From: Rik van Riel <riel@redhat.com>
To: Lubos Lunak <l.lunak@suse.cz>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Nick Piggin <npiggin@suse.de>, Jiri Kosina <jkosina@suse.cz>
Subject: Re: Improving OOM killer
Date: Wed, 03 Feb 2010 09:49:18 -0500 [thread overview]
Message-ID: <4B698CEE.5020806@redhat.com> (raw)
In-Reply-To: <201002012302.37380.l.lunak@suse.cz>
On 02/01/2010 05:02 PM, Lubos Lunak wrote:
> In other words, use VmRSS for measuring memory usage instead of VmSize, and
> remove child accumulating.
I agree with removing the child accumulating code. That code can
do a lot of harm with databases like postgresql, or cause the
system's main service (eg. httpd) to be killed when a broken cgi
script used up too much memory.
IIRC the child accumulating code was introduced to deal with
malicious code (fork bombs), but it makes things worse for the
(much more common) situation of a system without malicious
code simply running out of memory due to being very busy.
I have no strong opinion on using RSS vs VmSize.
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next prev parent reply other threads:[~2010-02-03 14:49 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-01 22:02 Improving OOM killer Lubos Lunak
2010-02-01 23:53 ` David Rientjes
2010-02-02 21:10 ` Lubos Lunak
2010-02-03 1:41 ` David Rientjes
2010-02-03 1:52 ` KAMEZAWA Hiroyuki
2010-02-03 2:12 ` David Rientjes
2010-02-03 2:12 ` KAMEZAWA Hiroyuki
2010-02-03 2:36 ` [patch] sysctl: clean up vm related variable declarations David Rientjes
2010-02-03 8:07 ` KOSAKI Motohiro
2010-02-03 8:17 ` Balbir Singh
2010-02-03 22:54 ` Improving OOM killer Lubos Lunak
2010-02-04 0:00 ` David Rientjes
2010-02-03 7:50 ` KOSAKI Motohiro
2010-02-03 9:40 ` David Rientjes
2010-02-03 8:57 ` Balbir Singh
2010-02-03 12:10 ` Lubos Lunak
2010-02-03 12:25 ` Balbir Singh
2010-02-03 15:00 ` Minchan Kim
2010-02-03 16:06 ` Minchan Kim
2010-02-03 21:22 ` Lubos Lunak
2010-02-03 14:49 ` Rik van Riel [this message]
2010-02-03 17:01 ` Balbir Singh
2010-02-03 18:58 ` David Rientjes
2010-02-03 19:29 ` Frans Pop
2010-02-03 19:52 ` David Rientjes
2010-02-03 20:12 ` Frans Pop
2010-02-03 20:26 ` David Rientjes
2010-02-03 22:55 ` Lubos Lunak
2010-02-04 0:05 ` David Rientjes
2010-02-04 0:18 ` Rik van Riel
2010-02-04 21:48 ` David Rientjes
2010-02-04 22:06 ` Rik van Riel
2010-02-04 22:14 ` David Rientjes
2010-02-10 20:54 ` Lubos Lunak
2010-02-10 21:10 ` Rik van Riel
2010-02-10 21:29 ` Lubos Lunak
2010-02-10 22:18 ` Alan Cox
2010-02-10 22:31 ` David Rientjes
2010-02-11 9:50 ` Lubos Lunak
2010-02-04 22:31 ` Frans Pop
2010-02-04 22:53 ` David Rientjes
2010-02-04 7:58 ` Lubos Lunak
2010-02-04 21:34 ` David Rientjes
2010-02-10 20:54 ` Lubos Lunak
2010-02-10 21:09 ` Rik van Riel
2010-02-10 21:34 ` Lubos Lunak
2010-02-10 22:25 ` David Rientjes
2010-02-11 10:16 ` Lubos Lunak
2010-02-11 21:17 ` David Rientjes
2010-02-04 9:50 ` Jiri Kosina
2010-02-04 21:39 ` David Rientjes
2010-02-05 7:35 ` Oliver Neukum
2010-02-10 3:10 ` David Rientjes
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