linux-kernel - Re: iwlagn: order 2 page allocation failures

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Date:	Sun, 06 Sep 2009 11:35:16 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Frans Pop <elendil@...net.nl>
Cc:	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	ipw3945-devel@...ts.sourceforge.net, Mel Gorman <mel@....ul.ie>,
	Andrew Morton <akpm@...ux-foundation.org>,
	cl@...ux-foundation.org
Subject: Re: iwlagn: order 2 page allocation failures

On Sun, 2009-09-06 at 10:28 +0200, Frans Pop wrote:
> On Sunday 06 September 2009, Pekka Enberg wrote:
> > On Sun, Sep 6, 2009 at 10:40 AM, Frans Pop<elendil@...net.nl> wrote:
> > > Got a couple of page allocation failures today while viewing fairly
> > > large images. System was struggling for a bit to reorganize memory
> > > and swap, but nothing really serious. Everything recovered fairly
> > > quickly.
> > >
> > > Anything to look into?
> > >
> > > System: HP 2510p; 2.6.31-rc7-56-g7c0a57d; Debian stable, KDE desktop
> > >
> > > 10:00.0 Network controller [0280]: Intel Corporation PRO/Wireless
> > > 4965 AG or AGN [Kedron] Network Connection [8086:4229] (rev 61)
> >
> > Can you post your .config, please?
> 
> Attached. Thanks.

OK, so SLUB_DEBUG_ON is disabled so it's probably not a SLUB problem.
Mel, there's quite a few page allocation failure reports recently which
makes me wonder if we broke something with the page allocator
optimization patches? Do you think the anti-fragmentation fixlet you did
for nommu would help here?

			Pekka

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