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improved speedtest example (context-menu now allows to select the different options) and updated performance table for a newer processor

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jkriege2 2019-11-18 16:46:15 +01:00
parent 307f477626
commit 39c43ef8ab
3 changed files with 65 additions and 21 deletions
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17
examples/speed/README.md
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@ -65,7 +65,7 @@ There are different facor affecting the replot speed:
3. *Axis Scales and Plot Appearance:* Replotting is done in two steps: First the plot with the axes, labels etc. is drawn. Then the graphs are draw on top. Therefore a replot is faster, if only the graphs change, because the background (plot) does not have to be replotted.
the next table summarizes some results for plotting speed under different conditions, obatined with the test program in this directory (conditions: Qt 5.11, 32-bit, MinGW, Release, Phenom II X4 765, 500 data points):
The next table summarizes some results for plotting speed under different conditions, obatined with the test program in this directory (conditions: Qt 5.11, 32-bit, MinGW, Release, Win7, Phenom II X4 765, 500 data points):
| Anti-Aliasing | X-Axis Redraw | # Graphs | frame rate [fps] |
| ---------------- | --------------- | ------------- | ---------------- |
@ -80,3 +80,18 @@ the next table summarizes some results for plotting speed under different condit
Rerunning this test on a modern AMD Ryzen 3600 (conditions: Qt 5.13.1, 64-bit, MinGW, Release, AMD Ryzen 3600, Win10, 500 data points):
| Anti-Aliasing | X-Axis Redraw | # Graphs | frame rate [fps] |
| ---------------- | --------------- | ------------- | ---------------- |
| yes | yes | 2 | 7 |
| yes | yes | 1 | 14 |
| yes | no | 2 | 14 |
| yes | no | 1 | 28 |
| no | yes | 2 | 30 |
| no | yes | 1 | 52 |
| no | no | 2 | 59 |
| no | no | 1 | 100 |

45
examples/speed/speedtestplot.cpp
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@ -54,6 +54,30 @@ SpeedTestPlot::SpeedTestPlot():
setX(X[0], X[NDATA-1]);
setY(-2,2);
actAntiAliase=new QAction("Anti-Aliase");
actAntiAliase->setCheckable(true);
actAntiAliase->setChecked(false);
connect(actAntiAliase, &QAction::triggered, std::bind([](SpeedTestPlot* p){
p->getPlotter()->setUseAntiAliasingForGraphs(p->actAntiAliase->isChecked());
p->getPlotter()->setUseAntiAliasingForSystem(p->actAntiAliase->isChecked());
p->getPlotter()->setUseAntiAliasingForText(p->actAntiAliase->isChecked());
}, this));
actTwoGraphs=new QAction("2 Graphs");
actTwoGraphs->setCheckable(true);
actTwoGraphs->setChecked(true);
connect(actTwoGraphs, &QAction::triggered, std::bind([](SpeedTestPlot* p, JKQTPXYLineGraph* g){
g->setVisible(p->actTwoGraphs->isChecked());
}, this, graph2));
actFixedXAxis=new QAction("Fixed X-Axis");
actFixedXAxis->setCheckable(true);
actFixedXAxis->setChecked(false);
addAction(actAntiAliase);
addAction(actTwoGraphs);
addAction(actFixedXAxis);
// show plotter and make it a decent size
show();
resize(1000,500);
@ -66,6 +90,17 @@ SpeedTestPlot::~SpeedTestPlot()
void SpeedTestPlot::plotNewData()
{
if (actFixedXAxis->isChecked()) {
// ALTERNATIVE: MOVE data, but keep x-axis range
x0+=dx;
for (size_t i=0; i<NDATA-1; i++) {
Y[i]=Y[i+1];
Y2[i]=Y2[i+1];
}
// add one new data point
Y[NDATA-1]=sin(X[NDATA-1]+x0)+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
Y2[NDATA-1]=cos(X[NDATA-1]+x0)+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
} else {
// move old data to the left
for (size_t i=0; i<NDATA-1; i++) {
X[i]=X[i+1];
@ -77,17 +112,7 @@ void SpeedTestPlot::plotNewData()
Y[NDATA-1]=sin(X[NDATA-1])+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
Y2[NDATA-1]=cos(X[NDATA-1])+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
/*
// ALTERNATIVE: MOVE data, but keep x-axis range
x0+=dx;
for (size_t i=0; i<NDATA-1; i++) {
Y[i]=Y[i+1];
Y2[i]=Y2[i+1];
}
// add one new data point
Y[NDATA-1]=sin(X[NDATA-1]+x0)+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
Y2[NDATA-1]=cos(X[NDATA-1]+x0)+static_cast<double>(std::rand())/static_cast<double>(RAND_MAX + 1u)-0.5;
*/
// set new x-range and replot

4
examples/speed/speedtestplot.h
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@ -15,10 +15,14 @@ class SpeedTestPlot: public JKQTPlotter {
const double dx;
double x0;
std::chrono::system_clock::time_point t_lastplot;
QAction* actAntiAliase;
QAction* actTwoGraphs;
QAction* actFixedXAxis;
public:
SpeedTestPlot();
virtual ~SpeedTestPlot();
public slots:
void plotNewData();
};