From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 4AD3F6B004F for ; Tue, 25 Aug 2009 15:58:57 -0400 (EDT) Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by e28smtp09.in.ibm.com (8.14.3/8.13.1) with ESMTP id n7PJwrn7021637 for ; Wed, 26 Aug 2009 01:28:53 +0530 Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n7P8PTAV438446 for ; Tue, 25 Aug 2009 13:58:19 +0530 Received: from d28av02.in.ibm.com (loopback [127.0.0.1]) by d28av02.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id n7P8PT0U023259 for ; Tue, 25 Aug 2009 18:25:29 +1000 Date: Tue, 25 Aug 2009 13:55:26 +0530 From: Balbir Singh Subject: Re: [RFC][preview] memcg: reduce lock contention at uncharge by batching Message-ID: <20090825082526.GB29572@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <20090825112547.c2692965.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20090825112547.c2692965.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "nishimura@mxp.nes.nec.co.jp" List-ID: * KAMEZAWA Hiroyuki [2009-08-25 11:25:47]: > Hi, > > This is a preview of a patch for reduce lock contention for memcg->res_counter. > This makes series of uncharge in batch and reduce critical lock contention in > res_counter. This is still under developement and based on 2.6.31-rc7. > I'll rebase this onto mmotm if I'm ready. > > I have only 8cpu(4core/2socket) system now. no significant speed up but good lock_stat. > I'll test this on a 24 way that I have and check. I think these patches + resource counter per cpu locking should give good results. -- 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