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From: Christoph Lameter <cl@linux-foundation.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Wu Fengguang <fengguang.wu@intel.com>,
	David Rientjes <rientjes@google.com>,
	Rik van Riel <riel@redhat.com>,
	Hugh Dickins <hugh.dickins@tiscali.co.uk>
Subject: Re: [PATCH 5/5] add shmem vmstat
Date: Thu, 9 Jul 2009 16:46:36 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.1.10.0907091643240.17835@gentwo.org> (raw)
In-Reply-To: <20090709171452.23C9.A69D9226@jp.fujitsu.com>

On Thu, 9 Jul 2009, KOSAKI Motohiro wrote:

> Recently, We faced several OOM problem by plenty GEM cache. and generally,
> plenty Shmem/Tmpfs potentially makes memory shortage problem.

"
Recently we encountered OOM problems due to memory use of the GEM cache.
Generally a large amuont of Shmem/Tmpfs pages tend to create a memory
shortage problem.
"

> We often use following calculation to know shmem pages,
>   shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES
> but it is wrong expression. it doesn't consider isolated page and
> mlocked page.

"
We often use the following calculation to determine the amount of shmem
pages:

shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES

however the expression does not consider isoalted and mlocked pages.
"

> Then, This patch make explicit Shmem/Tmpfs vm-stat accounting.

"
This patch adds explicit accounting for pages used by shmem and tmpfs.
"

Reviewed-by: Christoph Lameter <cl@linux-foundation.org>


WARNING: multiple messages have this Message-ID (diff)
From: Christoph Lameter <cl@linux-foundation.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Wu Fengguang <fengguang.wu@intel.com>,
	David Rientjes <rientjes@google.com>,
	Rik van Riel <riel@redhat.com>,
	Hugh Dickins <hugh.dickins@tiscali.co.uk>
Subject: Re: [PATCH 5/5] add shmem vmstat
Date: Thu, 9 Jul 2009 16:46:36 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.1.10.0907091643240.17835@gentwo.org> (raw)
In-Reply-To: <20090709171452.23C9.A69D9226@jp.fujitsu.com>

On Thu, 9 Jul 2009, KOSAKI Motohiro wrote:

> Recently, We faced several OOM problem by plenty GEM cache. and generally,
> plenty Shmem/Tmpfs potentially makes memory shortage problem.

"
Recently we encountered OOM problems due to memory use of the GEM cache.
Generally a large amuont of Shmem/Tmpfs pages tend to create a memory
shortage problem.
"

> We often use following calculation to know shmem pages,
>   shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES
> but it is wrong expression. it doesn't consider isolated page and
> mlocked page.

"
We often use the following calculation to determine the amount of shmem
pages:

shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES

however the expression does not consider isoalted and mlocked pages.
"

> Then, This patch make explicit Shmem/Tmpfs vm-stat accounting.

"
This patch adds explicit accounting for pages used by shmem and tmpfs.
"

Reviewed-by: Christoph Lameter <cl@linux-foundation.org>

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  parent reply	other threads:[~2009-07-09 20:46 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-09  8:05 [PATCH 0/5] OOM analysis helper patch series v2 KOSAKI Motohiro
2009-07-09  8:05 ` KOSAKI Motohiro
2009-07-09  8:06 ` [PATCH 1/5][resend] add per-zone statistics to show_free_areas() KOSAKI Motohiro
2009-07-09  8:06   ` KOSAKI Motohiro
2009-07-09 10:14   ` Minchan Kim
2009-07-09 10:14     ` Minchan Kim
2009-07-09 14:59   ` Rik van Riel
2009-07-09 14:59     ` Rik van Riel
2009-07-09  8:11 ` [PATCH 2/5] add buffer cache information " KOSAKI Motohiro
2009-07-09  8:11   ` KOSAKI Motohiro
2009-07-09 15:00   ` Rik van Riel
2009-07-09 15:00     ` Rik van Riel
2009-07-09 20:37   ` Christoph Lameter
2009-07-09 20:37     ` Christoph Lameter
2009-07-09 23:39     ` KOSAKI Motohiro
2009-07-09 23:39       ` KOSAKI Motohiro
2009-07-09  8:12 ` [PATCH 3/5][resend] Show kernel stack usage to /proc/meminfo and OOM log KOSAKI Motohiro
2009-07-09  8:12   ` KOSAKI Motohiro
2009-07-09 10:20   ` Minchan Kim
2009-07-09 10:20     ` Minchan Kim
2009-07-09 15:01   ` Rik van Riel
2009-07-09 15:01     ` Rik van Riel
2009-07-09 20:38   ` Christoph Lameter
2009-07-09 20:38     ` Christoph Lameter
2009-07-09  8:14 ` [PATCH 4/5] add isolate pages vmstat KOSAKI Motohiro
2009-07-09  8:14   ` KOSAKI Motohiro
2009-07-09 10:22   ` Minchan Kim
2009-07-09 10:22     ` Minchan Kim
2009-07-09 20:43   ` Christoph Lameter
2009-07-09 20:43     ` Christoph Lameter
2009-07-10  2:11     ` KOSAKI Motohiro
2009-07-10  2:11       ` KOSAKI Motohiro
2009-07-10 18:48       ` Christoph Lameter
2009-07-10 18:48         ` Christoph Lameter
2009-07-13  1:50         ` KOSAKI Motohiro
2009-07-13  1:50           ` KOSAKI Motohiro
2009-07-09  8:18 ` [PATCH 5/5] add shmem vmstat KOSAKI Motohiro
2009-07-09  8:18   ` KOSAKI Motohiro
2009-07-09 15:03   ` Rik van Riel
2009-07-09 15:03     ` Rik van Riel
2009-07-09 20:46   ` Christoph Lameter [this message]
2009-07-09 20:46     ` Christoph Lameter
2009-07-10  1:23   ` Wu Fengguang
2009-07-10  1:23     ` Wu Fengguang
2009-07-09 10:41 ` [PATCH 0/5] OOM analysis helper patch series v2 Minchan Kim
2009-07-09 10:41   ` Minchan Kim
2009-07-09 17:51 ` Li, Ming Chun
2009-07-09 22:05   ` Li, Ming Chun
2009-07-09 23:35     ` KOSAKI Motohiro
2009-07-10  2:17       ` KOSAKI Motohiro
2009-07-10 16:54         ` Li, Ming Chun

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