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Not sure what is going on. I have ran Process Explorer and I dont' see any of the usual culprits. I have consistent 70-90% CPU usage. It's often within the services process due to Windows Update. I typically just disable the windows update service and I'm good to go. But over the last couple days, ntoskrnl.exe has been chewing away at my performance big time.

My computer starts slowing down more and more and more, and eventually practically comes to a halt. Oddly enough, sometimes it will slow down to a grind even though the CPU usage only says it is at 50%. A couple months ago I upgraded the RAM to 16GB, which seemed to help but now it seems whatever issue I am dealing with has finally caught back up.

I don't see anything particularly insightful to me within process explorer, and none of the help articles I googled are helpful. Any tips?

Austin W. Brister
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1 Answers1

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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.

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

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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 colums like you see in the picture:

enter image description here

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

magicandre1981
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