From: Karol Lewandowski <karol.k.lewandowski@gmail.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Karol Lewandowski <karol.k.lewandowski@gmail.com>,
David Rientjes <rientjes@google.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Kernel Testers List <kernel-testers@vger.kernel.org>,
Frans Pop <elendil@planet.nl>,
Pekka Enberg <penberg@cs.helsinki.fi>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
Mohamed Abbas <mohamed.abbas@intel.com>,
"John W. Linville" <linville@tuxdriver.com>,
linux-mm@kvack.org, jens.axboe@oracle.com,
Tobias Oetiker <tobi@oetiker.ch>
Subject: Re: [PATCH] SLUB: Don't drop __GFP_NOFAIL completely from allocate_slab() (was: Re: [Bug #14265] ifconfig: page allocation failure. order:5,ode:0x8020 w/ e100)
Date: Thu, 22 Oct 2009 23:33:53 +0200 [thread overview]
Message-ID: <20091022213353.GA7137@bizet.domek.prywatny> (raw)
In-Reply-To: <20091022102014.GL11778@csn.ul.ie>
On Thu, Oct 22, 2009 at 11:20:14AM +0100, Mel Gorman wrote:
> On Wed, Oct 21, 2009 at 11:20:34PM +0200, Karol Lewandowski wrote:
> > > Note: slub isn't going to be a culprit in order 5 allocation failures
> > > since they have kmalloc passthrough to the page allocator.
> >
> > However, it might change fragmentation somewhat I guess. This might
> > make problem more/less visible.
> >
>
> Did you have CONFIG_KMEMCHECK set by any chance?
No, kmemcheck (and kmemleak) was always disabled.
It's likely that's possible to trigger allocation failures with slab,
I just haven't been successful at it. Lack of good testcase is really
problem here -- even if I can't trigger failures I can never be sure
that these wont appear in some strange moment.
BTW I'll test your patches (from another thread) shortly.
Thanks.
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prev parent reply other threads:[~2009-10-22 21:33 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3onW63eFtRF.A.xXH.oMTxKB@chimera>
[not found] ` <COE24pZSBH.A.k2B.ZNTxKB@chimera>
[not found] ` <200910021111.55749.elendil@planet.nl>
2009-10-05 5:13 ` [Bug #14141] order 2 page allocation failures in iwlagn Frans Pop
2009-10-05 6:50 ` Frans Pop
2009-10-05 8:54 ` Frans Pop
2009-10-05 8:57 ` Mel Gorman
2009-10-05 21:34 ` Frans Pop
2009-10-06 0:04 ` David Rientjes
2009-10-06 1:25 ` KOSAKI Motohiro
2009-10-06 8:53 ` Mel Gorman
2009-10-06 9:14 ` David Rientjes
2009-10-06 9:22 ` Mel Gorman
2009-10-06 10:23 ` Frans Pop
2009-10-11 23:10 ` Frans Pop
2009-10-11 23:36 ` Frans Pop
2009-10-12 13:43 ` Mel Gorman
2009-10-12 17:32 ` Frans Pop
2009-10-12 18:43 ` Mel Gorman
2009-10-13 20:38 ` Frans Pop
2009-10-14 10:30 ` Mel Gorman
2009-10-14 13:10 ` Frans Pop
2009-10-14 15:40 ` Mel Gorman
2009-10-14 16:13 ` Frans Pop
2009-10-14 18:34 ` Frans Pop
2009-10-14 23:56 ` Mel Gorman
2009-10-15 20:15 ` Frans Pop
2009-10-16 9:39 ` Mel Gorman
2009-10-14 16:30 ` reinette chatre
2009-10-18 23:33 ` Frans Pop
2009-10-19 0:36 ` Pekka Enberg
2009-10-19 2:44 ` Frans Pop
2009-10-19 9:49 ` [Bug #14141] order 2 page allocation failures (generic) Tobi Oetiker
2009-10-19 9:54 ` Pekka Enberg
2009-10-19 14:01 ` Karol Lewandowski
2009-10-19 14:06 ` Mel Gorman
2009-10-19 17:09 ` Karol Lewandowski
2009-10-20 1:47 ` Karol Lewandowski
2009-10-19 13:31 ` Mel Gorman
2009-10-19 13:40 ` Tobias Oetiker
2009-10-19 14:09 ` Mel Gorman
2009-10-19 14:16 ` Tobias Oetiker
2009-10-19 14:59 ` Mel Gorman
2009-10-19 20:12 ` Tobias Oetiker
2009-10-19 20:17 ` Tobias Oetiker
2009-10-20 10:57 ` Mel Gorman
2009-10-20 11:44 ` Tobias Oetiker
2009-10-20 12:51 ` Mel Gorman
2009-10-20 12:58 ` Tobias Oetiker
2009-10-20 13:39 ` Mel Gorman
2009-10-20 13:50 ` Tobias Oetiker
2009-10-20 14:14 ` Mel Gorman
2009-10-20 14:20 ` Tobias Oetiker
2009-10-22 10:27 ` Tobias Oetiker
2009-10-19 2:52 ` [Bug #14141] order 2 page allocation failures in iwlagn Jens Axboe
2009-10-19 14:01 ` Mel Gorman
2009-10-19 16:18 ` Chris Mason
2009-10-19 17:01 ` Christoph Hellwig
2009-10-19 21:57 ` Chris Mason
2009-10-19 17:01 ` Christoph Hellwig
2009-10-20 10:48 ` Mel Gorman
2009-10-20 10:48 ` Mel Gorman
2009-10-26 21:06 ` Frans Pop
2009-10-27 14:54 ` Mel Gorman
2009-10-27 15:16 ` KOSAKI Motohiro
2009-10-27 15:21 ` Mel Gorman
2009-10-27 15:52 ` Mel Gorman
2009-10-27 16:03 ` Chris Mason
2009-10-27 17:21 ` Frans Pop
2009-10-27 17:21 ` Frans Pop
2009-11-05 20:14 ` Frans Pop
2009-11-06 9:51 ` Frans Pop
2009-11-09 19:00 ` Mel Gorman
2009-10-25 18:54 ` Frans Pop
2009-10-14 16:28 ` reinette chatre
2009-10-14 16:50 ` Mel Gorman
2009-10-14 20:41 ` reinette chatre
2009-10-14 21:33 ` Frans Pop
2009-10-14 21:55 ` reinette chatre
2009-10-15 2:02 ` Frans Pop
2009-10-15 15:29 ` reinette chatre
2009-10-15 19:41 ` Frans Pop
2009-10-16 17:21 ` reinette chatre
2009-10-17 5:42 ` reinette chatre
2009-10-27 11:10 ` Frans Pop
2009-10-27 16:15 ` reinette chatre
[not found] ` <COE24pZSBH.A.rP.2MTxKB@chimera>
2009-10-21 20:04 ` [PATCH] SLUB: Don't drop __GFP_NOFAIL completely from allocate_slab() (was: Re: [Bug #14265] ifconfig: page allocation failure. order:5,ode:0x8020 w/ e100) Karol Lewandowski
2009-10-21 21:06 ` David Rientjes
2009-10-21 21:20 ` Karol Lewandowski
2009-10-22 10:20 ` Mel Gorman
2009-10-22 21:33 ` Karol Lewandowski [this message]
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