From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>,
stable@kernel.org, linux-kernel@vger.kernel.org, " <rjw@sisk.pl>,
Kernel Testers List <kernel-testers@vger.kernel.org>"@redhat.com
Subject: Re: [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit
Date: Tue, 27 Oct 2009 14:18:34 -0400 [thread overview]
Message-ID: <4AE7397A.4010907@redhat.com> (raw)
In-Reply-To: <1256650833-15516-4-git-send-email-mel@csn.ul.ie>
On 10/27/2009 09:40 AM, Mel Gorman wrote:
> When a high-order allocation fails, kswapd is kicked so that it reclaims
> at a higher-order to avoid direct reclaimers stall and to help GFP_ATOMIC
> allocations. Something has changed in recent kernels that affect the timing
> where high-order GFP_ATOMIC allocations are now failing with more frequency,
> particularly under pressure. This patch forces kswapd to notice sooner that
> high-order allocations are occuring.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>
Reviewed-by: Rik van Riel <riel@redhat.com>
--
All rights reversed.
next prev parent reply other threads:[~2009-10-27 18:20 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-27 13:40 [PATCH 0/3] Reduce GFP_ATOMIC allocation failures, partial fix V3 Mel Gorman
2009-10-27 13:40 ` Mel Gorman
2009-10-27 13:40 ` [PATCH 2/3] page allocator: Do not allow interrupts to use ALLOC_HARDER Mel Gorman
2009-10-27 13:40 ` Mel Gorman
[not found] ` <1256650833-15516-3-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 20:09 ` Andrew Morton
2009-10-27 20:09 ` Andrew Morton
2009-10-27 20:09 ` Andrew Morton
[not found] ` <20091027130924.fa903f5a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-10-27 21:12 ` David Rientjes
2009-10-27 21:12 ` David Rientjes
2009-10-27 21:12 ` David Rientjes
[not found] ` <alpine.DEB.2.00.0910271411530.9183-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2009-10-31 18:40 ` Pavel Machek
2009-10-31 18:40 ` Pavel Machek
2009-10-31 18:40 ` Pavel Machek
2009-10-31 19:51 ` David Rientjes
2009-10-31 19:51 ` David Rientjes
2009-10-31 20:11 ` Pavel Machek
2009-10-31 20:11 ` Pavel Machek
[not found] ` <20091031201158.GB29536-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-10-31 21:19 ` David Rientjes
2009-10-31 21:19 ` David Rientjes
2009-10-31 21:19 ` David Rientjes
2009-10-31 22:29 ` Pavel Machek
2009-10-31 22:29 ` Pavel Machek
2009-10-31 22:55 ` Rik van Riel
2009-10-31 22:55 ` Rik van Riel
[not found] ` <4AECC04B.9060808-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-11-01 7:35 ` Pavel Machek
2009-11-01 7:35 ` Pavel Machek
2009-11-01 7:35 ` Pavel Machek
[not found] ` <20091101073527.GB32720-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-11-01 12:37 ` KOSAKI Motohiro
2009-11-01 12:37 ` KOSAKI Motohiro
2009-11-01 12:37 ` KOSAKI Motohiro
2009-11-01 14:44 ` Rik van Riel
2009-11-01 14:44 ` Rik van Riel
[not found] ` <4AED9EB4.5080601-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-11-01 19:32 ` Pavel Machek
2009-11-01 19:32 ` Pavel Machek
2009-11-01 19:32 ` Pavel Machek
2009-11-02 16:38 ` Christoph Lameter
2009-11-02 16:38 ` Christoph Lameter
2009-10-31 23:59 ` Rik van Riel
2009-10-31 23:59 ` Rik van Riel
2009-11-02 16:42 ` Christoph Lameter
2009-11-02 16:42 ` Christoph Lameter
2009-11-02 20:53 ` David Rientjes
2009-11-02 20:53 ` David Rientjes
2009-11-02 20:53 ` David Rientjes
2009-11-03 17:10 ` Christoph Lameter
2009-11-03 17:10 ` Christoph Lameter
2009-11-04 1:46 ` David Rientjes
2009-11-04 1:46 ` David Rientjes
2009-11-04 1:46 ` David Rientjes
[not found] ` <alpine.DEB.2.00.0911031739380.1187-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2009-11-04 9:01 ` Pavel Machek
2009-11-04 9:01 ` Pavel Machek
2009-11-04 9:01 ` Pavel Machek
[not found] ` <20091104090140.GA14694-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-11-09 10:11 ` Mel Gorman
2009-11-09 10:11 ` Mel Gorman
2009-11-09 10:11 ` Mel Gorman
2009-10-28 10:24 ` Mel Gorman
2009-10-28 10:24 ` Mel Gorman
2009-10-27 13:40 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit Mel Gorman
2009-10-27 13:40 ` Mel Gorman
[not found] ` <1256650833-15516-4-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 18:18 ` Rik van Riel
2009-10-27 18:18 ` Rik van Riel
2009-10-27 18:18 ` Rik van Riel [this message]
2009-10-27 20:19 ` Andrew Morton
2009-10-27 20:19 ` Andrew Morton
[not found] ` <20091027131905.410ec04a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-10-28 3:54 ` KOSAKI Motohiro
2009-10-28 3:54 ` KOSAKI Motohiro
2009-10-28 3:54 ` KOSAKI Motohiro
2009-10-28 10:29 ` Mel Gorman
2009-10-28 10:29 ` Mel Gorman
2009-10-28 10:29 ` Mel Gorman
2009-10-28 19:47 ` Andrew Morton
2009-10-28 19:47 ` Andrew Morton
[not found] ` <20091028124756.7af44b6b.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-11-02 16:05 ` Mel Gorman
2009-11-02 16:05 ` Mel Gorman
2009-11-02 16:05 ` Mel Gorman
2009-11-02 17:32 ` Frans Pop
2009-11-02 17:32 ` Frans Pop
[not found] ` <200911021832.59035.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-02 17:38 ` Mel Gorman
2009-11-02 17:38 ` Mel Gorman
2009-11-02 17:38 ` Mel Gorman
2009-11-02 20:36 ` Mel Gorman
2009-11-02 20:36 ` Mel Gorman
2009-11-03 22:01 ` Frans Pop
[not found] ` <200911032301.59662.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-03 22:08 ` Mel Gorman
2009-11-03 22:08 ` Mel Gorman
2009-11-03 22:08 ` Mel Gorman
2009-11-04 0:01 ` Frans Pop
2009-11-04 1:18 ` Mel Gorman
2009-11-04 1:18 ` Mel Gorman
[not found] ` <20091104011811.GG22046-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-04 2:05 ` Frans Pop
2009-11-04 2:05 ` Frans Pop
2009-11-04 2:05 ` Frans Pop
2009-11-04 2:08 ` Frans Pop
2009-11-04 2:08 ` Frans Pop
[not found] ` <200911040305.59352.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-04 15:48 ` Mel Gorman
2009-11-04 15:48 ` Mel Gorman
2009-11-04 15:48 ` Mel Gorman
[not found] ` <20091104154853.GM22046-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-04 20:57 ` Frans Pop
2009-11-04 20:57 ` Frans Pop
2009-11-04 20:57 ` Frans Pop
[not found] ` <200911042157.25020.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-05 16:48 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit (data on latencies available) Mel Gorman
2009-11-05 16:48 ` Mel Gorman
2009-11-05 16:48 ` Mel Gorman
[not found] ` <20091105164832.GB25926-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-12 11:36 ` Frans Pop
2009-11-12 11:36 ` Frans Pop
2009-11-12 11:36 ` Frans Pop
2009-11-04 2:08 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit Mel Gorman
2009-11-04 2:08 ` Mel Gorman
2009-11-04 2:08 ` Mel Gorman
[not found] ` <1256650833-15516-1-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 13:40 ` [PATCH 1/3] page allocator: Always wake kswapd when restarting an allocation attempt after direct reclaim failed Mel Gorman
2009-10-27 13:40 ` Mel Gorman
2009-10-27 13:40 ` Mel Gorman
2009-10-28 13:02 ` [PATCH 0/3] Reduce GFP_ATOMIC allocation failures, partial fix V3 Karol Lewandowski
2009-10-28 13:02 ` Karol Lewandowski
2009-10-28 13:02 ` Karol Lewandowski
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