From: Con Kolivas <kernel@kolivas.org>
To: mru@users.sourceforge.net (=?iso-8859-1?q?M=E5ns?=
	=?iso-8859-1?q?=20Rullg=E5rd?=),
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH] O17int
Date: Wed, 20 Aug 2003 11:23:29 +1000
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On Wed, 20 Aug 2003 02:39, M?ns Rullg?rd wrote:
> Con Kolivas <kernel@kolivas.org> writes:
> > Food for the starving masses.
> >
> > This patch prevents any single task from being able to starve the
> > runqueue that it's on. This minimises the impact a poorly behaved
> > application or a malicious one has on the rest of the system. If an
>
> I have to disagree.  Open a file of a few hundred lines in XEmacs and
> do a regexp search for "^[> ]*-*\n\\([> ]*.*\n\\)*[> ]*foo".  The
> system will more or less freeze.  It's a very nasty regexp, and it's
> an error to try to use it, but it still shouldn't freeze the system.

Reasonably sure this is a variation on the starvation which O17 won't address. 
Please top/vmstat/profile this and I'll look into it. There is potential for 
starvation without using up full timeslices and this may be it.

Con

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