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 Post subject: Diag the CPU usage issues
PostPosted: Wed 10 Oct 2018 9:38 pm 
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To diag the CPU usage issues, you should use Event Tracing for Windows (ETW) to capture CPU Sampling data / Profile.

To capture the data, install the Windows Performance Toolkit, which is part of the Windows SDK.

yYJsp.png

Now run WPRUI.exe, select First Level, under Resource select CPU usage and click on start.

1vXVx.png

Now capture 1 minute of the CPU usage. After 1 minute click on Save.

Now analyze the generated ETL file with the Windows Performance Analyzer by drag & drop the CPU Usage (sampled) graph to the analysis pane and order the columns like you see in the picture:

57XUp.png

Inside WPA, load the debug symbols and expand Stack of the SYSTEM process. In this demo, the CPU usage comes from the nVIDIA driver.


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