From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id 217456B003D for ; Tue, 31 Mar 2009 01:13:03 -0400 (EDT) Received: from m2.gw.fujitsu.co.jp ([10.0.50.72]) by fgwmail7.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n2V5DDZc004314 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Tue, 31 Mar 2009 14:13:13 +0900 Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id A88F745DD79 for ; Tue, 31 Mar 2009 14:13:12 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 2FAAE45DE61 for ; Tue, 31 Mar 2009 14:13:12 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 8EFD61DB8042 for ; Tue, 31 Mar 2009 14:13:11 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 42A2B1DB803B for ; Tue, 31 Mar 2009 14:13:08 +0900 (JST) Date: Tue, 31 Mar 2009 14:11:40 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC][PATCH] memcg soft limit (yet another new design) v1 Message-Id: <20090331141140.9acd9b85.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20090331050143.GG16497@balbir.in.ibm.com> References: <20090327135933.789729cb.kamezawa.hiroyu@jp.fujitsu.com> <20090328181100.GB26686@balbir.in.ibm.com> <20090328182747.GA8339@balbir.in.ibm.com> <20090331090607.7ebc44c5.kamezawa.hiroyu@jp.fujitsu.com> <20090331050143.GG16497@balbir.in.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: balbir@linux.vnet.ibm.com Cc: "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "kosaki.motohiro@jp.fujitsu.com" , "nishimura@mxp.nes.nec.co.jp" List-ID: On Tue, 31 Mar 2009 10:31:43 +0530 Balbir Singh wrote: > * KAMEZAWA Hiroyuki [2009-03-31 09:06:07]: > > > On Sat, 28 Mar 2009 23:57:47 +0530 > > Balbir Singh wrote: > > > > > * Balbir Singh [2009-03-28 23:41:00]: > > > > > > > * KAMEZAWA Hiroyuki [2009-03-27 13:59:33]: > > > > > > > > > ==brief test result== > > > > > On 2CPU/1.6GB bytes machine. create group A and B > > > > > A. soft limit=300M > > > > > B. no soft limit > > > > > > > > > > Run a malloc() program on B and allcoate 1G of memory. The program just > > > > > sleeps after allocating memory and no memory refernce after it. > > > > > Run make -j 6 and compile the kernel. > > > > > > > > > > When vm.swappiness = 60 => 60MB of memory are swapped out from B. > > > > > When vm.swappiness = 10 => 1MB of memory are swapped out from B > > > > > > > > > > If no soft limit, 350MB of swap out will happen from B.(swapiness=60) > > > > > > > > > > > > > I ran the same tests, booted the machine with mem=1700M and maxcpus=2 > > > > > > > > Here is what I see with > > > > > > I meant to say, Here is what I see with my patches (v7) > > > > > > > your malloc program is like this ? > > > > int main(int argc, char *argv[]) > > { > > c = malloc(1G); > > memset(c, 0, 1G); > > getc(); > > } > > > > Very similar, instead of memset, we go integer by integer and set it > to 0, do two loops of touching and wait for user input before exiting. > Why two loops of touching ? has special meanings ? -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