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Date: Wed, 4 Nov 2009 03:03:01 +0100
From: Karol Lewandowski <karol.k.lewandowski@gmail.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Karol Lewandowski <karol.k.lewandowski@gmail.com>,
       Frans Pop <elendil@planet.nl>, Jiri Kosina <jkosina@suse.cz>,
       Sven Geggus <lists@fuchsschwanzdomain.de>,
       Tobias Oetiker <tobi@oetiker.ch>, "Rafael J. Wysocki" <rjw@sisk.pl>,
       David Miller <davem@davemloft.net>,
       Reinette Chatre <reinette.chatre@intel.com>,
       Kalle Valo <kalle.valo@iki.fi>, David Rientjes <rientjes@google.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       Mohamed Abbas <mohamed.abbas@intel.com>,
       Jens Axboe <jens.axboe@oracle.com>,
       "John W. Linville" <linville@tuxdriver.com>,
       Pekka Enberg <penberg@cs.helsinki.fi>,
       Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
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       netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
       "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH 0/5] Candidate fix for increased number of GFP_ATOMIC
	failures V2
Message-ID: <20091104020301.GA7037@bizet.domek.prywatny>
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On Mon, Nov 02, 2009 at 08:30:34PM +0000, Mel Gorman wrote:
> Does applying the following on top make any difference?
> 
> ==== CUT HERE ====
> PM: Shrink memory before suspend

No, this patch didn't change anything either.

IIRC I get failures while free(1) shows as much as 20MB free RAM
(ie. without buffers/caches).  Additionaly nr_free_pages (from
/proc/vmstat) stays at about 800-1000 under heavy memory pressure
(gitk on full linux repository).


--- babbling follows ---

Hmm, I wonder if it's really timing issue then wouldn't be the case
that lowering swappiness sysctl would make problem more visible?
I've vm.swappiness=15, would testing with higher value make any sense?

Thanks.
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