From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 6F64C6B0087 for ; Fri, 28 Aug 2009 00:29:26 -0400 (EDT) Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by e28smtp08.in.ibm.com (8.14.3/8.13.1) with ESMTP id n7S4SgDf020732 for ; Fri, 28 Aug 2009 09:58:42 +0530 Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n7S4TLoV2089084 for ; Fri, 28 Aug 2009 09:59:21 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id n7S4TKUu026245 for ; Fri, 28 Aug 2009 14:29:21 +1000 Date: Fri, 28 Aug 2009 09:58:36 +0530 From: Balbir Singh Subject: Re: [RFC][PATCH 0/5] memcg: reduce lock conetion Message-ID: <20090828042836.GD4889@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <20090828132015.10a42e40.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20090828132015.10a42e40.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "nishimura@mxp.nes.nec.co.jp" List-ID: * KAMEZAWA Hiroyuki [2009-08-28 13:20:15]: > Hi, > > Recently, memcg's res_counter->lock contention on big server is reported and > Balbir wrote a workaround for root memcg. > It's good but we need some fix for children, too. > > This set is for reducing lock conetion of memcg's children cgroup based on mmotm-Aug27. > > I'm sorry I have only 8cpu machine and can't reproduce very troublesome lock conention. > Here is lock_stat of make -j 12 on my 8cpu box, befre-after this patch series. > Kamezawa-San, I've been unable to get mmotm to boot (24th August, I'll try the 27th Aug and debug). Once that is done, I'll test on a large machine. -- Balbir -- 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/ . Don't email: email@kvack.org