Merge from don_linden/viewer-dev

7 files changed, 493 insertions, 32 deletions

diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 2dd32b7aa4..1e84eb2cb9 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -526,6 +526,7 @@ set(viewer_SOURCE_FILES
     llviewerregion.cpp
     llviewershadermgr.cpp
     llviewerstats.cpp
+    llviewerstatsrecorder.cpp
     llviewertexteditor.cpp
     llviewertexture.cpp
     llviewertextureanim.cpp
@@ -1056,6 +1057,7 @@ set(viewer_HEADER_FILES
     llviewerregion.h
     llviewershadermgr.h
     llviewerstats.h
+    llviewerstatsrecorder.h
     llviewertexteditor.h
     llviewertexture.h
     llviewertextureanim.h
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index b460885a53..984e1c20db 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -44,6 +44,7 @@
 #include "llagentwearables.h"
 #include "llwindow.h"
 #include "llviewerstats.h"
+#include "llviewerstatsrecorder.h"
 #include "llmd5.h"
 #include "llpumpio.h"
 #include "llmimetypes.h"
@@ -651,6 +652,10 @@ bool LLAppViewer::init()
 
     mAlloc.setProfilingEnabled(gSavedSettings.getBOOL("MemProfiling"));
 
+#if LL_RECORD_VIEWER_STATS
+	LLViewerStatsRecorder::initClass();
+#endif
+
     // *NOTE:Mani - LLCurl::initClass is not thread safe. 
     // Called before threads are created.
     LLCurl::initClass();
@@ -959,6 +964,8 @@ bool LLAppViewer::init()
 
 	LLAgentLanguage::init();
 
+
+
 	return true;
 }
 
@@ -1679,6 +1686,10 @@ bool LLAppViewer::cleanup()
 	}
 	LLMetricPerformanceTesterBasic::cleanClass() ;
 
+#if LL_RECORD_VIEWER_STATS
+	LLViewerStatsRecorder::cleanupClass();
+#endif
+
 	llinfos << "Cleaning up Media and Textures" << llendflush;
 
 	//Note:
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index f5a32438cf..70631f9481 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -56,6 +56,7 @@
 #include "llresmgr.h"
 #include "llviewerregion.h"
 #include "llviewerstats.h"
+#include "llviewerstatsrecorder.h"
 #include "llvoavatarself.h"
 #include "lltoolmgr.h"
 #include "lltoolpie.h"
@@ -302,8 +303,10 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 	// have to transform to absolute coordinates.
 	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)
 	{
+		llinfos << "TEST: !cached && !compressed && update_type != OUT_FULL" << llendl;
 		gTerseObjectUpdates += num_objects;
 		S32 size;
 		if (mesgsys->getReceiveCompressedSize())
@@ -314,7 +317,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 		{
 			size = mesgsys->getReceiveSize();
 		}
-		// llinfos << "Received terse " << num_objects << " in " << size << " byte (" << size/num_objects << ")" << llendl;
+		llinfos << "Received terse " << num_objects << " in " << size << " byte (" << size/num_objects << ")" << llendl;
 	}
 	else
 	{
@@ -345,9 +348,14 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 	U8 compressed_dpbuffer[2048];
 	LLDataPackerBinaryBuffer compressed_dp(compressed_dpbuffer, 2048);
 	LLDataPacker *cached_dpp = NULL;
-	
+
+#if LL_RECORD_VIEWER_STATS
+	LLViewerStatsRecorder::instance()->beginObjectUpdateEvents(regionp);
+#endif
+
 	for (i = 0; i < num_objects; i++)
 	{
+		// timer is unused?
 		LLTimer update_timer;
 		BOOL justCreated = FALSE;
 
@@ -359,9 +367,11 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_CRC, crc, i);
 		
 			// Lookup data packer and add this id to cache miss lists if necessary.
-			cached_dpp = regionp->getDP(id, crc);
+			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");
@@ -369,6 +379,11 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			}
 			else
 			{
+				// Cache Miss.
+				#if LL_RECORD_VIEWER_STATS
+				LLViewerStatsRecorder::instance()->recordCacheMissEvent(id, update_type, cache_miss_type);
+				#endif
+
 				continue; // no data packer, skip this object
 			}
 		}
@@ -380,13 +395,15 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			compressed_dp.reset();
 
 			U32 flags = 0;
-			if (update_type != OUT_TERSE_IMPROVED)
+			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
 			{
 				mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_UpdateFlags, flags, i);
 			}
 			
+			// I don't think we ever use this flag from the server.  DK 2010/12/09
 			if (flags & FLAGS_ZLIB_COMPRESSED)
 			{
+				llinfos << "TEST: flags & FLAGS_ZLIB_COMPRESSED" << llendl;
 				compressed_length = mesgsys->getSizeFast(_PREHASH_ObjectData, i, _PREHASH_Data);
 				mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_Data, compbuffer, 0, i);
 				uncompressed_length = 2048;
@@ -402,7 +419,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			}
 
 
-			if (update_type != OUT_TERSE_IMPROVED)
+			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
 			{
 				compressed_dp.unpackUUID(fullid, "ID");
 				compressed_dp.unpackU32(local_id, "LocalID");
@@ -422,7 +439,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 				}
 			}
 		}
-		else if (update_type != OUT_FULL)
+		else if (update_type != OUT_FULL) // !compressed, !OUT_FULL ==> OUT_FULL_CACHED only?
 		{
 			mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_ID, local_id, i);
 			getUUIDFromLocal(fullid,
@@ -435,7 +452,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 				mNumUnknownUpdates++;
 			}
 		}
-		else
+		else // OUT_FULL only?
 		{
 			mesgsys->getUUIDFast(_PREHASH_ObjectData, _PREHASH_FullID, fullid, i);
 			mesgsys->getU32Fast(_PREHASH_ObjectData, _PREHASH_ID, local_id, i);
@@ -467,12 +484,12 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 							gMessageSystem->getSenderPort());
 			
 			if (objectp->mLocalID != local_id)
-			{    // Update local ID in object with the one sent from the region
+			{	// Update local ID in object with the one sent from the region
 				objectp->mLocalID = local_id;
 			}
 			
 			if (objectp->getRegion() != regionp)
-			{    // Object changed region, so update it
+			{	// Object changed region, so update it
 				objectp->updateRegion(regionp); // for LLVOAvatar
 			}
 		}
@@ -483,18 +500,24 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			{
 				if (update_type == OUT_TERSE_IMPROVED)
 				{
-					// llinfos << "terse update for an unknown object:" << fullid << llendl;
+					llinfos << "terse update for an unknown object (compressed):" << fullid << llendl;
+					#if LL_RECORD_VIEWER_STATS
+					LLViewerStatsRecorder::instance()->recordObjectUpdateFailure(local_id, update_type);
+					#endif
 					continue;
 				}
 			}
-			else if (cached)
+			else if (cached) // Cache hit only?
 			{
 			}
 			else
 			{
 				if (update_type != OUT_FULL)
 				{
-					// llinfos << "terse update for an unknown object:" << fullid << llendl;
+					llinfos << "terse update for an unknown object:" << fullid << llendl;
+					#if LL_RECORD_VIEWER_STATS
+					LLViewerStatsRecorder::instance()->recordObjectUpdateFailure(local_id, update_type);
+					#endif
 					continue;
 				}
 
@@ -504,7 +527,10 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			if (mDeadObjects.find(fullid) != mDeadObjects.end())
 			{
 				mNumDeadObjectUpdates++;
-				// llinfos << "update for a dead object:" << fullid << llendl;
+				llinfos << "update for a dead object:" << fullid << llendl;
+				#if LL_RECORD_VIEWER_STATS
+				LLViewerStatsRecorder::instance()->recordObjectUpdateFailure(local_id, update_type);
+				#endif
 				continue;
 			}
 #endif
@@ -512,6 +538,10 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			objectp = createObject(pcode, regionp, fullid, local_id, gMessageSystem->getSender());
 			if (!objectp)
 			{
+				llinfos << "createObject failure for object: " << fullid << llendl;
+				#if LL_RECORD_VIEWER_STATS
+				LLViewerStatsRecorder::instance()->recordObjectUpdateFailure(local_id, update_type);
+				#endif
 				continue;
 			}
 			justCreated = TRUE;
@@ -524,19 +554,24 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			llwarns << "Dead object " << objectp->mID << " in UUID map 1!" << llendl;
 		}
 
+		bool bCached = false;
 		if (compressed)
 		{
-			if (update_type != OUT_TERSE_IMPROVED)
+			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
 			{
 				objectp->mLocalID = local_id;
 			}
 			processUpdateCore(objectp, user_data, i, update_type, &compressed_dp, justCreated);
-			if (update_type != OUT_TERSE_IMPROVED)
+			if (update_type != OUT_TERSE_IMPROVED) // OUT_FULL_COMPRESSED only?
 			{
-				objectp->mRegionp->cacheFullUpdate(objectp, compressed_dp);
+				LLViewerRegion::eCacheUpdateResult result = objectp->mRegionp->cacheFullUpdate(objectp, compressed_dp);
+				bCached = true;
+				#if LL_RECORD_VIEWER_STATS
+				LLViewerStatsRecorder::instance()->recordCacheFullUpdate(local_id, update_type, result, objectp);
+				#endif
 			}
 		}
-		else if (cached)
+		else if (cached) // Cache hit only?
 		{
 			objectp->mLocalID = local_id;
 			processUpdateCore(objectp, user_data, i, update_type, cached_dpp, justCreated);
@@ -549,8 +584,45 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 			}
 			processUpdateCore(objectp, user_data, i, update_type, NULL, justCreated);
 		}
+		#if LL_RECORD_VIEWER_STATS
+		LLViewerStatsRecorder::instance()->recordObjectUpdateEvent(local_id, update_type, objectp);
+		F32 color_strength = llmin(((LLViewerStatsRecorder::instance()->getTimeSinceStart() / 1000.0f) + 128.0f) / 255.0f, 1.0f);
+		LLColor4 color;
+		switch (update_type)
+		{
+		case OUT_FULL:
+			color[VGREEN] = color_strength;
+			break;
+		case OUT_TERSE_IMPROVED:
+			color[VGREEN] = color_strength;
+			color[VBLUE] = color_strength;
+			break;
+		case OUT_FULL_COMPRESSED:
+			color[VRED] = color_strength;
+			if (!bCached)
+			{
+				color[VGREEN] = color_strength;
+			}
+			break;
+		case OUT_FULL_CACHED:
+			color[VBLUE] = color_strength;
+			break;
+		default:
+			llwarns << "Unknown update_type " << update_type << llendl;
+			break;
+		};
+		U8 te;
+		for (te = 0; te < objectp->getNumTEs(); ++te)
+		{
+			objectp->setTEColor(te, color);
+		}
+		#endif
 	}
 
+#if LL_RECORD_VIEWER_STATS
+	LLViewerStatsRecorder::instance()->endObjectUpdateEvents();
+#endif
+
 	LLVOAvatar::cullAvatarsByPixelArea();
 }
 
@@ -681,12 +753,12 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 
 	// update global timer
 	F32 last_time = gFrameTimeSeconds;
-	U64 time = totalTime();                 // this will become the new gFrameTime when the update is done
+	U64 time = totalTime();				 // this will become the new gFrameTime when the update is done
 	// Time _can_ go backwards, for example if the user changes the system clock.
 	// It doesn't cause any fatal problems (just some oddness with stats), so we shouldn't assert here.
 //	llassert(time > gFrameTime);
 	F64 time_diff = U64_to_F64(time - gFrameTime)/(F64)SEC_TO_MICROSEC;
-	gFrameTime    = time;
+	gFrameTime	= time;
 	F64 time_since_start = U64_to_F64(gFrameTime - gStartTime)/(F64)SEC_TO_MICROSEC;
 	gFrameTimeSeconds = (F32)time_since_start;
 
@@ -788,7 +860,7 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 		{
 			std::string id_str;
 			objectp->mID.toString(id_str);
-			std::string tmpstr = std::string("Par:    ") + id_str;
+			std::string tmpstr = std::string("Par:	") + id_str;
 			addDebugBeacon(objectp->getPositionAgent(),
 							tmpstr,
 							LLColor4(1.f,0.f,0.f,1.f),
@@ -808,12 +880,12 @@ void LLViewerObjectList::update(LLAgent &agent, LLWorld &world)
 			std::string tmpstr;
 			if (objectp->getParent())
 			{
-				tmpstr = std::string("ChP:    ") + id_str;
+				tmpstr = std::string("ChP:	") + id_str;
 				text_color = LLColor4(0.f, 1.f, 0.f, 1.f);
 			}
 			else
 			{
-				tmpstr = std::string("ChNoP:    ") + id_str;
+				tmpstr = std::string("ChNoP:	") + id_str;
 				text_color = LLColor4(1.f, 0.f, 0.f, 1.f);
 			}
 			id = sIndexAndLocalIDToUUID[oi.mParentInfo];
@@ -1519,8 +1591,8 @@ void LLViewerObjectList::findOrphans(LLViewerObject* objectp, U32 ip, U32 port)
 			llinfos << "Agent: " << objectp->getPositionAgent() << llendl;
 			addDebugBeacon(objectp->getPositionAgent(),"");
 #endif
-            gPipeline.markMoved(objectp->mDrawable);                
-            objectp->setChanged(LLXform::MOVED | LLXform::SILHOUETTE);
+			gPipeline.markMoved(objectp->mDrawable);				
+			objectp->setChanged(LLXform::MOVED | LLXform::SILHOUETTE);
 
 			// Flag the object as no longer orphaned
 			childp->mOrphaned = FALSE;
diff --git a/indra/newview/llviewerregion.cpp b/indra/newview/llviewerregion.cpp
index ca07e7c4cf..ea6f1ab342 100644
--- a/indra/newview/llviewerregion.cpp
+++ b/indra/newview/llviewerregion.cpp
@@ -59,6 +59,7 @@
 #include "llurldispatcher.h"
 #include "llviewerobjectlist.h"
 #include "llviewerparceloverlay.h"
+#include "llviewerstatsrecorder.h"
 #include "llvlmanager.h"
 #include "llvlcomposition.h"
 #include "llvocache.h"
@@ -1032,7 +1033,7 @@ void LLViewerRegion::getInfo(LLSD& info)
 	info["Region"]["Handle"]["y"] = (LLSD::Integer)y;
 }
 
-void LLViewerRegion::cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp)
+LLViewerRegion::eCacheUpdateResult LLViewerRegion::cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp)
 {
 	U32 local_id = objectp->getLocalID();
 	U32 crc = objectp->getCRC();
@@ -1046,6 +1047,7 @@ void LLViewerRegion::cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinary
 		{
 			// Record a hit
 			entry->recordDupe();
+			return CACHE_UPDATE_DUPE;
 		}
 		else
 		{
@@ -1054,6 +1056,7 @@ void LLViewerRegion::cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinary
 			delete entry;
 			entry = new LLVOCacheEntry(local_id, crc, dp);
 			mCacheMap[local_id] = entry;
+			return CACHE_UPDATE_CHANGED;
 		}
 	}
 	else
@@ -1061,20 +1064,23 @@ void LLViewerRegion::cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinary
 		// we haven't seen this object before
 
 		// Create new entry and add to map
+		eCacheUpdateResult result = CACHE_UPDATE_ADDED;
 		if (mCacheMap.size() > MAX_OBJECT_CACHE_ENTRIES)
 		{
 			mCacheMap.erase(mCacheMap.begin());
+			result = CACHE_UPDATE_REPLACED;
+			
 		}
 		entry = new LLVOCacheEntry(local_id, crc, dp);
 
 		mCacheMap[local_id] = entry;
+		return result;
 	}
-	return ;
 }
 
 // Get data packer for this object, if we have cached data
 // AND the CRC matches. JC
-LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc)
+LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc, U8 &cache_miss_type)
 {
 	llassert(mCacheLoaded);
 
@@ -1087,17 +1093,20 @@ LLDataPacker *LLViewerRegion::getDP(U32 local_id, U32 crc)
 		{
 			// Record a hit
 			entry->recordHit();
+			cache_miss_type = CACHE_MISS_TYPE_NONE;
 			return entry->getDP(crc);
 		}
 		else
 		{
 			// llinfos << "CRC miss for " << local_id << llendl;
+			cache_miss_type = CACHE_MISS_TYPE_CRC;
 			mCacheMissCRC.put(local_id);
 		}
 	}
 	else
 	{
 		// llinfos << "Cache miss for " << local_id << llendl;
+		cache_miss_type = CACHE_MISS_TYPE_FULL;
 		mCacheMissFull.put(local_id);
 	}
 	return NULL;
@@ -1119,9 +1128,6 @@ void LLViewerRegion::requestCacheMisses()
 	S32 blocks = 0;
 	S32 i;
 
-	const U8 CACHE_MISS_TYPE_FULL = 0;
-	const U8 CACHE_MISS_TYPE_CRC  = 1;
-
 	// Send full cache miss updates.  For these, we KNOW we don't
 	// have a viewer object.
 	for (i = 0; i < full_count; i++)
@@ -1184,6 +1190,11 @@ void LLViewerRegion::requestCacheMisses()
 
 	mCacheDirty = TRUE ;
 	// llinfos << "KILLDEBUG Sent cache miss full " << full_count << " crc " << crc_count << llendl;
+	#if LL_RECORD_VIEWER_STATS
+	LLViewerStatsRecorder::instance()->beginObjectUpdateEvents(this);
+	LLViewerStatsRecorder::instance()->recordRequestCacheMissesEvent(full_count + crc_count);
+	LLViewerStatsRecorder::instance()->endObjectUpdateEvents();
+	#endif
 }
 
 void LLViewerRegion::dumpCache()
diff --git a/indra/newview/llviewerregion.h b/indra/newview/llviewerregion.h
index 8b71998f60..5e17f3352d 100644
--- a/indra/newview/llviewerregion.h
+++ b/indra/newview/llviewerregion.h
@@ -274,9 +274,24 @@ public:
 
 	void getInfo(LLSD& info);
 
+	typedef enum
+	{
+		CACHE_MISS_TYPE_FULL = 0,
+		CACHE_MISS_TYPE_CRC,
+		CACHE_MISS_TYPE_NONE
+	} eCacheMissType;
+
+	typedef enum
+	{
+		CACHE_UPDATE_DUPE = 0,
+		CACHE_UPDATE_CHANGED,
+		CACHE_UPDATE_ADDED,
+		CACHE_UPDATE_REPLACED
+	} eCacheUpdateResult;
+
 	// handle a full update message
-	void cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp);
-	LLDataPacker *getDP(U32 local_id, U32 crc);
+	eCacheUpdateResult cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp);
+	LLDataPacker *getDP(U32 local_id, U32 crc, U8 &cache_miss_type);
 	void requestCacheMisses();
 	void addCacheMissFull(const U32 local_id);
 
diff --git a/indra/newview/llviewerstatsrecorder.cpp b/indra/newview/llviewerstatsrecorder.cpp
new file mode 100644
index 0000000000..a8d1565742
--- /dev/null
+++ b/indra/newview/llviewerstatsrecorder.cpp
@@ -0,0 +1,253 @@
+/**
+ * @file llviewerstatsrecorder.cpp
+ * @brief record info about viewer events to a metrics log file
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * 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 "llviewerstatsrecorder.h"
+#include "llfile.h"
+#include "llviewerregion.h"
+#include "llviewerobject.h"
+
+
+// To do - something using region name or global position
+#if LL_WINDOWS
+	static const std::string STATS_FILE_NAME("C:\\ViewerObjectCacheStats.csv");
+#else
+	static const std::string STATS_FILE_NAME("/tmp/viewerstats.csv");
+#endif
+
+
+LLViewerStatsRecorder* LLViewerStatsRecorder::sInstance = NULL;
+LLViewerStatsRecorder::LLViewerStatsRecorder() :
+	mObjectCacheFile(NULL),
+	mTimer(),
+	mRegionp(NULL),
+	mStartTime(0.f),
+	mProcessingTime(0.f)
+{
+	if (NULL != sInstance)
+	{
+		llerrs << "Attempted to create multiple instances of LLViewerStatsRecorder!" << llendl;
+	}
+	sInstance = this;
+	clearStats();
+}
+
+LLViewerStatsRecorder::~LLViewerStatsRecorder()
+{
+	if (mObjectCacheFile != NULL)
+	{
+		LLFile::close(mObjectCacheFile);
+		mObjectCacheFile = NULL;
+	}
+}
+
+// static
+void LLViewerStatsRecorder::initClass()
+{
+	sInstance = new LLViewerStatsRecorder();
+}
+
+// static
+void LLViewerStatsRecorder::cleanupClass()
+{
+	delete sInstance;
+	sInstance = NULL;
+}
+
+
+void LLViewerStatsRecorder::initStatsRecorder(LLViewerRegion *regionp)
+{
+	if (mObjectCacheFile == NULL)
+	{
+		mStartTime = LLTimer::getTotalTime();
+		mObjectCacheFile = LLFile::fopen(STATS_FILE_NAME, "wb");
+		if (mObjectCacheFile)
+		{	// Write column headers
+			std::ostringstream data_msg;
+			data_msg << "EventTime, "
+				<< "ProcessingTime, "
+				<< "CacheHits, "
+				<< "CacheFullMisses, "
+				<< "CacheCrcMisses, "
+				<< "FullUpdates, "
+				<< "TerseUpdates, "
+				<< "CacheMissRequests, "
+				<< "CacheMissResponses, "
+				<< "CacheUpdateDupes, "
+				<< "CacheUpdateChanges, "
+				<< "CacheUpdateAdds, "
+				<< "CacheUpdateReplacements, "
+				<< "UpdateFailures"
+				<< "\n";
+
+			fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile );
+		}
+	}
+}
+
+void LLViewerStatsRecorder::beginObjectUpdateEvents(LLViewerRegion *regionp)
+{
+	initStatsRecorder(regionp);
+	mRegionp = regionp;
+	mProcessingTime = LLTimer::getTotalTime();
+	clearStats();
+}
+
+void LLViewerStatsRecorder::clearStats()
+{
+	mObjectCacheHitCount = 0;
+	mObjectCacheMissFullCount = 0;
+	mObjectCacheMissCrcCount = 0;
+	mObjectFullUpdates = 0;
+	mObjectTerseUpdates = 0;
+	mObjectCacheMissRequests = 0;
+	mObjectCacheMissResponses = 0;
+	mObjectCacheUpdateDupes = 0;
+	mObjectCacheUpdateChanges = 0;
+	mObjectCacheUpdateAdds = 0;
+	mObjectCacheUpdateReplacements = 0;
+	mObjectUpdateFailures = 0;
+}
+
+
+void LLViewerStatsRecorder::recordObjectUpdateFailure(U32 local_id, const EObjectUpdateType update_type)
+{
+	mObjectUpdateFailures++;
+}
+
+void LLViewerStatsRecorder::recordCacheMissEvent(U32 local_id, const EObjectUpdateType update_type, U8 cache_miss_type)
+{
+	if (LLViewerRegion::CACHE_MISS_TYPE_FULL == cache_miss_type)
+	{
+		mObjectCacheMissFullCount++;
+	}
+	else
+	{
+		mObjectCacheMissCrcCount++;
+	}
+}
+
+void LLViewerStatsRecorder::recordObjectUpdateEvent(U32 local_id, const EObjectUpdateType update_type, LLViewerObject * objectp)
+{
+	switch (update_type)
+	{
+	case OUT_FULL:
+		mObjectFullUpdates++;
+		break;
+	case OUT_TERSE_IMPROVED:
+		mObjectTerseUpdates++;
+		break;
+	case OUT_FULL_COMPRESSED:
+		mObjectCacheMissResponses++;
+		break;
+	case OUT_FULL_CACHED:
+		mObjectCacheHitCount++;
+		break;
+	default:
+		llwarns << "Unknown update_type" << llendl;
+		break;
+	};
+}
+
+void LLViewerStatsRecorder::recordCacheFullUpdate(U32 local_id, const EObjectUpdateType update_type, LLViewerRegion::eCacheUpdateResult update_result, LLViewerObject* objectp)
+{
+	switch (update_result)
+	{
+		case LLViewerRegion::CACHE_UPDATE_DUPE:
+			mObjectCacheUpdateDupes++;
+			break;
+		case LLViewerRegion::CACHE_UPDATE_CHANGED:
+			mObjectCacheUpdateChanges++;
+			break;
+		case LLViewerRegion::CACHE_UPDATE_ADDED:
+			mObjectCacheUpdateAdds++;
+			break;
+		case LLViewerRegion::CACHE_UPDATE_REPLACED:
+			mObjectCacheUpdateReplacements++;
+			break;
+		default:
+			llwarns << "Unknown update_result type" << llendl;
+			break;
+	};
+}
+
+void LLViewerStatsRecorder::recordRequestCacheMissesEvent(S32 count)
+{
+	mObjectCacheMissRequests += count;
+}
+
+void LLViewerStatsRecorder::endObjectUpdateEvents()
+{
+	llinfos << "ILX: " 
+		<< mObjectCacheHitCount << " hits, " 
+		<< mObjectCacheMissFullCount << " full misses, "
+		<< mObjectCacheMissCrcCount << " crc misses, "
+		<< mObjectFullUpdates << " full updates, "
+		<< mObjectTerseUpdates << " terse updates, "
+		<< mObjectCacheMissRequests << " cache miss requests, "
+		<< mObjectCacheMissResponses << " cache miss responses, "
+		<< mObjectCacheUpdateDupes << " cache update dupes, "
+		<< mObjectCacheUpdateChanges << " cache update changes, "
+		<< mObjectCacheUpdateAdds << " cache update adds, "
+		<< mObjectCacheUpdateReplacements << " cache update replacements, "
+		<< mObjectUpdateFailures << " update failures"
+		<< llendl;
+
+	S32 total_objects = mObjectCacheHitCount + mObjectCacheMissCrcCount + mObjectCacheMissFullCount + mObjectFullUpdates + mObjectTerseUpdates + mObjectCacheMissRequests + mObjectCacheMissResponses + mObjectCacheUpdateDupes + mObjectCacheUpdateChanges + mObjectCacheUpdateAdds + mObjectCacheUpdateReplacements + mObjectUpdateFailures;
+	if (mObjectCacheFile != NULL &&
+		total_objects > 0)
+	{
+		std::ostringstream data_msg;
+		F32 processing32 = (F32) ((LLTimer::getTotalTime() - mProcessingTime) / 1000.0);
+
+		data_msg << getTimeSinceStart()
+			<< ", " << processing32
+			<< ", " << mObjectCacheHitCount
+			<< ", " << mObjectCacheMissFullCount
+			<< ", " << mObjectCacheMissCrcCount
+			<< ", " << mObjectFullUpdates
+			<< ", " << mObjectTerseUpdates
+			<< ", " << mObjectCacheMissRequests
+			<< ", " << mObjectCacheMissResponses
+			<< ", " << mObjectCacheUpdateDupes
+			<< ", " << mObjectCacheUpdateChanges
+			<< ", " << mObjectCacheUpdateAdds
+			<< ", " << mObjectCacheUpdateReplacements
+			<< ", " << mObjectUpdateFailures
+			<< "\n";
+
+		fwrite(data_msg.str().c_str(), 1, data_msg.str().size(), mObjectCacheFile );
+	}
+
+	clearStats();
+}
+
+F32 LLViewerStatsRecorder::getTimeSinceStart()
+{
+	return (F32) ((LLTimer::getTotalTime() - mStartTime) / 1000.0);
+}
+
+
diff --git a/indra/newview/llviewerstatsrecorder.h b/indra/newview/llviewerstatsrecorder.h
new file mode 100644
index 0000000000..f9ccdd6e78
--- /dev/null
+++ b/indra/newview/llviewerstatsrecorder.h
@@ -0,0 +1,97 @@
+/**
+ * @file llviewerstatsrecorder.h
+ * @brief record info about viewer events to a metrics log file
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * 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 LLVIEWERSTATSRECORDER_H
+#define LLVIEWERSTATSRECORDER_H
+
+
+// This is a diagnostic class used to record information from the viewer
+// for analysis.
+
+// This is normally 0.  Set to 1 to enable viewer stats recording
+#define LL_RECORD_VIEWER_STATS	1
+
+
+#if LL_RECORD_VIEWER_STATS
+#include "llframetimer.h"
+#include "llviewerobject.h"
+#include "llviewerregion.h"
+
+class LLMutex;
+class LLViewerRegion;
+class LLViewerObject;
+
+class LLViewerStatsRecorder
+{
+ public:
+	LLViewerStatsRecorder();
+	~LLViewerStatsRecorder();
+
+	static void initClass();
+	static void cleanupClass();
+	static LLViewerStatsRecorder* instance() {return sInstance; }
+
+	void initStatsRecorder(LLViewerRegion *regionp);
+
+	void beginObjectUpdateEvents(LLViewerRegion *regionp);
+	void recordObjectUpdateFailure(U32 local_id, const EObjectUpdateType update_type);
+	void recordCacheMissEvent(U32 local_id, const EObjectUpdateType update_type, U8 cache_miss_type);
+	void recordObjectUpdateEvent(U32 local_id, const EObjectUpdateType update_type, LLViewerObject * objectp);
+	void recordCacheFullUpdate(U32 local_id, const EObjectUpdateType update_type, LLViewerRegion::eCacheUpdateResult update_result, LLViewerObject* objectp);
+	void recordRequestCacheMissesEvent(S32 count);
+	void endObjectUpdateEvents();
+
+	F32 getTimeSinceStart();
+
+private:
+	static LLViewerStatsRecorder* sInstance;
+
+	LLFILE *	mObjectCacheFile;		// File to write data into
+	LLFrameTimer	mTimer;
+	LLViewerRegion*	mRegionp;
+	F64			mStartTime;
+	F64			mProcessingTime;
+
+	S32			mObjectCacheHitCount;
+	S32			mObjectCacheMissFullCount;
+	S32			mObjectCacheMissCrcCount;
+	S32			mObjectFullUpdates;
+	S32			mObjectTerseUpdates;
+	S32			mObjectCacheMissRequests;
+	S32			mObjectCacheMissResponses;
+	S32			mObjectCacheUpdateDupes;
+	S32			mObjectCacheUpdateChanges;
+	S32			mObjectCacheUpdateAdds;
+	S32			mObjectCacheUpdateReplacements;
+	S32			mObjectUpdateFailures;
+
+
+	void	clearStats();
+};
+#endif	// LL_RECORD_VIEWER_STATS
+
+#endif // LLVIEWERSTATSRECORDER_H
+