Persisting troubles with periodic stalls every few minutes
Kris Kennaway
kris at obsecurity.org
Wed Jan 19 19:19:45 PST 2005
On Thu, Jan 20, 2005 at 02:36:30AM +0100, Bartosz Fabianowski wrote:
> When everything is working normally, the CPU is at:
> 15% system 30% user 65% idle
>
> At the first screen update after a stall, the CPU is at:
> 15% system 85% user 0% idle
>
> Also, the VM statistics such as "zfod" and "ofod" have jumped from their
> usual zero level to several thousand. And disk activity is reported as
> high, of course. A couple seconds after the stall is over, all
> statistics return to their normal values.
>
> So, some user process is misbehaving. And has been doing so ever since
> this box was set up. Plus, it is somehow disk related and happens no
> matter what I am running or not, what I am doing or not.
>
> Any ideas on how to debug this? How can I find the guilty process?
Try top, ps, systat, etc.
Kris
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