From: Pekka Enberg <penberg@kernel.org>
To: Christoph Lameter <cl@linux.com>
Cc: Mikael Abrahamsson <swmike@swm.pp.se>,
Stan Hoeppner <stan@hardwarefreak.com>,
Linux Kernel List <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Mel Gorman <mel@csn.ul.ie>
Subject: Re: 2.6.34.1 page allocation failure
Date: Mon, 23 Aug 2010 12:37:05 +0300 [thread overview]
Message-ID: <4C724141.8060000@kernel.org> (raw)
In-Reply-To: <alpine.DEB.2.00.1008221734410.21916@router.home>
On 8/23/10 1:40 AM, Christoph Lameter wrote:
> On Sun, 22 Aug 2010, Pekka Enberg wrote:
>
>> In Stan's case, it's a order-1 GFP_ATOMIC allocation but there are
>> only order-0 pages available. Mel, any recent page allocator fixes in
>> 2.6.35 or 2.6.36-rc1 that Stan/Mikael should test?
> This is the TCP slab? Best fix would be in the page allocator. However,
> in this particular case the slub allocator would be able to fall back to
> an order 0 allocation and still satisfy the request.
>
Looking at the stack trace of the oops, I think Stan has CONFIG_SLAB
which doesn't have order-0 fallback.
WARNING: multiple messages have this Message-ID (diff)
From: Pekka Enberg <penberg@kernel.org>
To: Christoph Lameter <cl@linux.com>
Cc: Mikael Abrahamsson <swmike@swm.pp.se>,
Stan Hoeppner <stan@hardwarefreak.com>,
Linux Kernel List <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Mel Gorman <mel@csn.ul.ie>
Subject: Re: 2.6.34.1 page allocation failure
Date: Mon, 23 Aug 2010 12:37:05 +0300 [thread overview]
Message-ID: <4C724141.8060000@kernel.org> (raw)
In-Reply-To: <alpine.DEB.2.00.1008221734410.21916@router.home>
On 8/23/10 1:40 AM, Christoph Lameter wrote:
> On Sun, 22 Aug 2010, Pekka Enberg wrote:
>
>> In Stan's case, it's a order-1 GFP_ATOMIC allocation but there are
>> only order-0 pages available. Mel, any recent page allocator fixes in
>> 2.6.35 or 2.6.36-rc1 that Stan/Mikael should test?
> This is the TCP slab? Best fix would be in the page allocator. However,
> in this particular case the slub allocator would be able to fall back to
> an order 0 allocation and still satisfy the request.
>
Looking at the stack trace of the oops, I think Stan has CONFIG_SLAB
which doesn't have order-0 fallback.
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next prev parent reply other threads:[~2010-08-23 9:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-22 6:13 2.6.34.1 page allocation failure Stan Hoeppner
2010-08-22 6:47 ` Mikael Abrahamsson
2010-08-22 6:47 ` Mikael Abrahamsson
2010-08-22 19:51 ` Pekka Enberg
2010-08-22 19:51 ` Pekka Enberg
2010-08-22 22:40 ` Christoph Lameter
2010-08-22 22:40 ` Christoph Lameter
2010-08-23 9:37 ` Pekka Enberg [this message]
2010-08-23 9:37 ` Pekka Enberg
2010-08-23 22:35 ` Stan Hoeppner
2010-08-23 22:35 ` Stan Hoeppner
2010-08-24 17:13 ` Christoph Lameter
2010-08-24 17:13 ` Christoph Lameter
2010-08-24 18:03 ` Pekka Enberg
2010-08-24 18:03 ` Pekka Enberg
2010-08-24 19:08 ` Stan Hoeppner
2010-08-24 19:08 ` Stan Hoeppner
2010-08-24 19:21 ` Mikael Abrahamsson
2010-08-24 19:21 ` Mikael Abrahamsson
2010-08-29 10:49 ` Pekka Enberg
2010-08-29 10:49 ` Pekka Enberg
2010-08-29 12:38 ` Mikael Abrahamsson
2010-08-29 12:38 ` Mikael Abrahamsson
2010-08-29 13:17 ` Pekka Enberg
2010-08-29 13:17 ` Pekka Enberg
2010-08-29 15:37 ` Mikael Abrahamsson
2010-08-29 15:37 ` Mikael Abrahamsson
2010-08-31 20:28 ` Mikael Abrahamsson
2010-08-31 20:28 ` Mikael Abrahamsson
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