Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752803Ab1CJOIq (ORCPT ); Thu, 10 Mar 2011 09:08:46 -0500 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:57599 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752747Ab1CJOIn (ORCPT ); Thu, 10 Mar 2011 09:08:43 -0500 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 From: KOSAKI Motohiro To: KOSAKI Motohiro Subject: Re: [PATCH] mm: check zone->all_unreclaimable in all_unreclaimable() Cc: kosaki.motohiro@jp.fujitsu.com, avagin@gmail.com, KAMEZAWA Hiroyuki , Andrew Morton , Minchan Kim , Andrey Vagin , Mel Gorman , linux-mm@kvack.org, linux-kernel@vger.kernel.org In-Reply-To: <20110309145457.0400.A69D9226@jp.fujitsu.com> References: <4D767D43.5020802@gmail.com> <20110309145457.0400.A69D9226@jp.fujitsu.com> Message-Id: <20110310224939.F926.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50.07 [ja] Date: Thu, 10 Mar 2011 23:08:39 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1150 Lines: 36 > Hi, > > Hmmm... > If I could observed your patch, I did support your opinion. but I didn't. so, now I'm > curious why we got the different conclusion. tommorow, I'll try to construct a test > environment to reproduce your system. Hm, following two patches seems to have bad interaction. former makes SCHED_FIFO when OOM, latter makes CPU 100% occupied busy loop if LRU is really tight. Of cource, I need to run more much test. I'll digg it more at this weekend (maybe). commit 93b43fa55088fe977503a156d1097cc2055449a2 Author: Luis Claudio R. Goncalves Date: Mon Aug 9 17:19:41 2010 -0700 oom: give the dying task a higher priority commit 0e093d99763eb4cea09f8ca4f1d01f34e121d10b Author: Mel Gorman Date: Tue Oct 26 14:21:45 2010 -0700 writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant conge -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/