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Syncfusion Feedback

CPU usage of Real Time Charts

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89654 Sep 1,2009 01:08 PM UTC Sep 2,2009 10:37 AM UTC ASP.NET Web Forms (Classic) 1
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Tags: Chart
Xu Shi
Asked On September 1, 2009 01:08 PM UTC

Dear Sir/Madam:

I have a question regarding the CPU usage of the Chart Controls.

In Essential Studion v7.2.0.37 for Windows Forms, I tested the Chart Samples ==> Real Time ==> Chart Recorder.
I launched the sample directly from RUN SAMPLE. Once I unchecked the Scrolling checkbox and waited for 5 minutes,
Over 50% of the CPU was used by the application. (It’s similar for Chart Samples ==> Real Time ==> Chart Real Time.)

Is this normal? Is there a way to reduce the CPU usage?
Attached is some screen shots.

Thanks!

Xu Shi



ChartRealTime_CPU_Usage_f0dd31c6.doc

Venkata Vijayaraj B [Syncfusion]
Replied On September 2, 2009 10:37 AM UTC

Hi Xu Shi,

Thanks for your interest in Syncfusion products.

In the given sample, interval property of timer is set to very lowest value (200 milliseconds). When we set this value to a considerable time interval (800 milliseconds), then CPU usage will be decreased.

We are also having properties and methods to improve the Chart Performance when very large amount of points are loaded in the Chart.

Refer the following link for further details.
http://help.syncfusion.com/ug_72/chartwin/ImprovingPerformance.html

Please let me know if you have any other concerns.

Regard,
Venkat.

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