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 3/7 -mm] oom: select task from tasklist for mempolicy ooms
Date: Wed, 10 Feb 2010 17:47:33 -0500 [thread overview]
Message-ID: <4B733785.7060608@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1002100228370.8001@chino.kir.corp.google.com>
On 02/10/2010 11:32 AM, David Rientjes wrote:
> The oom killer presently kills current whenever there is no more memory
> free or reclaimable on its mempolicy's nodes. There is no guarantee that
> current is a memory-hogging task or that killing it will free any
> substantial amount of memory, however.
>
> In such situations, it is better to scan the tasklist for nodes that are
> allowed to allocate on current's set of nodes and kill the task with the
> highest badness() score. This ensures that the most memory-hogging task,
> or the one configured by the user with /proc/pid/oom_adj, is always
> selected in such scenarios.
>
> Signed-off-by: David Rientjes<rientjes@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
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 3/7 -mm] oom: select task from tasklist for mempolicy ooms
Date: Wed, 10 Feb 2010 17:47:33 -0500 [thread overview]
Message-ID: <4B733785.7060608@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1002100228370.8001@chino.kir.corp.google.com>
On 02/10/2010 11:32 AM, David Rientjes wrote:
> The oom killer presently kills current whenever there is no more memory
> free or reclaimable on its mempolicy's nodes. There is no guarantee that
> current is a memory-hogging task or that killing it will free any
> substantial amount of memory, however.
>
> In such situations, it is better to scan the tasklist for nodes that are
> allowed to allocate on current's set of nodes and kill the task with the
> highest badness() score. This ensures that the most memory-hogging task,
> or the one configured by the user with /proc/pid/oom_adj, is always
> selected in such scenarios.
>
> Signed-off-by: David Rientjes<rientjes@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed.
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next prev parent reply other threads:[~2010-02-10 22:48 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 [this message]
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
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
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