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Don't recalculate histogram bins every frame.

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This remedies slowdown that was only visible when a histogram of a large
number of zones (~100 million) was displayed. The slowdown was caused by
std::accumulate() calls over whole set of zones.
This commit is contained in:
Bartosz Taudul 2019-06-16 16:41:52 +02:00
parent 14398dd4e8
commit d683699ba9
2 changed files with 87 additions and 67 deletions
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146
server/TracyView.cpp
View File

@ -6313,25 +6313,81 @@ void View::DrawFindZone()
m_findZone.bins = std::make_unique<int64_t[]>( numBins ); m_findZone.bins = std::make_unique<int64_t[]>( numBins );
m_findZone.binTime = std::make_unique<int64_t[]>( numBins ); m_findZone.binTime = std::make_unique<int64_t[]>( numBins );
m_findZone.selBin = std::make_unique<int64_t[]>( numBins ); m_findZone.selBin = std::make_unique<int64_t[]>( numBins );
m_findZone.binCache.numBins = -1;
} }
const auto& bins = m_findZone.bins; const auto& bins = m_findZone.bins;
const auto& binTime = m_findZone.binTime; const auto& binTime = m_findZone.binTime;
const auto& selBin = m_findZone.selBin; const auto& selBin = m_findZone.selBin;
memset( bins.get(), 0, sizeof( int64_t ) * numBins ); const auto distBegin = std::distance( sorted.begin(), sortedBegin );
memset( binTime.get(), 0, sizeof( int64_t ) * numBins ); const auto distEnd = std::distance( sorted.begin(), sortedEnd );
memset( selBin.get(), 0, sizeof( int64_t ) * numBins ); if( m_findZone.binCache.numBins != numBins ||
m_findZone.binCache.distBegin != distBegin ||
if( m_findZone.logTime ) m_findZone.binCache.distEnd != distEnd )
{ {
const auto tMinLog = log10( tmin ); m_findZone.binCache.numBins = numBins;
const auto zmax = ( log10( tmax ) - tMinLog ) / numBins; m_findZone.binCache.distBegin = distBegin;
m_findZone.binCache.distEnd = distEnd;
memset( bins.get(), 0, sizeof( int64_t ) * numBins );
memset( binTime.get(), 0, sizeof( int64_t ) * numBins );
memset( selBin.get(), 0, sizeof( int64_t ) * numBins );
if( m_findZone.logTime )
{ {
const auto tMinLog = log10( tmin );
const auto zmax = ( log10( tmax ) - tMinLog ) / numBins;
{
auto zit = sortedBegin;
for( int64_t i=0; i<numBins; i++ )
{
const auto nextBinVal = int64_t( pow( 10.0, tMinLog + ( i+1 ) * zmax ) );
auto nit = std::lower_bound( zit, sortedEnd, nextBinVal );
const auto distance = std::distance( zit, nit );
const auto timeSum = std::accumulate( zit, nit, int64_t( 0 ) );
bins[i] = distance;
binTime[i] = timeSum;
if( m_findZone.highlight.active )
{
auto end = nit == zit ? zit : nit-1;
if( *zit >= s && *end <= e ) selectionTime += timeSum;
}
zit = nit;
}
const auto timeSum = std::accumulate( zit, sortedEnd, int64_t( 0 ) );
bins[numBins-1] += std::distance( zit, sortedEnd );
binTime[numBins-1] += timeSum;
if( m_findZone.highlight.active && *zit >= s && *(sortedEnd-1) <= e ) selectionTime += timeSum;
}
if( m_findZone.selGroup != m_findZone.Unselected )
{
auto zit = m_findZone.selSort.begin();
while( zit != m_findZone.selSort.end() && *zit == 0 ) ++zit;
for( int64_t i=0; i<numBins; i++ )
{
const auto nextBinVal = int64_t( pow( 10.0, tMinLog + ( i+1 ) * zmax ) );
auto nit = std::lower_bound( zit, m_findZone.selSort.end(), nextBinVal );
if( cumulateTime )
{
selBin[i] = std::accumulate( zit, nit, int64_t( 0 ) );
}
else
{
selBin[i] = std::distance( zit, nit );
}
zit = nit;
}
}
}
else
{
const auto zmax = tmax - tmin;
auto zit = sortedBegin; auto zit = sortedBegin;
for( int64_t i=0; i<numBins; i++ ) for( int64_t i=0; i<numBins; i++ )
{ {
const auto nextBinVal = int64_t( pow( 10.0, tMinLog + ( i+1 ) * zmax ) ); const auto nextBinVal = tmin + ( i+1 ) * zmax / numBins;
auto nit = std::lower_bound( zit, sortedEnd, nextBinVal ); auto nit = std::lower_bound( zit, sortedEnd, nextBinVal );
const auto distance = std::distance( zit, nit ); const auto distance = std::distance( zit, nit );
const auto timeSum = std::accumulate( zit, nit, int64_t( 0 ) ); const auto timeSum = std::accumulate( zit, nit, int64_t( 0 ) );
@ -6348,69 +6404,25 @@ void View::DrawFindZone()
bins[numBins-1] += std::distance( zit, sortedEnd ); bins[numBins-1] += std::distance( zit, sortedEnd );
binTime[numBins-1] += timeSum; binTime[numBins-1] += timeSum;
if( m_findZone.highlight.active && *zit >= s && *(sortedEnd-1) <= e ) selectionTime += timeSum; if( m_findZone.highlight.active && *zit >= s && *(sortedEnd-1) <= e ) selectionTime += timeSum;
}
if( m_findZone.selGroup != m_findZone.Unselected ) if( m_findZone.selGroup != m_findZone.Unselected )
{
auto zit = m_findZone.selSort.begin();
while( zit != m_findZone.selSort.end() && *zit == 0 ) ++zit;
for( int64_t i=0; i<numBins; i++ )
{ {
const auto nextBinVal = int64_t( pow( 10.0, tMinLog + ( i+1 ) * zmax ) ); auto zit = m_findZone.selSort.begin();
auto nit = std::lower_bound( zit, m_findZone.selSort.end(), nextBinVal ); while( zit != m_findZone.selSort.end() && *zit == 0 ) ++zit;
if( cumulateTime ) for( int64_t i=0; i<numBins; i++ )
{ {
selBin[i] = std::accumulate( zit, nit, int64_t( 0 ) ); const auto nextBinVal = tmin + ( i+1 ) * zmax / numBins;
auto nit = std::lower_bound( zit, m_findZone.selSort.end(), nextBinVal );
if( cumulateTime )
{
selBin[i] = std::accumulate( zit, nit, int64_t( 0 ) );
}
else
{
selBin[i] = std::distance( zit, nit );
}
zit = nit;
} }
else
{
selBin[i] = std::distance( zit, nit );
}
zit = nit;
}
}
}
else
{
const auto zmax = tmax - tmin;
auto zit = sortedBegin;
for( int64_t i=0; i<numBins; i++ )
{
const auto nextBinVal = tmin + ( i+1 ) * zmax / numBins;
auto nit = std::lower_bound( zit, sortedEnd, nextBinVal );
const auto distance = std::distance( zit, nit );
const auto timeSum = std::accumulate( zit, nit, int64_t( 0 ) );
bins[i] = distance;
binTime[i] = timeSum;
if( m_findZone.highlight.active )
{
auto end = nit == zit ? zit : nit-1;
if( *zit >= s && *end <= e ) selectionTime += timeSum;
}
zit = nit;
}
const auto timeSum = std::accumulate( zit, sortedEnd, int64_t( 0 ) );
bins[numBins-1] += std::distance( zit, sortedEnd );
binTime[numBins-1] += timeSum;
if( m_findZone.highlight.active && *zit >= s && *(sortedEnd-1) <= e ) selectionTime += timeSum;
if( m_findZone.selGroup != m_findZone.Unselected )
{
auto zit = m_findZone.selSort.begin();
while( zit != m_findZone.selSort.end() && *zit == 0 ) ++zit;
for( int64_t i=0; i<numBins; i++ )
{
const auto nextBinVal = tmin + ( i+1 ) * zmax / numBins;
auto nit = std::lower_bound( zit, m_findZone.selSort.end(), nextBinVal );
if( cumulateTime )
{
selBin[i] = std::accumulate( zit, nit, int64_t( 0 ) );
}
else
{
selBin[i] = std::distance( zit, nit );
}
zit = nit;
} }
} }
} }

8
server/TracyView.hpp
View File

@ -376,6 +376,13 @@ private:
int selCs = 0; int selCs = 0;
int minBinVal = 1; int minBinVal = 1;
struct
{
int numBins = -1;
ptrdiff_t distBegin;
ptrdiff_t distEnd;
} binCache;
void Reset() void Reset()
{ {
ResetMatch(); ResetMatch();
@ -411,6 +418,7 @@ private:
selAverage = 0; selAverage = 0;
selMedian = 0; selMedian = 0;
selTotal = 0; selTotal = 0;
binCache.numBins = -1;
} }
void ShowZone( int32_t srcloc, const char* name ) void ShowZone( int32_t srcloc, const char* name )