From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id C60EE8D0040 for ; Wed, 23 Mar 2011 03:49:02 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 445E23EE0C1 for ; Wed, 23 Mar 2011 16:48:59 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 2985345DE5A for ; Wed, 23 Mar 2011 16:48:59 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 10DED45DE55 for ; Wed, 23 Mar 2011 16:48:59 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id F3B9CE18003 for ; Wed, 23 Mar 2011 16:48:58 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.240.81.146]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id BCA89E08001 for ; Wed, 23 Mar 2011 16:48:58 +0900 (JST) Date: Wed, 23 Mar 2011 16:42:29 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH 2/5] Revert "oom: give the dying task a higher priority" Message-Id: <20110323164229.6b647004.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20110322200657.B064.A69D9226@jp.fujitsu.com> References: <20110315153801.3526.A69D9226@jp.fujitsu.com> <20110322194721.B05E.A69D9226@jp.fujitsu.com> <20110322200657.B064.A69D9226@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: linux-kernel@vger.kernel.org, Andrew Morton , David Rientjes , Linus Torvalds , Rik van Riel , Oleg Nesterov , linux-mm , Andrey Vagin , Hugh Dickins , "Luis Claudio R. Goncalves" On Tue, 22 Mar 2011 20:06:48 +0900 (JST) KOSAKI Motohiro 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 > Signed-off-by: KOSAKI Motohiro Acked-by: KAMEZAWA Hiroyuki -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org