From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id ED7CD6B005A for ; Tue, 11 Aug 2009 11:01:07 -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 n7BEvJAK025219 for ; Tue, 11 Aug 2009 20:27:19 +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 n7BF11GE2363442 for ; Tue, 11 Aug 2009 20:31:01 +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 n7BF10lm013848 for ; Wed, 12 Aug 2009 01:01:01 +1000 Date: Tue, 11 Aug 2009 20:30:57 +0530 From: Balbir Singh Subject: Re: Help Resource Counters Scale better (v4) Message-ID: <20090811150057.GY7176@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <20090811144405.GW7176@balbir.in.ibm.com> <4A81863A.2050504@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <4A81863A.2050504@redhat.com> Sender: owner-linux-mm@kvack.org To: Prarit Bhargava Cc: Andrew Morton , KAMEZAWA Hiroyuki , "nishimura@mxp.nes.nec.co.jp" , KOSAKI Motohiro , "menage@google.com" , andi.kleen@intel.com, Pavel Emelianov , "lizf@cn.fujitsu.com" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" List-ID: * Prarit Bhargava [2009-08-11 10:54:50]: > > > Balbir Singh wrote: >> Enhancement: Remove the overhead of root based resource counter accounting >> >> >> > > >> Please test/review. >> >> > FWIW ... > Thanks for the testing! > On a 64p/32G system running 2.6.31-git2-rc5, with RESOURCE_COUNTERS off, > "time make -j64" results in > > real 4m54.972s > user 90m13.456s > sys 50m19.711s > > On the same system, running 2.6.31-git2-rc5, with RESOURCE_COUNTERS on, > plus Balbir's "Help Resource Counters Scale Better (v3)" patch, and this ^^^ you mean (v4) right? > patch, results in > > real 4m18.607s > user 84m58.943s > sys 50m52.682s > Without the patch and RESOURCE_COUNTERS do you see a big overhead. I'd assume so, I am seeing it on my 24 way box that I have access to. -- 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