Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Occasionally, when looking at htop, I'll see my CPU spiking to 100%.

However, when I sort my running processes by CPU utilization, they don't sum to 100%. They don't even come close.

What "hidden" processes are running that are consuming my CPU? Can I see them?

Note that I'm still finding this to be the case, even though I modified htop's settings to display all threads and to not hide kernel threads.

share|improve this question

migrated from stackoverflow.com Feb 17 '11 at 18:50

This question came from our site for professional and enthusiast programmers.

    
You'll have more luck asking this on unix.stackexchange.com –  ajm Feb 17 '11 at 18:50

1 Answer 1

For example IO wait (time CPU used to wait disk and other IO devices) is not counted on process CPU percents. In case of virtual machine, stolen processor time (used by host or another virtual machine) is not showing up on process CPU times either.

Also, typically sum and per process values are not perfectly in sync.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.