM_NET_TIME,
+												SIM_OTHER_TIME,
+												SIM_PHYSICS_TIME,
+												SIM_PHYSICS_STEP_TIME,
+												SIM_PHYSICS_SHAPE_UPDATE_TIME,
+												SIM_PHYSICS_OTHER_TIME,
+												SIM_AI_TIME,
+												SIM_AGENTS_TIME,
+												SIM_IMAGES_TIME,
+												SIM_SCRIPTS_TIME,
+												SIM_SPARE_TIME,
+												SIM_SLEEP_TIME,
+												SIM_PUMP_IO_TIME;
+
+extern SimMeasurement<LLTrace::Bytes>			SIM_UNACKED_BYTES,
+												SIM_PHYSICS_MEM;
+
+
+extern LLTrace::MeasurementStatHandle<LLTrace::Milliseconds>	FRAMETIME_JITTER,
+													FRAMETIME_SLEW,
+													LOGIN_SECONDS,
+													REGION_CROSSING_TIME,
+													FRAME_STACKTIME,
+													UPDATE_STACKTIME,
+													NETWORK_STACKTIME,
+													IMAGE_STACKTIME,
+													REBUILD_STACKTIME,
+													RENDER_STACKTIME,
+													SIM_PING;
+}
 
 class LLViewerStats : public LLSingleton<LLViewerStats>
 {
 public:
-	LLStat	mKBitStat,
-			mLayersKBitStat,
-			mObjectKBitStat,
-			mAssetKBitStat,
-			mTextureKBitStat,
-			mVFSPendingOperations,
-			mObjectsDrawnStat,
-			mObjectsCulledStat,
-			mObjectsTestedStat,
-			mObjectsComparedStat,
-			mObjectsOccludedStat,
-			mFPSStat,
-			mPacketsInStat,
-			mPacketsLostStat,
-			mPacketsOutStat,
-			mPacketsLostPercentStat,
-			mTexturePacketsStat,
-			mActualInKBitStat,	// From the packet ring (when faking a bad connection)
-			mActualOutKBitStat,	// From the packet ring (when faking a bad connection)
-			mTrianglesDrawnStat;
-
-	// Simulator stats
-	LLStat	mSimTimeDilation,
-
-			mSimFPS,
-			mSimPhysicsFPS,
-			mSimAgentUPS,
-			mSimScriptEPS,
-
-			mSimFrameMsec,
-			mSimNetMsec,
-			mSimSimOtherMsec,
-			mSimSimPhysicsMsec,
-
-			mSimSimPhysicsStepMsec,
-			mSimSimPhysicsShapeUpdateMsec,
-			mSimSimPhysicsOtherMsec,
-			mSimSimAIStepMsec,
-			mSimSimSkippedSilhouetteSteps,
-			mSimSimPctSteppedCharacters,
-
-			mSimAgentMsec,
-			mSimImagesMsec,
-			mSimScriptMsec,
-			mSimSpareMsec,
-			mSimSleepMsec,
-			mSimPumpIOMsec,
-
-			mSimMainAgents,
-			mSimChildAgents,
-			mSimObjects,
-			mSimActiveObjects,
-			mSimActiveScripts,
-			mSimPctScriptsRun,
-
-			mSimInPPS,
-			mSimOutPPS,
-			mSimPendingDownloads,
-			mSimPendingUploads,
-			mSimPendingLocalUploads,
-			mSimTotalUnackedBytes,
-
-			mPhysicsPinnedTasks,
-			mPhysicsLODTasks,
-			mPhysicsMemoryAllocated,
-
-			mSimPingStat,
-
-			mNumImagesStat,
-			mNumRawImagesStat,
-			mGLTexMemStat,
-			mGLBoundMemStat,
-			mRawMemStat,
-			mFormattedMemStat,
-
-			mNumObjectsStat,
-			mNumActiveObjectsStat,
-			mNumNewObjectsStat,
-			mNumSizeCulledStat,
-			mNumVisCulledStat;
-
 	void resetStats();
+
 public:
-	// If you change this, please also add a corresponding text label in llviewerstats.cpp
-	enum EStatType
-	{
-		ST_VERSION = 0,
-		ST_AVATAR_EDIT_SECONDS = 1,
-		ST_TOOLBOX_SECONDS = 2,
-		ST_CHAT_COUNT = 3,
-		ST_IM_COUNT = 4,
-		ST_FULLSCREEN_BOOL = 5,
-		ST_RELEASE_COUNT= 6,
-		ST_CREATE_COUNT = 7,
-		ST_REZ_COUNT = 8,
-		ST_FPS_10_SECONDS = 9,
-		ST_FPS_2_SECONDS = 10,
-		ST_MOUSELOOK_SECONDS = 11,
-		ST_FLY_COUNT = 12,
-		ST_TELEPORT_COUNT = 13,
-		ST_OBJECT_DELETE_COUNT = 14,
-		ST_SNAPSHOT_COUNT = 15,
-		ST_UPLOAD_SOUND_COUNT = 16,
-		ST_UPLOAD_TEXTURE_COUNT = 17,
-		ST_EDIT_TEXTURE_COUNT = 18,
-		ST_KILLED_COUNT = 19,
-		ST_FRAMETIME_JITTER = 20,
-		ST_FRAMETIME_SLEW = 21,
-		ST_INVENTORY_TOO_LONG = 22,
-		ST_WEARABLES_TOO_LONG = 23,
-		ST_LOGIN_SECONDS = 24,
-		ST_LOGIN_TIMEOUT_COUNT = 25,
-		ST_HAS_BAD_TIMER = 26,
-		ST_DOWNLOAD_FAILED = 27,
-		ST_LSL_SAVE_COUNT = 28,
-		ST_UPLOAD_ANIM_COUNT = 29,
-		ST_FPS_8_SECONDS = 30,
-		ST_SIM_FPS_20_SECONDS = 31,
-		ST_PHYS_FPS_20_SECONDS = 32,
-		ST_LOSS_05_SECONDS = 33,
-		ST_FPS_DROP_50_RATIO = 34,
-		ST_ENABLE_VBO = 35,
-		ST_DELTA_BANDWIDTH = 36,
-		ST_MAX_BANDWIDTH = 37,
-		ST_LIGHTING_DETAIL = 38,
-		ST_VISIBLE_AVATARS = 39,
-		ST_SHADER_OBJECTS = 40,
-		ST_SHADER_ENVIRONMENT = 41,
-		ST_DRAW_DIST = 42,
-		ST_CHAT_BUBBLES = 43,
-		ST_SHADER_AVATAR = 44,
-		ST_FRAME_SECS = 45,
-		ST_UPDATE_SECS = 46,
-		ST_NETWORK_SECS = 47,
-		ST_IMAGE_SECS = 48,
-		ST_REBUILD_SECS = 49,
-		ST_RENDER_SECS = 50,
-		ST_CROSSING_AVG = 51,
-		ST_CROSSING_MAX = 52,
-		ST_LIBXUL_WIDGET_USED = 53, // Unused
-		ST_WINDOW_WIDTH = 54,
-		ST_WINDOW_HEIGHT = 55,
-		ST_TEX_BAKES = 56,
-		ST_TEX_REBAKES = 57,
-		
-		ST_COUNT = 58
-	};
 
 	LLViewerStats();
 	~LLViewerStats();
 
-	// all return latest value of given stat
-	F64 getStat(EStatType type) const;
-	F64 setStat(EStatType type, F64 value);		// set the stat to value
-	F64 incStat(EStatType type, F64 value = 1.f);	// add value to the stat
-
 	void updateFrameStats(const F64 time_diff);
 	
 	void addToMessage(LLSD &body) const;
@@ -263,7 +276,7 @@ public:
 			mCountOfNextUpdatesToIgnore = 0;
 		}
 		
-		inline LLSD getData() const
+		inline LLSD asLLSD() const
 		{
 			LLSD data;
 			data["mean"] = getMean();
@@ -275,8 +288,6 @@ public:
 		}
 	};
 
-	StatsAccumulator mAgentPositionSnaps;
-
 	// Phase tracking (originally put in for avatar rezzing), tracking
 	// progress of active/completed phases for activities like outfit changing.
 	typedef std::map<std::string,LLFrameTimer>	phase_map_t;
@@ -293,13 +304,16 @@ public:
 		void			stopPhase(const std::string& phase_name);
 		void			stopAllPhases();
 		void			clearPhases();
-		LLSD			dumpPhases();
+		LLSD			asLLSD();
 		static StatsAccumulator& getPhaseStats(const std::string& phase_name);
 		static void recordPhaseStat(const std::string& phase_name, F32 value);
 	};
 
+	LLTrace::Recording& getRecording() { return mRecording; }
+	const LLTrace::Recording& getRecording() const { return mRecording; }
+
 private:
-	F64	mStats[ST_COUNT];
+	LLTrace::Recording				mRecording;
 
 	F64 mLastTimeDiff;  // used for time stat updates
 };
@@ -311,7 +325,7 @@ void update_statistics();
 void send_stats();
 
 extern LLFrameTimer gTextureTimer;
-extern U32	gTotalTextureBytes;
-extern U32  gTotalObjectBytes;
-extern U32  gTotalTextureBytesPerBoostLevel[] ;
+extern LLUnit<LLUnits::Bytes, U32>	gTotalTextureData;
+extern LLUnit<LLUnits::Bytes, U32>  gTotalObjectData;
+extern LLUnit<LLUnits::Bytes, U32>  gTotalTextureBytesPerBoostLevel[] ;
 #endif // LL_LLVIEWERSTATS_H
diff --git a/indra/newview/llviewerstatsrecorder.cpp b/indra/newview/llviewerstatsrecorder.cpp
index 91e485d01b..61d0f02fc1 100644
--- a/indra/newview/llviewerstatsrecorder.cpp
+++ b/indra/newview/llviewerstatsrecorder.cpp
@@ -216,18 +216,21 @@ void LLViewerStatsRecorder::writeToLog( F32 interval )
 				<< "Texture Fetch bps\t"
 				<< "\n";
 
-			fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile );
+			if (fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile ) != data_msg.str().size())
+			{
+				llwarns << "Failed to write log file." << llendl;
+			}
 		}
 		else
-		{
-			llwarns << "Couldn't open " << STATS_FILE_NAME << " for logging." << llendl;
+	{
+			//llwarns << "Couldn't open " << STATS_FILE_NAME << " for logging." << llendl;
 			return;
 		}
 	}
 
-	std::ostringstream data_msg;
+		std::ostringstream data_msg;
 
-	data_msg << getTimeSinceStart()
+		data_msg << getTimeSinceStart()
 		<< "\t " << mObjectCacheHitCount
 		<< "\t" << mObjectCacheMissFullCount
 		<< "\t" << mObjectCacheMissCrcCount
@@ -247,9 +250,12 @@ void LLViewerStatsRecorder::writeToLog( F32 interval )
 		<< "\t" << (mObjectTerseUpdatesSize * 8 / delta_time)
 		<< "\t" << (mObjectCacheMissResponsesSize * 8 / delta_time)
 		<< "\t" << (mTextureFetchSize * 8 / delta_time)
-		<< "\n";
+			<< "\n";
 
-	fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile );
+	if (fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile ) != data_msg.str().size())
+	{
+		llwarns << "Failed to write log file." << llendl;
+	}
 	clearStats();
 }
 
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 08fcb60d03..7edfa6adfa 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -64,6 +64,11 @@
 #include "lltexturecache.h"
 ///////////////////////////////////////////////////////////////////////////////
 
+// extern
+const LLUnit<LLUnits::Megabytes, S32> gMinVideoRam = 32;
+const LLUnit<LLUnits::Megabytes, S32> gMaxVideoRam = 512;
+
+
 // statics
 LLPointer<LLViewerTexture>        LLViewerTexture::sNullImagep = NULL;
 LLPointer<LLViewerTexture>        LLViewerTexture::sBlackImagep = NULL;
@@ -82,11 +87,11 @@ S32 LLViewerTexture::sAuxCount = 0;
 LLFrameTimer LLViewerTexture::sEvaluationTimer;
 F32 LLViewerTexture::sDesiredDiscardBias = 0.f;
 F32 LLViewerTexture::sDesiredDiscardScale = 1.1f;
-S32 LLViewerTexture::sBoundTextureMemoryInBytes = 0;
-S32 LLViewerTexture::sTotalTextureMemoryInBytes = 0;
-S32 LLViewerTexture::sMaxBoundTextureMemInMegaBytes = 0;
-S32 LLViewerTexture::sMaxTotalTextureMemInMegaBytes = 0;
-S32 LLViewerTexture::sMaxDesiredTextureMemInBytes = 0 ;
+LLUnit<LLUnits::Bytes, S32> LLViewerTexture::sBoundTextureMemory = 0;
+LLUnit<LLUnits::Bytes, S32> LLViewerTexture::sTotalTextureMemory = 0;
+LLUnit<LLUnits::Megabytes, S32> LLViewerTexture::sMaxBoundTextureMem = 0;
+LLUnit<LLUnits::Megabytes, S32> LLViewerTexture::sMaxTotalTextureMem = 0;
+LLUnit<LLUnits::Bytes, S32> LLViewerTexture::sMaxDesiredTextureMem = 0 ;
 S8  LLViewerTexture::sCameraMovingDiscardBias = 0 ;
 F32 LLViewerTexture::sCameraMovingBias = 0.0f ;
 S32 LLViewerTexture::sMaxSculptRez = 128 ; //max sculpt image size
@@ -518,17 +523,17 @@ void LLViewerTexture::updateClass(const F32 velocity, const F32 angular_velocity
 		LLViewerMediaTexture::updateClass() ;
 	}
 
-	sBoundTextureMemoryInBytes = LLImageGL::sBoundTextureMemoryInBytes;//in bytes
-	sTotalTextureMemoryInBytes = LLImageGL::sGlobalTextureMemoryInBytes;//in bytes
-	sMaxBoundTextureMemInMegaBytes = gTextureList.getMaxResidentTexMem();//in MB	
-	sMaxTotalTextureMemInMegaBytes = gTextureList.getMaxTotalTextureMem() ;//in MB
-	sMaxDesiredTextureMemInBytes = MEGA_BYTES_TO_BYTES(sMaxTotalTextureMemInMegaBytes) ; //in Bytes, by default and when total used texture memory is small.
+	sBoundTextureMemory = LLImageGL::sBoundTextureMemory;//in bytes
+	sTotalTextureMemory = LLImageGL::sGlobalTextureMemory;//in bytes
+	sMaxBoundTextureMem = gTextureList.getMaxResidentTexMem();//in MB	
+	sMaxTotalTextureMem = gTextureList.getMaxTotalTextureMem() ;//in MB
+	sMaxDesiredTextureMem = sMaxTotalTextureMem ; //in Bytes, by default and when total used texture memory is small.
 
-	if (BYTES_TO_MEGA_BYTES(sBoundTextureMemoryInBytes) >= sMaxBoundTextureMemInMegaBytes ||
-		BYTES_TO_MEGA_BYTES(sTotalTextureMemoryInBytes) >= sMaxTotalTextureMemInMegaBytes)
+	if (sBoundTextureMemory >= sMaxBoundTextureMem ||
+		sTotalTextureMemory >= sMaxTotalTextureMem)
 	{
-		//when texture memory overflows, lower down the threashold to release the textures more aggressively.
-		sMaxDesiredTextureMemInBytes = llmin((S32)(sMaxDesiredTextureMemInBytes * 0.75f) , MEGA_BYTES_TO_BYTES(MAX_VIDEO_RAM_IN_MEGA_BYTES)) ;//512 MB
+		//when texture memory overflows, lower down the threshold to release the textures more aggressively.
+		sMaxDesiredTextureMem = llmin(sMaxDesiredTextureMem * 0.75f, LLUnit<LLUnits::Bytes, S32>(gMaxVideoRam));
 	
 		// If we are using more texture memory than we should,
 		// scale up the desired discard level
@@ -544,8 +549,8 @@ void LLViewerTexture::updateClass(const F32 velocity, const F32 angular_velocity
 		sEvaluationTimer.reset();
 	}
 	else if (sDesiredDiscardBias > 0.0f &&
-			 BYTES_TO_MEGA_BYTES(sBoundTextureMemoryInBytes) < sMaxBoundTextureMemInMegaBytes * texmem_lower_bound_scale &&
-			 BYTES_TO_MEGA_BYTES(sTotalTextureMemoryInBytes) < sMaxTotalTextureMemInMegaBytes * texmem_lower_bound_scale)
+			 sBoundTextureMemory < sMaxBoundTextureMem * texmem_lower_bound_scale &&
+			 sTotalTextureMemory < sMaxTotalTextureMem * texmem_lower_bound_scale)
 	{			 
 		// If we are using less texture memory than we should,
 		// scale down the desired discard level
@@ -563,8 +568,8 @@ void LLViewerTexture::updateClass(const F32 velocity, const F32 angular_velocity
 	sCameraMovingBias = llmax(0.2f * camera_moving_speed, 2.0f * camera_angular_speed - 1);
 	sCameraMovingDiscardBias = (S8)(sCameraMovingBias);
 
-	LLViewerTexture::sFreezeImageScalingDown = (BYTES_TO_MEGA_BYTES(sBoundTextureMemoryInBytes) < 0.75f * sMaxBoundTextureMemInMegaBytes * texmem_middle_bound_scale) &&
-				(BYTES_TO_MEGA_BYTES(sTotalTextureMemoryInBytes) < 0.75f * sMaxTotalTextureMemInMegaBytes * texmem_middle_bound_scale) ;
+	LLViewerTexture::sFreezeImageScalingDown = (sBoundTextureMemory < 0.75f * sMaxBoundTextureMem * texmem_middle_bound_scale) &&
+				(sTotalTextureMemory < 0.75f * sMaxTotalTextureMem * texmem_middle_bound_scale) ;
 }
 
 //end of static functions
@@ -961,6 +966,12 @@ void LLViewerTexture::setCachedRawImage(S32 discard_level, LLImageRaw* imageraw)
 	//nothing here.
 }
 
+BOOL LLViewerTexture::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height)
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->setSubImageFromFrameBuffer(fb_x, fb_y, x_pos, y_pos, width, height);
+}
+
 void LLViewerTexture::setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes)
 {
 	llassert(mGLTexturep.notNull()) ;
@@ -3330,13 +3341,13 @@ void LLViewerLODTexture::processTextureStats()
 				scaleDown() ;
 			}
 			// Limit the amount of GL memory bound each frame
-			else if ( BYTES_TO_MEGA_BYTES(sBoundTextureMemoryInBytes) > sMaxBoundTextureMemInMegaBytes * texmem_middle_bound_scale &&
+			else if ( sBoundTextureMemory > sMaxBoundTextureMem * texmem_middle_bound_scale &&
 				(!getBoundRecently() || mDesiredDiscardLevel >= mCachedRawDiscardLevel))
 			{
 				scaleDown() ;
 			}
 			// Only allow GL to have 2x the video card memory
-			else if ( BYTES_TO_MEGA_BYTES(sTotalTextureMemoryInBytes) > sMaxTotalTextureMemInMegaBytes*texmem_middle_bound_scale &&
+			else if ( sTotalTextureMemory > sMaxTotalTextureMem * texmem_middle_bound_scale &&
 				(!getBoundRecently() || mDesiredDiscardLevel >= mCachedRawDiscardLevel))
 			{
 				scaleDown() ;
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index 2e7949e9a3..0a9778ce76 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -34,12 +34,13 @@
 #include "llgltypes.h"
 #include "llrender.h"
 #include "llmetricperformancetester.h"
+#include "llunit.h"
 
 #include <map>
 #include <list>
 
-#define MIN_VIDEO_RAM_IN_MEGA_BYTES    32
-#define MAX_VIDEO_RAM_IN_MEGA_BYTES    512 // 512MB max for performance reasons.
+extern const LLUnit<LLUnits::Megabytes, S32> gMinVideoRam;
+extern const LLUnit<LLUnits::Megabytes, S32> gMaxVideoRam;
 
 class LLFace;
 class LLImageGL ;
@@ -211,6 +212,7 @@ public:
 	BOOL       createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, BOOL to_create = TRUE, S32 category = LLViewerTexture::OTHER);
 	virtual void setCachedRawImage(S32 discard_level, LLImageRaw* imageraw) ;
 
+	BOOL       setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height);
 	void       setFilteringOption(LLTexUnit::eTextureFilterOptions option);
 	void       setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, BOOL swap_bytes = FALSE);
 	void       setAddressMode(LLTexUnit::eTextureAddressMode mode);
@@ -323,11 +325,11 @@ public:
 	static LLFrameTimer sEvaluationTimer;
 	static F32 sDesiredDiscardBias;
 	static F32 sDesiredDiscardScale;
-	static S32 sBoundTextureMemoryInBytes;
-	static S32 sTotalTextureMemoryInBytes;
-	static S32 sMaxBoundTextureMemInMegaBytes;
-	static S32 sMaxTotalTextureMemInMegaBytes;
-	static S32 sMaxDesiredTextureMemInBytes ;
+	static LLUnit<LLUnits::Bytes, S32> sBoundTextureMemory;
+	static LLUnit<LLUnits::Bytes, S32> sTotalTextureMemory;
+	static LLUnit<LLUnits::Megabytes, S32> sMaxBoundTextureMem;
+	static LLUnit<LLUnits::Megabytes, S32> sMaxTotalTextureMem;
+	static LLUnit<LLUnits::Bytes, S32> sMaxDesiredTextureMem ;
 	static S8  sCameraMovingDiscardBias;
 	static F32 sCameraMovingBias;
 	static S32 sMaxSculptRez ;
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index b9f5c432d0..0066c09720 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -58,21 +58,14 @@
 #include "pipeline.h"
 #include "llappviewer.h"
 #include "llxuiparser.h"
+#include "lltracerecording.h"
 #include "llviewerdisplay.h"
 
 ////////////////////////////////////////////////////////////////////////////
 
 void (*LLViewerTextureList::sUUIDCallback)(void **, const LLUUID&) = NULL;
 
-U32 LLViewerTextureList::sTextureBits = 0;
-U32 LLViewerTextureList::sTexturePackets = 0;
 S32 LLViewerTextureList::sNumImages = 0;
-LLStat LLViewerTextureList::sNumImagesStat("Num Images", 32, TRUE);
-LLStat LLViewerTextureList::sNumRawImagesStat("Num Raw Images", 32, TRUE);
-LLStat LLViewerTextureList::sGLTexMemStat("GL Texture Mem", 32, TRUE);
-LLStat LLViewerTextureList::sGLBoundMemStat("GL Bound Mem", 32, TRUE);
-LLStat LLViewerTextureList::sRawMemStat("Raw Image Mem", 32, TRUE);
-LLStat LLViewerTextureList::sFormattedMemStat("Formatted Image Mem", 32, TRUE);
 
 LLViewerTextureList gTextureList;
 static LLFastTimer::DeclareTimer FTM_PROCESS_IMAGES("Process Images");
@@ -606,9 +599,11 @@ static LLFastTimer::DeclareTimer FTM_IMAGE_FETCH("Fetch");
 static LLFastTimer::DeclareTimer FTM_FAST_CACHE_IMAGE_FETCH("Fast Cache Fetch");
 static LLFastTimer::DeclareTimer FTM_IMAGE_CREATE("Create");
 static LLFastTimer::DeclareTimer FTM_IMAGE_STATS("Stats");
+static LLFastTimer::DeclareTimer FTM_UPDATE_IMAGES("Update Images");
 
 void LLViewerTextureList::updateImages(F32 max_time)
 {
+	LLFastTimer _(FTM_UPDATE_IMAGES);
 	static BOOL cleared = FALSE;
 	if(gTeleportDisplay)
 	{
@@ -622,14 +617,19 @@ void LLViewerTextureList::updateImages(F32 max_time)
 	}
 	cleared = FALSE;
 
-	LLAppViewer::getTextureFetch()->setTextureBandwidth(LLViewerStats::getInstance()->mTextureKBitStat.getMeanPerSec());
+	LLTrace::Recording& recording = LLTrace::get_frame_recording().getTotalRecording();
 
-	LLViewerStats::getInstance()->mNumImagesStat.addValue(sNumImages);
-	LLViewerStats::getInstance()->mNumRawImagesStat.addValue(LLImageRaw::sRawImageCount);
-	LLViewerStats::getInstance()->mGLTexMemStat.addValue((F32)BYTES_TO_MEGA_BYTES(LLImageGL::sGlobalTextureMemoryInBytes));
-	LLViewerStats::getInstance()->mGLBoundMemStat.addValue((F32)BYTES_TO_MEGA_BYTES(LLImageGL::sBoundTextureMemoryInBytes));
-	LLViewerStats::getInstance()->mRawMemStat.addValue((F32)BYTES_TO_MEGA_BYTES(LLImageRaw::sGlobalRawMemory));
-	LLViewerStats::getInstance()->mFormattedMemStat.addValue((F32)BYTES_TO_MEGA_BYTES(LLImageFormatted::sGlobalFormattedMemory));
+	LLAppViewer::getTextureFetch()->setTextureBandwidth(recording.getPerSec(LLStatViewer::TEXTURE_KBIT).value());
+
+	{
+		using namespace LLStatViewer;
+		sample(NUM_IMAGES, sNumImages);
+		sample(NUM_RAW_IMAGES, LLImageRaw::sRawImageCount);
+		sample(GL_TEX_MEM, LLImageGL::sGlobalTextureMemory);
+		sample(GL_BOUND_MEM, LLImageGL::sBoundTextureMemory);
+		sample(RAW_MEM, LLTrace::Bytes(LLImageRaw::sGlobalRawMemory));
+		sample(FORMATTED_MEM, LLTrace::Bytes(LLImageFormatted::sGlobalFormattedMemory));
+	}
 
 	{
 		//loading from fast cache 
@@ -711,7 +711,7 @@ void LLViewerTextureList::updateImagesDecodePriorities()
 	// Update the decode priority for N images each frame
 	{
         static const S32 MAX_PRIO_UPDATES = gSavedSettings.getS32("TextureFetchUpdatePriorities");         // default: 32
-		const size_t max_update_count = llmin((S32) (MAX_PRIO_UPDATES*MAX_PRIO_UPDATES*gFrameIntervalSeconds) + 1, MAX_PRIO_UPDATES);
+		const size_t max_update_count = llmin((S32) (MAX_PRIO_UPDATES*MAX_PRIO_UPDATES*gFrameIntervalSeconds.value()) + 1, MAX_PRIO_UPDATES);
 		S32 update_counter = llmin(max_update_count, mUUIDMap.size());
 		uuid_map_t::iterator iter = mUUIDMap.upper_bound(mLastUpdateUUID);
 		while ((update_counter-- > 0) && !mUUIDMap.empty())
@@ -945,11 +945,11 @@ F32 LLViewerTextureList::updateImagesFetchTextures(F32 max_time)
 	static const F32 MIN_PRIORITY_THRESHOLD = gSavedSettings.getF32("TextureFetchUpdatePriorityThreshold"); // default: 0.0
 	static const bool SKIP_LOW_PRIO = gSavedSettings.getBOOL("TextureFetchUpdateSkipLowPriority");          // default: false
 
-	size_t max_priority_count = llmin((S32) (MAX_HIGH_PRIO_COUNT*MAX_HIGH_PRIO_COUNT*gFrameIntervalSeconds)+1, MAX_HIGH_PRIO_COUNT);
+	size_t max_priority_count = llmin((S32) (MAX_HIGH_PRIO_COUNT*MAX_HIGH_PRIO_COUNT*gFrameIntervalSeconds.value())+1, MAX_HIGH_PRIO_COUNT);
 	max_priority_count = llmin(max_priority_count, mImageList.size());
 	
 	size_t total_update_count = mUUIDMap.size();
-	size_t max_update_count = llmin((S32) (MAX_UPDATE_COUNT*MAX_UPDATE_COUNT*gFrameIntervalSeconds)+1, MAX_UPDATE_COUNT);
+	size_t max_update_count = llmin((S32) (MAX_UPDATE_COUNT*MAX_UPDATE_COUNT*gFrameIntervalSeconds.value())+1, MAX_UPDATE_COUNT);
 	max_update_count = llmin(max_update_count, total_update_count);	
 	
 	// MAX_HIGH_PRIO_COUNT high priority entries
@@ -1186,7 +1186,7 @@ S32 LLViewerTextureList::getMinVideoRamSetting()
 {
 	S32 system_ram = (S32)BYTES_TO_MEGA_BYTES(gSysMemory.getPhysicalMemoryClamped());
 	//min texture mem sets to 64M if total physical mem is more than 1.5GB
-	return (system_ram > 1500) ? 64 : MIN_VIDEO_RAM_IN_MEGA_BYTES ;
+	return (system_ram > 1500) ? 64 : gMinVideoRam.value() ;
 }
 
 //static
@@ -1236,7 +1236,7 @@ S32 LLViewerTextureList::getMaxVideoRamSetting(bool get_recommended)
 	else
 		max_texmem = llmin(max_texmem, (S32)(system_ram));
 		
-	max_texmem = llclamp(max_texmem, getMinVideoRamSetting(), MAX_VIDEO_RAM_IN_MEGA_BYTES); 
+	max_texmem = llclamp(max_texmem, getMinVideoRamSetting(), gMaxVideoRam.value()); 
 	
 	return max_texmem;
 }
@@ -1324,8 +1324,8 @@ void LLViewerTextureList::receiveImageHeader(LLMessageSystem *msg, void **user_d
 	{
 		received_size = msg->getReceiveSize() ;		
 	}
-	gTextureList.sTextureBits += received_size * 8;
-	gTextureList.sTexturePackets++;
+	add(LLStatViewer::TEXTURE_KBIT, LLTrace::Bytes(received_size));
+	add(LLStatViewer::TEXTURE_PACKETS, 1);
 	
 	U8 codec;
 	U16 packets;
@@ -1397,8 +1397,9 @@ void LLViewerTextureList::receiveImagePacket(LLMessageSystem *msg, void **user_d
 	{
 		received_size = msg->getReceiveSize() ;		
 	}
-	gTextureList.sTextureBits += received_size * 8;
-	gTextureList.sTexturePackets++;
+
+	add(LLStatViewer::TEXTURE_KBIT, LLTrace::Bytes(received_size));
+	add(LLStatViewer::TEXTURE_PACKETS, 1);
 	
 	//llprintline("Start decode, image header...");
 	msg->getUUIDFast(_PREHASH_ImageID, _PREHASH_ID, id);
diff --git a/indra/newview/llviewertexturelist.h b/indra/newview/llviewertexturelist.h
index 3dda973d3f..e3df71cca2 100644
--- a/indra/newview/llviewertexturelist.h
+++ b/indra/newview/llviewertexturelist.h
@@ -1,5 +1,5 @@
 /** 
- * @file llviewertexturelist.h
+ * @file llviewertexturelinumimagest.h
  * @brief Object for managing the list of images within a region
  *
  * $LicenseInfo:firstyear=2000&license=viewerlgpl$
@@ -30,7 +30,6 @@
 #include "lluuid.h"
 //#include "message.h"
 #include "llgl.h"
-#include "llstat.h"
 #include "llviewertexture.h"
 #include "llui.h"
 #include <list>
@@ -200,17 +199,6 @@ private:
 	S32 mMaxTotalTextureMemInMegaBytes;
 	LLFrameTimer mForceDecodeTimer;
 	
-public:
-	static U32 sTextureBits;
-	static U32 sTexturePackets;
-
-	static LLStat sNumImagesStat;
-	static LLStat sNumRawImagesStat;
-	static LLStat sGLTexMemStat;
-	static LLStat sGLBoundMemStat;
-	static LLStat sRawMemStat;
-	static LLStat sFormattedMemStat;
-
 private:
 	static S32 sNumImages;
 	static void (*sUUIDCallback)(void**, const LLUUID &);
diff --git a/indra/newview/llviewerthrottle.cpp b/indra/newview/llviewerthrottle.cpp
index 5147272122..34f2c8f6e6 100644
--- a/indra/newview/llviewerthrottle.cpp
+++ b/indra/newview/llviewerthrottle.cpp
@@ -304,7 +304,8 @@ void LLViewerThrottle::updateDynamicThrottle()
 	}
 	mUpdateTimer.reset();
 
-	if (LLViewerStats::getInstance()->mPacketsLostPercentStat.getMean() > TIGHTEN_THROTTLE_THRESHOLD)
+	F32 mean_packets_lost = LLViewerStats::instance().getRecording().getMean(LLStatViewer::PACKETS_LOST_PERCENT);
+	if (mean_packets_lost > TIGHTEN_THROTTLE_THRESHOLD)
 	{
 		if (mThrottleFrac <= MIN_FRACTIONAL || mCurrentBandwidth / 1024.0f <= MIN_BANDWIDTH)
 		{
@@ -317,7 +318,7 @@ void LLViewerThrottle::updateDynamicThrottle()
 		mCurrent.sendToSim();
 		llinfos << "Tightening network throttle to " << mCurrentBandwidth << llendl;
 	}
-	else if (LLViewerStats::getInstance()->mPacketsLostPercentStat.getMean() <= EASE_THROTTLE_THRESHOLD)
+	else if (mean_packets_lost <= EASE_THROTTLE_THRESHOLD)
 	{
 		if (mThrottleFrac >= MAX_FRACTIONAL || mCurrentBandwidth / 1024.0f >= MAX_BANDWIDTH)
 		{
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 48a69129eb..fea44a38c6 100755
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -77,7 +77,6 @@
 #include "llmediaentry.h"
 #include "llurldispatcher.h"
 #include "raytrace.h"
-#include "llstat.h"
 
 // newview includes
 #include "llagent.h"
@@ -249,6 +248,9 @@ std::string	LLViewerWindow::sSnapshotDir;
 
 std::string	LLViewerWindow::sMovieBaseName;
 
+LLTrace::MeasurementStatHandle<> LLViewerWindow::sMouseVelocityStat("Mouse Velocity");
+
+
 class RecordToChatConsole : public LLError::Recorder, public LLSingleton<RecordToChatConsole>
 {
 public:
@@ -616,7 +618,7 @@ public:
 				addText(xpos, ypos, llformat("%d/%d Mesh HTTP Requests/Retries", LLMeshRepository::sHTTPRequestCount,
 					LLMeshRepository::sHTTPRetryCount));
 				ypos += y_inc;
-
+				
 				addText(xpos, ypos, llformat("%d/%d Mesh LOD Pending/Processing", LLMeshRepository::sLODPending, LLMeshRepository::sLODProcessing));
 				ypos += y_inc;
 
@@ -734,7 +736,7 @@ public:
 			{
 				if(gTotalTextureBytesPerBoostLevel[i] > 0)
 				{
-					addText(xpos, ypos, llformat("Boost_Level %d:  %.3f MB", i, (F32)gTotalTextureBytesPerBoostLevel[i] / (1024 * 1024)));
+					addText(xpos, ypos, llformat("Boost_Level %d:  %.3f MB", i, LLUnit<LLUnits::Megabytes, F32>(gTotalTextureBytesPerBoostLevel[i]).value()));
 					ypos += y_inc;
 				}
 			}
@@ -1405,10 +1407,11 @@ BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S
 		FillRect(hdc, &wnd_rect, CreateSolidBrush(RGB(255, 255, 255)));
 
 		std::string temp_str;
+		LLTrace::Recording& recording = LLViewerStats::instance().getRecording();
 		temp_str = llformat( "FPS %3.1f Phy FPS %2.1f Time Dil %1.3f",		/* Flawfinder: ignore */
-				LLViewerStats::getInstance()->mFPSStat.getMeanPerSec(),
-				LLViewerStats::getInstance()->mSimPhysicsFPS.getPrev(0),
-				LLViewerStats::getInstance()->mSimTimeDilation.getPrev(0));
+				recording.getPerSec(LLStatViewer::FPS), //mFPSStat.getMeanPerSec(),
+				recording.getLastValue(LLStatViewer::SIM_PHYSICS_FPS), 
+				recording.getLastValue(LLStatViewer::SIM_TIME_DILATION));
 		S32 len = temp_str.length();
 		TextOutA(hdc, 0, 0, temp_str.c_str(), len); 
 
@@ -1543,8 +1546,7 @@ LLViewerWindow::LLViewerWindow(const Params& p)
 	mResDirty(false),
 	mStatesDirty(false),
 	mCurrResolutionIndex(0),
-	mProgressView(NULL),
-	mMouseVelocityStat(new LLStat("Mouse Velocity"))
+	mProgressView(NULL)
 {
 	// gKeyboard is still NULL, so it doesn't do LLWindowListener any good to
 	// pass its value right now. Instead, pass it a nullary function that
@@ -1933,7 +1935,7 @@ void LLViewerWindow::initWorldUI()
 	panel_ssf_container->addChild(panel_stand_stop_flying);
 
 	panel_ssf_container->setVisible(TRUE);
-
+	
 	LLMenuOptionPathfindingRebakeNavmesh::getInstance()->initialize();
 
 	// Load and make the toolbars visible
@@ -1981,12 +1983,12 @@ void LLViewerWindow::shutdownViews()
 		gMorphView->setVisible(FALSE);
 	}
 	llinfos << "Global views cleaned." << llendl ;
-	
+
 	// DEV-40930: Clear sModalStack. Otherwise, any LLModalDialog left open
 	// will crump with LL_ERRS.
 	LLModalDialog::shutdownModals();
 	llinfos << "LLModalDialog shut down." << llendl; 
-
+	
 	// destroy the nav bar, not currently part of gViewerWindow
 	// *TODO: Make LLNavigationBar part of gViewerWindow
 	if (LLNavigationBar::instanceExists())
@@ -1994,17 +1996,17 @@ void LLViewerWindow::shutdownViews()
 		delete LLNavigationBar::getInstance();
 	}
 	llinfos << "LLNavigationBar destroyed." << llendl ;
-	
+
 	// destroy menus after instantiating navbar above, as it needs
 	// access to gMenuHolder
 	cleanup_menus();
 	llinfos << "menus destroyed." << llendl ;
-	
+
 	// Delete all child views.
 	delete mRootView;
 	mRootView = NULL;
 	llinfos << "RootView deleted." << llendl ;
-	
+
 	LLMenuOptionPathfindingRebakeNavmesh::getInstance()->quit();
 
 	// Automatically deleted as children of mRootView.  Fix the globals.
@@ -2074,8 +2076,6 @@ LLViewerWindow::~LLViewerWindow()
 
 	delete mDebugText;
 	mDebugText = NULL;
-
-	delete mMouseVelocityStat;
 }
 
 
@@ -2186,8 +2186,8 @@ void LLViewerWindow::reshape(S32 width, S32 height)
 			}
 		}
 
-		LLViewerStats::getInstance()->setStat(LLViewerStats::ST_WINDOW_WIDTH, (F64)width);
-		LLViewerStats::getInstance()->setStat(LLViewerStats::ST_WINDOW_HEIGHT, (F64)height);
+		sample(LLStatViewer::WINDOW_WIDTH, width);
+		sample(LLStatViewer::WINDOW_HEIGHT, height);
 
 		LLLayoutStack::updateClass();
 	}
@@ -2763,11 +2763,12 @@ void append_xui_tooltip(LLView* viewp, LLToolTip::Params& params)
 	}
 }
 
+static LLFastTimer::DeclareTimer ftm("Update UI");
+
 // Update UI based on stored mouse position from mouse-move
 // event processing.
 void LLViewerWindow::updateUI()
 {
-	static LLFastTimer::DeclareTimer ftm("Update UI");
 	LLFastTimer t(ftm);
 
 	static std::string last_handle_msg;
@@ -3237,8 +3238,8 @@ void LLViewerWindow::updateMouseDelta()
 		static F32 fdy = 0.f;
 
 		F32 amount = 16.f;
-		fdx = fdx + ((F32) dx - fdx) * llmin(gFrameIntervalSeconds*amount,1.f);
-		fdy = fdy + ((F32) dy - fdy) * llmin(gFrameIntervalSeconds*amount,1.f);
+		fdx = fdx + ((F32) dx - fdx) * llmin(gFrameIntervalSeconds.value()*amount,1.f);
+		fdy = fdy + ((F32) dy - fdy) * llmin(gFrameIntervalSeconds.value()*amount,1.f);
 
 		mCurrentMouseDelta.set(llround(fdx), llround(fdy));
 		mouse_vel.setVec(fdx,fdy);
@@ -3249,7 +3250,7 @@ void LLViewerWindow::updateMouseDelta()
 		mouse_vel.setVec((F32) dx, (F32) dy);
 	}
     
-	mMouseVelocityStat->addValue(mouse_vel.magVec());
+	sample(sMouseVelocityStat, mouse_vel.magVec());
 }
 
 void LLViewerWindow::updateKeyboardFocus()
@@ -4740,7 +4741,7 @@ void LLViewerWindow::stopGL(BOOL save_state)
 		gGLManager.mIsDisabled = TRUE;
 		stop_glerror();
 		
-		llinfos << "Remaining allocated texture memory: " << LLImageGL::sGlobalTextureMemoryInBytes << " bytes" << llendl;
+		llinfos << "Remaining allocated texture memory: " << LLImageGL::sGlobalTextureMemory.value() << " bytes" << llendl;
 	}
 }
 
@@ -4773,7 +4774,7 @@ void LLViewerWindow::restoreGL(const std::string& progress_message)
 		LLViewerDynamicTexture::restoreGL();
 		LLVOAvatar::restoreGL();
 		LLVOPartGroup::restoreGL();
-		
+
 		gResizeScreenTexture = TRUE;
 		gWindowResized = TRUE;
 
@@ -5260,8 +5261,8 @@ void LLPickInfo::getSurfaceInfo()
 				LLFace* facep = objectp->mDrawable->getFace(mObjectFace);
 				if (facep)
 				{
-				mUVCoords = facep->surfaceToTexture(mSTCoords, mIntersection, mNormal);
-			}
+					mUVCoords = facep->surfaceToTexture(mSTCoords, mIntersection, mNormal);
+				}
 			}
 
 			// and XY coords:
diff --git a/indra/newview/llviewerwindow.h b/indra/newview/llviewerwindow.h
index 5f475fe145..004a59fda5 100644
--- a/indra/newview/llviewerwindow.h
+++ b/indra/newview/llviewerwindow.h
@@ -44,12 +44,12 @@
 #include "llmousehandler.h"
 #include "llhandle.h"
 #include "llinitparam.h"
+#include "lltrace.h"
 
 #include <boost/function.hpp>
 #include <boost/signals2.hpp>
 #include <boost/scoped_ptr.hpp>
 
-class LLStat;
 class LLView;
 class LLViewerObject;
 class LLUUID;
@@ -250,7 +250,7 @@ public:
 	S32				getCurrentMouseDX()		const	{ return mCurrentMouseDelta.mX; }
 	S32				getCurrentMouseDY()		const	{ return mCurrentMouseDelta.mY; }
 	LLCoordGL		getCurrentMouseDelta()	const	{ return mCurrentMouseDelta; }
-	LLStat*			getMouseVelocityStat()		{ return mMouseVelocityStat; }
+	static LLTrace::MeasurementStatHandle<>*	getMouseVelocityStat()		{ return &sMouseVelocityStat; }
 	BOOL			getLeftMouseDown()	const	{ return mLeftMouseDown; }
 	BOOL			getMiddleMouseDown()	const	{ return mMiddleMouseDown; }
 	BOOL			getRightMouseDown()	const	{ return mRightMouseDown; }
@@ -427,7 +427,6 @@ private:
 	LLCoordGL		mCurrentMousePoint;			// last mouse position in GL coords
 	LLCoordGL		mLastMousePoint;		// Mouse point at last frame.
 	LLCoordGL		mCurrentMouseDelta;		//amount mouse moved this frame
-	LLStat*			mMouseVelocityStat;
 	BOOL			mLeftMouseDown;
 	BOOL			mMiddleMouseDown;
 	BOOL			mRightMouseDown;
@@ -482,6 +481,8 @@ private:
 	
 	// Object temporarily hovered over while dragging
 	LLPointer<LLViewerObject>	mDragHoveredObject;
+
+	static LLTrace::MeasurementStatHandle<>	sMouseVelocityStat;
 };
 
 //
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 62e93b7a53..5a07cdf7c9 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -102,6 +102,7 @@
 
 #include "lldebugmessagebox.h"
 #include "llsdutil.h"
+#include "llscenemonitor.h"
 
 extern F32 SPEED_ADJUST_MAX;
 extern F32 SPEED_ADJUST_MAX_SEC;
@@ -771,6 +772,11 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 	mLastPelvisToFoot = 0.0f;
 	mPelvisFixup = 0.0f;
 	mLastPelvisFixup = 0.0f;
+
+	if(LLSceneMonitor::getInstance()->isEnabled())
+	{
+		LLSceneMonitor::getInstance()->freezeAvatar((LLCharacter*)this);
+	}
 }
 
 std::string LLVOAvatar::avString() const
@@ -2911,7 +2917,7 @@ void LLVOAvatar::idleUpdateWindEffect()
 		LLVector3 velocity = getVelocity();
 		F32 speed = velocity.length();
 		//RN: velocity varies too much frame to frame for this to work
-		mRippleAccel.clearVec();//lerp(mRippleAccel, (velocity - mLastVel) * time_delta, LLCriticalDamp::getInterpolant(0.02f));
+		mRippleAccel.clearVec();//lerp(mRippleAccel, (velocity - mLastVel) * time_delta, LLSmoothInterpolation::getInterpolant(0.02f));
 		mLastVel = velocity;
 		LLVector4 wind;
 		wind.setVec(getRegion()->mWind.getVelocityNoisy(getPositionAgent(), 4.f) - velocity);
@@ -2934,11 +2940,11 @@ void LLVOAvatar::idleUpdateWindEffect()
 		F32 interp;
 		if (wind.mV[VW] > mWindVec.mV[VW])
 		{
-			interp = LLCriticalDamp::getInterpolant(0.2f);
+			interp = LLSmoothInterpolation::getInterpolant(0.2f);
 		}
 		else
 		{
-			interp = LLCriticalDamp::getInterpolant(0.4f);
+			interp = LLSmoothInterpolation::getInterpolant(0.4f);
 		}
 		mWindVec = lerp(mWindVec, wind, interp);
 	
@@ -3788,7 +3794,7 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent)
 
 			// Set the root rotation, but do so incrementally so that it
 			// lags in time by some fixed amount.
-			//F32 u = LLCriticalDamp::getInterpolant(PELVIS_LAG);
+			//F32 u = LLSmoothInterpolation::getInterpolant(PELVIS_LAG);
 			F32 pelvis_lag_time = 0.f;
 			if (self_in_mouselook)
 			{
@@ -4318,8 +4324,6 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 	//--------------------------------------------------------------------
 	// render all geometry attached to the skeleton
 	//--------------------------------------------------------------------
-	static LLStat render_stat;
-
 	LLViewerJointMesh::sRenderPass = pass;
 
 	if (pass == AVATAR_RENDER_PASS_SINGLE)
@@ -4372,10 +4376,6 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 	
 	LLViewerJointMesh::sRenderPass = AVATAR_RENDER_PASS_SINGLE;
 	
-	//llinfos << "Avatar render: " << render_timer.getElapsedTimeF32() << llendl;
-
-	//render_stat.addValue(render_timer.getElapsedTimeF32()*1000.f);
-
 	return num_indices;
 }
 
@@ -7828,14 +7828,14 @@ void LLVOAvatar::cullAvatarsByPixelArea()
 		if (gFrameTimeSeconds != sUnbakedUpdateTime) // only update once per frame
 		{
 			sUnbakedUpdateTime = gFrameTimeSeconds;
-			sUnbakedTime += gFrameIntervalSeconds;
+			sUnbakedTime += gFrameIntervalSeconds.value();
 		}
 		if (grey_avatars > 0)
 		{
 			if (gFrameTimeSeconds != sGreyUpdateTime) // only update once per frame
 			{
 				sGreyUpdateTime = gFrameTimeSeconds;
-				sGreyTime += gFrameIntervalSeconds;
+				sGreyTime += gFrameIntervalSeconds.value();
 			}
 		}
 	}
diff --git a/indra/newview/llvoavatarself.cpp b/indra/newview/llvoavatarself.cpp
index e32fd3c3c8..4275552117 100644
--- a/indra/newview/llvoavatarself.cpp
+++ b/indra/newview/llvoavatarself.cpp
@@ -808,8 +808,10 @@ U32  LLVOAvatarSelf::processUpdateMessage(LLMessageSystem *mesgsys,
 		updateMeshTextures();
 
 		// unpack the texture UUIDs to the texture slots
+		if(mesgsys != NULL)
+		{
 		retval = unpackTEMessage(mesgsys, _PREHASH_ObjectData, block_num);
-
+		}
 		// need to trigger a few operations to get the avatar to use the new bakes
 		for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
 		{
@@ -910,17 +912,11 @@ void LLVOAvatarSelf::updateRegion(LLViewerRegion *regionp)
 		if (mLastRegionHandle != 0)
 		{
 			++mRegionCrossingCount;
-			F64 delta = (F64)mRegionCrossingTimer.getElapsedTimeF32();
-			F64 avg = (mRegionCrossingCount == 1) ? 0 : LLViewerStats::getInstance()->getStat(LLViewerStats::ST_CROSSING_AVG);
-			F64 delta_avg = (delta + avg*(mRegionCrossingCount-1)) / mRegionCrossingCount;
-			LLViewerStats::getInstance()->setStat(LLViewerStats::ST_CROSSING_AVG, delta_avg);
-			
-			F64 max = (mRegionCrossingCount == 1) ? 0 : LLViewerStats::getInstance()->getStat(LLViewerStats::ST_CROSSING_MAX);
-			max = llmax(delta, max);
-			LLViewerStats::getInstance()->setStat(LLViewerStats::ST_CROSSING_MAX, max);
+			LLTrace::Seconds delta = mRegionCrossingTimer.getElapsedTimeF32();
+			sample(LLStatViewer::REGION_CROSSING_TIME, delta);
 
 			// Diagnostics
-			llinfos << "Region crossing took " << (F32)(delta * 1000.0) << " ms " << llendl;
+			llinfos << "Region crossing took " << (F32)(delta * 1000.0).value() << " ms " << llendl;
 		}
 		if (regionp)
 		{
@@ -2138,7 +2134,7 @@ LLSD LLVOAvatarSelf::metricsData()
 	result["timers"]["ruth"] = mRuthTimer.getElapsedTimeF32();
 	result["timers"]["invisible"] = mInvisibleTimer.getElapsedTimeF32();
 	result["timers"]["fully_loaded"] = mFullyLoadedTimer.getElapsedTimeF32();
-	result["startup"] = LLStartUp::getPhases().dumpPhases();
+	result["startup"] = LLStartUp::getPhases().asLLSD();
 	
 	return result;
 }
@@ -2587,7 +2583,7 @@ void LLVOAvatarSelf::processRebakeAvatarTextures(LLMessageSystem* msg, void**)
 					llinfos << "TAT: rebake - matched entry " << (S32)index << llendl;
 					gAgentAvatarp->invalidateComposite(layer_set, TRUE);
 					found = TRUE;
-					LLViewerStats::getInstance()->incStat(LLViewerStats::ST_TEX_REBAKES);
+					add(LLStatViewer::TEX_REBAKES, 1);
 				}
 			}
 		}
@@ -2632,7 +2628,7 @@ void LLVOAvatarSelf::forceBakeAllTextures(bool slam_for_debug)
 			}
 
 			invalidateComposite(layer_set, TRUE);
-			LLViewerStats::getInstance()->incStat(LLViewerStats::ST_TEX_REBAKES);
+			add(LLStatViewer::TEX_REBAKES, 1);
 		}
 		else
 		{
@@ -2787,7 +2783,7 @@ void LLVOAvatarSelf::deleteScratchTextures()
 
 		sScratchTexNames.deleteAllData();
 		sScratchTexLastBindTime.deleteAllData();
-		LLImageGL::sGlobalTextureMemoryInBytes -= sScratchTexBytes;
+		LLImageGL::sGlobalTextureMemory -= sScratchTexBytes;
 		sScratchTexBytes = 0;
 	}
 }
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index 7db19c5c1b..86cfbb1d74 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -29,6 +29,10 @@
 #include "llerror.h"
 #include "llregionhandle.h"
 #include "llviewercontrol.h"
+#include "llviewerobjectlist.h"
+#include "lldrawable.h"
+#include "llviewerregion.h"
+#include "pipeline.h"
 
 BOOL check_read(LLAPRFile* apr_file, void* src, S32 n_bytes) 
 {
@@ -46,12 +50,16 @@ BOOL check_write(LLAPRFile* apr_file, void* src, S32 n_bytes)
 //---------------------------------------------------------------------------
 
 LLVOCacheEntry::LLVOCacheEntry(U32 local_id, U32 crc, LLDataPackerBinaryBuffer &dp)
-	:
+	: LLViewerOctreeEntryData(LLViewerOctreeEntry::LLVOCACHEENTRY),
 	mLocalID(local_id),
 	mCRC(crc),
 	mHitCount(0),
 	mDupeCount(0),
-	mCRCChangeCount(0)
+	mCRCChangeCount(0),
+	mState(INACTIVE),
+	mRepeatedVisCounter(0),
+	mVisFrameRange(64),
+	mSceneContrib(0.f)
 {
 	mBuffer = new U8[dp.getBufferSize()];
 	mDP.assignBuffer(mBuffer, dp.getBufferSize());
@@ -59,24 +67,35 @@ LLVOCacheEntry::LLVOCacheEntry(U32 local_id, U32 crc, LLDataPackerBinaryBuffer &
 }
 
 LLVOCacheEntry::LLVOCacheEntry()
-	:
+	: LLViewerOctreeEntryData(LLViewerOctreeEntry::LLVOCACHEENTRY),
 	mLocalID(0),
 	mCRC(0),
 	mHitCount(0),
 	mDupeCount(0),
 	mCRCChangeCount(0),
-	mBuffer(NULL)
+	mBuffer(NULL),
+	mState(INACTIVE),
+	mRepeatedVisCounter(0),
+	mVisFrameRange(64),
+	mSceneContrib(0.f)
 {
 	mDP.assignBuffer(mBuffer, 0);
 }
 
 LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
-	: mBuffer(NULL)
+	: LLViewerOctreeEntryData(LLViewerOctreeEntry::LLVOCACHEENTRY), 
+	mBuffer(NULL),
+	mState(INACTIVE),
+	mRepeatedVisCounter(0),
+	mVisFrameRange(64),
+	mSceneContrib(0.f)
 {
 	S32 size = -1;
 	BOOL success;
 
 	mDP.assignBuffer(mBuffer, 0);
+	setOctreeEntry(NULL);
+
 	success = check_read(apr_file, &mLocalID, sizeof(U32));
 	if(success)
 	{
@@ -96,6 +115,36 @@ LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
 	}
 	if(success)
 	{
+		success = check_read(apr_file, &mState, sizeof(U32));
+	}
+	if(success)
+	{
+		F32 ext[8];
+		success = check_read(apr_file, (void*)ext, sizeof(F32) * 8);
+
+		LLVector4a exts[2];
+		exts[0].load4a(ext);
+		exts[1].load4a(&ext[4]);
+	
+		setSpatialExtents(exts[0], exts[1]);
+	}
+	if(success)
+	{
+		LLVector4 pos;
+		success = check_read(apr_file, (void*)pos.mV, sizeof(LLVector4));
+
+		LLVector4a pos_;
+		pos_.load4a(pos.mV);
+		setPositionGroup(pos_);
+	}
+	if(success)
+	{
+		F32 rad;
+		success = check_read(apr_file, &rad, sizeof(F32));
+		setBinRadius(rad);
+	}
+	if(success)
+	{
 		success = check_read(apr_file, &size, sizeof(S32));
 
 		// Corruption in the cache entries
@@ -132,32 +181,100 @@ LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
 		mDupeCount = 0;
 		mCRCChangeCount = 0;
 		mBuffer = NULL;
+		mEntry = NULL;
+		mState = 0;
 	}
 }
 
 LLVOCacheEntry::~LLVOCacheEntry()
 {
 	mDP.freeBuffer();
+	//llassert(mState == INACTIVE);
 }
 
+//virtual 
+void LLVOCacheEntry::setOctreeEntry(LLViewerOctreeEntry* entry)
+{
+	if(!entry && mDP.getBufferSize() > 0)
+	{
+		LLUUID fullid;
+		mDP.reset();
+		mDP.unpackUUID(fullid, "ID");
+		mDP.reset();
 
-// New CRC means the object has changed.
-void LLVOCacheEntry::assignCRC(U32 crc, LLDataPackerBinaryBuffer &dp)
+		LLViewerObject* obj = gObjectList.findObject(fullid);
+		if(obj && obj->mDrawable)
+		{
+			entry = obj->mDrawable->getEntry();
+		}
+	}
+
+	LLViewerOctreeEntryData::setOctreeEntry(entry);
+}
+
+void LLVOCacheEntry::copyTo(LLVOCacheEntry* new_entry)
 {
-	if (  (mCRC != crc)
-		||(mDP.getBufferSize() == 0))
+	//copy LLViewerOctreeEntry
+	if(mEntry.notNull())
 	{
-		mCRC = crc;
-		mHitCount = 0;
-		mCRCChangeCount++;
+		new_entry->setOctreeEntry(mEntry);
+		mEntry = NULL;
+	}
+
+	//copy children
+	S32 num_children = getNumOfChildren();
+	for(S32 i = 0; i < num_children; i++)
+	{
+		new_entry->addChild(getChild(i));
+	}
+}
+
+void LLVOCacheEntry::setState(U32 state)
+{
+	mState &= 0xffff0000; //clear the low 16 bits
+	state &= 0x0000ffff;  //clear the high 16 bits;
+	mState |= state;
 
-		mDP.freeBuffer();
-		mBuffer = new U8[dp.getBufferSize()];
-		mDP.assignBuffer(mBuffer, dp.getBufferSize());
-		mDP = dp;
+	if(getState() == ACTIVE)
+	{
+		const S32 MIN_REAVTIVE_INTERVAL = 20;
+		U32 last_visible = getVisible();
+		
+		setVisible();
+
+		if(getVisible() - last_visible < MIN_REAVTIVE_INTERVAL + mVisFrameRange)
+		{
+			mRepeatedVisCounter++;
+		}
+		else
+		{
+			mRepeatedVisCounter = 0;
+			mVisFrameRange = 64;
+		}
+
+		if(mRepeatedVisCounter > 2) 
+		{
+			//if repeatedly becomes visible immediately after invisible, enlarge the visible frame range
+
+			mRepeatedVisCounter = 0;
+			mVisFrameRange *= 2;
+		}
 	}
 }
 
+//virtual 
+S32  LLVOCacheEntry::getMinVisFrameRange()const
+{
+	return mVisFrameRange;
+}
+
+void LLVOCacheEntry::addChild(LLVOCacheEntry* entry)
+{
+	llassert(entry != NULL);
+
+	mChildrenList.push_back(entry);
+}
+	
 LLDataPackerBinaryBuffer *LLVOCacheEntry::getDP(U32 crc)
 {
 	if (  (mCRC != crc)
@@ -170,6 +287,16 @@ LLDataPackerBinaryBuffer *LLVOCacheEntry::getDP(U32 crc)
 	return &mDP;
 }
 
+LLDataPackerBinaryBuffer *LLVOCacheEntry::getDP()
+{
+	if (mDP.getBufferSize() == 0)
+	{
+		//llinfos << "Not getting cache entry, invalid!" << llendl;
+		return NULL;
+	}
+	
+	return &mDP;
+}
 
 void LLVOCacheEntry::recordHit()
 {
@@ -189,6 +316,11 @@ void LLVOCacheEntry::dump() const
 
 BOOL LLVOCacheEntry::writeToFile(LLAPRFile* apr_file) const
 {
+	if(!mEntry)
+	{
+		return FALSE;
+	}
+
 	BOOL success;
 	success = check_write(apr_file, (void*)&mLocalID, sizeof(U32));
 	if(success)
@@ -209,6 +341,33 @@ BOOL LLVOCacheEntry::writeToFile(LLAPRFile* apr_file) const
 	}
 	if(success)
 	{
+		U32 state = mState & 0xffff0000; //only store the high 16 bits.
+		success = check_write(apr_file, (void*)&state, sizeof(U32));
+	}
+	if(success)
+	{
+		const LLVector4a* exts = getSpatialExtents() ;
+		LLVector4 ext(exts[0][0], exts[0][1], exts[0][2], exts[0][3]);
+		success = check_write(apr_file, ext.mV, sizeof(LLVector4));		
+		if(success)
+		{
+			ext.set(exts[1][0], exts[1][1], exts[1][2], exts[1][3]);
+			success = check_write(apr_file, ext.mV, sizeof(LLVector4));		
+		}
+	}
+	if(success)
+	{
+		const LLVector4a pos_ = getPositionGroup() ;
+		LLVector4 pos(pos_[0], pos_[1], pos_[2], pos_[3]);
+		success = check_write(apr_file, pos.mV, sizeof(LLVector4));		
+	}
+	if(success)
+	{
+		F32 rad = getBinRadius();
+		success = check_write(apr_file, (void*)&rad, sizeof(F32));
+	}
+	if(success)
+	{
 		S32 size = mDP.getBufferSize();
 		success = check_write(apr_file, (void*)&size, sizeof(S32));
 	
@@ -221,6 +380,121 @@ BOOL LLVOCacheEntry::writeToFile(LLAPRFile* apr_file) const
 	return success ;
 }
 
+void LLVOCacheEntry::calcSceneContribution(const LLVector3& camera_origin, bool needs_update, U32 last_update)
+{
+	if(!needs_update && getVisible() >= last_update)
+	{
+		return; //no need to update
+	}
+
+	const LLVector4a& center = getPositionGroup();
+	
+	LLVector4a origin;
+	origin.load3(camera_origin.mV);
+
+	LLVector4a lookAt;
+	lookAt.setSub(center, origin);
+	F32 squared_dist = lookAt.dot3(lookAt).getF32();
+
+	F32 rad = getBinRadius();
+	mSceneContrib = rad * rad / squared_dist;
+
+	setVisible();
+}
+
+//-------------------------------------------------------------------
+//LLVOCachePartition
+//-------------------------------------------------------------------
+LLVOCachePartition::LLVOCachePartition(LLViewerRegion* regionp)
+{
+	mRegionp = regionp;
+	mPartitionType = LLViewerRegion::PARTITION_VO_CACHE;
+	mVisitedTime = 0;
+
+	new LLviewerOctreeGroup(mOctree);
+}
+
+void LLVOCachePartition::addEntry(LLViewerOctreeEntry* entry)
+{
+	llassert(entry->hasVOCacheEntry());
+
+	mOctree->insert(entry);
+}
+	
+void LLVOCachePartition::removeEntry(LLViewerOctreeEntry* entry)
+{
+	entry->getVOCacheEntry()->setGroup(NULL);
+
+	llassert(!entry->getGroup());
+}
+	
+class LLVOCacheOctreeCull : public LLViewerOctreeCull
+{
+public:
+	LLVOCacheOctreeCull(LLCamera* camera, LLViewerRegion* regionp, const LLVector3& shift) : LLViewerOctreeCull(camera), mRegionp(regionp) 
+	{
+		mLocalShift = shift;
+	}
+
+	virtual S32 frustumCheck(const LLviewerOctreeGroup* group)
+	{
+		//S32 res = AABBInRegionFrustumGroupBounds(group);
+		
+		S32 res = AABBInRegionFrustumNoFarClipGroupBounds(group);
+		if (res != 0)
+		{
+			res = llmin(res, AABBRegionSphereIntersectGroupExtents(group, mLocalShift));
+		}
+		return res;
+	}
+
+	virtual S32 frustumCheckObjects(const LLviewerOctreeGroup* group)
+	{
+		//S32 res = AABBInRegionFrustumObjectBounds(group);
+
+		S32 res = AABBInRegionFrustumNoFarClipObjectBounds(group);
+		if (res != 0)
+		{
+			res = llmin(res, AABBRegionSphereIntersectObjectExtents(group, mLocalShift));
+		}
+		return res;
+	}
+
+	virtual void processGroup(LLviewerOctreeGroup* base_group)
+	{
+		mRegionp->addVisibleGroup(base_group);
+	}
+
+private:
+	LLViewerRegion* mRegionp;
+	LLVector3       mLocalShift; //shift vector from agent space to local region space.
+};
+
+S32 LLVOCachePartition::cull(LLCamera &camera)
+{
+	if(!LLViewerRegion::sVOCacheCullingEnabled)
+	{
+		return 0;
+	}
+
+	if(mVisitedTime == LLViewerOctreeEntryData::getCurrentFrame())
+	{
+		return 0; //already visited.
+	}
+	mVisitedTime = LLViewerOctreeEntryData::getCurrentFrame();
+
+	((LLviewerOctreeGroup*)mOctree->getListener(0))->rebound();
+
+	//localize the camera
+	LLVector3 region_agent = mRegionp->getOriginAgent();
+	camera.calcRegionFrustumPlanes(region_agent);
+
+	LLVOCacheOctreeCull culler(&camera, mRegionp, region_agent);
+	culler.traverse(mOctree);
+
+	return 0;
+}
+
 //-------------------------------------------------------------------
 //LLVOCache
 //-------------------------------------------------------------------
@@ -625,11 +899,10 @@ void LLVOCache::readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::voca
 				{
 					for (S32 i = 0; i < num_entries; i++)
 					{
-						LLVOCacheEntry* entry = new LLVOCacheEntry(&apr_file);
+						LLPointer<LLVOCacheEntry> entry = new LLVOCacheEntry(&apr_file);
 						if (!entry->getLocalID())
 						{
 							llwarns << "Aborting cache file load for " << filename << ", cache file corruption!" << llendl;
-							delete entry ;
 							success = false ;
 							break ;
 						}
diff --git a/indra/newview/llvocache.h b/indra/newview/llvocache.h
index 14e3b4c793..c631e12739 100644
--- a/indra/newview/llvocache.h
+++ b/indra/newview/llvocache.h
@@ -31,34 +31,95 @@
 #include "lldatapacker.h"
 #include "lldlinked.h"
 #include "lldir.h"
-
+#include "llvieweroctree.h"
 
 //---------------------------------------------------------------------------
 // Cache entries
 class LLVOCacheEntry;
+class LLCamera;
 
-class LLVOCacheEntry
+class LLVOCacheEntry : public LLViewerOctreeEntryData
 {
 public:
+	enum
+	{
+		INACTIVE = 0x00000000,     //not visible
+		IN_QUEUE = 0x00000001,     //in visible queue, object to be created
+		WAITING  = 0x00000002,     //object creation request sent
+		ACTIVE   = 0x00000004      //object created, and in rendering pipeline.
+	};
+
+	enum
+	{
+		ADD_TO_CACHE_TREE = 0x00010000, //has parent
+	};
+
+	struct CompareVOCacheEntry
+	{
+		bool operator()(const LLVOCacheEntry* const& lhs, const LLVOCacheEntry* const& rhs)
+		{
+			F32 lpa = lhs->getSceneContribution();
+			F32 rpa = rhs->getSceneContribution();
+
+			//larger pixel area first
+			if(lpa > rpa)		
+			{
+				return true;
+			}
+			else if(lpa < rpa)
+			{
+				return false;
+			}
+			else
+			{
+				return lhs < rhs;
+			}			
+		}
+	};
+protected:
+	~LLVOCacheEntry();
+public:
 	LLVOCacheEntry(U32 local_id, U32 crc, LLDataPackerBinaryBuffer &dp);
 	LLVOCacheEntry(LLAPRFile* apr_file);
-	LLVOCacheEntry();
-	~LLVOCacheEntry();
-
+	LLVOCacheEntry();	
+
+	void setState(U32 state);
+	void clearState(U32 state) {mState &= ~state;}
+	void addState(U32 state)   {mState |= state;}
+	bool isState(U32 state)    {return (mState & 0xffff) == state;}
+	bool hasState(U32 state)   {return mState & state;}
+	U32  getState() const      {return (mState & 0xffff);}
+	U32  getFullState() const  {return mState;}
+	
 	U32 getLocalID() const			{ return mLocalID; }
 	U32 getCRC() const				{ return mCRC; }
 	S32 getHitCount() const			{ return mHitCount; }
 	S32 getCRCChangeCount() const	{ return mCRCChangeCount; }
+	S32 getMinVisFrameRange()const;	
+
+	void calcSceneContribution(const LLVector3& camera_origin, bool needs_update, U32 last_update);
+	void setSceneContribution(F32 scene_contrib) {mSceneContrib = scene_contrib;}
+	F32 getSceneContribution() const             { return mSceneContrib;}
 
 	void dump() const;
 	BOOL writeToFile(LLAPRFile* apr_file) const;
-	void assignCRC(U32 crc, LLDataPackerBinaryBuffer &dp);
 	LLDataPackerBinaryBuffer *getDP(U32 crc);
+	LLDataPackerBinaryBuffer *getDP();
 	void recordHit();
 	void recordDupe() { mDupeCount++; }
+	
+	void copyTo(LLVOCacheEntry* new_entry); //copy variables 
+	/*virtual*/ void setOctreeEntry(LLViewerOctreeEntry* entry);
+
+	void addChild(LLVOCacheEntry* entry);
+	LLVOCacheEntry* getChild(S32 i) {return mChildrenList[i];}
+	S32  getNumOfChildren()         {return mChildrenList.size();}
+	void clearChildrenList()        {mChildrenList.clear();}
 
 public:
-	typedef std::map<U32, LLVOCacheEntry*>	vocache_entry_map_t;
+	typedef std::map<U32, LLPointer<LLVOCacheEntry> >	   vocache_entry_map_t;
+	typedef std::set<LLVOCacheEntry*>                      vocache_entry_set_t;
+	typedef std::set<LLVOCacheEntry*, CompareVOCacheEntry> vocache_entry_priority_list_t;	
 
 protected:
 	U32							mLocalID;
@@ -68,6 +129,25 @@ protected:
 	S32							mCRCChangeCount;
 	LLDataPackerBinaryBuffer	mDP;
 	U8							*mBuffer;
+
+	F32                         mSceneContrib; //projected scene contributuion of this object.
+	S32                         mVisFrameRange;
+	S32                         mRepeatedVisCounter; //number of repeatedly visible within a short time.
+	U32                         mState; //high 16 bits reserved for special use.
+	std::vector<LLVOCacheEntry*> mChildrenList; //children entries in a linked set.
+};
+
+class LLVOCachePartition : public LLViewerOctreePartition
+{
+public:
+	LLVOCachePartition(LLViewerRegion* regionp);
+
+	void addEntry(LLViewerOctreeEntry* entry);
+	void removeEntry(LLViewerOctreeEntry* entry);
+	/*virtual*/ S32 cull(LLCamera &camera);
+
+private:
+	U32 mVisitedTime;
 };
 
 //
diff --git a/indra/newview/llvograss.cpp b/indra/newview/llvograss.cpp
index 4dca87652d..d378ed2577 100644
--- a/indra/newview/llvograss.cpp
+++ b/indra/newview/llvograss.cpp
@@ -603,8 +603,8 @@ U32 LLVOGrass::getPartitionType() const
 	return LLViewerRegion::PARTITION_GRASS;
 }
 
-LLGrassPartition::LLGrassPartition()
-: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, GL_STREAM_DRAW_ARB)
+LLGrassPartition::LLGrassPartition(LLViewerRegion* regionp)
+: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, GL_STREAM_DRAW_ARB, regionp)
 {
 	mDrawableType = LLPipeline::RENDER_TYPE_GRASS;
 	mPartitionType = LLViewerRegion::PARTITION_GRASS;
@@ -624,9 +624,9 @@ void LLGrassPartition::addGeometryCount(LLSpatialGroup* group, U32& vertex_count
 	LLViewerCamera* camera = LLViewerCamera::getInstance();
 	for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 	{
-		LLDrawable* drawablep = *i;
+		LLDrawable* drawablep = (LLDrawable*)(*i)->getDrawable();
 		
-		if (drawablep->isDead())
+		if (!drawablep || drawablep->isDead())
 		{
 			continue;
 		}
@@ -738,8 +738,10 @@ void LLGrassPartition::getGeometry(LLSpatialGroup* group)
 			LLDrawInfo* info = new LLDrawInfo(start,end,count,offset,facep->getTexture(), 
 				//facep->getTexture(),
 				buffer, fullbright); 
-			info->mExtents[0] = group->mObjectExtents[0];
-			info->mExtents[1] = group->mObjectExtents[1];
+
+			const LLVector4a* exts = group->getObjectExtents();
+			info->mExtents[0] = exts[0];
+			info->mExtents[1] = exts[1];
 			info->mVSize = vsize;
 			draw_vec.push_back(info);
 			//for alpha sorting
diff --git a/indra/newview/llvopartgroup.cpp b/indra/newview/llvopartgroup.cpp
index fa34a6f1f5..29c78f85f2 100644
--- a/indra/newview/llvopartgroup.cpp
+++ b/indra/newview/llvopartgroup.cpp
@@ -489,8 +489,8 @@ U32 LLVOPartGroup::getPartitionType() const
 	return LLViewerRegion::PARTITION_PARTICLE; 
 }
 
-LLParticlePartition::LLParticlePartition()
-: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, GL_STREAM_DRAW_ARB)
+LLParticlePartition::LLParticlePartition(LLViewerRegion* regionp)
+: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, GL_STREAM_DRAW_ARB, regionp)
 {
 	mRenderPass = LLRenderPass::PASS_ALPHA;
 	mDrawableType = LLPipeline::RENDER_TYPE_PARTICLES;
@@ -499,8 +499,8 @@ LLParticlePartition::LLParticlePartition()
 	mLODPeriod = 1;
 }
 
-LLHUDParticlePartition::LLHUDParticlePartition() :
-	LLParticlePartition()
+LLHUDParticlePartition::LLHUDParticlePartition(LLViewerRegion* regionp) :
+	LLParticlePartition(regionp)
 {
 	mDrawableType = LLPipeline::RENDER_TYPE_HUD_PARTICLES;
 	mPartitionType = LLViewerRegion::PARTITION_HUD_PARTICLE;
@@ -510,7 +510,7 @@ static LLFastTimer::DeclareTimer FTM_REBUILD_PARTICLE_VBO("Particle VBO");
 
 void LLParticlePartition::rebuildGeom(LLSpatialGroup* group)
 {
-	if (group->isDead() || !group->isState(LLSpatialGroup::GEOM_DIRTY))
+	if (group->isDead() || !group->hasState(LLSpatialGroup::GEOM_DIRTY))
 	{
 		return;
 	}
@@ -558,9 +558,9 @@ void LLParticlePartition::addGeometryCount(LLSpatialGroup* group, U32& vertex_co
 	LLViewerCamera* camera = LLViewerCamera::getInstance();
 	for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 	{
-		LLDrawable* drawablep = *i;
+		LLDrawable* drawablep = (LLDrawable*)(*i)->getDrawable();
 		
-		if (drawablep->isDead())
+		if (!drawablep || drawablep->isDead())
 		{
 			continue;
 		}
@@ -699,8 +699,10 @@ void LLParticlePartition::getGeometry(LLSpatialGroup* group)
 			LLDrawInfo* info = new LLDrawInfo(start,end,count,offset,facep->getTexture(), 
 				//facep->getTexture(),
 				buffer, fullbright); 
-			info->mExtents[0] = group->mObjectExtents[0];
-			info->mExtents[1] = group->mObjectExtents[1];
+
+			const LLVector4a* exts = group->getObjectExtents();
+			info->mExtents[0] = exts[0];
+			info->mExtents[1] = exts[1];
 			info->mVSize = vsize;
 			draw_vec.push_back(info);
 			//for alpha sorting
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index 31358df85f..82de61cda2 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -2146,7 +2146,7 @@ void LLVOSky::updateFog(const F32 distance)
 		
 		// get the water param manager variables
 		float water_fog_density = LLWaterParamManager::getInstance()->getFogDensity();
-		LLColor4 water_fog_color = LLDrawPoolWater::sWaterFogColor.mV;
+		LLColor4 water_fog_color(LLDrawPoolWater::sWaterFogColor.mV);
 		
 		// adjust the color based on depth.  We're doing linear approximations
 		float depth_scale = gSavedSettings.getF32("WaterGLFogDepthScale");
diff --git a/indra/newview/llvosurfacepatch.cpp b/indra/newview/llvosurfacepatch.cpp
index cb905d02da..d5b3f2fd14 100644
--- a/indra/newview/llvosurfacepatch.cpp
+++ b/indra/newview/llvosurfacepatch.cpp
@@ -1058,8 +1058,8 @@ U32 LLVOSurfacePatch::getPartitionType() const
 	return LLViewerRegion::PARTITION_TERRAIN; 
 }
 
-LLTerrainPartition::LLTerrainPartition()
-: LLSpatialPartition(LLDrawPoolTerrain::VERTEX_DATA_MASK, FALSE, GL_DYNAMIC_DRAW_ARB)
+LLTerrainPartition::LLTerrainPartition(LLViewerRegion* regionp)
+: LLSpatialPartition(LLDrawPoolTerrain::VERTEX_DATA_MASK, FALSE, GL_DYNAMIC_DRAW_ARB, regionp)
 {
 	mOcclusionEnabled = FALSE;
 	mInfiniteFarClip = TRUE;
diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp
index 6687ce432f..fe1ef10f7f 100644
--- a/indra/newview/llvotree.cpp
+++ b/indra/newview/llvotree.cpp
@@ -1290,8 +1290,8 @@ U32 LLVOTree::getPartitionType() const
 	return LLViewerRegion::PARTITION_TREE; 
 }
 
-LLTreePartition::LLTreePartition()
-: LLSpatialPartition(0, FALSE, GL_DYNAMIC_DRAW_ARB)
+LLTreePartition::LLTreePartition(LLViewerRegion* regionp)
+: LLSpatialPartition(0, FALSE, GL_DYNAMIC_DRAW_ARB, regionp)
 {
 	mDrawableType = LLPipeline::RENDER_TYPE_TREE;
 	mPartitionType = LLViewerRegion::PARTITION_TREE;
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index d94cd01a0b..12f268d324 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -1143,7 +1143,7 @@ void LLVOVolume::sculpt()
 			{	// Log first time, then every 100 afterwards otherwise this can flood the logs
 				llwarns << "WARNING!!: Current discard for sculpty " << mSculptTexture->getID() 
 					<< " at " << current_discard 
-					<< " is less than -2." << llendl;
+				<< " is less than -2." << llendl;
 				low_sculpty_discard_warning_count = 0;
 			}
 			
@@ -1157,10 +1157,10 @@ void LLVOVolume::sculpt()
 			{	// Log first time, then every 100 afterwards otherwise this can flood the logs
 				llwarns << "WARNING!!: Current discard for sculpty " << mSculptTexture->getID() 
 					<< " at " << current_discard 
-					<< " is more than than allowed max of " << MAX_DISCARD_LEVEL << llendl;
+				<< " is more than than allowed max of " << MAX_DISCARD_LEVEL << llendl;
 				high_sculpty_discard_warning_count = 0;
 			}
-
+			
 			// corrupted volume... don't update the sculpty			
 			return;
 		}
@@ -3945,8 +3945,8 @@ U32 LLVOVolume::getPartitionType() const
 	return LLViewerRegion::PARTITION_VOLUME;
 }
 
-LLVolumePartition::LLVolumePartition()
-: LLSpatialPartition(LLVOVolume::VERTEX_DATA_MASK, TRUE, GL_DYNAMIC_DRAW_ARB)
+LLVolumePartition::LLVolumePartition(LLViewerRegion* regionp)
+: LLSpatialPartition(LLVOVolume::VERTEX_DATA_MASK, TRUE, GL_DYNAMIC_DRAW_ARB, regionp)
 {
 	mLODPeriod = 32;
 	mDepthMask = FALSE;
@@ -3956,8 +3956,8 @@ LLVolumePartition::LLVolumePartition()
 	mBufferUsage = GL_DYNAMIC_DRAW_ARB;
 }
 
-LLVolumeBridge::LLVolumeBridge(LLDrawable* drawablep)
-: LLSpatialBridge(drawablep, TRUE, LLVOVolume::VERTEX_DATA_MASK)
+LLVolumeBridge::LLVolumeBridge(LLDrawable* drawablep, LLViewerRegion* regionp)
+: LLSpatialBridge(drawablep, TRUE, LLVOVolume::VERTEX_DATA_MASK, regionp)
 {
 	mDepthMask = FALSE;
 	mLODPeriod = 32;
@@ -4175,9 +4175,9 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
 	group->mLastUpdateViewAngle = group->mViewAngle;
 
-	if (!group->isState(LLSpatialGroup::GEOM_DIRTY | LLSpatialGroup::ALPHA_DIRTY))
+	if (!group->hasState(LLSpatialGroup::GEOM_DIRTY | LLSpatialGroup::ALPHA_DIRTY))
 	{
-		if (group->isState(LLSpatialGroup::MESH_DIRTY) && !LLPipeline::sDelayVBUpdate)
+		if (group->hasState(LLSpatialGroup::MESH_DIRTY) && !LLPipeline::sDelayVBUpdate)
 		{
 			rebuildMesh(group);
 		}
@@ -4215,7 +4215,8 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 	group->mSurfaceArea = 0;
 	
 	//cache object box size since it might be used for determining visibility
-	group->mObjectBoxSize = group->mObjectBounds[1].getLength3().getF32();
+	const LLVector4a* bounds = group->getObjectBounds();
+	group->mObjectBoxSize = bounds[1].getLength3().getF32();
 
 	group->clearDrawMap();
 
@@ -4242,9 +4243,9 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 		//get all the faces into a list
 		for (LLSpatialGroup::element_iter drawable_iter = group->getDataBegin(); drawable_iter != group->getDataEnd(); ++drawable_iter)
 		{
-			LLDrawable* drawablep = *drawable_iter;
+			LLDrawable* drawablep = (LLDrawable*)(*drawable_iter)->getDrawable();
 		
-			if (drawablep->isDead() || drawablep->isState(LLDrawable::FORCE_INVISIBLE) )
+			if (!drawablep || drawablep->isDead() || drawablep->isState(LLDrawable::FORCE_INVISIBLE) )
 			{
 				continue;
 			}
@@ -4648,10 +4649,13 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 		//drawables have been rebuilt, clear rebuild status
 		for (LLSpatialGroup::element_iter drawable_iter = group->getDataBegin(); drawable_iter != group->getDataEnd(); ++drawable_iter)
 		{
-			LLDrawable* drawablep = *drawable_iter;
+			LLDrawable* drawablep = (LLDrawable*)(*drawable_iter)->getDrawable();
+			if(drawablep)
+			{
 			drawablep->clearState(LLDrawable::REBUILD_ALL);
 		}
 	}
+	}
 
 	group->mLastUpdateTime = gFrameTimeSeconds;
 	group->mBuilt = 1.f;
@@ -4675,7 +4679,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 void LLVolumeGeometryManager::rebuildMesh(LLSpatialGroup* group)
 {
 	llassert(group);
-	if (group && group->isState(LLSpatialGroup::MESH_DIRTY) && !group->isState(LLSpatialGroup::GEOM_DIRTY))
+	if (group && group->hasState(LLSpatialGroup::MESH_DIRTY) && !group->hasState(LLSpatialGroup::GEOM_DIRTY))
 	{
 		LLFastTimer ftm(FTM_REBUILD_VOLUME_VB);
 		LLFastTimer t(FTM_REBUILD_VOLUME_GEN_DRAW_INFO); //make sure getgeometryvolume shows up in the right place in timers
@@ -4688,9 +4692,9 @@ void LLVolumeGeometryManager::rebuildMesh(LLSpatialGroup* group)
 
 		for (LLSpatialGroup::element_iter drawable_iter = group->getDataBegin(); drawable_iter != group->getDataEnd(); ++drawable_iter)
 		{
-			LLDrawable* drawablep = *drawable_iter;
+			LLDrawable* drawablep = (LLDrawable*)(*drawable_iter)->getDrawable();
 
-			if (!drawablep->isDead() && drawablep->isState(LLDrawable::REBUILD_ALL) && !drawablep->isState(LLDrawable::RIGGED) )
+			if (drawablep && !drawablep->isDead() && drawablep->isState(LLDrawable::REBUILD_ALL) && !drawablep->isState(LLDrawable::RIGGED) )
 			{
 				LLVOVolume* vobj = drawablep->getVOVolume();
 				vobj->preRebuild();
@@ -4756,7 +4760,11 @@ void LLVolumeGeometryManager::rebuildMesh(LLSpatialGroup* group)
 			llwarns << "Not all mapped vertex buffers are unmapped!" << llendl ; 
 			for (LLSpatialGroup::element_iter drawable_iter = group->getDataBegin(); drawable_iter != group->getDataEnd(); ++drawable_iter)
 			{
-				LLDrawable* drawablep = *drawable_iter;
+				LLDrawable* drawablep = (LLDrawable*)(*drawable_iter)->getDrawable();
+				if(!drawablep)
+				{
+					continue;
+				}
 				for (S32 i = 0; i < drawablep->getNumFaces(); ++i)
 				{
 					LLFace* face = drawablep->getFace(i);
@@ -5229,9 +5237,9 @@ void LLGeometryManager::addGeometryCount(LLSpatialGroup* group, U32 &vertex_coun
 
 	for (LLSpatialGroup::element_iter drawable_iter = group->getDataBegin(); drawable_iter != group->getDataEnd(); ++drawable_iter)
 	{
-		LLDrawable* drawablep = *drawable_iter;
+		LLDrawable* drawablep = (LLDrawable*)(*drawable_iter)->getDrawable();
 		
-		if (drawablep->isDead())
+		if (!drawablep || drawablep->isDead())
 		{
 			continue;
 		}
@@ -5269,7 +5277,7 @@ void LLGeometryManager::addGeometryCount(LLSpatialGroup* group, U32 &vertex_coun
 	group->mBufferUsage = usage;
 }
 
-LLHUDPartition::LLHUDPartition()
+LLHUDPartition::LLHUDPartition(LLViewerRegion* regionp) : LLBridgePartition(regionp)
 {
 	mPartitionType = LLViewerRegion::PARTITION_HUD;
 	mDrawableType = LLPipeline::RENDER_TYPE_HUD;
diff --git a/indra/newview/llvowater.cpp b/indra/newview/llvowater.cpp
index e8a1c3d1d6..50e7ed7bb5 100644
--- a/indra/newview/llvowater.cpp
+++ b/indra/newview/llvowater.cpp
@@ -298,15 +298,15 @@ U32 LLVOVoidWater::getPartitionType() const
 	return LLViewerRegion::PARTITION_VOIDWATER;
 }
 
-LLWaterPartition::LLWaterPartition()
-: LLSpatialPartition(0, FALSE, GL_DYNAMIC_DRAW_ARB)
+LLWaterPartition::LLWaterPartition(LLViewerRegion* regionp)
+: LLSpatialPartition(0, FALSE, GL_DYNAMIC_DRAW_ARB, regionp)
 {
 	mInfiniteFarClip = TRUE;
 	mDrawableType = LLPipeline::RENDER_TYPE_WATER;
 	mPartitionType = LLViewerRegion::PARTITION_WATER;
 }
 
-LLVoidWaterPartition::LLVoidWaterPartition()
+LLVoidWaterPartition::LLVoidWaterPartition(LLViewerRegion* regionp) : LLWaterPartition(regionp)
 {
 	mOcclusionEnabled = FALSE;
 	mDrawableType = LLPipeline::RENDER_TYPE_VOIDWATER;
diff --git a/indra/newview/llvowlsky.cpp b/indra/newview/llvowlsky.cpp
index 7f17fd3e56..717f215d3d 100644
--- a/indra/newview/llvowlsky.cpp
+++ b/indra/newview/llvowlsky.cpp
@@ -394,7 +394,7 @@ BOOL LLVOWLSky::updateGeometry(LLDrawable * drawable)
 			segment->flush();
 		}
 	
-		llinfos << "completed in " << llformat("%.2f", timer.getElapsedTimeF32()) << "seconds" << llendl;
+		llinfos << "completed in " << llformat("%.2f", timer.getElapsedTimeF32().value()) << "seconds" << llendl;
 	}
 #else
 	mStripsVerts = new LLVertexBuffer(LLDrawPoolWLSky::SKY_VERTEX_DATA_MASK, GL_STATIC_DRAW_ARB);
diff --git a/indra/newview/llwearablelist.cpp b/indra/newview/llwearablelist.cpp
index 6f6411ce3c..0eb00f7191 100644
--- a/indra/newview/llwearablelist.cpp
+++ b/indra/newview/llwearablelist.cpp
@@ -136,7 +136,6 @@ void LLWearableList::processGetAssetReply( const char* filename, const LLAssetID
 		{
 			LLFile::remove(std::string(filename));
 		}
-		LLViewerStats::getInstance()->incStat( LLViewerStats::ST_DOWNLOAD_FAILED );
 
 		LL_WARNS("Wearable") << "Wearable download failed: " << LLAssetStorage::getErrorString( status ) << " " << uuid << LL_ENDL;
 		switch( status )
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 09d17b3701..12eea513da 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -55,7 +55,7 @@
 #include "message.h"
 #include "pipeline.h"
 #include "llappviewer.h"		// for do_disconnect()
-
+#include "llscenemonitor.h"
 #include <deque>
 #include <queue>
 #include <map>
@@ -110,6 +110,7 @@ LLWorld::LLWorld() :
 	gGL.getTexUnit(0)->bind(mDefaultWaterTexturep);
 	mDefaultWaterTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
 
+	LLViewerRegion::sVOCacheCullingEnabled = (BOOL)gSavedSettings.getBOOL("ObjectCacheViewCullingEnabled");
 }
 
 
@@ -133,6 +134,11 @@ void LLWorld::destroyClass()
 	{
 		mEdgeWaterObjects[i] = NULL;
 	}
+
+	//make all visible drawbles invisible.
+	LLDrawable::incrementVisible();
+
+	LLSceneMonitor::getInstance()->destroyClass();
 }
 
 
@@ -599,7 +605,8 @@ void LLWorld::updateVisibilities()
 		if (part)
 		{
 			LLSpatialGroup* group = (LLSpatialGroup*) part->mOctree->getListener(0);
-			if (LLViewerCamera::getInstance()->AABBInFrustum(group->mBounds[0], group->mBounds[1]))
+			const LLVector4a* bounds = group->getBounds();
+			if (LLViewerCamera::getInstance()->AABBInFrustum(bounds[0], bounds[1]))
 			{
 				mCulledRegionList.erase(curiter);
 				mVisibleRegionList.push_back(regionp);
@@ -622,7 +629,8 @@ void LLWorld::updateVisibilities()
 		if (part)
 		{
 			LLSpatialGroup* group = (LLSpatialGroup*) part->mOctree->getListener(0);
-			if (LLViewerCamera::getInstance()->AABBInFrustum(group->mBounds[0], group->mBounds[1]))
+			const LLVector4a* bounds = group->getBounds();
+			if (LLViewerCamera::getInstance()->AABBInFrustum(bounds[0], bounds[1]))
 			{
 				regionp->calculateCameraDistance();
 				regionp->getLand().updatePatchVisibilities(gAgent);
@@ -660,6 +668,13 @@ void LLWorld::updateRegions(F32 max_update_time)
 			did_one = TRUE;
 		}
 	}
+
+	mNumOfActiveCachedObjects = 0;
+	for (region_list_t::iterator iter = mRegionList.begin();
+		 iter != mRegionList.end(); ++iter)
+	{
+		mNumOfActiveCachedObjects += (*iter)->getNumOfActiveCachedObjects();
+	}
 }
 
 void LLWorld::updateParticles()
@@ -692,8 +707,10 @@ void LLWorld::updateNetStats()
 	{
 		LLViewerRegion* regionp = *iter;
 		regionp->updateNetStats();
-		bits += regionp->mBitStat.getCurrent();
-		packets += llfloor( regionp->mPacketsStat.getCurrent() );
+		bits += regionp->mBitsReceived;
+		packets += llfloor( regionp->mPacketsReceived );
+		regionp->mBitsReceived = 0.f;
+		regionp->mPacketsReceived = 0.f;
 	}
 
 	S32 packets_in = gMessageSystem->mPacketsIn - mLastPacketsIn;
@@ -702,19 +719,16 @@ void LLWorld::updateNetStats()
 
 	S32 actual_in_bits = gMessageSystem->mPacketRing.getAndResetActualInBits();
 	S32 actual_out_bits = gMessageSystem->mPacketRing.getAndResetActualOutBits();
-	LLViewerStats::getInstance()->mActualInKBitStat.addValue(actual_in_bits/1024.f);
-	LLViewerStats::getInstance()->mActualOutKBitStat.addValue(actual_out_bits/1024.f);
-	LLViewerStats::getInstance()->mKBitStat.addValue(bits/1024.f);
-	LLViewerStats::getInstance()->mPacketsInStat.addValue(packets_in);
-	LLViewerStats::getInstance()->mPacketsOutStat.addValue(packets_out);
-	LLViewerStats::getInstance()->mPacketsLostStat.addValue(gMessageSystem->mDroppedPackets);
+
+	add(LLStatViewer::ACTUAL_IN_KBIT, LLTrace::Bits(actual_in_bits));
+	add(LLStatViewer::ACTUAL_OUT_KBIT, LLTrace::Bits(actual_out_bits));
+	add(LLStatViewer::KBIT, LLTrace::Bits(bits));
+	add(LLStatViewer::PACKETS_IN, packets_in);
+	add(LLStatViewer::PACKETS_OUT, packets_out);
+	add(LLStatViewer::PACKETS_LOST, packets_lost);
 	if (packets_in)
 	{
-		LLViewerStats::getInstance()->mPacketsLostPercentStat.addValue(100.f*((F32)packets_lost/(F32)packets_in));
-	}
-	else
-	{
-		LLViewerStats::getInstance()->mPacketsLostPercentStat.addValue(0.f);
+		sample(LLStatViewer::PACKETS_LOST_PERCENT, 100.f * ((F32)packets_lost/(F32)packets_in));
 	}
 
 	mLastPacketsIn = gMessageSystem->mPacketsIn;
@@ -1127,6 +1141,7 @@ void send_agent_pause()
 	}
 
 	gObjectList.mWasPaused = TRUE;
+	LLViewerStats::instance().getRecording().stop();
 }
 
 
@@ -1156,8 +1171,8 @@ void send_agent_resume()
 		gMessageSystem->sendReliable(regionp->getHost());
 	}
 
-	// Reset the FPS counter to avoid an invalid fps
-	LLViewerStats::getInstance()->mFPSStat.start();
+	// Resume data collection to ignore invalid rates
+	LLViewerStats::instance().getRecording().resume();
 
 	LLAppViewer::instance()->resumeMainloopTimeout();
 }
diff --git a/indra/newview/llworld.h b/indra/newview/llworld.h
index f350009d10..8187142b2b 100644
--- a/indra/newview/llworld.h
+++ b/indra/newview/llworld.h
@@ -144,6 +144,7 @@ public:
 	U64 getSpaceTimeUSec() const;
 
 	void getInfo(LLSD& info);
+	U32  getNumOfActiveCachedObjects() const {return mNumOfActiveCachedObjects;}
 
 public:
 	typedef std::list<LLViewerRegion*> region_list_t;
@@ -181,7 +182,7 @@ private:
 	S32 mLastPacketsIn;
 	S32 mLastPacketsOut;
 	S32 mLastPacketsLost;
-
+	U32 mNumOfActiveCachedObjects;
 	U64 mSpaceTimeUSec;
 
 	BOOL mClassicCloudsEnabled;
diff --git a/indra/newview/llworldmapmessage.h b/indra/newview/llworldmapmessage.h
index 12b6ef4792..ac1ea1607c 100644
--- a/indra/newview/llworldmapmessage.h
+++ b/indra/newview/llworldmapmessage.h
@@ -27,6 +27,8 @@
 #ifndef LL_LLWORLDMAPMESSAGE_H
 #define LL_LLWORLDMAPMESSAGE_H
 
+#include "boost/function.hpp"
+
 // Handling of messages (send and process) as well as SLURL callback if necessary
 class LLMessageSystem;
 
diff --git a/indra/newview/llworldmapview.cpp b/indra/newview/llworldmapview.cpp
index ccc513b80d..f821cb1ec1 100644
--- a/indra/newview/llworldmapview.cpp
+++ b/indra/newview/llworldmapview.cpp
@@ -302,8 +302,8 @@ void LLWorldMapView::draw()
 	mVisibleRegions.clear();
 
 	// animate pan if necessary
-	sPanX = lerp(sPanX, sTargetPanX, LLCriticalDamp::getInterpolant(0.1f));
-	sPanY = lerp(sPanY, sTargetPanY, LLCriticalDamp::getInterpolant(0.1f));
+	sPanX = lerp(sPanX, sTargetPanX, LLSmoothInterpolation::getInterpolant(0.1f));
+	sPanY = lerp(sPanY, sTargetPanY, LLSmoothInterpolation::getInterpolant(0.1f));
 
 	const S32 width = getRect().getWidth();
 	const S32 height = getRect().getHeight();
diff --git a/indra/newview/llxmlrpctransaction.cpp b/indra/newview/llxmlrpctransaction.cpp
index 0da70d398b..583196fb7a 100644
--- a/indra/newview/llxmlrpctransaction.cpp
+++ b/indra/newview/llxmlrpctransaction.cpp
@@ -25,6 +25,8 @@
  */
 
 #include "llviewerprecompiledheaders.h"
+// include this to get winsock2 because openssl attempts to include winsock1
+#include "llwin32headerslean.h"
 #include <openssl/x509_vfy.h>
 #include <openssl/ssl.h>
 #include "llsecapi.h"
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 2051772d63..26ceaf512a 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -86,6 +86,7 @@
 #include "llviewerregion.h" // for audio debugging.
 #include "llviewerwindow.h" // For getSpinAxis
 #include "llvoavatarself.h"
+#include "llvocache.h"
 #include "llvoground.h"
 #include "llvosky.h"
 #include "llvotree.h"
@@ -111,6 +112,7 @@
 #include "llfloaterpathfindingconsole.h"
 #include "llfloaterpathfindingcharacters.h"
 #include "llpathfindingpathtool.h"
+#include "llscenemonitor.h"
 
 #ifdef _DEBUG
 // Debug indices is disabled for now for debug performance - djs 4/24/02
@@ -488,7 +490,6 @@ void LLPipeline::init()
 	getPool(LLDrawPool::POOL_BUMP);
 	getPool(LLDrawPool::POOL_GLOW);
 
-	LLViewerStats::getInstance()->mTrianglesDrawnStat.reset();
 	resetFrameStats();
 
 	for (U32 i = 0; i < NUM_RENDER_TYPES; ++i)
@@ -1420,18 +1421,18 @@ S32 LLPipeline::setLightingDetail(S32 level)
 	return mLightingDetail;
 }
 
-class LLOctreeDirtyTexture : public LLOctreeTraveler<LLDrawable>
+class LLOctreeDirtyTexture : public OctreeTraveler
 {
 public:
 	const std::set<LLViewerFetchedTexture*>& mTextures;
 
 	LLOctreeDirtyTexture(const std::set<LLViewerFetchedTexture*>& textures) : mTextures(textures) { }
 
-	virtual void visit(const LLOctreeNode<LLDrawable>* node)
+	virtual void visit(const OctreeNode* node)
 	{
 		LLSpatialGroup* group = (LLSpatialGroup*) node->getListener(0);
 
-		if (!group->isState(LLSpatialGroup::GEOM_DIRTY) && !group->isEmpty())
+		if (!group->hasState(LLSpatialGroup::GEOM_DIRTY) && !group->isEmpty())
 		{
 			for (LLSpatialGroup::draw_map_t::iterator i = group->mDrawMap.begin(); i != group->mDrawMap.end(); ++i)
 			{
@@ -1620,11 +1621,9 @@ void LLPipeline::addPool(LLDrawPool *new_poolp)
 
 void LLPipeline::allocDrawable(LLViewerObject *vobj)
 {
-	LLDrawable *drawable = new LLDrawable();
+	LLDrawable *drawable = new LLDrawable(vobj);
 	vobj->mDrawable = drawable;
 	
-	drawable->mVObjp     = vobj;
-	
 	//encompass completely sheared objects by taking 
 	//the most extreme point possible (<1,1,0.5>)
 	drawable->setRadius(LLVector3(1,1,0.5f).scaleVec(vobj->getScale()).length());
@@ -1810,7 +1809,7 @@ void LLPipeline::resetFrameStats()
 {
 	assertInitialized();
 
-	LLViewerStats::getInstance()->mTrianglesDrawnStat.addValue(mTrianglesDrawn/1000.f);
+	add(LLStatViewer::TRIANGLES_DRAWN, mTrianglesDrawn);
 
 	if (mBatchCount > 0)
 	{
@@ -1929,6 +1928,8 @@ void LLPipeline::updateMovedList(LLDrawable::drawable_vector_t& moved_list)
 
 static LLFastTimer::DeclareTimer FTM_OCTREE_BALANCE("Balance Octree");
 static LLFastTimer::DeclareTimer FTM_UPDATE_MOVE("Update Move");
+static LLFastTimer::DeclareTimer FTM_RETEXTURE("Retexture");
+static LLFastTimer::DeclareTimer FTM_MOVED_LIST("Moved List");
 
 void LLPipeline::updateMove()
 {
@@ -1942,8 +1943,7 @@ void LLPipeline::updateMove()
 	assertInitialized();
 
 	{
-		static LLFastTimer::DeclareTimer ftm("Retexture");
-		LLFastTimer t(ftm);
+		LLFastTimer t(FTM_RETEXTURE);
 
 		for (LLDrawable::drawable_set_t::iterator iter = mRetexturedList.begin();
 			 iter != mRetexturedList.end(); ++iter)
@@ -1958,8 +1958,7 @@ void LLPipeline::updateMove()
 	}
 
 	{
-		static LLFastTimer::DeclareTimer ftm("Moved List");
-		LLFastTimer t(ftm);
+		LLFastTimer t(FTM_MOVED_LIST);
 		updateMovedList(mMovedList);
 	}
 
@@ -2048,7 +2047,7 @@ void check_references(LLSpatialGroup* group, LLDrawable* drawable)
 {
 	for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 	{
-		if (drawable == *i)
+		if (drawable == (LLDrawable*)(*i)->getDrawable())
 		{
 			llerrs << "LLDrawable deleted while actively reference by LLPipeline." << llendl;
 		}
@@ -2070,10 +2069,13 @@ void check_references(LLSpatialGroup* group, LLFace* face)
 {
 	for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 	{
-		LLDrawable* drawable = *i;
+		LLDrawable* drawable = (LLDrawable*)(*i)->getDrawable();
+		if(drawable)
+		{
 		check_references(drawable, face);
 	}			
 }
+}
 
 void LLPipeline::checkReferences(LLFace* face)
 {
@@ -2395,6 +2397,13 @@ void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result, S32 water_cl
 				}
 			}
 		}
+
+		//scan the VO Cache tree
+		LLVOCachePartition* vo_part = region->getVOCachePartition();
+		if(vo_part)
+		{
+			vo_part->cull(camera);
+		}
 	}
 
 	if (bound_shader)
@@ -2462,8 +2471,9 @@ void LLPipeline::markNotCulled(LLSpatialGroup* group, LLCamera& camera)
 		return;
 	}
 
+	const LLVector4a* bounds = group->getBounds();
 	if (sMinRenderSize > 0.f && 
-			llmax(llmax(group->mBounds[1][0], group->mBounds[1][1]), group->mBounds[1][2]) < sMinRenderSize)
+			llmax(llmax(bounds[1][0], bounds[1][1]), bounds[1][2]) < sMinRenderSize)
 	{
 		return;
 	}
@@ -2788,7 +2798,7 @@ void LLPipeline::updateGeom(F32 max_dtime)
 		
 	S32 count = 0;
 	
-	max_dtime = llmax(update_timer.getElapsedTimeF32()+0.001f, max_dtime);
+	max_dtime = llmax(update_timer.getElapsedTimeF32()+0.001f, LLUnitImplicit<LLUnits::Seconds, F32>(max_dtime));
 	LLSpatialGroup* last_group = NULL;
 	LLSpatialBridge* last_bridge = NULL;
 
@@ -3051,14 +3061,14 @@ void LLPipeline::markRebuild(LLSpatialGroup* group, BOOL priority)
 
 		if (priority)
 		{
-			if (!group->isState(LLSpatialGroup::IN_BUILD_Q1))
+			if (!group->hasState(LLSpatialGroup::IN_BUILD_Q1))
 			{
 				llassert_always(!mGroupQ1Locked);
 
 				mGroupQ1.push_back(group);
 				group->setState(LLSpatialGroup::IN_BUILD_Q1);
 
-				if (group->isState(LLSpatialGroup::IN_BUILD_Q2))
+				if (group->hasState(LLSpatialGroup::IN_BUILD_Q2))
 				{
 					LLSpatialGroup::sg_vector_t::iterator iter = std::find(mGroupQ2.begin(), mGroupQ2.end(), group);
 					if (iter != mGroupQ2.end())
@@ -3069,7 +3079,7 @@ void LLPipeline::markRebuild(LLSpatialGroup* group, BOOL priority)
 				}
 			}
 		}
-		else if (!group->isState(LLSpatialGroup::IN_BUILD_Q2 | LLSpatialGroup::IN_BUILD_Q1))
+		else if (!group->hasState(LLSpatialGroup::IN_BUILD_Q2 | LLSpatialGroup::IN_BUILD_Q1))
 		{
 			llassert_always(!mGroupQ2Locked);
 			mGroupQ2.push_back(group);
@@ -3144,7 +3154,7 @@ void LLPipeline::stateSort(LLCamera& camera, LLCullResult &result)
 			group->setVisible();
 			for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 			{
-				markVisible(*i, camera);
+				markVisible((LLDrawable*)(*i)->getDrawable(), camera);
 			}
 
 			if (!sDelayVBUpdate)
@@ -3223,6 +3233,8 @@ void LLPipeline::stateSort(LLCamera& camera, LLCullResult &result)
 	}
 		
 	postSort(camera);	
+
+	LLSceneMonitor::getInstance()->fetchQueryResult();
 }
 
 void LLPipeline::stateSort(LLSpatialGroup* group, LLCamera& camera)
@@ -3231,8 +3243,7 @@ void LLPipeline::stateSort(LLSpatialGroup* group, LLCamera& camera)
 	{
 		for (LLSpatialGroup::element_iter i = group->getDataBegin(); i != group->getDataEnd(); ++i)
 		{
-			LLDrawable* drawablep = *i;
-			stateSort(drawablep, camera);
+			stateSort((LLDrawable*)(*i)->getDrawable(), camera);
 		}
 
 		if (LLViewerCamera::sCurCameraID == LLViewerCamera::CAMERA_WORLD)
@@ -3351,7 +3362,10 @@ void forAllDrawables(LLCullResult::sg_iterator begin,
 	{
 		for (LLSpatialGroup::element_iter j = (*i)->getDataBegin(); j != (*i)->getDataEnd(); ++j)
 		{
-			func(*j);	
+			if((*j)->hasDrawable())
+			{
+				func((LLDrawable*)(*j)->getDrawable());	
+			}
 		}
 	}
 }
@@ -3579,7 +3593,7 @@ void LLPipeline::postSort(LLCamera& camera)
 			continue;
 		}
 
-		if (group->isState(LLSpatialGroup::NEW_DRAWINFO) && group->isState(LLSpatialGroup::GEOM_DIRTY))
+		if (group->hasState(LLSpatialGroup::NEW_DRAWINFO) && group->hasState(LLSpatialGroup::GEOM_DIRTY))
 		{ //no way this group is going to be drawable without a rebuild
 			group->rebuildGeom();
 		}
@@ -3761,33 +3775,6 @@ void LLPipeline::postSort(LLCamera& camera)
 		}
 	}
 
-	/*static LLFastTimer::DeclareTimer FTM_TRANSFORM_WAIT("Transform Fence");
-	static LLFastTimer::DeclareTimer FTM_TRANSFORM_DO_WORK("Transform Work");
-	if (use_transform_feedback)
-	{ //using transform feedback, wait for transform feedback to complete
-		LLFastTimer t(FTM_TRANSFORM_WAIT);
-
-		S32 done = 0;
-		//glGetQueryivARB(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, GL_CURRENT_QUERY, &count);
-		
-		glGetQueryObjectivARB(mMeshDirtyQueryObject, GL_QUERY_RESULT_AVAILABLE, &done);
-		
-		while (!done)
-		{ 
-			{
-				LLFastTimer t(FTM_TRANSFORM_DO_WORK);
-				F32 max_time = llmin(gFrameIntervalSeconds*10.f, 1.f);
-				//do some useful work while we wait
-				LLAppViewer::getTextureCache()->update(max_time); // unpauses the texture cache thread
-				LLAppViewer::getImageDecodeThread()->update(max_time); // unpauses the image thread
-				LLAppViewer::getTextureFetch()->update(max_time); // unpauses the texture fetch thread
-			}
-			glGetQueryObjectivARB(mMeshDirtyQueryObject, GL_QUERY_RESULT_AVAILABLE, &done);
-		}
-
-		mTransformFeedbackPrimitives = 0;
-	}*/
-						
 	//LLSpatialGroup::sNoDelete = FALSE;
 	llpushcallstacks ;
 }
@@ -4963,7 +4950,7 @@ void LLPipeline::renderDebug()
 		{
 			DebugBlip& blip = *iter;
 
-			blip.mAge += gFrameIntervalSeconds;
+			blip.mAge += gFrameIntervalSeconds.value();
 			if (blip.mAge > 2.f)
 			{
 				mDebugBlips.erase(iter++);
@@ -4973,7 +4960,7 @@ void LLPipeline::renderDebug()
 				iter++;
 			}
 
-			blip.mPosition.mV[2] += gFrameIntervalSeconds*2.f;
+			blip.mPosition.mV[2] += gFrameIntervalSeconds.value()*2.f;
 
 			gGL.color4fv(blip.mColor.mV);
 			gGL.vertex3fv(blip.mPosition.mV);
@@ -5784,7 +5771,7 @@ void LLPipeline::calcNearbyLights(LLCamera& camera)
 				{
 					if (farthest_light->fade >= 0.f)
 					{
-						farthest_light->fade = -gFrameIntervalSeconds;
+						farthest_light->fade = -(gFrameIntervalSeconds.value());
 					}
 				}
 				else
@@ -5880,12 +5867,12 @@ void LLPipeline::setupHWLights(LLDrawPool* pool)
 				if (fade >= 0.f)
 				{
 					fade = fade / LIGHT_FADE_TIME;
-					((Light*) (&(*iter)))->fade += gFrameIntervalSeconds;
+					((Light*) (&(*iter)))->fade += gFrameIntervalSeconds.value();
 				}
 				else
 				{
 					fade = 1.f + fade / LIGHT_FADE_TIME;
-					((Light*) (&(*iter)))->fade -= gFrameIntervalSeconds;
+					((Light*) (&(*iter)))->fade -= gFrameIntervalSeconds.value();
 				}
 				fade = llclamp(fade,0.f,1.f);
 				light_color *= fade;
@@ -7200,7 +7187,7 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 			}
 			else if (transition_time < 1.f)
 			{ //currently in a transition, continue interpolating
-				transition_time += 1.f/CameraFocusTransitionTime*gFrameIntervalSeconds;
+				transition_time += 1.f/CameraFocusTransitionTime*gFrameIntervalSeconds.value();
 				transition_time = llmin(transition_time, 1.f);
 
 				F32 t = cosf(transition_time*F_PI+F_PI)*0.5f+0.5f;
@@ -9192,7 +9179,7 @@ void LLPipeline::generateHighlight(LLCamera& camera)
 	
 	if (!mHighlightSet.empty())
 	{
-		F32 transition = gFrameIntervalSeconds/RenderHighlightFadeTime;
+		F32 transition = gFrameIntervalSeconds.value()/RenderHighlightFadeTime;
 
 		LLGLDisable test(GL_ALPHA_TEST);
 		LLGLDepthTest depth(GL_FALSE);
@@ -9827,7 +9814,9 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
 
 	if (gen_shadow)
 	{
-		F32 fade_amt = gFrameIntervalSeconds * llmax(LLViewerCamera::getInstance()->getVelocityStat()->getCurrentPerSec(), 1.f);
+		LLTrace::CountStatHandle<>* velocity_stat = LLViewerCamera::getVelocityStat();
+		F32 fade_amt = gFrameIntervalSeconds.value() 
+			* llmax(LLTrace::get_frame_recording().getLastRecordingPeriod().getSum(*velocity_stat) / LLTrace::get_frame_recording().getLastRecordingPeriod().getDuration().value(), 1.0);
 
 		//update shadow targets
 		for (U32 i = 0; i < 2; i++)
diff --git a/indra/newview/skins/default/xui/da/floater_lagmeter.xml b/indra/newview/skins/default/xui/da/floater_lagmeter.xml
deleted file mode 100644
index 149d174c34..0000000000
--- a/indra/newview/skins/default/xui/da/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="LAG METER">
-	<floater.string name="max_title_msg">
-		Lag måler
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Klient
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, vindue i baggrund
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Klients billeder/sek under [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Klients billeder/sek mellem [CLIENT_FRAME_RATE_CRITICAL] og [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Mulig årsag: &apos;Vis afstand&apos; sat for højt i grafik indstillinger
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Mulig årsag: Billeder hentes
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Mulig årsag: For mange billeder i hukommelse
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Mulig årsag: For mange komplekse objekter i scenariet
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Netværk
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Forbindelsen mister over [NETWORK_PACKET_LOSS_CRITICAL]% pakker
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Forbindelsen mister [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]% pakker
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Forbindelsens ping tider er over [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Forbindelsens ping tider er [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Muligvis dårlig forbindelse eller &apos;båndbredde&apos; sat for højt i netværksopsætning.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Muligvis dårlig forbindelse eller fil delings program.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Server
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Simulator framerate er under [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Simulator framerate er mellem [SERVER_FRAME_RATE_CRITICAL] og [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Mulig årsag: For mange fysiske objekter
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Mulig årsag: For mange objekter med script
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Mulig årsag: For meget netværks trafik
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Mulig årsag: For mange avatarer i bevægelse i regionen
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Mulig årsag: For mange billed udregninger
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Mulig årsag: Simulator belastning for stor
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button label="" label_selected="" name="client_lagmeter" tool_tip="Status for klient lag"/>
-	<text name="client">
-		Klient
-	</text>
-	<text name="client_text">
-		Normal
-	</text>
-	<button label="" label_selected="" name="network_lagmeter" tool_tip="Network lag status"/>
-	<text name="network">
-		Netværk
-	</text>
-	<text name="network_text">
-		Normal
-	</text>
-	<button label="" label_selected="" name="server_lagmeter" tool_tip="Status for server lag"/>
-	<text name="server">
-		Server
-	</text>
-	<text name="server_text">
-		Normal
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Ændre størrelse"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/de/floater_lagmeter.xml b/indra/newview/skins/default/xui/de/floater_lagmeter.xml
deleted file mode 100644
index 45ff37c147..0000000000
--- a/indra/newview/skins/default/xui/de/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="LAG METER">
-	<floater.string name="max_title_msg">
-		Lag-Anzeige
-	</floater.string>
-	<floater.string name="max_width_px">
-		350
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Client
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, Fenster im Hintergrund
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Client-Frame-Rate unter [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Client-Frame-Rate zwischen [CLIENT_FRAME_RATE_CRITICAL] und [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Mögliche Ursache: Sichtweite zu groß
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Mögliche Ursache: Bilder werden geladen
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Mögliche Ursache: Zu viele Bilder im Speicher
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Mögliche Ursache: Zu viele komplexe Objekte in der Szene
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Netzwerk
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Paketverlust der Verbindung übersteigt [NETWORK_PACKET_LOSS_CRITICAL]%
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Paketverlust der Verbindung liegt bei [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]%
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Ping-Zeit der Verbindung übersteigt [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Ping-Zeit der Verbindung liegt bei [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Möglicherweise schlechte Verbindung oder zu hoher Wert für „Bandbreite“.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Möglicherweise schlechte Verbindung oder File-Sharing-Anwendung.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Server
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Simulator-Frame-Rate liegt unter [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Simulator-Frame-Rate liegt zwischen [SERVER_FRAME_RATE_CRITICAL] und [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Mögliche Ursache: Zu viele physische Objekte
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Mögliche Ursache: Zu viele geskriptete Objekte
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Mögliche Ursache: Zu viel Netzwerktraffic
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Mögliche Ursache: Zu viele Personen in Bewegung in der Region
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Mögliche Ursache: Zu viele Bildberechnungen
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Mögliche Ursache: Zu hohe Simulator-Last
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="Client-Lag-Status"/>
-	<text name="client">
-		Client
-	</text>
-	<text name="client_text">
-		Normal
-	</text>
-	<button name="network_lagmeter" tool_tip="Netzwerk-Lag-Status"/>
-	<text name="network">
-		Netzwerk
-	</text>
-	<text name="network_text">
-		Normal
-	</text>
-	<button name="server_lagmeter" tool_tip="Server-Lag-Status"/>
-	<text name="server">
-		Server
-	</text>
-	<text name="server_text">
-		Normal
-	</text>
-	<button label="&gt;&gt; " name="minimize" tool_tip="Fenstergröße ändern"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/en/floater_lagmeter.xml b/indra/newview/skins/default/xui/en/floater_lagmeter.xml
deleted file mode 100644
index b24c745bdd..0000000000
--- a/indra/newview/skins/default/xui/en/floater_lagmeter.xml
+++ /dev/null
@@ -1,336 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<floater
- legacy_header_height="18"
- height="170"
- layout="topleft"
- name="floater_lagmeter"
- help_topic="floater_lagmeter"
- save_rect="true"
- title="LAG METER"
- width="350">
-    <floater.string
-     name="max_title_msg">
-        Lag Meter
-    </floater.string>
-    <floater.string
-     name="max_width_px">
-        360
-    </floater.string>
-    <floater.string
-     name="min_title_msg">
-        Lag
-    </floater.string>
-    <floater.string
-     name="min_width_px">
-        90
-    </floater.string>
-    <floater.string
-     name="client_text_msg">
-        Client
-    </floater.string>
-    <floater.string
-     name="client_frame_rate_critical_fps">
-        10
-    </floater.string>
-    <floater.string
-     name="client_frame_rate_warning_fps">
-        15
-    </floater.string>
-    <floater.string
-     name="client_frame_time_window_bg_msg">
-        Normal, window in background
-    </floater.string>
-    <floater.string
-     name="client_frame_time_critical_msg">
-        Client frame rate below [CLIENT_FRAME_RATE_CRITICAL]
-    </floater.string>
-    <floater.string
-     name="client_frame_time_warning_msg">
-        Client frame rate between [CLIENT_FRAME_RATE_CRITICAL] and [CLIENT_FRAME_RATE_WARNING]
-    </floater.string>
-    <floater.string
-     name="client_frame_time_normal_msg">
-        Normal
-    </floater.string>
-    <floater.string
-     name="client_draw_distance_cause_msg">
-        Possible cause: Draw distance set too high
-    </floater.string>
-    <floater.string
-     name="client_texture_loading_cause_msg">
-        Possible cause: Images loading
-    </floater.string>
-    <floater.string
-     name="client_texture_memory_cause_msg">
-        Possible cause: Too many images in memory
-    </floater.string>
-    <floater.string
-     name="client_complex_objects_cause_msg">
-        Possible cause: Too many complex objects in scene
-    </floater.string>
-    <floater.string
-     name="network_text_msg">
-        Network
-    </floater.string>
-    <floater.string
-     name="network_packet_loss_critical_pct">
-        10
-    </floater.string>
-    <floater.string
-     name="network_packet_loss_warning_pct">
-        5
-    </floater.string>
-    <floater.string
-     name="network_packet_loss_critical_msg">
-        Connection is dropping over [NETWORK_PACKET_LOSS_CRITICAL]% of packets
-    </floater.string>
-    <floater.string
-     name="network_packet_loss_warning_msg">
-        Connection is dropping [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]% of packets
-    </floater.string>
-    <floater.string
-     name="network_performance_normal_msg">
-        Normal
-    </floater.string>
-    <floater.string
-     name="network_ping_critical_ms">
-        600
-    </floater.string>
-    <floater.string
-     name="network_ping_warning_ms">
-        300
-    </floater.string>
-    <floater.string
-     name="network_ping_critical_msg">
-        Connection ping time is over [NETWORK_PING_CRITICAL] ms
-    </floater.string>
-    <floater.string
-     name="network_ping_warning_msg">
-        Connection ping time is [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-    </floater.string>
-    <floater.string
-     name="network_packet_loss_cause_msg">
-        Possible bad connection or &apos;Bandwidth&apos; pref too high.
-    </floater.string>
-    <floater.string
-     name="network_ping_cause_msg">
-        Possible bad connection or file-sharing app.
-    </floater.string>
-    <floater.string
-     name="server_text_msg">
-        Server
-    </floater.string>
-    <floater.string
-     name="server_frame_rate_critical_fps">
-        20
-    </floater.string>
-    <floater.string
-     name="server_frame_rate_warning_fps">
-        30
-    </floater.string>
-    <floater.string
-     name="server_single_process_max_time_ms">
-        20
-    </floater.string>
-    <floater.string
-     name="server_frame_time_critical_msg">
-        Simulator framerate below [SERVER_FRAME_RATE_CRITICAL]
-    </floater.string>
-    <floater.string
-     name="server_frame_time_warning_msg">
-        Simulator framerate between [SERVER_FRAME_RATE_CRITICAL] and [SERVER_FRAME_RATE_WARNING]
-    </floater.string>
-    <floater.string
-     name="server_frame_time_normal_msg">
-        Normal
-    </floater.string>
-    <floater.string
-     name="server_physics_cause_msg">
-        Possible Cause: Too many physical objects
-    </floater.string>
-    <floater.string
-     name="server_scripts_cause_msg">
-        Possible Cause: Too many scripted objects
-    </floater.string>
-    <floater.string
-     name="server_net_cause_msg">
-        Possible Cause: Too much network traffic
-    </floater.string>
-    <floater.string
-     name="server_agent_cause_msg">
-        Possible Cause: Too many moving people in region
-    </floater.string>
-    <floater.string
-     name="server_images_cause_msg">
-        Possible Cause: Too many image calculations
-    </floater.string>
-    <floater.string
-     name="server_generic_cause_msg">
-        Possible Cause: Simulator load too heavy
-    </floater.string>
-    <floater.string
-     name="smaller_label">
-        &gt;&gt;
-    </floater.string>
-    <floater.string
-     name="bigger_label">
-        &lt;&lt;
-    </floater.string>
-    <button
-     follows="top|left"
-     height="16"
-     image_selected="lag_status_good.tga"
-     image_unselected="lag_status_good.tga"
-     layout="topleft"
-     left="8"
-     name="client_lagmeter"
-     tab_stop="false"
-     tool_tip="Client lag status"
-     top="24"
-     width="16" />
-    <text
-     type="string"
-     length="1"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left_pad="3"
-     name="client"
-     top_delta="0"
-     width="128">
-        Client
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     type="string"
-     length="1"
-     bottom="40"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left="110"
-     name="client_text"
-     right="-10">
-        Normal
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     bottom="56"
-     follows="left|top"
-     height="16"
-     layout="topleft"
-     left="40"
-     name="client_lag_cause"
-     right="-32" />
-    <button
-     follows="top|left"
-     height="16"
-     image_selected="lag_status_good.tga"
-     image_unselected="lag_status_good.tga"
-     layout="topleft"
-     left="8"
-     name="network_lagmeter"
-     tab_stop="false"
-     tool_tip="Network lag status"
-     top="64"
-     width="16" />
-    <text
-     type="string"
-     length="1"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left_pad="3"
-     name="network"
-     top_delta="0"
-     width="128">
-        Network
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     type="string"
-     length="1"
-     bottom="80"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left="110"
-     name="network_text"
-     right="-10">
-        Normal
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     bottom="96"
-     follows="left|top"
-     height="16"
-     layout="topleft"
-     left="40"
-     name="network_lag_cause"
-     right="-32" />
-    <button
-     follows="top|left"
-     height="16"
-     image_selected="lag_status_good.tga"
-     image_unselected="lag_status_good.tga"
-     layout="topleft"
-     left="8"
-     name="server_lagmeter"
-     tab_stop="false"
-     tool_tip="Server lag status"
-     top="104"
-     width="16" />
-    <text
-     type="string"
-     length="1"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left_pad="3"
-     name="server"
-     top_delta="0"
-     width="60">
-        Server
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     type="string"
-     length="1"
-     bottom="120"
-     follows="left|top"
-     font="SansSerif"
-     height="16"
-     layout="topleft"
-     left="110"
-     name="server_text"
-     right="-10">
-        Normal
-    </text>
-    <text
-     invisiblity_control="LagMeterShrunk"
-     bottom="136"
-     follows="left|top"
-     height="16"
-     layout="topleft"
-     left="40"
-     name="server_lag_cause"
-     right="-32" />
-    <button
-     follows="left|top"
-     height="20"
-     label="&gt;&gt;"
-     layout="topleft"
-     left="10"
-     name="minimize"
-	 tool_tip="Toggle floater size"
-     top_delta="24"
-     width="40">
-        <button.commit_callback
-         function="LagMeter.ClickShrink" />
-    </button>
-</floater>
diff --git a/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml
new file mode 100644
index 0000000000..f4021d210a
--- /dev/null
+++ b/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml
@@ -0,0 +1,484 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
+<floater legacy_header_height="18"
+         can_resize="true"
+         height="400"
+         layout="topleft"
+         name="Scene Load Statistics"
+         save_rect="true"
+         save_visibility="true"
+         title="SCENE LOAD STATISTICS"
+         width="260">
+    <button top="20"
+            bottom="60"
+            left="10"
+            width="100"
+            label="Pause"
+            name="playpause"/>
+    <scroll_container follows="top|left|bottom|right"
+                      bottom="400"
+                      layout="topleft"
+                      left="0"
+                      name="statistics_scroll"
+                      reserve_scroll_corner="true"
+                      top="60"
+                      width="260">
+      <container_view follows="top|left|bottom|right"
+                      height="378"
+                      layout="topleft"
+                      left="2"
+                      name="statistics_view"
+                      top="20"
+                      width="245" >
+<!--Basic Section-->
+		  <stat_view name="basic"
+                 label="Basic"
+                 show_label="true"
+                 setting="OpenDebugStatBasic">
+        <stat_bar name="frame difference"
+                  label="Frame Pixel Difference"
+                  orientation="horizontal"
+                  unit_label="%"
+                  stat="FramePixelDifference"
+                  bar_max="100"
+                  tick_spacing="10"
+                  label_spacing="20"
+                  unit_scale="100"
+                  precision="0"/>
+        <stat_bar name="bandwidth"
+                  label="Bandwidth"
+                  orientation="horizontal"
+                  unit_label="kbps"
+                  stat="kbitstat"
+                  bar_max="5000"
+                  tick_spacing="500"
+                  label_spacing="1000"
+                  precision="0"/>
+			  <stat_bar name="packet_loss"
+                  label="Packet Loss"
+                  orientation="horizontal"
+                  unit_label=" %"
+                  stat="packetslostpercentstat"
+                  bar_max="5"
+                  tick_spacing="0.5"
+                  label_spacing="1"
+                  precision="3"
+                  show_bar="false"
+                  show_mean="true"/>
+		  </stat_view>
+<!--Advanced Section-->
+      <stat_view name="advanced"
+                 label="Advanced"
+                 show_label="true"
+                 setting="OpenDebugStatAdvanced">
+			  <stat_view name="render"
+                   label="Render"
+                   show_label="true"
+                   setting="OpenDebugStatRender">
+          <stat_bar name="objs"
+                    label="Total Objects"
+                    orientation="horizontal"
+                    unit_label=""
+                    stat="numobjectsstat"
+                    bar_max="50000"
+                    tick_spacing="5000"
+                    label_spacing="10000"
+                    precision="0"
+                    show_bar="false"/>
+          <stat_bar name="newobjs"
+                    label="New Objects"
+                    orientation="horizontal"
+                    unit_label="/sec"
+                    stat="numnewobjectsstat"
+                    bar_max="2000"
+                    tick_spacing="200"
+                    label_spacing="400"
+                    show_bar="false"/>
+          <stat_bar name="object_cache_hits"
+                    label="Object Cache Hit Rate"
+                    orientation="horizontal"
+                    stat="object_cache_hits"
+                    bar_max="100"
+                    unit_label="%"
+                    tick_spacing="20"
+                    label_spacing="20"
+                    show_history="true"
+                    show_bar="false"/>
+			  </stat_view>
+<!--Texture Stats-->
+			  <stat_view name="texture"
+                   label="Texture"
+                   show_label="true">
+			    <stat_bar name="texture_cache_hits"
+                    label="Cache Hit Rate"
+                    orientation="horizontal"
+                    stat="texture_cache_hits"
+                    bar_max="100.f"
+                    unit_label="%"
+                    tick_spacing="20"
+                    label_spacing="20"
+                    show_history="true"
+                    show_bar="false"/>
+          <stat_bar name="texture_cache_read_latency"
+                    label="Cache Read Latency"
+                    orientation="horizontal"
+                    unit_label="msec"
+                    stat="texture_cache_read_latency"
+                    bar_max="1000.f"
+                    tick_spacing="100"
+                    label_spacing="200"
+                    show_history="true"
+                    show_bar="false"/>
+          <stat_bar name="numimagesstat"
+                    label="Count"
+                    orientation="horizontal"
+                    stat="numimagesstat" 
+                    bar_max="8000.f" 
+                    tick_spacing="2000.f"
+                    label_spacing="4000.f" 
+                    show_bar="false"/>
+			    <stat_bar name="numrawimagesstat"
+                    label="Raw Count"
+                    orientation="horizontal"
+                    stat="numrawimagesstat"
+                    bar_max="8000.f" 
+                    tick_spacing="2000.f"
+                    label_spacing="4000.f" 
+                    show_bar="false"/>
+			  </stat_view>
+<!--Network Stats-->
+			  <stat_view name="network"
+                   label="Network"
+                   show_label="true"
+                   setting="OpenDebugStatNet">
+			    <stat_bar name="packetsinstat"
+                    label="Packets In"
+                    orientation="horizontal"
+                    stat="packetsinstat"
+                    unit_label="/sec" 
+                    bar_max="1024.f" 
+                    tick_spacing="128.f"
+                    label_spacing="256.f" 
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="packetsoutstat"
+                    label="Packets Out"
+                    orientation="horizontal"
+                    stat="packetsoutstat"
+                    unit_label="/sec"  
+                    bar_max="1024.f" 
+                    tick_spacing="128.f"
+                    label_spacing="256.f" 
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="objectkbitstat"
+                    label="Objects"
+                    orientation="horizontal"
+                    stat="objectkbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="texturekbitstat"
+                    label="Texture"
+                    orientation="horizontal"
+                    stat="texturekbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="assetkbitstat"
+                    label="Asset"
+                    orientation="horizontal"
+                    stat="assetkbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="layerskbitstat"
+                    label="Layers"
+                    orientation="horizontal"
+                    stat="layerskbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="actualinkbitstat"
+                    label="Actual In"
+                    orientation="horizontal"
+                    stat="actualinkbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="actualoutkbitstat"
+                    label="Actual Out"
+                    orientation="horizontal"
+                    stat="actualoutkbitstat"
+                    unit_label="kbps"
+                    bar_max="1024.f"
+                    tick_spacing="128.f"
+                    label_spacing="256.f"
+                    precision="1"
+                    show_bar="false"/>
+			    <stat_bar name="vfspendingoperations"
+                    label="VFS Pending Operations"
+                    orientation="horizontal"
+                    stat="vfspendingoperations"
+                    unit_label=" Ops."
+                    show_bar="false"/>
+			  </stat_view>
+		  </stat_view>
+<!--Sim Stats-->
+		  <stat_view name="sim"
+                 label="Simulator"
+                 show_label="true"
+                 setting="OpenDebugStatSim">
+			  <stat_bar name="simobjects"
+                  label="Objects"
+                  orientation="horizontal"
+                  stat="simobjects"
+                  precision="0"
+                  bar_max="30000.f" 
+                  tick_spacing="5000.f"
+                  label_spacing="10000.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simactiveobjects"
+                  label="Active Objects"
+                  orientation="horizontal"
+                  stat="simactiveobjects"
+                  precision="0"
+                  bar_max="5000.f" 
+                  tick_spacing="750.f"
+                  label_spacing="1250.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simactivescripts"
+                  label="Active Scripts"
+                  orientation="horizontal"
+                  stat="simactivescripts"
+                  precision="0"
+                  bar_max="15000.f" 
+                  tick_spacing="1875.f"
+                  label_spacing="3750.f"  
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="siminpps"
+                  label="Packets In"
+                  orientation="horizontal"
+                  stat="siminpps"
+                  unit_label="pps"
+                  precision="0"
+                  bar_max="2000.f" 
+                  tick_spacing="250.f"
+                  label_spacing="1000.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simoutpps"
+                  label="Packets Out"
+                  orientation="horizontal"
+                  stat="simoutpps"
+                  unit_label="pps" 
+                  precision="0"
+                  bar_max="2000.f" 
+                  tick_spacing="250.f"
+                  label_spacing="1000.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simpendingdownloads"
+                  label="Pending Downloads"
+                  orientation="horizontal"
+                  stat="simpendingdownloads"
+                  precision="0"
+                  bar_max="800.f" 
+                  tick_spacing="100.f"
+                  label_spacing="200.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simpendinguploads"
+                  label="Pending Uploads"
+                  orientation="horizontal"
+                  stat="simpendinguploads"
+                  precision="0"
+                  bar_max="100.f" 
+                  tick_spacing="25.f"
+                  label_spacing="50.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_bar name="simtotalunackedbytes"
+                  label="Total Unacked Bytes"
+                  orientation="horizontal"
+                  stat="simtotalunackedbytes"
+                  unit_label="kb"
+                  precision="1"
+                  bar_max="100000.f" 
+                  tick_spacing="25000.f"
+                  label_spacing="50000.f" 
+                  show_bar="false"
+                  show_mean="false"/>
+			  <stat_view name="simperf"
+                   label="Time (ms)"
+                   show_label="true">
+			    <stat_bar name="simframemsec"
+                    label="Total Frame Time"
+                    orientation="horizontal"
+                    stat="simframemsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simnetmsec"
+                    label="Net Time"
+                    orientation="horizontal"
+                    stat="simnetmsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simsimphysicsmsec"
+                    label="Physics Time"
+                    orientation="horizontal"
+                    stat="simsimphysicsmsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simsimothermsec"
+                    label="Simulation Time"
+                    orientation="horizontal"
+                    stat="simsimothermsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simagentmsec"
+                    label="Agent Time"
+                    orientation="horizontal"
+                    stat="simagentmsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simimagesmsec"
+                    label="Images Time"
+                    orientation="horizontal"
+                    stat="simimagesmsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+			    <stat_bar name="simscriptmsec"
+                    label="Script Time"
+                    orientation="horizontal"
+                    stat="simscriptmsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f" 
+                    tick_spacing="10.f"
+                    label_spacing="20.f" 
+                    show_bar="false"
+                    show_mean="false"/>
+          <stat_bar name="simsparemsec"
+                    label="Spare Time"
+                    orientation="horizontal"
+                    stat="simsparemsec"
+                    unit_label="ms"
+                    precision="3"
+                    bar_max="40.f"
+                    tick_spacing="10.f"
+                    label_spacing="20.f"
+                    show_bar="false"
+                    show_mean="false"/>
+<!--2nd level time blocks under 'Details' second-->
+          <stat_view name="timedetails"
+                     label="Time Details (ms)"
+                     show_label="true">
+            <stat_bar name="simsimphysicsstepmsec"
+                      label="  Physics Step"
+                      orientation="horizontal"
+                      stat="simsimphysicsstepmsec"
+                      unit_label="ms"
+                      precision="3"
+                      bar_max="40.f"
+                      tick_spacing="10.f"
+                      label_spacing="20.f"
+                      show_bar="false"
+                      show_mean="false"/>
+            <stat_bar name="simsimphysicsshapeupdatemsec"
+                      label="  Update Phys Shapes"
+                      orientation="horizontal"
+                      stat="simsimphysicsshapeupdatemsec"
+                      unit_label="ms"
+                      precision="3"
+                      bar_max="40.f"
+                      tick_spacing="10.f"
+                      label_spacing="20.f"
+                      show_bar="false"
+                      show_mean="false"/>
+            <stat_bar name="simsimphysicsothermsec"
+                      label="  Physics Other"
+                      orientation="horizontal"
+                      stat="simsimphysicsothermsec"
+                      unit_label="ms"
+                      precision="3"
+                      bar_max="40.f"
+                      tick_spacing="10.f"
+                      label_spacing="20.f"
+                      show_bar="false"
+                      show_mean="false"/>
+            <stat_bar name="simsleepmsec"
+                      label="  Sleep Time"
+                      orientation="horizontal"
+                      stat="simsleepmsec"
+                      unit_label="ms"
+                      precision="3"
+                      bar_max="40.f"
+                      tick_spacing="10.f"
+                      label_spacing="20.f"
+                      show_bar="false"
+                      show_mean="false"/>
+            <stat_bar name="simpumpiomsec"
+                      label="  Pump IO"
+                      orientation="horizontal"
+                      stat="simpumpiomsec"
+                      unit_label="ms"
+                      precision="3"
+                      bar_max="40.f"
+                      tick_spacing="10.f"
+                      label_spacing="20.f"
+                      show_bar="false"
+                      show_mean="false"/>
+          </stat_view>
+			  </stat_view>
+		  </stat_view>
+    </container_view>
+  </scroll_container>
+</floater>
diff --git a/indra/newview/skins/default/xui/en/floater_stats.xml b/indra/newview/skins/default/xui/en/floater_stats.xml
index f9eb16d224..a3f2fb0b9c 100644
--- a/indra/newview/skins/default/xui/en/floater_stats.xml
+++ b/indra/newview/skins/default/xui/en/floater_stats.xml
@@ -35,6 +35,7 @@
 			 setting="OpenDebugStatBasic">
 			<stat_bar
 			   name="fps"
+         orientation="horizontal"
 			   label="FPS"
 			   unit_label="fps"
 			   stat="fpsstat"
@@ -69,7 +70,6 @@
 			   tick_spacing="0.5"
 			   label_spacing="1"
 			   precision="3"
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="true">
 			</stat_bar>
@@ -84,7 +84,6 @@
 			   label_spacing="1000"
 				 precision="0"
 			   show_bar="false"
-			   show_per_sec="false"
 			   show_mean="false">
 			</stat_bar>
 		  </stat_view>
@@ -104,6 +103,7 @@
 				 label="KTris Drawn per Frame"
 				 unit_label="/fr"
 				 stat="trianglesdrawnstat"
+         unit_scale="0.001"
 				 bar_min="0"
 				 bar_max="10000"
 				 tick_spacing="1000"
@@ -116,6 +116,7 @@
 				 name="ktrissec"
 				 label="KTris Drawn per Sec"
 				 unit_label="/sec"
+         unit_scale="0.001"
 				 stat="trianglesdrawnstat"
 				 bar_min="0"
 				 bar_max="200000"
@@ -134,7 +135,6 @@
 				 tick_spacing="5000"
 				 label_spacing="10000"
 				 precision="0"
-				 show_per_sec="false"
 				 show_bar="false">
 			  </stat_bar>
 			  <stat_bar
@@ -146,7 +146,6 @@
 				 bar_max="2000"
 				 tick_spacing="200"
 				 label_spacing="400"
-				 show_per_sec="true"
 				 show_bar="false">
 			  </stat_bar>
        <stat_bar
@@ -159,7 +158,6 @@
 				 tick_spacing="20"
 				 label_spacing="20"
 				 show_history="true"
-         show_per_sec="false"
 				 show_bar="false">
         </stat_bar>
 			</stat_view>
@@ -178,7 +176,6 @@
 				 tick_spacing="20"
 				 label_spacing="20"
 				 show_history="true"
-         show_per_sec="false"
 				 show_bar="false">
         </stat_bar>
         <stat_bar
@@ -191,7 +188,6 @@
 				 tick_spacing="100"
 				 label_spacing="200"
 				 show_history="true"
-         show_per_sec="false"
 				 show_bar="false">
         </stat_bar>
         <stat_bar
@@ -202,7 +198,6 @@
 				 bar_max="8000.f" 
 				 tick_spacing="2000.f"
 				 label_spacing="4000.f" 
-				 show_per_sec="false"
 				 show_bar="false">
 			  </stat_bar>
 
@@ -214,7 +209,6 @@
 				 bar_max="8000.f" 
 				 tick_spacing="2000.f"
 				 label_spacing="4000.f" 
-				 show_per_sec="false"
 				 show_bar="false">
 			  </stat_bar>
 
@@ -222,12 +216,13 @@
 				 name="gltexmemstat"
 				 label="GL Mem"
 				 stat="gltexmemstat"
+         unit_label="MB"
+         unit_scale="0.000001"
 				 bar_min="0.f"
 				 bar_max="400.f" 
 				 tick_spacing="100.f"
 				 label_spacing="200.f" 
 				 precision="1"
-				 show_per_sec="false" 
          show_bar="false">
         </stat_bar>
 
@@ -235,25 +230,27 @@
 				 name="formattedmemstat"
 				 label="Formatted Mem"
 				 stat="formattedmemstat"
+         unit_label="MB"
+         unit_scale="0.000001"
 				 bar_min="0.f"
 				 bar_max="400.f" 
 				 tick_spacing="100.f"
 				 label_spacing="200.f" 
-				 precision="1"
-				 show_per_sec="false" 
+				 precision="3"
          show_bar="false">
         </stat_bar>
 
 			  <stat_bar
 				 name="rawmemstat"
 				 label="Raw Mem"
+         unit_label="MB"
+         unit_scale="0.000001"
 				 stat="rawmemstat"
 				 bar_min="0.f"
 				 bar_max="400.f" 
 				 tick_spacing="100.f"
 				 label_spacing="200.f" 
-				 precision="1"
-				 show_per_sec="false" 
+				 precision="3"
          show_bar="false">
         </stat_bar>
 
@@ -261,12 +258,13 @@
 				 name="glboundmemstat"
 				 label="Bound Mem"
 				 stat="glboundmemstat"
+         unit_label="MB"
+         unit_scale="0.000001"
 				 bar_min="0.f"
 				 bar_max="400.f" 
 				 tick_spacing="100.f"
 				 label_spacing="200.f" 
-				 precision="1"
-				 show_per_sec="false" 
+				 precision="3"
          show_bar="false">
         </stat_bar>
 			</stat_view>
@@ -387,7 +385,6 @@
 				 label="VFS Pending Operations"
 				 stat="vfspendingoperations"
 				 unit_label=" Ops."
-				 show_per_sec="false"
 				 show_bar="false" >
 			  </stat_bar>
 			</stat_view>
@@ -407,7 +404,6 @@
 			   bar_max="1.f" 
 			   tick_spacing="0.16666f"
 			   label_spacing="0.33333f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -421,7 +417,6 @@
 			   bar_max="45.f" 
 			   tick_spacing="7.5f"
 			   label_spacing="15.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -435,7 +430,6 @@
 			   bar_max="45.f" 
 			   tick_spacing="7.5.f"
 			   label_spacing="15.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -453,7 +447,6 @@
 				 bar_max="500.f" 
 				 tick_spacing="50.f"
 				 label_spacing="100.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -467,7 +460,6 @@
 				 bar_max="500.f" 
 				 tick_spacing="50.f"
 				 label_spacing="100.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -482,7 +474,6 @@
 				 bar_max="1024.f" 
 				 tick_spacing="128.f"
 				 label_spacing="256.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -497,7 +488,6 @@
 			   bar_max="100.f" 
 			   tick_spacing="25.f"
 			   label_spacing="50.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -511,7 +501,6 @@
 			   bar_max="80.f" 
 			   tick_spacing="10.f"
 			   label_spacing="40.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -525,7 +514,6 @@
 			   bar_max="40.f" 
 			   tick_spacing="5.f"
 			   label_spacing="10.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -539,7 +527,6 @@
 			   bar_max="30000.f" 
 			   tick_spacing="5000.f"
 			   label_spacing="10000.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -553,7 +540,6 @@
 			   bar_max="5000.f" 
 			   tick_spacing="750.f"
 			   label_spacing="1250.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -567,7 +553,6 @@
 			   bar_max="15000.f" 
 			   tick_spacing="1875.f"
 			   label_spacing="3750.f"  
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -581,7 +566,6 @@
             tick_spacing="10"
             label_spacing="20"
             precision="3"
-            show_per_sec="false"
             show_bar="false"
             show_mean="true">
         </stat_bar>
@@ -596,7 +580,6 @@
 			   bar_max="5000.f" 
 			   tick_spacing="750.f"
 			   label_spacing="1250.f"  
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -615,7 +598,6 @@
               bar_max="40.f"
               tick_spacing="10.f"
               label_spacing="20.f"
-              show_per_sec="false"
               show_bar="false"
               show_mean="false" >
           </stat_bar>
@@ -629,7 +611,6 @@
               bar_max="45"
               tick_spacing="4"
               label_spacing="8"
-              show_per_sec="false"
               show_bar="false">
           </stat_bar>
           <stat_bar
@@ -642,7 +623,6 @@
               tick_spacing="10"
               label_spacing="20"
               precision="1"
-              show_per_sec="false"
               show_bar="false"
               show_mean="true">
           </stat_bar>
@@ -658,7 +638,6 @@
 			   bar_max="2000.f" 
 			   tick_spacing="250.f"
 			   label_spacing="1000.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -673,7 +652,6 @@
 			   bar_max="2000.f" 
 			   tick_spacing="250.f"
 			   label_spacing="1000.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -687,7 +665,6 @@
 			   bar_max="800.f" 
 			   tick_spacing="100.f"
 			   label_spacing="200.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -701,7 +678,6 @@
 			   bar_max="100.f" 
 			   tick_spacing="25.f"
 			   label_spacing="50.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -716,7 +692,6 @@
 			   bar_max="100000.f" 
 			   tick_spacing="25000.f"
 			   label_spacing="50000.f" 
-			   show_per_sec="false"
 			   show_bar="false"
 			   show_mean="false" >
 			</stat_bar>
@@ -735,7 +710,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -750,7 +724,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -765,7 +738,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -780,7 +752,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -795,7 +766,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -810,7 +780,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -825,7 +794,6 @@
 				 bar_max="40.f" 
 				 tick_spacing="10.f"
 				 label_spacing="20.f" 
-				 show_per_sec="false"
 				 show_bar="false"
 				 show_mean="false" >
 			  </stat_bar>
@@ -840,7 +808,6 @@
          bar_max="40.f"
          tick_spacing="10.f"
          label_spacing="20.f"
-         show_per_sec="false"
          show_bar="false"
          show_mean="false" >
         </stat_bar>
@@ -859,7 +826,6 @@
              bar_max="40.f"
              tick_spacing="10.f"
              label_spacing="20.f"
-             show_per_sec="false"
              show_bar="false"
              show_mean="false" >
             </stat_bar>
@@ -873,7 +839,6 @@
              bar_max="40.f"
              tick_spacing="10.f"
              label_spacing="20.f"
-             show_per_sec="false"
              show_bar="false"
              show_mean="false" >
             </stat_bar>
@@ -887,7 +852,6 @@
              bar_max="40.f"
              tick_spacing="10.f"
              label_spacing="20.f"
-             show_per_sec="false"
              show_bar="false"
              show_mean="false" >
             </stat_bar>
@@ -901,7 +865,6 @@
              bar_max="40.f"
              tick_spacing="10.f"
              label_spacing="20.f"
-             show_per_sec="false"
              show_bar="false"
              show_mean="false" >
             </stat_bar>
@@ -915,7 +878,6 @@
              bar_max="40.f"
              tick_spacing="10.f"
              label_spacing="20.f"
-             show_per_sec="false"
              show_bar="false"
              show_mean="false" >
             </stat_bar>
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index caa36e7302..2f0acba23e 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -1376,6 +1376,14 @@
                  function="Floater.Toggle"
                  parameter="stats" />
             </menu_item_check>
+            <menu_item_call
+             label="Scene Load Statistics"
+             name="Scene Load Statistics"
+             shortcut="control|shift|2">
+                <on_click
+                 function="Floater.Show"
+                 parameter="scene_load_stats" />
+            </menu_item_call>
       <menu_item_check
         label="Show Draw Weight for Avatars"
         name="Avatar Rendering Cost">
@@ -1981,6 +1989,16 @@
                function="Advanced.ToggleConsole"
                parameter="scene view" />
             </menu_item_check>
+            <menu_item_check
+                 label="Scene Loading Monitor"
+                 name="Scene Loading Monitor">
+              <menu_item_check.on_check
+               function="Advanced.CheckConsole"
+               parameter="scene monitor" />
+              <menu_item_check.on_click
+               function="Advanced.ToggleConsole"
+               parameter="scene monitor" />
+            </menu_item_check>
             <menu_item_call
               enabled="false"
               visible="false"
diff --git a/indra/newview/skins/default/xui/es/floater_lagmeter.xml b/indra/newview/skins/default/xui/es/floater_lagmeter.xml
deleted file mode 100644
index 227689a194..0000000000
--- a/indra/newview/skins/default/xui/es/floater_lagmeter.xml
+++ /dev/null
@@ -1,154 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="MEDIDOR DEL LAG">
-	<floater.string name="max_title_msg">
-		Medidor del lag
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Cliente
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, ventana en segundo plano
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Frames del cliente valorados por debajo de [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Frames del cliente valorados entre [CLIENT_FRAME_RATE_CRITICAL] y [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Posible causa: distancia de dibujo fijada muy alta
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Posible causa: imágenes cargándose
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Posible causa: demasiadas imágenes en la memoria
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Posible causa: demasiados objetos complejos en la escena
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Red
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		La conexión deja caer más del [NETWORK_PACKET_LOSS_CRITICAL]% de los paquetes
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		La conexión deja caer [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]% de los paquetes
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		El tiempo de conexión -ping- supera los [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		El tiempo de conexión -ping- es de [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Quizá una mala conexión o un ancho de banda fijado demasiado alto.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Quizá una mala conexión o una aplicación de archivos compartidos.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Servidor
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Frecuencia (framerate) por debajo de [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Frecuencia (framerate) entre [SERVER_FRAME_RATE_CRITICAL] y [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Posible causa: demasiados objetos físicos
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Posible causa: demasiados objetos con script
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Posible causa: demasiado tráfico en la red
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Posible causa: demasiada gente moviéndose en la región
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Posible causa: demasiados cálculos de imáganes
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Posible causa: carga del simulador muy pesada
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button label="" label_selected="" name="client_lagmeter" tool_tip="Estado del lag del cliente"/>
-	<text name="client">
-		Cliente
-	</text>
-	<text font="SansSerifSmall" name="client_text">
-		Normal
-	</text>
-	<text left="30" name="client_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="network_lagmeter" tool_tip="Estado del lag de la red"/>
-	<text name="network">
-		Red
-	</text>
-	<text font="SansSerifSmall" name="network_text">
-		Normal
-	</text>
-	<text left="30" name="network_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="server_lagmeter" tool_tip="Estado del lag del servidor"/>
-	<text name="server">
-		Servidor
-	</text>
-	<text font="SansSerifSmall" name="server_text">
-		Normal
-	</text>
-	<text left="30" name="server_lag_cause" right="-32"/>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Cambia el tamaño de la ventana"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/fr/floater_lagmeter.xml b/indra/newview/skins/default/xui/fr/floater_lagmeter.xml
deleted file mode 100644
index 39a861d8bd..0000000000
--- a/indra/newview/skins/default/xui/fr/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="MESURE DU LAG">
-	<floater.string name="max_title_msg">
-		Mesure du lag
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Client
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, fenêtre en arrière-plan
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Taux de défilement [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Taux de défilement entre [CLIENT_FRAME_RATE_CRITICAL] et [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Cause possible : limite d&apos;affichage trop élevée
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Cause possible : images en cours de chargement
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Cause possible : trop d&apos;images en mémoire
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Cause possible : trop d&apos;objets complexes
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Réseau
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		La connexion perd plus de [NETWORK_PACKET_LOSS_CRITICAL] % de paquets
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		La connexion perd entre [NETWORK_PACKET_LOSS_WARNING] % et [NETWORK_PACKET_LOSS_CRITICAL] % de paquets
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Connexion ping > [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Connexion ping entre [NETWORK_PING_WARNING] et [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Mauvaise connexion possible ou réglage de la bande passante trop élevé.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Mauvaise connexion possible ou app. de partage des fichiers
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Serveur
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Défilement du simulateur &lt; [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Défilement simulateur entre [SERVER_FRAME_RATE_CRITICAL] et [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Cause possible : trop d&apos;objets physiques
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Cause possible : trop d&apos;objets scriptés
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Cause possible : trop de trafic réseau
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Cause possible : trop de personnes en mouvement
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Cause possible : trop de calculs d&apos;images
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Cause possible : charge simulateur trop lourde
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="Statut du lag client"/>
-	<text name="client">
-		Client
-	</text>
-	<text name="client_text">
-		Normal
-	</text>
-	<button name="network_lagmeter" tool_tip="Statut du lag réseau"/>
-	<text name="network">
-		Réseau
-	</text>
-	<text name="network_text">
-		Normal
-	</text>
-	<button name="server_lagmeter" tool_tip="Statut du lag serveur"/>
-	<text name="server">
-		Serveur
-	</text>
-	<text name="server_text">
-		Normal
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Activer/désactiver la taille du floater"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/it/floater_lagmeter.xml b/indra/newview/skins/default/xui/it/floater_lagmeter.xml
deleted file mode 100644
index f7b2b1ab4a..0000000000
--- a/indra/newview/skins/default/xui/it/floater_lagmeter.xml
+++ /dev/null
@@ -1,154 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="MISURATORE LAG">
-	<floater.string name="max_title_msg">
-		Misuratore del lag
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Programma in locale
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normale, finestra sullo sfondo
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Velocità dei frame al di sotto di [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Velocità dei frame tra [CLIENT_FRAME_RATE_CRITICAL] e [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normale
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Possibile causa: Campo visivo impostato troppo alto
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Possibile causa: Caricamento immagini
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Possibile causa: Troppe immagini in memoria
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Possibile causa: Troppi oggetti complessi intorno
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Network
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		La connessione sta calando al di sotto del [NETWORK_PACKET_LOSS_CRITICAL]% di pacchetti
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		La connessione sta calando tra il [NETWORK_PACKET_LOSS_WARNING]% e il [NETWORK_PACKET_LOSS_CRITICAL]% di pacchetti
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normale
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Il tempo di ping della connessione è al di sopra di [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Il tempo di ping della connessione è tra [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Possibile cattiva connessione o la larghezza di banda impostata nelle preferenze troppo alta.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Possibile cattiva connessione o l&apos;apertura di un programma di scambio files.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Server
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Velocità dei frame al di sotto di [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Velocità dei frame tra [SERVER_FRAME_RATE_CRITICAL] e [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normale
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Possibile causa: troppi oggetti fisici
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Possibile causa: troppi oggetti scriptati
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Possibile causa: eccessivo traffico sulla rete
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Possibile causa: troppi residenti in movimento nella regione
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Possibile causa: troppe elaborazioni di immagini
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Possibile causa: carico eccessivo del simulatore
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button label="" label_selected="" name="client_lagmeter" tool_tip="Stato del lag del programma in locale"/>
-	<text name="client">
-		Client
-	</text>
-	<text font="SansSerifSmall" left="145" name="client_text">
-		Normale
-	</text>
-	<text left="30" name="client_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="network_lagmeter" tool_tip="Stato del lag del network"/>
-	<text name="network">
-		Rete
-	</text>
-	<text font="SansSerifSmall" name="network_text">
-		Normale
-	</text>
-	<text left="30" name="network_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="server_lagmeter" tool_tip="Stato del lag del server"/>
-	<text name="server">
-		Server
-	</text>
-	<text font="SansSerifSmall" name="server_text">
-		Normale
-	</text>
-	<text left="30" name="server_lag_cause" right="-32"/>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Cambia dimensioni floater"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ja/floater_lagmeter.xml b/indra/newview/skins/default/xui/ja/floater_lagmeter.xml
deleted file mode 100644
index e3546cd837..0000000000
--- a/indra/newview/skins/default/xui/ja/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="ラグメーター">
-	<floater.string name="max_title_msg">
-		ラグ メーター
-	</floater.string>
-	<floater.string name="max_width_px">
-		350
-	</floater.string>
-	<floater.string name="min_title_msg">
-		ラグ
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		クライアント
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		ノーマル、ウィンドウは背景に
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		クライアント フレームレート ＜ [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		クライアント フレームレート: [CLIENT_FRAME_RATE_CRITICAL] ～ [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		ノーマル
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		考えられる原因: 描画距離の設定が大きすぎる
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		考えられる原因: 画像のロード中
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		考えられる原因: メモリ内の画像数が多すぎる
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		考えられる原因: 画面に含まれる複雑なオブジェクトが多すぎる
-	</floater.string>
-	<floater.string name="network_text_msg">
-		ネットワーク
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		接続でドロップされるパケットの割合: ＞ [NETWORK_PACKET_LOSS_CRITICAL]
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		接続でドロップされるパケットの割合:[NETWORK_PACKET_LOSS_WARNING] ～ [NETWORK_PACKET_LOSS_CRITICAL]
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		ノーマル
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		接続の ping 時間: ＞ [NETWORK_PING_CRITICAL] ミリ秒
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		接続の ping 時間: [NETWORK_PING_WARNING] ～ [NETWORK_PING_CRITICAL] ミリ秒
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		接続不良になっているか、帯域幅設定が高すぎます。
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		接続不良になっているか、ファイル共有アプリケーションに問題があります。
-	</floater.string>
-	<floater.string name="server_text_msg">
-		サーバー
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		シミュレーターのフレームレート: ＜ [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		シミュレーターのフレームレート: [SERVER_FRAME_RATE_CRITICAL] ～ [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		ノーマル
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		考えられる原因: 物理的オブジェクトが多すぎる
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		考えられる原因: スクリプトを含むオブジェクトが多すぎる
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		考えられる原因: ネットワーク トラフィック過大
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		考えられる原因: 地域内にて動いているアバターが多すぎる
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		考えられる原因: 画像計算が多すぎる
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		考えられる原因: シミュレーターの過負荷
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="クライアント ラグ ステータス"/>
-	<text name="client">
-		クライアント
-	</text>
-	<text name="client_text">
-		ノーマル
-	</text>
-	<button name="network_lagmeter" tool_tip="ネットワーク ラグ ステータス"/>
-	<text name="network">
-		ネットワーク
-	</text>
-	<text name="network_text">
-		ノーマル
-	</text>
-	<button name="server_lagmeter" tool_tip="サーバー ラグ ステータス"/>
-	<text name="server">
-		サーバー
-	</text>
-	<text name="server_text">
-		ノーマル
-	</text>
-	<button label="&gt;&gt; " name="minimize" tool_tip="フローターのサイズをトグル"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/pl/floater_lagmeter.xml b/indra/newview/skins/default/xui/pl/floater_lagmeter.xml
deleted file mode 100644
index 8038550bcb..0000000000
--- a/indra/newview/skins/default/xui/pl/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="POMIAR LAGÓW">
-	<floater.string name="max_title_msg">
-		Pomiar lagów
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Lag
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Klient
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		W normie, okno w tle
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Ilość klatek na sekundę klienta poniżej [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Ilość klatek na sekundę pomiędzy [CLIENT_FRAME_RATE_CRITICAL] i [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		W normie
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Przyczyna: dystans rysowania jest za wysoki
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Przyczyna: ładowanie obrazu
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Przyczyna: za dużo obrazów w pamięci
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Przyczyna: za dużo złożonych obiektów
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Sieć
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Utrata pakietów przekracza [NETWORK_PACKET_LOSS_CRITICAL]%
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Utrata pakietów przekracza [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]%
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		W normie
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Fatalny ping - [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Wolny ping - [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Złe połączenie lub przepustowość.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Złe połączenie lub aplikacja współdzieląca pliki.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Serwer
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Ilość klatek na sekundę poniżej [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Ilość klatek na sekundę pomiędzy [SERVER_FRAME_RATE_CRITICAL] i [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		W normie
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Przyczyna: za dużo obiektów fizycznych
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Przyczyna: za dużo obieków skryptowanych
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Przyczyna: za duży ruch w sieci
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Przyczyna: za dużo poruszających się awatarów w regionie
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Przyczyna: za dużo kalkulacji obrazu
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Przyczyna: symulator ładuje się zbyt powoli
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button label="" label_selected="" name="client_lagmeter" tool_tip="Status lagów klienta"/>
-	<text name="client">
-		Klient
-	</text>
-	<text name="client_text">
-		W normie
-	</text>
-	<button label="" label_selected="" name="network_lagmeter" tool_tip="Network lag status"/>
-	<text name="network">
-		Sieć
-	</text>
-	<text name="network_text">
-		W normie
-	</text>
-	<button label="" label_selected="" name="server_lagmeter" tool_tip="Server lag status"/>
-	<text name="server">
-		Serwer
-	</text>
-	<text name="server_text">
-		W normie
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Złącz rozmiar pliku xml"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/pt/floater_lagmeter.xml b/indra/newview/skins/default/xui/pt/floater_lagmeter.xml
deleted file mode 100644
index 9932318293..0000000000
--- a/indra/newview/skins/default/xui/pt/floater_lagmeter.xml
+++ /dev/null
@@ -1,154 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="LAG - Índice">
-	<floater.string name="max_title_msg">
-		Medidor de Atraso
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Atraso
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Cliente
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, janela por baixo
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Taxa de quadros do Cliente abaixo de [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Taxa de quadros do Cliente entre [CLIENT_FRAME_RATE_CRITICAL] e [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Causa possível: Distância de desenho ajustada muito alta
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Causa possível: Carregamento de Imagens
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Causa possível: Muitas imagens na memória
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Causa possível: Muitos objetos complexos na cena
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Rede
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Conexão está caindo para cerca de [NETWORK_PACKET_LOSS_CRITICAL]% de pacotes
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Conexão está caindo [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]% de pacotes
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Tempo de conexão de ping é cerca de  [NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Tempo de conexão de ping é [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Possível conexão ruim ou &apos;Largura de Banda&apos; escolhida muito alta.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Possível conexão ruim ou aplicativos compartilhando arquivos.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Servidor
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Taxa de quadros abaixo de [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Taxa de quadros entre [SERVER_FRAME_RATE_CRITICAL] e [SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Causa possível: Muitos objetos físicos
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Causa possível: Muitos objetos com scripts
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Causa possível: Muito tráfego na rede
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Causa possível: Muitas pessoas se movendo na região
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Causa possível: Muitos cálculos de imagem
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Causa possível: Carga no simulador muito pesada
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button label="" label_selected="" name="client_lagmeter" tool_tip="Status de atraso no Cliente"/>
-	<text name="client">
-		Cliente
-	</text>
-	<text font="SansSerifSmall" name="client_text">
-		Normal
-	</text>
-	<text left="30" name="client_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="network_lagmeter" tool_tip="Status de atraso na rede"/>
-	<text name="network">
-		Rede
-	</text>
-	<text font="SansSerifSmall" name="network_text">
-		Normal
-	</text>
-	<text left="30" name="network_lag_cause" right="-10"/>
-	<button label="" label_selected="" name="server_lagmeter" tool_tip="Status de atraso no servidor"/>
-	<text name="server">
-		Servidor
-	</text>
-	<text font="SansSerifSmall" name="server_text">
-		Normal
-	</text>
-	<text left="30" name="server_lag_cause" right="-32"/>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Alternar o tamanho da janela"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ru/floater_lagmeter.xml b/indra/newview/skins/default/xui/ru/floater_lagmeter.xml
deleted file mode 100644
index c420006a03..0000000000
--- a/indra/newview/skins/default/xui/ru/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="УРОВЕНЬ ЛАГОВ">
-	<floater.string name="max_title_msg">
-		Уровень лагов
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Лаг
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		Клиент
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Нормально, окно в фоне
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		Частота кадров клиента ниже [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		Частота кадров клиента от [CLIENT_FRAME_RATE_CRITICAL] до [CLIENT_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Нормально
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Возможная причина: дальность отрисовки слишком велика
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Возможная причина: загрузка изображений
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Возможная причина: слишком много изображений в памяти
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Возможная причина: слишком много сложных объектов в сцене
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Сеть
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Сеть теряет более [NETWORK_PACKET_LOSS_CRITICAL]% пакетов
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Сеть теряет [NETWORK_PACKET_LOSS_WARNING]–[NETWORK_PACKET_LOSS_CRITICAL]% пакетов
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Нормально
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Пинг соединения более [NETWORK_PING_CRITICAL] мс
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Пинг соединения [NETWORK_PING_WARNING]–[NETWORK_PING_CRITICAL] мс
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Возможно, плохое соединение, или параметр «Ширина канала» слишком велик.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Возможно, плохое соединение или есть работающие файлообменные программы.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Сервер
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Частота кадров сервера ниже [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Частота кадров сервера [SERVER_FRAME_RATE_CRITICAL]–[SERVER_FRAME_RATE_WARNING]
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Нормально
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Возможная причина: слишком много физических объектов
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Возможная причина: слишком много скриптовых объектов
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Возможная причина: слишком большой сетевой трафик
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Возможная причина: слишком много людей в регионе
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Возможная причина: слишком много изображений
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Возможная причина: сервер сильно загружен
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="Уровень лагов клиента"/>
-	<text name="client">
-		Клиент
-	</text>
-	<text name="client_text">
-		Нормально
-	</text>
-	<button name="network_lagmeter" tool_tip="Уровень лагов сети"/>
-	<text name="network">
-		Сеть
-	</text>
-	<text name="network_text">
-		Нормально
-	</text>
-	<button name="server_lagmeter" tool_tip="Уровень лагов сервера"/>
-	<text name="server">
-		Сервер
-	</text>
-	<text name="server_text">
-		Нормально
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Переключение размера"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/tr/floater_lagmeter.xml b/indra/newview/skins/default/xui/tr/floater_lagmeter.xml
deleted file mode 100644
index 736c50be90..0000000000
--- a/indra/newview/skins/default/xui/tr/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="GECİKME ÖLÇER">
-	<floater.string name="max_title_msg">
-		Gecikme Ölçer
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		Gecikme
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		İstemci
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		Normal, pencere alt zeminde
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		İstemci kare hızı [CLIENT_FRAME_RATE_CRITICAL] altında
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		İstemci kare hızı [CLIENT_FRAME_RATE_CRITICAL] ile [CLIENT_FRAME_RATE_WARNING] arasınad
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		Muhtemel neden: Çizme mesafesi çok yüksek
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		Muhtemel neden: Görüntüler yükleniyor
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		Muhtemel neden: Bellekte çok fazla görüntü
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		Muhtemel neden: Sahnede çok fazla karmaşık nesne
-	</floater.string>
-	<floater.string name="network_text_msg">
-		Ağ
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		Bağlantı paketlerin % [NETWORK_PACKET_LOSS_CRITICAL]&apos;sinden fazlasını bırakıyor
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		Bağlantı paketlerin % [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]&apos;sini bırakıyor
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		Bağlantı ping süresi [NETWORK_PING_CRITICAL] ms.den fazla
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		Bağlantı ping süresi [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] ms
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		Muhtemel yetersiz bağlantı veya &apos;Bant Genişliği&apos; tercihi çok yüksek.
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		Muhtemel yetersiz bağlantı veya dosya paylaşım uygulaması.
-	</floater.string>
-	<floater.string name="server_text_msg">
-		Sunucu
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		Simülatör kare hızı [SERVER_FRAME_RATE_CRITICAL] altında
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		Simülatör kare hızı [SERVER_FRAME_RATE_CRITICAL] ve [SERVER_FRAME_RATE_WARNING] arasında
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		Normal
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		Muhtemel Neden: Çok fazla fiziki nesne
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		Muhtemel Neden: Çok fazla komut dosyalı nesne
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		Muhtemel Neden: Çok fazla ağ trafiği
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		Muhtemel Neden: Bölgede hareket eden çok fazla insan var
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		Muhtemel Neden: Çok fazla görüntü hesabı
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		Muhtemel Neden: Simülatör yükü çok ağır
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="İstemci gecikme durumu"/>
-	<text name="client">
-		İstemci
-	</text>
-	<text name="client_text">
-		Normal
-	</text>
-	<button name="network_lagmeter" tool_tip="Ağ gecikme durumu"/>
-	<text name="network">
-		Ağ
-	</text>
-	<text name="network_text">
-		Normal
-	</text>
-	<button name="server_lagmeter" tool_tip="Sunucu gecikme durumu"/>
-	<text name="server">
-		Sunucu
-	</text>
-	<text name="server_text">
-		Normal
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="Gezdirici büyüklüğünü değiştir"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/zh/floater_lagmeter.xml b/indra/newview/skins/default/xui/zh/floater_lagmeter.xml
deleted file mode 100644
index e9a082288a..0000000000
--- a/indra/newview/skins/default/xui/zh/floater_lagmeter.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="floater_lagmeter" title="LAG 測量器">
-	<floater.string name="max_title_msg">
-		Lag 測量器
-	</floater.string>
-	<floater.string name="max_width_px">
-		360
-	</floater.string>
-	<floater.string name="min_title_msg">
-		延遲
-	</floater.string>
-	<floater.string name="min_width_px">
-		90
-	</floater.string>
-	<floater.string name="client_text_msg">
-		客戶端
-	</floater.string>
-	<floater.string name="client_frame_rate_critical_fps">
-		10
-	</floater.string>
-	<floater.string name="client_frame_rate_warning_fps">
-		15
-	</floater.string>
-	<floater.string name="client_frame_time_window_bg_msg">
-		正常，視窗位於背景
-	</floater.string>
-	<floater.string name="client_frame_time_critical_msg">
-		客戶端幀率低於 [CLIENT_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="client_frame_time_warning_msg">
-		客戶端幀率介於 [CLIENT_FRAME_RATE_CRITICAL] 和 [CLIENT_FRAME_RATE_WARNING] 之間
-	</floater.string>
-	<floater.string name="client_frame_time_normal_msg">
-		正常
-	</floater.string>
-	<floater.string name="client_draw_distance_cause_msg">
-		可能原因：可視距離設得太遠
-	</floater.string>
-	<floater.string name="client_texture_loading_cause_msg">
-		可能原因：正在載入圖像
-	</floater.string>
-	<floater.string name="client_texture_memory_cause_msg">
-		可能原因：記憶體裡圖像太多
-	</floater.string>
-	<floater.string name="client_complex_objects_cause_msg">
-		可能原因：場景內複雜物件太多
-	</floater.string>
-	<floater.string name="network_text_msg">
-		網路
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_pct">
-		10
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_pct">
-		5
-	</floater.string>
-	<floater.string name="network_packet_loss_critical_msg">
-		這次連通丟失了至少 [NETWORK_PACKET_LOSS_CRITICAL]% 的封包
-	</floater.string>
-	<floater.string name="network_packet_loss_warning_msg">
-		這次連通丟失了 [NETWORK_PACKET_LOSS_WARNING]%-[NETWORK_PACKET_LOSS_CRITICAL]% 的封包
-	</floater.string>
-	<floater.string name="network_performance_normal_msg">
-		正常
-	</floater.string>
-	<floater.string name="network_ping_critical_ms">
-		600
-	</floater.string>
-	<floater.string name="network_ping_warning_ms">
-		300
-	</floater.string>
-	<floater.string name="network_ping_critical_msg">
-		探測連通回應時間超過 [NETWORK_PING_CRITICAL] 毫秒
-	</floater.string>
-	<floater.string name="network_ping_warning_msg">
-		探測連通回應時間為 [NETWORK_PING_WARNING]-[NETWORK_PING_CRITICAL] 毫秒
-	</floater.string>
-	<floater.string name="network_packet_loss_cause_msg">
-		可能連通不良，或所設的偏好連通頻寬過高。
-	</floater.string>
-	<floater.string name="network_ping_cause_msg">
-		可能連通不良，或使用檔案分享應用程式。
-	</floater.string>
-	<floater.string name="server_text_msg">
-		伺服器
-	</floater.string>
-	<floater.string name="server_frame_rate_critical_fps">
-		20
-	</floater.string>
-	<floater.string name="server_frame_rate_warning_fps">
-		30
-	</floater.string>
-	<floater.string name="server_single_process_max_time_ms">
-		20
-	</floater.string>
-	<floater.string name="server_frame_time_critical_msg">
-		模擬器 framerate 低於 [SERVER_FRAME_RATE_CRITICAL]
-	</floater.string>
-	<floater.string name="server_frame_time_warning_msg">
-		模擬器 framerate 介於 [SERVER_FRAME_RATE_CRITICAL] 與 [SERVER_FRAME_RATE_WARNING]　之間
-	</floater.string>
-	<floater.string name="server_frame_time_normal_msg">
-		正常
-	</floater.string>
-	<floater.string name="server_physics_cause_msg">
-		可能原因：太多物理物件
-	</floater.string>
-	<floater.string name="server_scripts_cause_msg">
-		可能原因：太多腳本物件
-	</floater.string>
-	<floater.string name="server_net_cause_msg">
-		可能原因：太多網路流量
-	</floater.string>
-	<floater.string name="server_agent_cause_msg">
-		可能原因：地區有太多移動的人
-	</floater.string>
-	<floater.string name="server_images_cause_msg">
-		可能原因：太多圖像計算
-	</floater.string>
-	<floater.string name="server_generic_cause_msg">
-		可能原因：模擬器負載過重
-	</floater.string>
-	<floater.string name="smaller_label">
-		&gt;&gt;
-	</floater.string>
-	<floater.string name="bigger_label">
-		&lt;&lt;
-	</floater.string>
-	<button name="client_lagmeter" tool_tip="客戶端 lag 狀態"/>
-	<text name="client">
-		客戶端
-	</text>
-	<text name="client_text">
-		正常
-	</text>
-	<button name="network_lagmeter" tool_tip="網路 lag 狀態"/>
-	<text name="network">
-		網路
-	</text>
-	<text name="network_text">
-		正常
-	</text>
-	<button name="server_lagmeter" tool_tip="伺服器 lag 狀態"/>
-	<text name="server">
-		伺服器
-	</text>
-	<text name="server_text">
-		正常
-	</text>
-	<button label="&gt;&gt;" name="minimize" tool_tip="切換浮動視窗尺寸"/>
-</floater>
diff --git a/indra/newview/tests/llviewerassetstats_test.cpp b/indra/newview/tests/llviewerassetstats_test.cpp
index f8923b9868..ecdd78a1da 100644
--- a/indra/newview/tests/llviewerassetstats_test.cpp
+++ b/indra/newview/tests/llviewerassetstats_test.cpp
@@ -37,6 +37,11 @@
 #include "llregionhandle.h"
 #include "../llvoavatar.h"
 
+namespace LLStatViewer
+{
+	LLTrace::Measurement<>		FPS_SAMPLE("fpssample");
+}
+
 void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts)
 {
 	counts.resize(3);
@@ -220,7 +225,18 @@ get_region(const LLSD & sd, U64 region_handle1)
 namespace tut
 {
 	struct tst_viewerassetstats_index
-	{};
+	{
+		tst_viewerassetstats_index()
+		{
+			LLTrace::init();
+		}
+
+		~tst_viewerassetstats_index()
+		{
+			LLTrace::cleanup();
+		}
+
+	};
 	typedef test_group<tst_viewerassetstats_index> tst_viewerassetstats_index_t;
 	typedef tst_viewerassetstats_index_t::object tst_viewerassetstats_index_object_t;
 	tut::tst_viewerassetstats_index_t tut_tst_viewerassetstats_index("tst_viewerassetstats_test");
@@ -230,24 +246,24 @@ namespace tut
 	void tst_viewerassetstats_index_object_t::test<1>()
 	{
 		// Check that helpers aren't bothered by missing global stats
-		ensure("Global gViewerAssetStatsMain should be NULL", (NULL == gViewerAssetStatsMain));
+		ensure("Global gViewerAssetStats should be NULL", (NULL == gViewerAssetStats));
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_response_main(LLViewerAssetType::AT_GESTURE, false, false, 12300000ULL);
+		LLViewerAssetStatsFF::record_response(LLViewerAssetType::AT_GESTURE, false, false, 12300000ULL);
 	}
 
 	// Create a non-global instance and check the structure
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<2>()
 	{
-		ensure("Global gViewerAssetStatsMain should be NULL", (NULL == gViewerAssetStatsMain));
+		ensure("Global gViewerAssetStats should be NULL", (NULL == gViewerAssetStats));
 
 		LLViewerAssetStats * it = new LLViewerAssetStats();
 
-		ensure("Global gViewerAssetStatsMain should still be NULL", (NULL == gViewerAssetStatsMain));
+		ensure("Global gViewerAssetStats should still be NULL", (NULL == gViewerAssetStats));
 
 		LLSD sd_full = it->asLLSD(false);
 
@@ -314,16 +330,17 @@ namespace tut
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<4>()
 	{
-		gViewerAssetStatsMain = new LLViewerAssetStats();
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		gViewerAssetStats = new LLViewerAssetStats();
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLSD sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->updateStats();
+		LLSD sd = gViewerAssetStats->asLLSD(false);
 		ensure("Correct single-key LLSD map root", is_triple_key_map(sd, "regions", "duration", "avatar"));
 		ensure("Correct single-slot LLSD array regions", is_single_slot_array(sd["regions"], region1_handle));
 		sd = sd["regions"][0];
@@ -337,11 +354,11 @@ namespace tut
 
 		// Reset and check zeros...
 		// Reset leaves current region in place
-		gViewerAssetStatsMain->reset();
-		sd = gViewerAssetStatsMain->asLLSD(false)["regions"][region1_handle_str];
+		gViewerAssetStats->reset();
+		sd = gViewerAssetStats->asLLSD(false)["regions"][region1_handle_str];
 		
-		delete gViewerAssetStatsMain;
-		gViewerAssetStatsMain = NULL;
+		delete gViewerAssetStats;
+		gViewerAssetStats = NULL;
 
 		ensure("sd[get_texture_non_temp_udp][enqueued] is reset", (0 == sd["get_texture_non_temp_udp"]["enqueued"].asInteger()));
 		ensure("sd[get_gesture_udp][dequeued] is reset", (0 == sd["get_gesture_udp"]["dequeued"].asInteger()));
@@ -351,19 +368,17 @@ namespace tut
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<5>()
 	{
-		gViewerAssetStatsThread1 = new LLViewerAssetStats();
-		gViewerAssetStatsMain = new LLViewerAssetStats();
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		gViewerAssetStats = new LLViewerAssetStats();
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLSD sd = gViewerAssetStatsThread1->asLLSD(false);
-		ensure("Other collector is empty", is_no_stats_map(sd));
-		sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->updateStats();
+		LLSD sd = gViewerAssetStats->asLLSD(false);
 		ensure("Correct single-key LLSD map root", is_triple_key_map(sd, "regions", "duration", "avatar"));
 		ensure("Correct single-slot LLSD array regions", is_single_slot_array(sd["regions"], region1_handle));
 		sd = sd["regions"][0];
@@ -377,13 +392,11 @@ namespace tut
 
 		// Reset and check zeros...
 		// Reset leaves current region in place
-		gViewerAssetStatsMain->reset();
-		sd = gViewerAssetStatsMain->asLLSD(false)["regions"][0];
+		gViewerAssetStats->reset();
+		sd = gViewerAssetStats->asLLSD(false)["regions"][0];
 		
-		delete gViewerAssetStatsMain;
-		gViewerAssetStatsMain = NULL;
-		delete gViewerAssetStatsThread1;
-		gViewerAssetStatsThread1 = NULL;
+		delete gViewerAssetStats;
+		gViewerAssetStats = NULL;
 
 		ensure("sd[get_texture_non_temp_udp][enqueued] is reset", (0 == sd["get_texture_non_temp_udp"]["enqueued"].asInteger()));
 		ensure("sd[get_gesture_udp][dequeued] is reset", (0 == sd["get_gesture_udp"]["dequeued"].asInteger()));
@@ -393,24 +406,25 @@ namespace tut
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<6>()
 	{
-		gViewerAssetStatsMain = new LLViewerAssetStats();
+		gViewerAssetStats = new LLViewerAssetStats();
 
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLViewerAssetStatsFF::set_region_main(region2_handle);
+		LLViewerAssetStatsFF::set_region(region2_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
 
-		LLSD sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->updateStats();
+		LLSD sd = gViewerAssetStats->asLLSD(false);
 
 		// std::cout << sd << std::endl;
 		
@@ -435,14 +449,14 @@ namespace tut
 
 		// Reset and check zeros...
 		// Reset leaves current region in place
-		gViewerAssetStatsMain->reset();
-		sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->reset();
+		sd = gViewerAssetStats->asLLSD(false);
 		ensure("Correct single-key LLSD map root", is_triple_key_map(sd, "regions", "duration", "avatar"));
 		ensure("Correct single-slot LLSD array regions (p2)", is_single_slot_array(sd["regions"], region2_handle));
 		sd2 = sd["regions"][0];
 		
-		delete gViewerAssetStatsMain;
-		gViewerAssetStatsMain = NULL;
+		delete gViewerAssetStats;
+		gViewerAssetStats = NULL;
 
 		ensure("sd2[get_texture_non_temp_udp][enqueued] is reset", (0 == sd2["get_texture_non_temp_udp"]["enqueued"].asInteger()));
 		ensure("sd2[get_gesture_udp][enqueued] is reset", (0 == sd2["get_gesture_udp"]["enqueued"].asInteger()));
@@ -452,39 +466,40 @@ namespace tut
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<7>()
 	{
-		gViewerAssetStatsMain = new LLViewerAssetStats();
+		gViewerAssetStats = new LLViewerAssetStats();
 
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLViewerAssetStatsFF::set_region_main(region2_handle);
+		LLViewerAssetStatsFF::set_region(region2_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
 
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, true, true);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, true, true);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, true, true);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, true, true);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLViewerAssetStatsFF::set_region_main(region2_handle);
+		LLViewerAssetStatsFF::set_region(region2_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_GESTURE, false, false);
 
-		LLSD sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->updateStats();
+		LLSD sd = gViewerAssetStats->asLLSD(false);
 
 		ensure("Correct double-key LLSD map root", is_triple_key_map(sd, "duration", "regions", "avatar"));
 		ensure("Correct double-slot LLSD array regions", is_double_slot_array(sd["regions"], region1_handle, region2_handle));
@@ -507,15 +522,15 @@ namespace tut
 
 		// Reset and check zeros...
 		// Reset leaves current region in place
-		gViewerAssetStatsMain->reset();
-		sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->reset();
+		sd = gViewerAssetStats->asLLSD(false);
 		ensure("Correct single-key LLSD map root", is_triple_key_map(sd, "duration", "regions", "avatar"));
 		ensure("Correct single-slot LLSD array regions (p2)", is_single_slot_array(sd["regions"], region2_handle));
 		sd2 = get_region(sd, region2_handle);
 		ensure("Region2 is present in results", sd2.isMap());
 		
-		delete gViewerAssetStatsMain;
-		gViewerAssetStatsMain = NULL;
+		delete gViewerAssetStats;
+		gViewerAssetStats = NULL;
 
 		ensure_equals("sd2[get_texture_non_temp_udp][enqueued] is reset", sd2["get_texture_non_temp_udp"]["enqueued"].asInteger(), 0);
 		ensure_equals("sd2[get_gesture_udp][enqueued] is reset", sd2["get_gesture_udp"]["enqueued"].asInteger(), 0);
@@ -525,36 +540,34 @@ namespace tut
 	template<> template<>
 	void tst_viewerassetstats_index_object_t::test<8>()
 	{
-		gViewerAssetStatsThread1 = new LLViewerAssetStats();
-		gViewerAssetStatsMain = new LLViewerAssetStats();
-		LLViewerAssetStatsFF::set_region_main(region1_handle);
+		gViewerAssetStats = new LLViewerAssetStats();
+		LLViewerAssetStatsFF::set_region(region1_handle);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_TEXTURE, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_TEXTURE, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_TEXTURE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, false, true);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, false, true);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, false, true);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, false, true);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, true, false);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, true, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, true, false);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, true, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_BODYPART, true, true);
-		LLViewerAssetStatsFF::record_dequeue_main(LLViewerAssetType::AT_BODYPART, true, true);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_BODYPART, true, true);
+		LLViewerAssetStatsFF::record_dequeue(LLViewerAssetType::AT_BODYPART, true, true);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_LSL_BYTECODE, false, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_LSL_BYTECODE, false, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_LSL_BYTECODE, false, true);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_LSL_BYTECODE, false, true);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_LSL_BYTECODE, true, false);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_LSL_BYTECODE, true, false);
 
-		LLViewerAssetStatsFF::record_enqueue_main(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
+		LLViewerAssetStatsFF::record_enqueue(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
 
-		LLSD sd = gViewerAssetStatsThread1->asLLSD(false);
-		ensure("Other collector is empty", is_no_stats_map(sd));
-		sd = gViewerAssetStatsMain->asLLSD(false);
+		gViewerAssetStats->updateStats();
+		LLSD sd = gViewerAssetStats->asLLSD(false);
 		ensure("Correct single-key LLSD map root", is_triple_key_map(sd, "regions", "duration", "avatar"));
 		ensure("Correct single-slot LLSD array regions", is_single_slot_array(sd["regions"], region1_handle));
 		sd = get_region(sd, region1_handle);
@@ -572,445 +585,14 @@ namespace tut
 
 		// Reset and check zeros...
 		// Reset leaves current region in place
-		gViewerAssetStatsMain->reset();
-		sd = get_region(gViewerAssetStatsMain->asLLSD(false), region1_handle);
+		gViewerAssetStats->reset();
+		sd = get_region(gViewerAssetStats->asLLSD(false), region1_handle);
 		ensure("Region1 is present in results", sd.isMap());
 		
-		delete gViewerAssetStatsMain;
-		gViewerAssetStatsMain = NULL;
-		delete gViewerAssetStatsThread1;
-		gViewerAssetStatsThread1 = NULL;
+		delete gViewerAssetStats;
+		gViewerAssetStats = NULL;
 
 		ensure_equals("sd[get_texture_non_temp_udp][enqueued] is reset", sd["get_texture_non_temp_udp"]["enqueued"].asInteger(), 0);
 		ensure_equals("sd[get_gesture_udp][dequeued] is reset", sd["get_gesture_udp"]["dequeued"].asInteger(), 0);
 	}
-
-
-	// LLViewerAssetStats::merge() basic functions work
-	template<> template<>
-	void tst_viewerassetstats_index_object_t::test<9>()
-	{
-		LLViewerAssetStats s1;
-		LLViewerAssetStats s2;
-
-		s1.setRegion(region1_handle);
-		s2.setRegion(region1_handle);
-
-		s1.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 5000000);
-		s1.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 6000000);
-		s1.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 8000000);
-		s1.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 7000000);
-		s1.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 9000000);
-		
-		s2.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 2000000);
-		s2.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 3000000);
-		s2.recordGetServiced(LLViewerAssetType::AT_TEXTURE, true, true, 4000000);
-
-		s2.merge(s1);
-
-		LLSD s2_llsd = get_region(s2.asLLSD(false), region1_handle);
-		ensure("Region1 is present in results", s2_llsd.isMap());
-		
-		ensure_equals("count after merge", s2_llsd["get_texture_temp_http"]["resp_count"].asInteger(), 8);
-		ensure_approximately_equals("min after merge", s2_llsd["get_texture_temp_http"]["resp_min"].asReal(), 2.0, 22);
-		ensure_approximately_equals("max after merge", s2_llsd["get_texture_temp_http"]["resp_max"].asReal(), 9.0, 22);
-		ensure_approximately_equals("max after merge", s2_llsd["get_texture_temp_http"]["resp_mean"].asReal(), 5.5, 22);
-	}
-
-	// LLViewerAssetStats::merge() basic functions work without corrupting source data
-	template<> template<>
-	void tst_viewerassetstats_index_object_t::test<10>()
-	{
-		LLViewerAssetStats s1;
-		LLViewerAssetStats s2;
-
-		s1.setRegion(region1_handle);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 23289200);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 282900);
-
-		
-		s2.setRegion(region2_handle);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 6500000);
-		s2.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 10000);
-
-		{
-			s2.merge(s1);
-			
-			LLSD src = s1.asLLSD(false);
-			LLSD dst = s2.asLLSD(false);
-
-			ensure_equals("merge src has single region", src["regions"].size(), 1);
-			ensure_equals("merge dst has dual regions", dst["regions"].size(), 2);
-			
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-			dst["regions"][1].erase("duration");
-
-			LLSD s1_llsd = get_region(src, region1_handle);
-			ensure("Region1 is present in src", s1_llsd.isMap());
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-
-			ensure("result from src is in dst", llsd_equals(s1_llsd, s2_llsd));
-		}
-
-		s1.setRegion(region1_handle);
-		s2.setRegion(region1_handle);
-		s1.reset();
-		s2.reset();
-		
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 23289200);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 282900);
-
-		
-		s2.setRegion(region1_handle);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 6500000);
-		s2.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 10000);
-
-		{
-			s2.merge(s1);
-			
-			LLSD src = s1.asLLSD(false);
-			LLSD dst = s2.asLLSD(false);
-
-			ensure_equals("merge src has single region (p2)", src["regions"].size(), 1);
-			ensure_equals("merge dst has single region (p2)", dst["regions"].size(), 1);
-
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-			
-			LLSD s1_llsd = get_region(src, region1_handle);
-			ensure("Region1 is present in src", s1_llsd.isMap());
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-
-			ensure_equals("src counts okay (enq)", s1_llsd["get_other"]["enqueued"].asInteger(), 4);
-			ensure_equals("src counts okay (deq)", s1_llsd["get_other"]["dequeued"].asInteger(), 4);
-			ensure_equals("src resp counts okay", s1_llsd["get_other"]["resp_count"].asInteger(), 2);
-			ensure_approximately_equals("src respmin okay", s1_llsd["get_other"]["resp_min"].asReal(), 0.2829, 20);
-			ensure_approximately_equals("src respmax okay", s1_llsd["get_other"]["resp_max"].asReal(), 23.2892, 20);
-			
-			ensure_equals("dst counts okay (enq)", s2_llsd["get_other"]["enqueued"].asInteger(), 12);
-			ensure_equals("src counts okay (deq)", s2_llsd["get_other"]["dequeued"].asInteger(), 11);
-			ensure_equals("dst resp counts okay", s2_llsd["get_other"]["resp_count"].asInteger(), 4);
-			ensure_approximately_equals("dst respmin okay", s2_llsd["get_other"]["resp_min"].asReal(), 0.010, 20);
-			ensure_approximately_equals("dst respmax okay", s2_llsd["get_other"]["resp_max"].asReal(), 23.2892, 20);
-		}
-	}
-
-
-    // Maximum merges are interesting when one side contributes nothing
-	template<> template<>
-	void tst_viewerassetstats_index_object_t::test<11>()
-	{
-		LLViewerAssetStats s1;
-		LLViewerAssetStats s2;
-
-		s1.setRegion(region1_handle);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		// Want to test negative numbers here but have to work in U64
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-
-		s2.setRegion(region1_handle);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		{
-			s2.merge(s1);
-			
-			LLSD src = s1.asLLSD(false);
-			LLSD dst = s2.asLLSD(false);
-
-			ensure_equals("merge src has single region", src["regions"].size(), 1);
-			ensure_equals("merge dst has single region", dst["regions"].size(), 1);
-			
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-			
-			ensure_equals("dst counts come from src only", s2_llsd["get_other"]["resp_count"].asInteger(), 3);
-
-			ensure_approximately_equals("dst maximum with count 0 does not contribute to merged maximum",
-										s2_llsd["get_other"]["resp_max"].asReal(), F64(0.0), 20);
-		}
-
-		// Other way around
-		s1.setRegion(region1_handle);
-		s2.setRegion(region1_handle);
-		s1.reset();
-		s2.reset();
-
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		// Want to test negative numbers here but have to work in U64
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 0);
-
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		{
-			s1.merge(s2);
-			
-			LLSD src = s2.asLLSD(false);
-			LLSD dst = s1.asLLSD(false);
-
-			ensure_equals("merge src has single region", src["regions"].size(), 1);
-			ensure_equals("merge dst has single region", dst["regions"].size(), 1);
-			
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-
-			ensure_equals("dst counts come from src only (flipped)", s2_llsd["get_other"]["resp_count"].asInteger(), 3);
-
-			ensure_approximately_equals("dst maximum with count 0 does not contribute to merged maximum (flipped)",
-										s2_llsd["get_other"]["resp_max"].asReal(), F64(0.0), 20);
-		}
-	}
-
-    // Minimum merges are interesting when one side contributes nothing
-	template<> template<>
-	void tst_viewerassetstats_index_object_t::test<12>()
-	{
-		LLViewerAssetStats s1;
-		LLViewerAssetStats s2;
-
-		s1.setRegion(region1_handle);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 3800000);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 2700000);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 2900000);
-
-		s2.setRegion(region1_handle);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		{
-			s2.merge(s1);
-			
-			LLSD src = s1.asLLSD(false);
-			LLSD dst = s2.asLLSD(false);
-
-			ensure_equals("merge src has single region", src["regions"].size(), 1);
-			ensure_equals("merge dst has single region", dst["regions"].size(), 1);
-			
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-
-			ensure_equals("dst counts come from src only", s2_llsd["get_other"]["resp_count"].asInteger(), 3);
-
-			ensure_approximately_equals("dst minimum with count 0 does not contribute to merged minimum",
-										s2_llsd["get_other"]["resp_min"].asReal(), F64(2.7), 20);
-		}
-
-		// Other way around
-		s1.setRegion(region1_handle);
-		s2.setRegion(region1_handle);
-		s1.reset();
-		s2.reset();
-
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s1.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 3800000);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 2700000);
-		s1.recordGetServiced(LLViewerAssetType::AT_LSL_BYTECODE, true, true, 2900000);
-
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetEnqueued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-		s2.recordGetDequeued(LLViewerAssetType::AT_LSL_BYTECODE, true, true);
-
-		{
-			s1.merge(s2);
-			
-			LLSD src = s2.asLLSD(false);
-			LLSD dst = s1.asLLSD(false);
-
-			ensure_equals("merge src has single region", src["regions"].size(), 1);
-			ensure_equals("merge dst has single region", dst["regions"].size(), 1);
-			
-			// Remove time stamps, they're a problem
-			src.erase("duration");
-			src["regions"][0].erase("duration");
-			dst.erase("duration");
-			dst["regions"][0].erase("duration");
-
-			LLSD s2_llsd = get_region(dst, region1_handle);
-			ensure("Region1 is present in dst", s2_llsd.isMap());
-
-			ensure_equals("dst counts come from src only (flipped)", s2_llsd["get_other"]["resp_count"].asInteger(), 3);
-
-			ensure_approximately_equals("dst minimum with count 0 does not contribute to merged minimum (flipped)",
-										s2_llsd["get_other"]["resp_min"].asReal(), F64(2.7), 20);
-		}
-	}
-
 }
diff --git a/indra/test/io.cpp b/indra/test/io.cpp
index ce747f667d..b3eabc2e8a 100644
--- a/indra/test/io.cpp
+++ b/indra/test/io.cpp
@@ -44,6 +44,7 @@
 #include "llsdrpcclient.h"
 #include "llsdrpcserver.h"
 #include "llsdserialize.h"
+#include "llcommon.h"
 #include "lluuid.h"
 #include "llinstantmessage.h"
 
@@ -1187,7 +1188,9 @@ namespace tut
 				mResponsePtr(response)
 			{
 			}
-			~LLSimpleRPCResponse() {}
+			~LLSimpleRPCResponse() 
+			{
+			}
 			virtual bool response(LLPumpIO* pump)
 			{
 				*mResponsePtr = mReturnValue;
diff --git a/indra/test/llhttpdate_tut.cpp b/indra/test/llhttpdate_tut.cpp
index 46684bb9dc..ecf734ee90 100644
--- a/indra/test/llhttpdate_tut.cpp
+++ b/indra/test/llhttpdate_tut.cpp
@@ -29,6 +29,7 @@
 #include "lltut.h"
 
 #include "lldate.h"
+#include "llcommon.h"
 #include "llframetimer.h"
 
 #include <time.h>
@@ -38,6 +39,12 @@ namespace tut
 {
     struct httpdate_data
     {
+		httpdate_data() 
+		{ 
+		}
+		~httpdate_data() 
+		{ 
+		}
         LLDate some_date;
     };
     typedef test_group<httpdate_data> httpdate_test;
diff --git a/indra/test/lliohttpserver_tut.cpp b/indra/test/lliohttpserver_tut.cpp
index 2fdc455f45..3fa5c8dd42 100644
--- a/indra/test/lliohttpserver_tut.cpp
+++ b/indra/test/lliohttpserver_tut.cpp
@@ -31,6 +31,7 @@
 #include "lliohttpserver.h"
 #include "llsdhttpserver.h"
 #include "llsdserialize.h"
+#include "llcommon.h"
 
 #include "llpipeutil.h"
 
@@ -81,6 +82,10 @@ namespace tut
 			mRoot.addNode("/delayed/echo", new DelayedEcho(this));
 			mRoot.addNode("/wire/hello", new LLHTTPNodeForPipe<WireHello>);
 		}
+
+		~HTTPServiceTestData()
+		{
+		}
 		
 		LLHTTPNode mRoot;
 		LLHTTPNode::ResponsePtr mResponse;
diff --git a/indra/test/test.cpp b/indra/test/test.cpp
index dc8580fe69..28de88201c 100644
--- a/indra/test/test.cpp
+++ b/indra/test/test.cpp
@@ -40,6 +40,7 @@
 #include "tests/wrapllerrs.h"             // RecorderProxy
 #include "stringize.h"
 #include "namedtempfile.h"
+#include "lltrace.h"
 
 #include "apr_pools.h"
 #include "apr_getopt.h"
@@ -512,15 +513,11 @@ int main(int argc, char **argv)
 	ctype_workaround();
 #endif
 
-	apr_initialize();
-	apr_pool_t* pool = NULL;
-	if(APR_SUCCESS != apr_pool_create(&pool, NULL))
-	{
-		std::cerr << "Unable to initialize pool" << std::endl;
-		return 1;
-	}
+	ll_init_apr();
+	
+	LLTrace::init();
 	apr_getopt_t* os = NULL;
-	if(APR_SUCCESS != apr_getopt_init(&os, pool, argc, argv))
+	if(APR_SUCCESS != apr_getopt_init(&os, gAPRPoolp, argc, argv))
 	{
 		std::cerr << "apr_getopt_init() failed" << std::endl;
 		return 1;
@@ -602,7 +599,7 @@ int main(int argc, char **argv)
 	if (LOGFAIL)
 	{
 		LLError::ELevel level = LLError::decodeLevel(LOGFAIL);
-		replayer.reset(new LLReplayLogReal(level, pool));
+		replayer.reset(new LLReplayLogReal(level, gAPRPoolp));
 	}
 	else
 	{
@@ -646,7 +643,7 @@ int main(int argc, char **argv)
 		s.close();
 	}
 
-	apr_terminate();
+	ll_cleanup_apr();
 
 	int retval = (success ? 0 : 1);
 	return retval;
diff --git a/indra/test_apps/llplugintest/llmediaplugintest.cpp b/indra/test_apps/llplugintest/llmediaplugintest.cpp
index 884b00f0cc..fa4f5abd28 100644
--- a/indra/test_apps/llplugintest/llmediaplugintest.cpp
+++ b/indra/test_apps/llplugintest/llmediaplugintest.cpp
@@ -37,6 +37,12 @@
 
 #include "llmediaplugintest.h"
 
+
+#if LL_WINDOWS
+#pragma warning(disable: 4263)
+#pragma warning(disable: 4264)
+#endif
+
 #if __APPLE__
 	#include <GLUT/glut.h>
 	#include <CoreFoundation/CoreFoundation.h>
@@ -46,10 +52,6 @@
 	#define GLUI_FREEGLUT
 #endif
 
-#if LL_WINDOWS
-#pragma warning(disable: 4263)
-#pragma warning(disable: 4264)
-#endif
 #include "glui.h"