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Display standard deviation in frame statistics.

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This commit is contained in:
Bartosz Taudul
2026-06-24 19:21:40 +02:00
parent 3714e36652
commit a35f8a738d
2 changed files with 25 additions and 1 deletions
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2
profiler/src/profiler/TracyView.hpp
View File

@@ -949,6 +949,8 @@ private:
bool limitToView = false;
std::pair<int, int> limitRange = { -1, 0 };
int minBinVal = 1;
double sumSq = 0;
float sd = 0;
} m_frameSortData;
struct {

24
profiler/src/profiler/TracyView_FrameStatistics.cpp
View File

@@ -11,7 +11,7 @@ extern double s_time;
void View::DrawFrameStatistics()
{
const auto scale = GetScale();
ImGui::SetNextWindowSize( ImVec2( 550 * scale, 650 * scale ), ImGuiCond_FirstUseEver );
ImGui::SetNextWindowSize( ImVec2( 650 * scale, 500 * scale ), ImGuiCond_FirstUseEver );
ImGui::Begin( "Frame statistics", &m_showFrameStatistics );
auto fsz = m_worker.GetFullFrameCount( *m_frames );
@@ -58,9 +58,11 @@ void View::DrawFrameStatistics()
m_frameSortData.frameNum = 0;
m_frameSortData.data.clear();
m_frameSortData.total = 0;
m_frameSortData.sumSq = 0;
}
bool recalc = false;
int64_t total = 0;
double sumSq = 0;
if( !m_frameSortData.limitToView )
{
if( m_frameSortData.frameNum != fsz || m_frameSortData.limitRange.first != -1 )
@@ -69,6 +71,7 @@ void View::DrawFrameStatistics()
vec.reserve( fsz );
const auto midSz = vec.size();
total = m_frameSortData.total;
sumSq = m_frameSortData.sumSq;
for( size_t i=m_frameSortData.frameNum; i<fsz; i++ )
{
const auto t = m_worker.GetFrameTime( *m_frames, i );
@@ -76,6 +79,7 @@ void View::DrawFrameStatistics()
{
vec.emplace_back( t );
total += t;
sumSq += double( t ) * t;
}
}
auto mid = vec.begin() + midSz;
@@ -99,6 +103,7 @@ void View::DrawFrameStatistics()
{
vec.emplace_back( t );
total += t;
sumSq += double( t ) * t;
}
}
pdqsort_branchless( vec.begin(), vec.end() );
@@ -113,7 +118,19 @@ void View::DrawFrameStatistics()
m_frameSortData.average = float( total ) / vsz;
m_frameSortData.median = vec[vsz/2];
m_frameSortData.total = total;
m_frameSortData.sumSq = sumSq;
m_frameSortData.frameNum = fsz;
if( vsz > 1 )
{
const auto avg = m_frameSortData.average;
const auto ss = m_frameSortData.sumSq - 2. * total * avg + avg * avg * vsz;
m_frameSortData.sd = sqrt( ss / ( vsz - 1 ) );
}
else
{
m_frameSortData.sd = 0;
}
}
const auto profileSpan = m_worker.GetLastTime();
@@ -324,6 +341,11 @@ void View::DrawFrameStatistics()
ImGui::EndTooltip();
}
}
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
TextFocused( "\xcf\x83:", TimeToString( m_frameSortData.sd ) );
TooltipIfHovered( "Standard deviation" );
ImGui::PushStyleVar( ImGuiStyleVar_FramePadding, ImVec2( 0, 0 ) );
ImGui::Checkbox( "###draw1", &m_frameSortData.drawAvgMed );