Now I finally changed my existing ComponentOne Chart graph component with the CXTPChart component. My first experience is, that I really hope that I do something very wrong, since the performance is very bad compared.

My main loop for updating data is like this:

SetUpdateWindow(FALSE);
m_pSeries->GetPoints()->RemoveAll();
for (int i=0;i<20000;i++)
{
  double dData = pData[i];
  double dX = (double)i;
  double dY = (double)dData;
  m_pSeries->GetPoints()->Add(new CXTPChartSeriesPoint(dX,dY));
}
SetUpdateWindow(TRUE);

The remove and the loop takes around 6 seconds to run!

What can I do to boost performance, Component Chart uses 750 msec for the same action! The time measurements are made in debug builds, so I guess that the performance is slightly better in release.

-cpede

It is not surprising that chart component is slow given its current architecture (each data point being a separate object created on heap). new operator is slow. 

My in-house developed charting components can add 3 *million* data points and draw candlestick chart with 3 million bars in under 0.15 seconds. But it is written in pure C and it allocates one contiguous array for all data points at once (in one HeapAlloc call).

If you want speed there is no choice - you have to write code yourself. I am yet to see any commercial chart component that delivers performance required for demanding real-time charting applications.