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Diagnose CPU consumption

  • 3 replies
  • 1 has this problem
  • 31 views
  • Last reply by McCoy

wirch.eduard
wirch.eduard

Once in a while I see one of my CPU cores 100% utilized. Checking process list reveals Firefox. This state persists until I open the Firefox Task Manager. The CPU utilization instantly drops to few percent.

Any idea how I can diagnose what causes this CPU utilization?

Note: `perf` says the Web Content thread is 100% utilized. But the call stack gives no obvious hints about the reason.

Once in a while I see one of my CPU cores 100% utilized. Checking process list reveals Firefox. This state persists until I open the Firefox Task Manager. The CPU utilization instantly drops to few percent. Any idea how I can diagnose what causes this CPU utilization? Note: `perf` says the Web Content thread is 100% utilized. But the call stack gives no obvious hints about the reason.

Modified by wirch.eduard

Chosen solution

profiler.firefox.com did the trick. Thanks.

Read this answer in context 👍 0

All Replies (3)

McCoy
McCoy

Hello wirch.eduard ,

Three things you could do :

I hope that gives you enough information (?)

wirch.eduard
wirch.eduard Question owner

Chosen Solution

profiler.firefox.com did the trick. Thanks.

McCoy
McCoy

wirch.eduard said

profiler.firefox.com did the trick. .

Good for you to have found that !

Would you be so kind as to mark your own post as Chosen Solution, so others with the same question, will know where to look ?

It's the "Solved the problem" button to the right of your post.