From: David Rientjes <rientjes@google.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: vedran.furac@gmail.com, Hugh Dickins <hugh.dickins@tiscali.co.uk>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
minchan.kim@gmail.com, Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: Memory overcommit
Date: Tue, 27 Oct 2009 23:17:41 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.0910272311001.15462@chino.kir.corp.google.com> (raw)
In-Reply-To: <20091028150536.674abe68.kamezawa.hiroyu@jp.fujitsu.com>
On Wed, 28 Oct 2009, KAMEZAWA Hiroyuki wrote:
> All kernel engineers know "than expected or not" can be never known to the kernel.
> So, oom_adj workaround is used now. (by some special users.)
> OOM Killer itself is also a workaround, too.
> "No kill" is the best thing but we know there are tend to be memory-leaker on bad
> systems and all systems in this world are not perfect.
>
Right, and historically that has been addressed by considering total_vm
and adjusting it with oom_adj so that we can identify memory leaking tasks
through user-defined criteria.
> Yes, some more trustable values other than vmsize/rss/time are appriciated.
> I wonder recent memory consumption speed can be an another key value.
>
Sounds very logical.
> Anyway, current bahavior of "killing X" is a bad thing.
> We need some fixes.
>
You can easily protect X with OOM_DISABLE, as you know. I don't think we
need any X-specific heuristics added to the kernel, it looks like the
special cases have already polluted badness() enough.
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next prev parent reply other threads:[~2009-10-28 6:17 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <hav57c$rso$1@ger.gmane.org>
[not found] ` <20091013120840.a844052d.kamezawa.hiroyu@jp.fujitsu.com>
[not found] ` <hb2cfu$r08$2@ger.gmane.org>
[not found] ` <20091014135119.e1baa07f.kamezawa.hiroyu@jp.fujitsu.com>
2009-10-20 21:52 ` Vedran Furač
2009-10-26 1:55 ` KAMEZAWA Hiroyuki
2009-10-26 16:16 ` Vedran Furač
2009-10-27 3:22 ` KAMEZAWA Hiroyuki
2009-10-27 6:10 ` KOSAKI Motohiro
2009-10-27 6:34 ` Minchan Kim
2009-10-27 6:36 ` KAMEZAWA Hiroyuki
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 7:56 ` Minchan Kim
2009-10-27 12:38 ` Andrea Arcangeli
2009-10-28 0:22 ` KAMEZAWA Hiroyuki
2009-10-28 0:45 ` Vedran Furač
2009-10-27 7:56 ` KAMEZAWA Hiroyuki
2009-10-27 8:14 ` Minchan Kim
2009-10-27 8:33 ` KAMEZAWA Hiroyuki
2009-10-27 8:52 ` Minchan Kim
2009-10-27 8:56 ` KAMEZAWA Hiroyuki
2009-10-27 17:41 ` Vedran Furač
2009-10-28 0:13 ` KAMEZAWA Hiroyuki
2009-10-27 18:39 ` Hugh Dickins
2009-10-27 18:47 ` Andrea Arcangeli
2009-10-28 0:32 ` KAMEZAWA Hiroyuki
2009-11-05 19:02 ` Pavel Machek
2009-10-28 0:28 ` KAMEZAWA Hiroyuki
2009-10-27 6:46 ` KOSAKI Motohiro
2009-10-27 6:56 ` Minchan Kim
2009-10-27 17:12 ` Vedran Furač
2009-10-27 18:02 ` KOSAKI Motohiro
2009-10-27 18:30 ` Vedran Furač
2009-10-27 20:44 ` Hugh Dickins
2009-10-27 21:04 ` David Rientjes
2009-10-28 0:08 ` Vedran Furač
2009-10-28 0:25 ` David Rientjes
2009-10-28 0:39 ` Vedran Furač
2009-10-28 4:08 ` David Rientjes
2009-10-28 4:55 ` KAMEZAWA Hiroyuki
2009-10-28 5:13 ` David Rientjes
2009-10-28 6:05 ` KAMEZAWA Hiroyuki
2009-10-28 6:17 ` David Rientjes [this message]
2009-10-28 6:20 ` KAMEZAWA Hiroyuki
2009-10-29 8:38 ` David Rientjes
2009-10-29 11:11 ` Vedran Furač
2009-10-29 19:53 ` David Rientjes
2009-10-29 23:48 ` KAMEZAWA Hiroyuki
2009-10-30 9:10 ` David Rientjes
2009-10-30 9:36 ` KAMEZAWA Hiroyuki
2009-11-03 20:49 ` David Rientjes
2009-11-04 0:50 ` KAMEZAWA Hiroyuki
2009-11-04 1:58 ` David Rientjes
2009-11-04 2:17 ` KAMEZAWA Hiroyuki
2009-11-04 3:10 ` David Rientjes
2009-11-04 3:19 ` KAMEZAWA Hiroyuki
2009-10-30 13:59 ` Vedran Furač
2009-10-30 19:24 ` David Rientjes
2009-11-02 19:58 ` Vedran Furač
2009-10-28 13:28 ` Vedran Furač
2009-10-28 20:10 ` David Rientjes
2009-10-29 3:05 ` Vedran Furač
2009-10-29 8:35 ` David Rientjes
2009-10-29 11:01 ` Vedran Furač
2009-10-29 19:42 ` David Rientjes
2009-10-30 13:53 ` Vedran Furač
2009-10-30 14:08 ` Thomas Fjellstrom
2009-10-30 15:13 ` Vedran Furač
2009-10-30 14:12 ` Andrea Arcangeli
2009-10-30 14:41 ` Vedran Furač
2009-10-30 15:15 ` Andrea Arcangeli
2009-10-30 16:24 ` Hugh Dickins
2009-11-02 19:56 ` Vedran Furač
2009-10-30 19:44 ` David Rientjes
2009-11-02 19:56 ` Vedran Furač
2009-10-28 0:43 ` KAMEZAWA Hiroyuki
2009-10-28 2:47 ` KOSAKI Motohiro
2009-10-28 3:17 ` KAMEZAWA Hiroyuki
2009-10-28 4:12 ` David Rientjes
2009-10-28 8:10 ` Hugh Dickins
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