From: Rik van Riel <riel@redhat.com>
To: David Rientjes <rientjes@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Nick Piggin <npiggin@suse.de>,
Andrea Arcangeli <aarcange@redhat.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Lubos Lunak <l.lunak@suse.cz>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch 4/7 -mm] oom: badness heuristic rewrite
Date: Wed, 10 Feb 2010 23:10:37 -0500 [thread overview]
Message-ID: <4B73833D.5070008@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1002100228540.8001@chino.kir.corp.google.com>
On 02/10/2010 11:32 AM, David Rientjes wrote:
> OOM_ADJUST_MIN and OOM_ADJUST_MAX have been exported to userspace since
> 2006 via include/linux/oom.h. This alters their values from -16 to -1000
> and from +15 to +1000, respectively.
That seems like a bad idea. Google may have the luxury of
being able to recompile all its in-house applications, but
this will not be true for many other users of /proc/<pid>/oom_adj
> +/*
> + * Tasks that fork a very large number of children with seperate address spaces
> + * may be the result of a bug, user error, or a malicious application. The oom
> + * killer assesses a penalty equaling
It could also be the result of the system getting many client
connections - think of overloaded mail, web or database servers.
--
All rights reversed.
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: David Rientjes <rientjes@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Nick Piggin <npiggin@suse.de>,
Andrea Arcangeli <aarcange@redhat.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Lubos Lunak <l.lunak@suse.cz>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch 4/7 -mm] oom: badness heuristic rewrite
Date: Wed, 10 Feb 2010 23:10:37 -0500 [thread overview]
Message-ID: <4B73833D.5070008@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1002100228540.8001@chino.kir.corp.google.com>
On 02/10/2010 11:32 AM, David Rientjes wrote:
> OOM_ADJUST_MIN and OOM_ADJUST_MAX have been exported to userspace since
> 2006 via include/linux/oom.h. This alters their values from -16 to -1000
> and from +15 to +1000, respectively.
That seems like a bad idea. Google may have the luxury of
being able to recompile all its in-house applications, but
this will not be true for many other users of /proc/<pid>/oom_adj
> +/*
> + * Tasks that fork a very large number of children with seperate address spaces
> + * may be the result of a bug, user error, or a malicious application. The oom
> + * killer assesses a penalty equaling
It could also be the result of the system getting many client
connections - think of overloaded mail, web or database servers.
--
All rights reversed.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-02-11 4:11 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-10 16:32 [patch 0/7 -mm] oom killer rewrite David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-10 16:32 ` [patch 1/7 -mm] oom: filter tasks not sharing the same cpuset David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-10 17:08 ` Rik van Riel
2010-02-10 17:08 ` Rik van Riel
2010-02-11 23:52 ` KAMEZAWA Hiroyuki
2010-02-11 23:52 ` KAMEZAWA Hiroyuki
2010-02-15 2:56 ` KOSAKI Motohiro
2010-02-15 2:56 ` KOSAKI Motohiro
2010-02-15 22:06 ` David Rientjes
2010-02-15 22:06 ` David Rientjes
2010-02-16 4:52 ` KOSAKI Motohiro
2010-02-16 4:52 ` KOSAKI Motohiro
2010-02-16 6:01 ` KOSAKI Motohiro
2010-02-16 6:01 ` KOSAKI Motohiro
2010-02-16 7:03 ` Nick Piggin
2010-02-16 7:03 ` Nick Piggin
2010-02-16 8:49 ` David Rientjes
2010-02-16 8:49 ` David Rientjes
2010-02-16 9:04 ` Nick Piggin
2010-02-16 9:04 ` Nick Piggin
2010-02-16 9:10 ` David Rientjes
2010-02-16 9:10 ` David Rientjes
2010-02-16 8:46 ` David Rientjes
2010-02-16 8:46 ` David Rientjes
2010-02-10 16:32 ` [patch 2/7 -mm] oom: sacrifice child with highest badness score for parent David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-10 20:52 ` Rik van Riel
2010-02-10 20:52 ` Rik van Riel
2010-02-12 0:00 ` KAMEZAWA Hiroyuki
2010-02-12 0:00 ` KAMEZAWA Hiroyuki
2010-02-12 0:15 ` David Rientjes
2010-02-12 0:15 ` David Rientjes
2010-02-13 2:49 ` Minchan Kim
2010-02-13 2:49 ` Minchan Kim
2010-02-15 3:08 ` KOSAKI Motohiro
2010-02-15 3:08 ` KOSAKI Motohiro
2010-02-10 16:32 ` [patch 3/7 -mm] oom: select task from tasklist for mempolicy ooms David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-10 22:47 ` Rik van Riel
2010-02-10 22:47 ` Rik van Riel
2010-02-15 5:03 ` KOSAKI Motohiro
2010-02-15 5:03 ` KOSAKI Motohiro
2010-02-15 22:11 ` David Rientjes
2010-02-15 22:11 ` David Rientjes
2010-02-16 5:15 ` KOSAKI Motohiro
2010-02-16 5:15 ` KOSAKI Motohiro
2010-02-16 21:52 ` David Rientjes
2010-02-16 21:52 ` David Rientjes
2010-02-17 0:48 ` David Rientjes
2010-02-17 0:48 ` David Rientjes
2010-02-17 1:13 ` KOSAKI Motohiro
2010-02-17 1:13 ` KOSAKI Motohiro
2010-02-10 16:32 ` [patch 4/7 -mm] oom: badness heuristic rewrite David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-11 4:10 ` Rik van Riel [this message]
2010-02-11 4:10 ` Rik van Riel
2010-02-11 9:14 ` David Rientjes
2010-02-11 9:14 ` David Rientjes
2010-02-11 15:07 ` Nick Bowler
2010-02-11 15:07 ` Nick Bowler
2010-02-11 21:01 ` David Rientjes
2010-02-11 21:01 ` David Rientjes
2010-02-11 21:43 ` Andrew Morton
2010-02-11 21:43 ` Andrew Morton
2010-02-11 21:51 ` David Rientjes
2010-02-11 21:51 ` David Rientjes
2010-02-11 22:31 ` Andrew Morton
2010-02-11 22:31 ` Andrew Morton
2010-02-11 22:42 ` David Rientjes
2010-02-11 22:42 ` David Rientjes
2010-02-11 23:11 ` Andrew Morton
2010-02-11 23:11 ` Andrew Morton
2010-02-11 23:31 ` David Rientjes
2010-02-11 23:31 ` David Rientjes
2010-02-11 23:37 ` Andrew Morton
2010-02-11 23:37 ` Andrew Morton
2010-02-12 13:56 ` Minchan Kim
2010-02-12 13:56 ` Minchan Kim
2010-02-12 21:00 ` David Rientjes
2010-02-12 21:00 ` David Rientjes
2010-02-13 2:45 ` Minchan Kim
2010-02-13 2:45 ` Minchan Kim
2010-02-15 21:54 ` David Rientjes
2010-02-15 21:54 ` David Rientjes
2010-02-16 13:14 ` Minchan Kim
2010-02-16 13:14 ` Minchan Kim
2010-02-16 21:41 ` David Rientjes
2010-02-16 21:41 ` David Rientjes
2010-02-17 7:41 ` Minchan Kim
2010-02-17 7:41 ` Minchan Kim
2010-02-17 9:23 ` David Rientjes
2010-02-17 9:23 ` David Rientjes
2010-02-17 13:08 ` Minchan Kim
2010-02-17 13:08 ` Minchan Kim
2010-02-15 8:05 ` KOSAKI Motohiro
2010-02-15 8:05 ` KOSAKI Motohiro
2010-02-10 16:32 ` [patch 5/7 -mm] oom: replace sysctls with quick mode David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-12 0:26 ` KAMEZAWA Hiroyuki
2010-02-12 0:26 ` KAMEZAWA Hiroyuki
2010-02-12 9:58 ` David Rientjes
2010-02-12 9:58 ` David Rientjes
2010-02-15 8:09 ` KOSAKI Motohiro
2010-02-15 8:09 ` KOSAKI Motohiro
2010-02-15 22:15 ` David Rientjes
2010-02-15 22:15 ` David Rientjes
2010-02-16 5:25 ` KOSAKI Motohiro
2010-02-16 5:25 ` KOSAKI Motohiro
2010-02-16 9:04 ` David Rientjes
2010-02-16 9:04 ` David Rientjes
2010-02-10 16:32 ` [patch 6/7 -mm] oom: avoid oom killer for lowmem allocations David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-11 4:13 ` Rik van Riel
2010-02-11 4:13 ` Rik van Riel
2010-02-11 9:19 ` David Rientjes
2010-02-11 9:19 ` David Rientjes
2010-02-11 14:08 ` Rik van Riel
2010-02-11 14:08 ` Rik van Riel
2010-02-12 1:28 ` KAMEZAWA Hiroyuki
2010-02-12 1:28 ` KAMEZAWA Hiroyuki
2010-02-12 10:06 ` David Rientjes
2010-02-12 10:06 ` David Rientjes
2010-02-15 0:09 ` KAMEZAWA Hiroyuki
2010-02-15 0:09 ` KAMEZAWA Hiroyuki
2010-02-15 22:01 ` David Rientjes
2010-02-15 22:01 ` David Rientjes
2010-02-15 8:29 ` KOSAKI Motohiro
2010-02-15 8:29 ` KOSAKI Motohiro
2010-02-10 16:32 ` [patch 7/7 -mm] oom: remove unnecessary code and cleanup David Rientjes
2010-02-10 16:32 ` David Rientjes
2010-02-12 0:12 ` KAMEZAWA Hiroyuki
2010-02-12 0:12 ` KAMEZAWA Hiroyuki
2010-02-12 0:21 ` David Rientjes
2010-02-12 0:21 ` David Rientjes
2010-02-15 8:31 ` KOSAKI Motohiro
2010-02-15 8:31 ` KOSAKI Motohiro
2010-02-15 2:51 ` [patch 0/7 -mm] oom killer rewrite KOSAKI Motohiro
2010-02-15 2:51 ` KOSAKI Motohiro
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4B73833D.5070008@redhat.com \
--to=riel@redhat.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=balbir@linux.vnet.ibm.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=l.lunak@suse.cz \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=npiggin@suse.de \
--cc=rientjes@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.