From: Corrado Zoccolo <czoccolo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Tobias Oetiker <tobi-7K0TWYW2a3pyDzI6CaY1VQ@public.gmane.org>
Cc: Mel Gorman <mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
KOSAKI Motohiro
<kosaki.motohiro-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
Frans Pop <elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>,
Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>,
Sven Geggus
<lists-+AJD3D7QEjjt/htJsj1pd9AswbaBtrod@public.gmane.org>,
Karol Lewandowski
<karol.k.lewandowski-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"
<linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
Pekka Enberg <penberg-bbCR+/B0CizivPeTLB3BmA@public.gmane.org>,
Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Christoph Lameter
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Stephan von Krawczynski
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"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>,
Kernel Testers List
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Subject: Re: still getting allocation failures (was Re: [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met V2)
Date: Mon, 14 Dec 2009 09:49:32 +0100 [thread overview]
Message-ID: <4e5e476b0912140049x29d2905epf1a21bfdbd1709a6@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.00.0912140646550.12657-EjsAmf5DE5zIvOfxy3zmAzgUDZmNtoG9@public.gmane.org>
Hi Tobi,
On Mon, Dec 14, 2009 at 6:59 AM, Tobias Oetiker <tobi-7K0TWYW2a3pyDzI6CaY1VQ@public.gmane.org> wrote:
> Hi Corrado,
>
> Dec 3 Corrado Zoccolo wrote:
>
>> Hi Tobias,
>> does the patch in http://lkml.org/lkml/2009/11/30/301 help with your
>> high order allocation problems?
>> It seems that you have lot of memory, but high order pages do not show up.
>> The patch should make them more likely to appear.
>> On my machine (that has much less ram than yours), with the patch, I
>> always have order-10 pages available.
>
> I have tried it and ... it does not work, the  page allocation
> failure still shows. BUT while testing it on two machines I found that it
> only shows on on machine. The workload on the two machines is
> similar (they both run virtualbox) and also the available memory.
Where those both failing before the patch?
Did the order of failure change?
> Could it be caused by a hardware driver ?
It should be something that is taking more time to release pages, but
I don't know what can it be. What happens if you drop the caches when
you are getting failures? Does the failure rate drops as if you had
just rebooted?
Can you log at regular intervals the content of /proc/buddyinfo, and
try correlating when the number of pages of the requested order are
becoming scarce with some other event?
Thanks,
Corrado
>
> cheers
> tobi
>
> --
> Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
> http://it.oetiker.ch tobi-7K0TWYW2a3pyDzI6CaY1VQ@public.gmane.org ++41 62 775 9902 / sb: -9900
>
--
__________________________________________________________________________
dott. Corrado Zoccolo mailto:czoccolo-Re5JQEeQqe8@public.gmane.orgm
PhD - Department of Computer Science - University of Pisa, Italy
--------------------------------------------------------------------------
The self-confidence of a warrior is not the self-confidence of the average
man. The average man seeks certainty in the eyes of the onlooker and calls
that self-confidence. The warrior seeks impeccability in his own eyes and
calls that humbleness.
Tales of Power - C. Castaneda
next prev parent reply other threads:[~2009-12-14 8:49 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-12 19:30 [PATCH 0/5] Reduce GFP_ATOMIC allocation failures, candidate fix V3 Mel Gorman
2009-11-12 19:30 ` [PATCH 1/5] page allocator: Always wake kswapd when restarting an allocation attempt after direct reclaim failed Mel Gorman
2009-11-13 5:23 ` KOSAKI Motohiro
2009-11-13 13:55 ` Mel Gorman
2009-11-12 19:30 ` [PATCH 2/5] page allocator: Do not allow interrupts to use ALLOC_HARDER Mel Gorman
[not found] ` <1258054235-3208-3-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 5:24 ` KOSAKI Motohiro
2009-11-13 13:56 ` Mel Gorman
2009-11-12 19:30 ` [PATCH 3/5] page allocator: Wait on both sync and async congestion after direct reclaim Mel Gorman
[not found] ` <1258054235-3208-4-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 11:20 ` KOSAKI Motohiro
[not found] ` <20091113142526.33B3.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-13 11:55 ` Jens Axboe
[not found] ` <20091113115558.GY8742-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2009-11-13 12:28 ` Mel Gorman
[not found] ` <20091113122821.GC29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 13:32 ` Jens Axboe
[not found] ` <20091113133211.GA8742-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2009-11-13 13:41 ` Pekka Enberg
2009-11-13 15:22 ` Chris Mason
2009-11-13 14:16 ` Mel Gorman
2009-11-20 14:56 ` Mel Gorman
2009-11-12 19:30 ` [PATCH 4/5] vmscan: Have kswapd sleep for a short interval and double check it should be asleep Mel Gorman
2009-11-13 10:43 ` KOSAKI Motohiro
[not found] ` <20091113142558.33B6.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-13 14:13 ` Mel Gorman
2009-11-13 18:00 ` KOSAKI Motohiro
[not found] ` <20091114023901.3DA8.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-13 18:17 ` Mel Gorman
[not found] ` <20091113181740.GN29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-14 9:34 ` KOSAKI Motohiro
[not found] ` <2f11576a0911140134u21eafa83t9642bb25ccd953de-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-11-14 15:46 ` Mel Gorman
[not found] ` <20091114154636.GR29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-17 11:03 ` KOSAKI Motohiro
[not found] ` <20091117141638.3DCB.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-17 11:44 ` Mel Gorman
2009-11-17 12:18 ` KOSAKI Motohiro
2009-11-17 12:25 ` Mel Gorman
[not found] ` <20091117122555.GZ29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-18 5:20 ` KOSAKI Motohiro
2009-11-17 10:34 ` [PATCH] vmscan: Have kswapd sleep for a short interval and double check it should be asleep fix 1 Mel Gorman
2009-11-18 5:27 ` KOSAKI Motohiro
2009-11-12 19:30 ` [PATCH 5/5] vmscan: Take order into consideration when deciding if kswapd is in trouble Mel Gorman
2009-11-13 9:54 ` KOSAKI Motohiro
[not found] ` <20091113142608.33B9.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-13 13:54 ` Mel Gorman
[not found] ` <20091113135443.GF29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 14:48 ` Minchan Kim
2009-11-13 18:00 ` KOSAKI Motohiro
[not found] ` <20091114023138.3DA5.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2009-11-13 18:15 ` [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met Mel Gorman
2009-11-13 18:26 ` Frans Pop
[not found] ` <20091113181557.GM29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 18:33 ` KOSAKI Motohiro
[not found] ` <2f11576a0911131033w4a9e6042k3349f0be290a167e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-11-13 20:03 ` [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met V2 Mel Gorman
[not found] ` <20091113200357.GO29804-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-26 14:45 ` Tobias Oetiker
[not found] ` <alpine.DEB.2.00.0911261542500.21450-EjsAmf5DE5zIvOfxy3zmAzgUDZmNtoG9@public.gmane.org>
2009-11-29 7:42 ` still getting allocation failures (was Re: [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met V2) Tobi Oetiker
2009-12-02 11:32 ` Mel Gorman
2009-12-02 21:30 ` Tobias Oetiker
[not found] ` <alpine.DEB.2.00.0912022210220.30023-EjsAmf5DE5zIvOfxy3zmAzgUDZmNtoG9@public.gmane.org>
2009-12-03 20:26 ` Corrado Zoccolo
[not found] ` <4e5e476b0912031226i5b0e6cf9hdfd5519182ccdefa-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-14 5:59 ` Tobias Oetiker
[not found] ` <alpine.DEB.2.00.0912140646550.12657-EjsAmf5DE5zIvOfxy3zmAzgUDZmNtoG9@public.gmane.org>
2009-12-14 8:49 ` Corrado Zoccolo [this message]
2009-11-13 18:36 ` [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met Rik van Riel
2009-11-13 14:38 ` [PATCH 5/5] vmscan: Take order into consideration when deciding if kswapd is in trouble Minchan Kim
[not found] ` <1258054235-3208-6-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 12:41 ` Minchan Kim
[not found] ` <1258054235-3208-1-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-13 9:04 ` [PATCH 0/5] Reduce GFP_ATOMIC allocation failures, candidate fix V3 Frans Pop
[not found] ` <200911131004.25293.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-16 17:57 ` Mel Gorman
2009-11-13 12:47 ` Tobias Oetiker
[not found] ` <alpine.DEB.2.00.0911131346560.22447-ZxOFkyelvri73kmZFr1Urg@public.gmane.org>
2009-11-13 13:37 ` Mel Gorman
2009-11-15 12:07 ` Karol Lewandowski
[not found] ` <20091115120721.GA7557-nLtalAL5mPp2RxbNQum0x1nzlInOXLuq@public.gmane.org>
2009-11-16 9:52 ` Mel Gorman
2009-11-16 12:08 ` Karol Lewandowski
[not found] ` <20091116120845.GA10115-nLtalAL5mPp2RxbNQum0x1nzlInOXLuq@public.gmane.org>
2009-11-16 14:32 ` Karol Lewandowski
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