From: Pavel Machek <pavel@ucw.cz>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Minchan Kim <minchan.kim@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
vedran.furac@gmail.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
rientjes@google.com
Subject: Re: [RFC][PATCH] oom_kill: avoid depends on total_vm and use real RSS/swap value for oom_score (Re: Memory overcommit
Date: Thu, 5 Nov 2009 20:02:03 +0100 [thread overview]
Message-ID: <20091105190203.GA1392@ucw.cz> (raw)
In-Reply-To: <20091027184743.GD5753@random.random>
Hi!
> Agreed it's not obvious. Intuitively I think only including RSS and no
> swap is best, but clearly I can't be entirely against including swap
> too as there may be scenarios where including swap provides for a
> better choice.
>
> My argument for not including swap is that we kill tasks to free RAM
> (we don't really care to free swap, system needs RAM at oom time).
System should be out of _virtual_ memory at that point, so yes,
freeing swap should help, too.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: Pavel Machek <pavel@ucw.cz>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Minchan Kim <minchan.kim@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
vedran.furac@gmail.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
rientjes@google.com
Subject: Re: [RFC][PATCH] oom_kill: avoid depends on total_vm and use real RSS/swap value for oom_score (Re: Memory overcommit
Date: Thu, 5 Nov 2009 20:02:03 +0100 [thread overview]
Message-ID: <20091105190203.GA1392@ucw.cz> (raw)
In-Reply-To: <20091027184743.GD5753@random.random>
Hi!
> Agreed it's not obvious. Intuitively I think only including RSS and no
> swap is best, but clearly I can't be entirely against including swap
> too as there may be scenarios where including swap provides for a
> better choice.
>
> My argument for not including swap is that we kill tasks to free RAM
> (we don't really care to free swap, system needs RAM at oom time).
System should be out of _virtual_ memory at that point, so yes,
freeing swap should help, too.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
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next prev parent reply other threads:[~2009-11-05 19:02 UTC|newest]
Thread overview: 156+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-12 11:51 Memory overcommit Vedran Furač
2009-10-13 3:08 ` KAMEZAWA Hiroyuki
2009-10-13 17:13 ` Vedran Furač
2009-10-14 4:51 ` KAMEZAWA Hiroyuki
2009-10-20 21:52 ` Vedran Furač
2009-10-26 1:55 ` KAMEZAWA Hiroyuki
2009-10-26 16:16 ` Vedran Furač
2009-10-26 16:16 ` Vedran Furač
2009-10-27 3:22 ` KAMEZAWA Hiroyuki
2009-10-27 3:22 ` KAMEZAWA Hiroyuki
2009-10-27 6:10 ` KOSAKI Motohiro
2009-10-27 6:10 ` KOSAKI Motohiro
2009-10-27 6:34 ` Minchan Kim
2009-10-27 6:34 ` Minchan Kim
2009-10-27 6:36 ` KAMEZAWA Hiroyuki
2009-10-27 6:36 ` KAMEZAWA Hiroyuki
2009-10-27 6:55 ` Minchan Kim
2009-10-27 6:55 ` Minchan Kim
2009-10-27 7:45 ` [RFC][PATCH] oom_kill: avoid depends on total_vm and use real RSS/swap value for oom_score (Re: " KAMEZAWA Hiroyuki
2009-10-27 7:45 ` KAMEZAWA Hiroyuki
2009-10-27 7:56 ` Minchan Kim
2009-10-27 7:56 ` Minchan Kim
2009-10-27 12:38 ` Andrea Arcangeli
2009-10-27 12:38 ` Andrea Arcangeli
2009-10-28 0:22 ` KAMEZAWA Hiroyuki
2009-10-28 0:22 ` KAMEZAWA Hiroyuki
2009-10-28 0:45 ` Vedran Furač
2009-10-28 0:45 ` Vedran Furač
2009-10-27 7:56 ` KAMEZAWA Hiroyuki
2009-10-27 7:56 ` KAMEZAWA Hiroyuki
2009-10-27 8:14 ` Minchan Kim
2009-10-27 8:14 ` Minchan Kim
2009-10-27 8:33 ` KAMEZAWA Hiroyuki
2009-10-27 8:33 ` KAMEZAWA Hiroyuki
2009-10-27 8:52 ` Minchan Kim
2009-10-27 8:52 ` Minchan Kim
2009-10-27 8:56 ` KAMEZAWA Hiroyuki
2009-10-27 8:56 ` KAMEZAWA Hiroyuki
2009-10-27 17:41 ` Vedran Furač
2009-10-27 17:41 ` Vedran Furač
2009-10-28 0:13 ` KAMEZAWA Hiroyuki
2009-10-28 0:13 ` KAMEZAWA Hiroyuki
2009-10-27 18:39 ` Hugh Dickins
2009-10-27 18:39 ` Hugh Dickins
2009-10-27 18:47 ` Andrea Arcangeli
2009-10-27 18:47 ` Andrea Arcangeli
2009-10-28 0:32 ` KAMEZAWA Hiroyuki
2009-10-28 0:32 ` KAMEZAWA Hiroyuki
2009-11-05 19:02 ` Pavel Machek [this message]
2009-11-05 19:02 ` Pavel Machek
2009-10-28 0:28 ` KAMEZAWA Hiroyuki
2009-10-28 0:28 ` KAMEZAWA Hiroyuki
2009-10-27 6:46 ` KOSAKI Motohiro
2009-10-27 6:46 ` KOSAKI Motohiro
2009-10-27 6:56 ` Minchan Kim
2009-10-27 6:56 ` Minchan Kim
2009-10-27 17:12 ` Vedran Furač
2009-10-27 17:12 ` Vedran Furač
2009-10-27 18:02 ` KOSAKI Motohiro
2009-10-27 18:30 ` Vedran Furač
2009-10-27 18:30 ` Vedran Furač
2009-10-27 20:44 ` Hugh Dickins
2009-10-27 20:44 ` Hugh Dickins
2009-10-27 21:04 ` David Rientjes
2009-10-27 21:04 ` David Rientjes
2009-10-28 0:08 ` Vedran Furač
2009-10-28 0:08 ` Vedran Furač
2009-10-28 0:25 ` David Rientjes
2009-10-28 0:25 ` David Rientjes
2009-10-28 0:39 ` Vedran Furač
2009-10-28 0:39 ` Vedran Furač
2009-10-28 4:08 ` David Rientjes
2009-10-28 4:08 ` David Rientjes
2009-10-28 4:55 ` KAMEZAWA Hiroyuki
2009-10-28 4:55 ` KAMEZAWA Hiroyuki
2009-10-28 5:13 ` David Rientjes
2009-10-28 5:13 ` David Rientjes
2009-10-28 6:05 ` KAMEZAWA Hiroyuki
2009-10-28 6:05 ` KAMEZAWA Hiroyuki
2009-10-28 6:17 ` David Rientjes
2009-10-28 6:17 ` David Rientjes
2009-10-28 6:20 ` KAMEZAWA Hiroyuki
2009-10-28 6:20 ` KAMEZAWA Hiroyuki
2009-10-29 8:38 ` David Rientjes
2009-10-29 8:38 ` David Rientjes
2009-10-29 11:11 ` Vedran Furač
2009-10-29 11:11 ` Vedran Furač
2009-10-29 19:53 ` David Rientjes
2009-10-29 19:53 ` David Rientjes
2009-10-29 23:48 ` KAMEZAWA Hiroyuki
2009-10-29 23:48 ` KAMEZAWA Hiroyuki
2009-10-30 9:10 ` David Rientjes
2009-10-30 9:10 ` David Rientjes
2009-10-30 9:36 ` KAMEZAWA Hiroyuki
2009-10-30 9:36 ` KAMEZAWA Hiroyuki
2009-10-30 10:49 ` Thomas Fjellstrom
2009-11-03 20:49 ` David Rientjes
2009-11-03 20:49 ` David Rientjes
2009-11-04 0:50 ` KAMEZAWA Hiroyuki
2009-11-04 0:50 ` KAMEZAWA Hiroyuki
2009-11-04 1:58 ` David Rientjes
2009-11-04 1:58 ` David Rientjes
2009-11-04 2:17 ` KAMEZAWA Hiroyuki
2009-11-04 2:17 ` KAMEZAWA Hiroyuki
2009-11-04 3:10 ` David Rientjes
2009-11-04 3:10 ` David Rientjes
2009-11-04 3:19 ` KAMEZAWA Hiroyuki
2009-11-04 3:19 ` KAMEZAWA Hiroyuki
2009-10-30 13:59 ` Vedran Furač
2009-10-30 13:59 ` Vedran Furač
2009-10-30 19:24 ` David Rientjes
2009-10-30 19:24 ` David Rientjes
2009-11-02 19:58 ` Vedran Furač
2009-11-02 19:58 ` Vedran Furač
2009-10-28 13:28 ` Vedran Furač
2009-10-28 13:28 ` Vedran Furač
2009-10-28 20:10 ` David Rientjes
2009-10-28 20:10 ` David Rientjes
2009-10-29 3:05 ` Vedran Furač
2009-10-29 3:05 ` Vedran Furač
2009-10-29 8:35 ` David Rientjes
2009-10-29 8:35 ` David Rientjes
2009-10-29 11:01 ` Vedran Furač
2009-10-29 11:01 ` Vedran Furač
2009-10-29 19:42 ` David Rientjes
2009-10-29 19:42 ` David Rientjes
2009-10-30 13:53 ` Vedran Furač
2009-10-30 13:53 ` Vedran Furač
2009-10-30 14:08 ` Thomas Fjellstrom
2009-10-30 14:08 ` Thomas Fjellstrom
2009-10-30 15:13 ` Vedran Furač
2009-10-30 15:13 ` Vedran Furač
2009-10-30 14:12 ` Andrea Arcangeli
2009-10-30 14:12 ` Andrea Arcangeli
2009-10-30 14:41 ` Vedran Furač
2009-10-30 14:41 ` Vedran Furač
2009-10-30 15:15 ` Andrea Arcangeli
2009-10-30 15:15 ` Andrea Arcangeli
2009-10-30 16:24 ` Hugh Dickins
2009-10-30 16:24 ` Hugh Dickins
2009-11-02 19:56 ` Vedran Furač
2009-11-02 19:56 ` Vedran Furač
2009-10-30 19:44 ` David Rientjes
2009-10-30 19:44 ` David Rientjes
2009-11-02 19:56 ` Vedran Furač
2009-11-02 19:56 ` Vedran Furač
2009-10-28 0:43 ` KAMEZAWA Hiroyuki
2009-10-28 0:43 ` KAMEZAWA Hiroyuki
2009-10-28 2:47 ` KOSAKI Motohiro
2009-10-28 2:47 ` KOSAKI Motohiro
2009-10-28 3:17 ` KAMEZAWA Hiroyuki
2009-10-28 3:17 ` KAMEZAWA Hiroyuki
2009-10-28 4:12 ` David Rientjes
2009-10-28 4:12 ` David Rientjes
2009-10-28 8:10 ` Hugh Dickins
2009-10-28 8:10 ` Hugh Dickins
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