From: Rik van Riel <riel@redhat.com>
To: David Howells <dhowells@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Minchan Kim <minchan.kim@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Lameter <cl@linux-foundation.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"tytso@mit.edu" <tytso@mit.edu>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"elladan@eskimo.com" <elladan@eskimo.com>,
"npiggin@suse.de" <npiggin@suse.de>,
"Barnes, Jesse" <jesse.barnes@intel.com>
Subject: Re: [PATCH] mm: count only reclaimable lru pages
Date: Thu, 16 Jul 2009 12:24:52 -0400 [thread overview]
Message-ID: <4A5F5454.8070300@redhat.com> (raw)
In-Reply-To: <4987.1247760908@redhat.com>
David Howells wrote:
> Wu Fengguang <fengguang.wu@intel.com> wrote:
>
>> It can greatly (and correctly) increase the slab scan rate under high memory
>> pressure (when most file pages have been reclaimed and swap is full/absent),
>> thus avoid possible false OOM kills.
>
> I applied this to my test machine's kernel and rebooted. It hit the OOM
> killer a few seconds after starting msgctl11 . Furthermore, it was not then
> responsive to SysRq+b or anything else and had to have the magic button
> pushed.
It's part of a series of patches, including the three
posted by Kosaki-san last night (to track the number
of isolated pages) and the patch I posted last night
(to throttle reclaim when too many pages are isolated).
--
All rights reversed.
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: David Howells <dhowells@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Minchan Kim <minchan.kim@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Lameter <cl@linux-foundation.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"tytso@mit.edu" <tytso@mit.edu>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"elladan@eskimo.com" <elladan@eskimo.com>,
"npiggin@suse.de" <npiggin@suse.de>,
"Barnes, Jesse" <jesse.barnes@intel.com>
Subject: Re: [PATCH] mm: count only reclaimable lru pages
Date: Thu, 16 Jul 2009 12:24:52 -0400 [thread overview]
Message-ID: <4A5F5454.8070300@redhat.com> (raw)
In-Reply-To: <4987.1247760908@redhat.com>
David Howells wrote:
> Wu Fengguang <fengguang.wu@intel.com> wrote:
>
>> It can greatly (and correctly) increase the slab scan rate under high memory
>> pressure (when most file pages have been reclaimed and swap is full/absent),
>> thus avoid possible false OOM kills.
>
> I applied this to my test machine's kernel and rebooted. It hit the OOM
> killer a few seconds after starting msgctl11 . Furthermore, it was not then
> responsive to SysRq+b or anything else and had to have the magic button
> pushed.
It's part of a series of patches, including the three
posted by Kosaki-san last night (to track the number
of isolated pages) and the patch I posted last night
(to throttle reclaim when too many pages are isolated).
--
All rights reversed.
--
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next prev parent reply other threads:[~2009-07-16 16:25 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-16 13:34 [PATCH] mm: count only reclaimable lru pages Wu Fengguang
2009-07-16 13:34 ` Wu Fengguang
2009-07-16 13:40 ` Peter Zijlstra
2009-07-16 13:40 ` Peter Zijlstra
2009-07-16 13:49 ` Rik van Riel
2009-07-16 13:49 ` Rik van Riel
2009-07-16 14:00 ` Christoph Lameter
2009-07-16 14:00 ` Christoph Lameter
2009-07-16 14:25 ` Wu Fengguang
2009-07-16 14:25 ` Wu Fengguang
2009-07-16 14:28 ` Peter Zijlstra
2009-07-16 14:28 ` Peter Zijlstra
2009-07-16 14:39 ` Christoph Lameter
2009-07-16 14:39 ` Christoph Lameter
2009-07-16 14:42 ` Rik van Riel
2009-07-16 14:42 ` Rik van Riel
2009-07-16 15:09 ` [PATCH] mm: count only reclaimable lru pages v2 Wu Fengguang
2009-07-16 15:09 ` Wu Fengguang
2009-07-16 15:59 ` Johannes Weiner
2009-07-16 15:59 ` Johannes Weiner
2009-07-16 16:21 ` Christoph Lameter
2009-07-16 16:21 ` Christoph Lameter
2009-07-16 23:53 ` KOSAKI Motohiro
2009-07-16 23:53 ` KOSAKI Motohiro
2009-07-16 14:17 ` [PATCH] mm: count only reclaimable lru pages Minchan Kim
2009-07-16 14:17 ` Minchan Kim
2009-07-16 16:15 ` David Howells
2009-07-16 16:15 ` David Howells
2009-07-16 16:24 ` Rik van Riel [this message]
2009-07-16 16:24 ` Rik van Riel
2009-07-16 17:11 ` David Howells
2009-07-16 17:11 ` David Howells
2009-07-16 18:51 ` Li, Ming Chun
2009-07-16 18:51 ` Li, Ming Chun
2009-07-17 4:57 ` KOSAKI Motohiro
2009-07-17 4:57 ` KOSAKI Motohiro
2009-07-17 6:32 ` Li, Ming Chun
2009-07-17 6:32 ` Li, Ming Chun
2009-07-16 16:21 ` Jesse Barnes
2009-07-16 16:21 ` Jesse Barnes
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