From: "Luis Claudio R. Goncalves" <lclaudio@uudg.org>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Rik van Riel <riel@redhat.com>, Oleg Nesterov <oleg@redhat.com>,
linux-mm <linux-mm@kvack.org>, Andrey Vagin <avagin@openvz.org>,
Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH 2/5] Revert "oom: give the dying task a higher priority"
Date: Wed, 23 Mar 2011 10:40:37 -0300 [thread overview]
Message-ID: <20110323134037.GP5212@uudg.org> (raw)
In-Reply-To: <20110323164229.6b647004.kamezawa.hiroyu@jp.fujitsu.com>
On Wed, Mar 23, 2011 at 04:42:29PM +0900, KAMEZAWA Hiroyuki wrote:
| On Tue, 22 Mar 2011 20:06:48 +0900 (JST)
| KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
|
| > This reverts commit 93b43fa55088fe977503a156d1097cc2055449a2.
| >
| > The commit dramatically improve oom killer logic when fork-bomb
| > occur. But, I've found it has nasty corner case. Now cpu cgroup
| > has strange default RT runtime. It's 0! That said, if a process
| > under cpu cgroup promote RT scheduling class, the process never
| > run at all.
| >
| > Eventually, kernel may hang up when oom kill occur.
| >
| > The author need to resubmit it as adding knob and disabled
| > by default if he really need this feature.
| >
| > Cc: Luis Claudio R. Goncalves <lclaudio@uudg.org>
| > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
|
| Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
The original patch was written to fix an issue observed in 2.6.24.7-rt.
As the logic sounded useful, I ported it to upstream. Anyway,I am trying
a few ideas to rework that patch. In the meantime, I'm pretty fine with
reverting the commit.
Acked-by: Luis Claudio R. Goncalves <lgoncalv@uudg.org>
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next prev parent reply other threads:[~2011-03-23 13:40 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110314232156.0c363813.akpm@linux-foundation.org>
[not found] ` <20110315153801.3526.A69D9226@jp.fujitsu.com>
2011-03-22 11:04 ` [patch 0/5] oom: a few anti fork bomb patches KOSAKI Motohiro
2011-03-22 11:05 ` [PATCH 1/5] vmscan: remove all_unreclaimable check from direct reclaim path completely KOSAKI Motohiro
2011-03-22 14:49 ` Minchan Kim
2011-03-23 5:21 ` KOSAKI Motohiro
2011-03-23 6:59 ` Minchan Kim
2011-03-23 7:13 ` KOSAKI Motohiro
2011-03-23 8:24 ` Minchan Kim
2011-03-23 8:44 ` KOSAKI Motohiro
2011-03-23 9:02 ` Minchan Kim
2011-03-24 2:11 ` KOSAKI Motohiro
2011-03-24 2:21 ` Andrew Morton
2011-03-24 2:48 ` KOSAKI Motohiro
2011-03-24 3:04 ` Andrew Morton
2011-03-24 5:35 ` KOSAKI Motohiro
2011-03-24 4:19 ` Minchan Kim
2011-03-24 5:35 ` KOSAKI Motohiro
2011-03-24 5:53 ` Minchan Kim
2011-03-24 6:16 ` KOSAKI Motohiro
2011-03-24 6:32 ` Minchan Kim
2011-03-24 7:03 ` KOSAKI Motohiro
2011-03-24 7:25 ` Minchan Kim
2011-03-24 7:28 ` KOSAKI Motohiro
2011-03-24 7:34 ` Minchan Kim
2011-03-24 7:41 ` Minchan Kim
2011-03-24 7:43 ` KOSAKI Motohiro
2011-03-24 7:43 ` Minchan Kim
2011-03-23 7:41 ` KAMEZAWA Hiroyuki
2011-03-23 7:55 ` KOSAKI Motohiro
2011-03-22 11:06 ` [PATCH 2/5] Revert "oom: give the dying task a higher priority" KOSAKI Motohiro
2011-03-23 7:42 ` KAMEZAWA Hiroyuki
2011-03-23 13:40 ` Luis Claudio R. Goncalves [this message]
2011-03-24 0:06 ` KOSAKI Motohiro
2011-03-24 15:27 ` Minchan Kim
2011-03-28 9:48 ` KOSAKI Motohiro
2011-03-28 12:28 ` Minchan Kim
2011-03-28 9:51 ` Peter Zijlstra
2011-03-28 12:21 ` Minchan Kim
2011-03-28 12:28 ` Peter Zijlstra
2011-03-28 12:40 ` Minchan Kim
2011-03-28 13:10 ` Luis Claudio R. Goncalves
2011-03-28 13:18 ` Peter Zijlstra
2011-03-28 13:56 ` Luis Claudio R. Goncalves
2011-03-29 2:46 ` KOSAKI Motohiro
2011-03-28 13:48 ` Minchan Kim
2011-03-22 11:08 ` [PATCH 3/5] oom: create oom autogroup KOSAKI Motohiro
2011-03-22 23:21 ` Minchan Kim
2011-03-23 1:27 ` KOSAKI Motohiro
2011-03-23 2:41 ` Mike Galbraith
2011-03-22 11:08 ` [PATCH 4/5] mm: introduce wait_on_page_locked_killable KOSAKI Motohiro
2011-03-23 7:44 ` KAMEZAWA Hiroyuki
2011-03-24 15:04 ` Minchan Kim
2011-03-22 11:09 ` [PATCH 5/5] x86,mm: make pagefault killable KOSAKI Motohiro
2011-03-23 7:49 ` KAMEZAWA Hiroyuki
2011-03-23 8:09 ` KOSAKI Motohiro
2011-03-23 14:34 ` Linus Torvalds
2011-03-24 15:10 ` Minchan Kim
2011-03-24 17:13 ` Oleg Nesterov
2011-03-24 17:34 ` Linus Torvalds
2011-03-28 7:00 ` KOSAKI Motohiro
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