CPU Performance Plotting

[nike.niec]

Is there any in-bulit Qt Widget classes to plot CPU Performance as plotted in Windows Task Manager.
Is there any examples available?

[MuldeR]

I don't think so. Have a look at the "GetSystemTimes":http://goo.gl/SM13I1 function!

And keep in mind that:
@lpUserTime_Delta = lpUserTime[n] - lpUserTime[n-1];
lpKernelTime_Delta = lpKernelTime[n] - lpKernelTime[n-1];
lpIdleTime_Delta = lpIdleTime[n] = lpIdleTime[n-1];

totalTime = lpUserTime_Delta + lpKernelTime_Delta;
busyTime = totalTime - lpIdleTime_Delta;

cpuUsage = (double) busyTime / totalTime;@

[nike.niec]

Thanks for reply.
Definitely,it will help logically.
But to plot CPU performance on x-y graph ,can you suggest some Qt Classes or any useful logic

[tubbias]

I would recommend "QCustomPlot":http://www.qcustomplot.com/.

[Soraltan]

I would agree with that recommendation. However, it is to mention, that QCustomPlot does not offer the desired plot per se. It just offers a general (and very convenient) Qt way to plot arbitrary data and measurements. The data (in this case CPU load) has to be provided though.

[nike.niec]

Hi,
Can anyone tell the logic to know CPU performance in linux using Qt C++ code.