Re: high system cpu usage, no culprit in top

From: Brent Miller (unraveled_at_sbcglobal.net)
Date: 04/07/04

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    Date: Wed, 07 Apr 2004 10:58:30 -0700
To: debian-user@lists.debian.org

    Justin Guerin wrote:

    >My CPU is 100% utilized, but no processes seem to be using the CPU. I can't
    >seem to figure out what's causing the load. I know that something is,
    >though, because xscreensaver is running very slow.
    >
    Some daemons (mysql comes to mind) won't show up under top, but of
    course continue to use resources. I _think_ this is because of the way
    they do threading---If you do a top or ps -A you'll only get the parent
    processes and not the children (who are actually using the cpu.)

    I remember that there is a command that shows you what processes are
    running that are not showing up under ps, but I cannot think of it at
    the moment. You can always compare the PID's from ps -A against
    /proc/[0-9]* to find the culprit though.

    HTH,
    Brent 

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