linux-kernel - Re: OOM-killer and strange RSS value in 3.9-rc7

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Message-ID: <517B8A5D.1030308@gmail.com>
Date:	Sat, 27 Apr 2013 16:20:45 +0800
From:	Will Huck <will.huckk@...il.com>
To:	Christoph Lameter <cl@...ux.com>
CC:	Han Pingtian <hanpt@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, mhocko@...e.cz,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org
Subject: Re: OOM-killer and strange RSS value in 3.9-rc7

Hi Christoph,
On 04/26/2013 01:17 AM, Christoph Lameter wrote:
> On Thu, 25 Apr 2013, Han Pingtian wrote:
>
>> I have enabled "slub_debug" and here is the
>> /sys/kernel/slab/kmalloc-512/alloc_calls contents:
>>
>>       50 .__alloc_workqueue_key+0x90/0x5d0 age=113630/116957/119419 pid=1-1730 cpus=0,6-8,13,24,26,44,53,57,60,68 nodes=1
>>       11 .__alloc_workqueue_key+0x16c/0x5d0 age=113814/116733/119419 pid=1-1730 cpus=0,44,68 nodes=1
>>       13 .add_sysfs_param.isra.2+0x80/0x210 age=115175/117994/118779 pid=1-1342 cpus=0,8,12,24,60 nodes=1
>>      160 .build_sched_domains+0x108/0xe30 age=119111/119120/119131 pid=1 cpus=0 nodes=1
>>     9000 .alloc_fair_sched_group+0xe4/0x220 age=110549/114471/117357 pid=1-2290 cpus=0-1,5,9-11,13,24,29,33,36,38,40-41,45,48-50,53,56-58,60-63,68-69,72-73,76-77,79 nodes=1
>>     9000 .alloc_fair_sched_group+0x114/0x220 age=110549/114471/117357 pid=1-2290 cpus=0-1,5,9-11,13,24,29,33,36,38,40-41,45,48-50,53,56-58,60-63,68-69,72-73,76-77,79 nodes=1

Could you explain the meaning of  age=xx/xx/xx  pid=xx-xx cpus=xx here?

> ?? Is that normal to have that amount of sched group allocations?
>
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