diff options
author | Kyle Ambroff <ambroff@lindenlab.com> | 2010-11-15 14:14:00 -0800 |
---|---|---|
committer | Kyle Ambroff <ambroff@lindenlab.com> | 2010-11-15 14:14:00 -0800 |
commit | ed9af1151fea725574ddedafd75a9ecfb5927082 (patch) | |
tree | 6fb865d740e84865b439d224043a5de7151765c8 /indra/newview/llviewertexture.cpp | |
parent | 0dbf75ab657446b51e6e9795ddccc16bb9f6fd02 (diff) | |
parent | a9eb639511a09dc072e67e10d8885a0b4f7587da (diff) |
Merge with lindenlab/viewer-development
Diffstat (limited to 'indra/newview/llviewertexture.cpp')
-rw-r--r-- | indra/newview/llviewertexture.cpp | 246 |
1 files changed, 135 insertions, 111 deletions
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp index 5c262838ae..6160510c0e 100644 --- a/indra/newview/llviewertexture.cpp +++ b/indra/newview/llviewertexture.cpp @@ -72,6 +72,7 @@ LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sDefaultImagep = NULL; LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sSmokeImagep = NULL; LLViewerMediaTexture::media_map_t LLViewerMediaTexture::sMediaMap ; LLTexturePipelineTester* LLViewerTextureManager::sTesterp = NULL ; +const std::string sTesterName("TextureTester"); S32 LLViewerTexture::sImageCount = 0; S32 LLViewerTexture::sRawCount = 0; @@ -341,9 +342,14 @@ void LLViewerTextureManager::init() LLViewerTexture::initClass() ; - if(LLFastTimer::sMetricLog) + if (LLMetricPerformanceTesterBasic::isMetricLogRequested(sTesterName) && !LLMetricPerformanceTesterBasic::getTester(sTesterName)) { - LLViewerTextureManager::sTesterp = new LLTexturePipelineTester() ; + sTesterp = new LLTexturePipelineTester() ; + if (!sTesterp->isValid()) + { + delete sTesterp; + sTesterp = NULL; + } } } @@ -408,9 +414,10 @@ void LLViewerTexture::updateClass(const F32 velocity, const F32 angular_velocity { sCurrentTime = gFrameTimeSeconds ; - if(LLViewerTextureManager::sTesterp) + LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName); + if (tester) { - LLViewerTextureManager::sTesterp->update() ; + tester->update() ; } LLViewerMediaTexture::updateClass() ; @@ -603,9 +610,10 @@ bool LLViewerTexture::bindDefaultImage(S32 stage) //check if there is cached raw image and switch to it if possible switchToCachedImage() ; - if(LLViewerTextureManager::sTesterp) + LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName); + if (tester) { - LLViewerTextureManager::sTesterp->updateGrayTextureBinding() ; + tester->updateGrayTextureBinding() ; } return res; } @@ -1066,9 +1074,10 @@ BOOL LLViewerTexture::isLargeImage() //virtual void LLViewerTexture::updateBindStatsForTester() { - if(LLViewerTextureManager::sTesterp) + LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName); + if (tester) { - LLViewerTextureManager::sTesterp->updateTextureBindingStats(this) ; + tester->updateTextureBindingStats(this) ; } } @@ -1130,7 +1139,7 @@ void LLViewerFetchedTexture::init(bool firstinit) // does not contain this image. mIsMissingAsset = FALSE; - mLoadedCallbackDesiredDiscardLevel = 0; + mLoadedCallbackDesiredDiscardLevel = S8_MAX; mPauseLoadedCallBacks = TRUE ; mNeedsCreateTexture = FALSE; @@ -1155,9 +1164,11 @@ void LLViewerFetchedTexture::init(bool firstinit) mSavedRawImage = NULL ; mForceToSaveRawImage = FALSE ; + mSaveRawImage = FALSE ; mSavedRawDiscardLevel = -1 ; mDesiredSavedRawDiscardLevel = -1 ; mLastReferencedSavedRawImageTime = 0.0f ; + mLastCallBackActiveTime = 0.f; } LLViewerFetchedTexture::~LLViewerFetchedTexture() @@ -1483,56 +1494,57 @@ void LLViewerFetchedTexture::setKnownDrawSize(S32 width, S32 height) //virtual void LLViewerFetchedTexture::processTextureStats() { + static LLCachedControl<bool> textures_fullres(gSavedSettings,"TextureLoadFullRes"); + if(mFullyLoaded) - { - if(mDesiredDiscardLevel > mMinDesiredDiscardLevel)//need to load more + { + if(needsToSaveRawImage())//needs to reload { - mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, mMinDesiredDiscardLevel) ; mFullyLoaded = FALSE ; } - } - else - { - updateVirtualSize() ; - - static LLCachedControl<bool> textures_fullres(gSavedSettings,"TextureLoadFullRes"); - - if (textures_fullres) + else { - mDesiredDiscardLevel = 0; + return ; } - else if(!mFullWidth || !mFullHeight) + } + + //updateVirtualSize() ; + + if (textures_fullres) + { + mDesiredDiscardLevel = 0; + } + else if(!mFullWidth || !mFullHeight) + { + mDesiredDiscardLevel = llmin(getMaxDiscardLevel(), (S32)mLoadedCallbackDesiredDiscardLevel) ; + } + else + { + if(!mKnownDrawWidth || !mKnownDrawHeight || mFullWidth <= mKnownDrawWidth || mFullHeight <= mKnownDrawHeight) { - mDesiredDiscardLevel = getMaxDiscardLevel() ; - } - else - { - if(!mKnownDrawWidth || !mKnownDrawHeight || mFullWidth <= mKnownDrawWidth || mFullHeight <= mKnownDrawHeight) + if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT) { - if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT) - { - mDesiredDiscardLevel = 1; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048 - } - else - { - mDesiredDiscardLevel = 0; - } - } - else if(mKnownDrawSizeChanged)//known draw size is set - { - mDesiredDiscardLevel = (S8)llmin(log((F32)mFullWidth / mKnownDrawWidth) / log_2, - log((F32)mFullHeight / mKnownDrawHeight) / log_2) ; - mDesiredDiscardLevel = llclamp(mDesiredDiscardLevel, (S8)0, (S8)getMaxDiscardLevel()) ; - mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, mMinDesiredDiscardLevel) ; + mDesiredDiscardLevel = 1; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048 } - mKnownDrawSizeChanged = FALSE ; - - if(getDiscardLevel() >= 0 && (getDiscardLevel() <= mDesiredDiscardLevel)) + else { - mFullyLoaded = TRUE ; + mDesiredDiscardLevel = 0; } } - } + else if(mKnownDrawSizeChanged)//known draw size is set + { + mDesiredDiscardLevel = (S8)llmin(log((F32)mFullWidth / mKnownDrawWidth) / log_2, + log((F32)mFullHeight / mKnownDrawHeight) / log_2) ; + mDesiredDiscardLevel = llclamp(mDesiredDiscardLevel, (S8)0, (S8)getMaxDiscardLevel()) ; + mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, mMinDesiredDiscardLevel) ; + } + mKnownDrawSizeChanged = FALSE ; + + if(getDiscardLevel() >= 0 && (getDiscardLevel() <= mDesiredDiscardLevel)) + { + mFullyLoaded = TRUE ; + } + } if(mForceToSaveRawImage && mDesiredSavedRawDiscardLevel >= 0) //force to refetch the texture. { @@ -1846,10 +1858,11 @@ bool LLViewerFetchedTexture::updateFetch() // We may have data ready regardless of whether or not we are finished (e.g. waiting on write) if (mRawImage.notNull()) { - if(LLViewerTextureManager::sTesterp) + LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName); + if (tester) { mIsFetched = TRUE ; - LLViewerTextureManager::sTesterp->updateTextureLoadingStats(this, mRawImage, LLAppViewer::getTextureFetch()->isFromLocalCache(mID)) ; + tester->updateTextureLoadingStats(this, mRawImage, LLAppViewer::getTextureFetch()->isFromLocalCache(mID)) ; } mRawDiscardLevel = fetch_discard; if ((mRawImage->getDataSize() > 0 && mRawDiscardLevel >= 0) && @@ -2074,13 +2087,14 @@ void LLViewerFetchedTexture::setLoadedCallback( loaded_callback_func loaded_call mNeedsAux |= needs_aux; if(keep_imageraw) { - forceToSaveRawImage(discard_level, true) ; + mSaveRawImage = TRUE ; } if (mNeedsAux && mAuxRawImage.isNull() && getDiscardLevel() >= 0) { // We need aux data, but we've already loaded the image, and it didn't have any llwarns << "No aux data available for callback for image:" << getID() << llendl; } + mLastCallBackActiveTime = sCurrentTime ; } void LLViewerFetchedTexture::clearCallbackEntryList() @@ -2103,9 +2117,8 @@ void LLViewerFetchedTexture::clearCallbackEntryList() } gTextureList.mCallbackList.erase(this); - mMinDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1; mLoadedCallbackDesiredDiscardLevel = S8_MAX ; - if(mForceToSaveRawImage) + if(needsToSaveRawImage()) { destroySavedRawImage() ; } @@ -2151,14 +2164,13 @@ void LLViewerFetchedTexture::deleteCallbackEntry(const LLLoadedCallbackEntry::so { // If we have no callbacks, take us off of the image callback list. gTextureList.mCallbackList.erase(this); - mMinDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1; - - if(mForceToSaveRawImage) + + if(needsToSaveRawImage()) { destroySavedRawImage() ; } } - else if(mForceToSaveRawImage && mBoostLevel != LLViewerTexture::BOOST_PREVIEW) + else if(needsToSaveRawImage() && mBoostLevel != LLViewerTexture::BOOST_PREVIEW) { if(desired_raw_discard != INVALID_DISCARD_LEVEL) { @@ -2196,7 +2208,7 @@ void LLViewerFetchedTexture::unpauseLoadedCallbacks(const LLLoadedCallbackEntry: mPauseLoadedCallBacks = FALSE ; if(need_raw) { - mForceToSaveRawImage = TRUE ; + mSaveRawImage = TRUE ; } } @@ -2227,16 +2239,23 @@ void LLViewerFetchedTexture::pauseLoadedCallbacks(const LLLoadedCallbackEntry::s { mPauseLoadedCallBacks = TRUE ;//when set, loaded callback is paused. resetTextureStats(); - mForceToSaveRawImage = FALSE ; + mSaveRawImage = FALSE ; } } bool LLViewerFetchedTexture::doLoadedCallbacks() { + static const F32 MAX_INACTIVE_TIME = 120.f ; //seconds + if (mNeedsCreateTexture) { return false; } + if(sCurrentTime - mLastCallBackActiveTime > MAX_INACTIVE_TIME) + { + clearCallbackEntryList() ; //remove all callbacks. + return false ; + } bool res = false; @@ -2302,13 +2321,11 @@ bool LLViewerFetchedTexture::doLoadedCallbacks() bool run_raw_callbacks = false; bool need_readback = false; - mMinDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1; for(callback_list_t::iterator iter = mLoadedCallbackList.begin(); iter != mLoadedCallbackList.end(); ) { LLLoadedCallbackEntry *entryp = *iter++; - mMinDesiredDiscardLevel = llmin(mMinDesiredDiscardLevel, (S8)entryp->mDesiredDiscard) ; - + if (entryp->mNeedsImageRaw) { if (mNeedsAux) @@ -2382,7 +2399,8 @@ bool LLViewerFetchedTexture::doLoadedCallbacks() // to satisfy the interested party, then this is the last time that // we're going to call them. - llassert_always(mRawImage.notNull()); + mLastCallBackActiveTime = sCurrentTime ; + //llassert_always(mRawImage.notNull()); if(mNeedsAux && mAuxRawImage.isNull()) { llwarns << "Raw Image with no Aux Data for callback" << llendl; @@ -2417,6 +2435,7 @@ bool LLViewerFetchedTexture::doLoadedCallbacks() LLLoadedCallbackEntry *entryp = *curiter; if (!entryp->mNeedsImageRaw && (entryp->mLastUsedDiscard > gl_discard)) { + mLastCallBackActiveTime = sCurrentTime ; BOOL final = gl_discard <= entryp->mDesiredDiscard ? TRUE : FALSE; entryp->mLastUsedDiscard = gl_discard; entryp->mCallback(TRUE, this, NULL, NULL, gl_discard, final, entryp->mUserData); @@ -2436,7 +2455,6 @@ bool LLViewerFetchedTexture::doLoadedCallbacks() if (mLoadedCallbackList.empty()) { gTextureList.mCallbackList.erase(this); - mMinDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1; } // Done with any raw image data at this point (will be re-created if we still have callbacks) @@ -2516,6 +2534,11 @@ LLImageRaw* LLViewerFetchedTexture::reloadRawImage(S8 discard_level) return mRawImage; } +bool LLViewerFetchedTexture::needsToSaveRawImage() +{ + return mForceToSaveRawImage || mSaveRawImage ; +} + void LLViewerFetchedTexture::destroyRawImage() { if (mAuxRawImage.notNull()) sAuxCount--; @@ -2526,7 +2549,7 @@ void LLViewerFetchedTexture::destroyRawImage() if(mIsRawImageValid) { - if(mForceToSaveRawImage) + if(needsToSaveRawImage()) { saveRawImage() ; } @@ -2658,7 +2681,7 @@ void LLViewerFetchedTexture::saveRawImage() mSavedRawDiscardLevel = mRawDiscardLevel ; mSavedRawImage = new LLImageRaw(mRawImage->getData(), mRawImage->getWidth(), mRawImage->getHeight(), mRawImage->getComponents()) ; - if(mSavedRawDiscardLevel <= mDesiredSavedRawDiscardLevel) + if(mForceToSaveRawImage && mSavedRawDiscardLevel <= mDesiredSavedRawDiscardLevel) { mForceToSaveRawImage = FALSE ; } @@ -2691,13 +2714,10 @@ void LLViewerFetchedTexture::forceToSaveRawImage(S32 desired_discard, bool from_ void LLViewerFetchedTexture::destroySavedRawImage() { clearCallbackEntryList() ; - //if(mForceToSaveRawImage && mDesiredSavedRawDiscardLevel >= 0 && mDesiredSavedRawDiscardLevel < getDiscardLevel()) - //{ - // return ; //can not destroy the saved raw image before it is fully fetched, otherwise causing callbacks hanging there. - //} - + mSavedRawImage = NULL ; mForceToSaveRawImage = FALSE ; + mSaveRawImage = FALSE ; mSavedRawDiscardLevel = -1 ; mDesiredSavedRawDiscardLevel = -1 ; mLastReferencedSavedRawImageTime = 0.0f ; @@ -3066,9 +3086,10 @@ void LLViewerLODTexture::scaleDown() { switchToCachedImage() ; - if(LLViewerTextureManager::sTesterp) + LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName); + if (tester) { - LLViewerTextureManager::sTesterp->setStablizingTime() ; + tester->setStablizingTime() ; } } } @@ -3578,23 +3599,22 @@ F32 LLViewerMediaTexture::getMaxVirtualSize() //---------------------------------------------------------------------------------------------- //start of LLTexturePipelineTester //---------------------------------------------------------------------------------------------- -LLTexturePipelineTester::LLTexturePipelineTester() : - LLMetricPerformanceTester("TextureTester", FALSE) -{ - addMetricString("TotalBytesLoaded") ; - addMetricString("TotalBytesLoadedFromCache") ; - addMetricString("TotalBytesLoadedForLargeImage") ; - addMetricString("TotalBytesLoadedForSculpties") ; - addMetricString("StartFetchingTime") ; - addMetricString("TotalGrayTime") ; - addMetricString("TotalStablizingTime") ; - addMetricString("StartTimeLoadingSculpties") ; - addMetricString("EndTimeLoadingSculpties") ; - - addMetricString("Time") ; - addMetricString("TotalBytesBound") ; - addMetricString("TotalBytesBoundForLargeImage") ; - addMetricString("PercentageBytesBound") ; +LLTexturePipelineTester::LLTexturePipelineTester() : LLMetricPerformanceTesterWithSession(sTesterName) +{ + addMetric("TotalBytesLoaded") ; + addMetric("TotalBytesLoadedFromCache") ; + addMetric("TotalBytesLoadedForLargeImage") ; + addMetric("TotalBytesLoadedForSculpties") ; + addMetric("StartFetchingTime") ; + addMetric("TotalGrayTime") ; + addMetric("TotalStablizingTime") ; + addMetric("StartTimeLoadingSculpties") ; + addMetric("EndTimeLoadingSculpties") ; + + addMetric("Time") ; + addMetric("TotalBytesBound") ; + addMetric("TotalBytesBoundForLargeImage") ; + addMetric("PercentageBytesBound") ; mTotalBytesLoaded = 0 ; mTotalBytesLoadedFromCache = 0 ; @@ -3606,7 +3626,7 @@ LLTexturePipelineTester::LLTexturePipelineTester() : LLTexturePipelineTester::~LLTexturePipelineTester() { - LLViewerTextureManager::sTesterp = NULL ; + LLViewerTextureManager::sTesterp = NULL; } void LLTexturePipelineTester::update() @@ -3672,22 +3692,23 @@ void LLTexturePipelineTester::reset() //virtual void LLTexturePipelineTester::outputTestRecord(LLSD *sd) { - (*sd)[mCurLabel]["TotalBytesLoaded"] = (LLSD::Integer)mTotalBytesLoaded ; - (*sd)[mCurLabel]["TotalBytesLoadedFromCache"] = (LLSD::Integer)mTotalBytesLoadedFromCache ; - (*sd)[mCurLabel]["TotalBytesLoadedForLargeImage"] = (LLSD::Integer)mTotalBytesLoadedForLargeImage ; - (*sd)[mCurLabel]["TotalBytesLoadedForSculpties"] = (LLSD::Integer)mTotalBytesLoadedForSculpties ; + std::string currentLabel = getCurrentLabelName(); + (*sd)[currentLabel]["TotalBytesLoaded"] = (LLSD::Integer)mTotalBytesLoaded ; + (*sd)[currentLabel]["TotalBytesLoadedFromCache"] = (LLSD::Integer)mTotalBytesLoadedFromCache ; + (*sd)[currentLabel]["TotalBytesLoadedForLargeImage"] = (LLSD::Integer)mTotalBytesLoadedForLargeImage ; + (*sd)[currentLabel]["TotalBytesLoadedForSculpties"] = (LLSD::Integer)mTotalBytesLoadedForSculpties ; - (*sd)[mCurLabel]["StartFetchingTime"] = (LLSD::Real)mStartFetchingTime ; - (*sd)[mCurLabel]["TotalGrayTime"] = (LLSD::Real)mTotalGrayTime ; - (*sd)[mCurLabel]["TotalStablizingTime"] = (LLSD::Real)mTotalStablizingTime ; + (*sd)[currentLabel]["StartFetchingTime"] = (LLSD::Real)mStartFetchingTime ; + (*sd)[currentLabel]["TotalGrayTime"] = (LLSD::Real)mTotalGrayTime ; + (*sd)[currentLabel]["TotalStablizingTime"] = (LLSD::Real)mTotalStablizingTime ; - (*sd)[mCurLabel]["StartTimeLoadingSculpties"] = (LLSD::Real)mStartTimeLoadingSculpties ; - (*sd)[mCurLabel]["EndTimeLoadingSculpties"] = (LLSD::Real)mEndTimeLoadingSculpties ; + (*sd)[currentLabel]["StartTimeLoadingSculpties"] = (LLSD::Real)mStartTimeLoadingSculpties ; + (*sd)[currentLabel]["EndTimeLoadingSculpties"] = (LLSD::Real)mEndTimeLoadingSculpties ; - (*sd)[mCurLabel]["Time"] = LLImageGL::sLastFrameTime ; - (*sd)[mCurLabel]["TotalBytesBound"] = (LLSD::Integer)mLastTotalBytesUsed ; - (*sd)[mCurLabel]["TotalBytesBoundForLargeImage"] = (LLSD::Integer)mLastTotalBytesUsedForLargeImage ; - (*sd)[mCurLabel]["PercentageBytesBound"] = (LLSD::Real)(100.f * mLastTotalBytesUsed / mTotalBytesLoaded) ; + (*sd)[currentLabel]["Time"] = LLImageGL::sLastFrameTime ; + (*sd)[currentLabel]["TotalBytesBound"] = (LLSD::Integer)mLastTotalBytesUsed ; + (*sd)[currentLabel]["TotalBytesBoundForLargeImage"] = (LLSD::Integer)mLastTotalBytesUsedForLargeImage ; + (*sd)[currentLabel]["PercentageBytesBound"] = (LLSD::Real)(100.f * mLastTotalBytesUsed / mTotalBytesLoaded) ; } void LLTexturePipelineTester::updateTextureBindingStats(const LLViewerTexture* imagep) @@ -3776,7 +3797,7 @@ void LLTexturePipelineTester::compareTestSessions(std::ofstream* os) } //compare and output the comparison - *os << llformat("%s\n", mName.c_str()) ; + *os << llformat("%s\n", getTesterName().c_str()) ; *os << llformat("AggregateResults\n") ; compareTestResults(os, "TotalFetchingTime", base_sessionp->mTotalFetchingTime, current_sessionp->mTotalFetchingTime) ; @@ -3831,7 +3852,7 @@ void LLTexturePipelineTester::compareTestSessions(std::ofstream* os) } //virtual -LLMetricPerformanceTester::LLTestSession* LLTexturePipelineTester::loadTestSession(LLSD* log) +LLMetricPerformanceTesterWithSession::LLTestSession* LLTexturePipelineTester::loadTestSession(LLSD* log) { LLTexturePipelineTester::LLTextureTestSession* sessionp = new LLTexturePipelineTester::LLTextureTestSession() ; if(!sessionp) @@ -3858,12 +3879,11 @@ LLMetricPerformanceTester::LLTestSession* LLTexturePipelineTester::loadTestSessi sessionp->mInstantPerformanceList[sessionp->mInstantPerformanceListCounter].mTime = 0.f ; //load a session - BOOL in_log = (*log).has(mCurLabel) ; - while(in_log) + std::string currentLabel = getCurrentLabelName(); + BOOL in_log = (*log).has(currentLabel) ; + while (in_log) { - LLSD::String label = mCurLabel ; - incLabel() ; - in_log = (*log).has(mCurLabel) ; + LLSD::String label = currentLabel ; if(sessionp->mInstantPerformanceListCounter >= (S32)sessionp->mInstantPerformanceList.size()) { @@ -3929,7 +3949,11 @@ LLMetricPerformanceTester::LLTestSession* LLTexturePipelineTester::loadTestSessi sessionp->mInstantPerformanceList[sessionp->mInstantPerformanceListCounter].mAverageBytesUsedForLargeImagePerSecond = 0 ; sessionp->mInstantPerformanceList[sessionp->mInstantPerformanceListCounter].mAveragePercentageBytesUsedPerSecond = 0.f ; sessionp->mInstantPerformanceList[sessionp->mInstantPerformanceListCounter].mTime = 0.f ; - } + } + // Next label + incrementCurrentCount() ; + currentLabel = getCurrentLabelName(); + in_log = (*log).has(currentLabel) ; } sessionp->mTotalFetchingTime += total_fetching_time ; |