To: linux-kernel@vger.kernel.org
From: mru@users.sourceforge.net (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=)
Subject: Re: [BUG]  Serious scheduler starvation
Date: Sun, 17 Aug 2003 15:17:17 +0200
Message-ID: <yw1xada8v2xu.fsf@users.sourceforge.net>
References: <yw1xekzkv5yv.fsf@users.sourceforge.net> <200308172252.52464.kernel@kolivas.org>
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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.

-- 
M?ns Rullg?rd
mru@users.sf.net

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