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 SMTP id 546666B0089 for ; Mon, 12 Oct 2009 21:30:52 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp ([10.0.50.73]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n9D1UnuH028293 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Tue, 13 Oct 2009 10:30:50 +0900 Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id A48F345DE53 for ; Tue, 13 Oct 2009 10:30:49 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 791FA45DE4F for ; Tue, 13 Oct 2009 10:30:49 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 5D29BE08002 for ; Tue, 13 Oct 2009 10:30:49 +0900 (JST) Received: from m108.s.css.fujitsu.com (m108.s.css.fujitsu.com [10.249.87.108]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 07E3F1DB8037 for ; Tue, 13 Oct 2009 10:30:49 +0900 (JST) Date: Tue, 13 Oct 2009 10:28:27 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH 0/2] memcg: improving scalability by reducing lock contention at charge/uncharge Message-Id: <20091013102827.c0280e37.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <604427e00910121818w71dd4b7dl8781d7f5bc4f7dd9@mail.gmail.com> References: <20091002135531.3b5abf5c.kamezawa.hiroyu@jp.fujitsu.com> <604427e00910091737s52e11ce9p256c95d533dc2837@mail.gmail.com> <604427e00910111134o6f22f0ddg2b87124dd334ec02@mail.gmail.com> <20091013092920.7d509ffa.kamezawa.hiroyu@jp.fujitsu.com> <604427e00910121818w71dd4b7dl8781d7f5bc4f7dd9@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Ying Han Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" , "balbir@linux.vnet.ibm.com" , "nishimura@mxp.nes.nec.co.jp" List-ID: On Mon, 12 Oct 2009 18:18:44 -0700 Ying Han wrote: > Ok. After I am running the task in the child cgroup, I do see performance > improvement on the page-faults . Thank you. Hmm...I wonder what makes cache-miss dramatically larger. 4 process on 4 cpus ? (my script was for 8cpus.) -Kame > [Before] > Performance counter stats for './runpause.sh 10' (5 runs): > > 226190.612998 task-clock-msecs # 3.766 CPUs ( +- 0.192% > ) > 4454 context-switches # 0.000 M/sec ( +- 14.029% > ) > 38 CPU-migrations # 0.000 M/sec ( +- 15.385% > ) > 21445296 page-faults # 0.095 M/sec ( +- 1.686% > ) > 498345012124 cycles # 2203.208 M/sec ( +- 0.023% > ) > 255638483632 instructions # 0.513 IPC ( +- 0.196% > ) > 92240143452 cache-references # 407.798 M/sec ( +- 0.673% > ) > 175412792 cache-misses # 0.776 M/sec ( +- 2.188% > ) > > 60.068670564 seconds time elapsed ( +- 0.014% ) > > [After] > Performance counter stats for './runpause.sh 10' (5 runs): > > 214409.926571 task-clock-msecs # 3.570 CPUs ( +- 0.317% > ) > 3097 context-switches # 0.000 M/sec ( +- 25.726% > ) > 14 CPU-migrations # 0.000 M/sec ( +- 20.000% > ) > 33977467 page-faults # 0.158 M/sec ( +- 4.884% > ) > 472369769787 cycles # 2203.115 M/sec ( +- 0.024% > ) > 275624185415 instructions # 0.583 IPC ( +- 0.271% > ) > 98359325470 cache-references # 458.744 M/sec ( +- 0.281% > ) > 941121561 cache-misses # 4.389 M/sec ( +- 4.969% > ) > > 60.052748032 seconds time elapsed ( +- 0.013% ) > > --Ying > > > On Mon, Oct 12, 2009 at 5:29 PM, KAMEZAWA Hiroyuki < > kamezawa.hiroyu@jp.fujitsu.com> wrote: > > > On Sun, 11 Oct 2009 11:34:39 -0700 > > Ying Han wrote: > > > > > 2009/10/10 KAMEZAWA Hiroyuki > > > > > > This patch series is only for "child" cgroup. Sorry, I had to write it > > > > clearer. No effects to root. > > > > > > > > > > Ok, Thanks for making it clearer. :) So Do you mind post the cgroup+memcg > > > configuration > > > while you are running on your host? > > > > > > > #mount -t cgroup /dev/null /cgroups -omemory > > #mkdir /cgroups/A > > #echo $$ > /cgroups/A > > > > and run test. > > > > Thanks, > > -Kame > > > > > > > -- 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