From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id D442E6B004F for ; Tue, 11 Aug 2009 11:24:05 -0400 (EDT) Message-ID: <4A818C7D.7010307@redhat.com> Date: Tue, 11 Aug 2009 11:21:33 -0400 From: Prarit Bhargava MIME-Version: 1.0 Subject: Re: Help Resource Counters Scale better (v4) References: <20090811144405.GW7176@balbir.in.ibm.com> <4A81863A.2050504@redhat.com> <87d472gyw9.fsf@basil.nowhere.org> In-Reply-To: <87d472gyw9.fsf@basil.nowhere.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Andi Kleen Cc: balbir@linux.vnet.ibm.com, 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: Andi Kleen wrote: > Prarit Bhargava writes: > >> On a 64p/32G system running 2.6.31-git2-rc5, with RESOURCE_COUNTERS >> > > This is CONFIG_RESOURCE_COUNTERS off at compile time right? > > >> off, "time make -j64" results in >> ^^^ yes. It is off. >> 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 patch, results in >> >> real 4m18.607s >> user 84m58.943s >> sys 50m52.682s >> > > Hmm, so resource counters on with the patch is faster than > CONFIG_RESOURCE_COUNTERS compiled out in real time? That seems > counterintuitive. At best I would expect the patch to break even, but > not be actually faster. > That is only after one run. I'm doing 10 reboot and build runs right now and will average them out. I'll ping back here with results. > > Still it looks like the patch is clearly needed. > > P. -- 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