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SubjectRe: [BUG] Serious scheduler starvation
Date
Con Kolivas <kernel@kolivas.org> writes:

>> First the machine details. It's a Pentium4 running at 2 GHz. Linux
>> version 2.6.0-test3 + O16int + softrr.
>
> Softrr ? Which patch? Davide's? Noone has tried to make them compatible
> (yet?). Even so, this may be unrelated to softrr.

Are there more than one. I'm using something off xmailserver.org.
Anyhow, no softrr tasks were running at the time.

>> What can I do to collect more information about the problem?
>
> Run top in batch mode as root reniced to -11 so it doesn't get preempted and
> capture it happening before you kill XEmacs. Then try running XEmacs niced
> +10 and see if it doesn't happen there. Also if it was lucky enough that you
> booted with profiling enabled you could profile it, but top will
> tell if it's a simple scheduler starvation error.

I'll do that, it's easily reproducible, at least.

--
Måns Rullgård
mru@users.sf.net

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