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 ESMTP id C17656B003D for ; Sat, 28 Mar 2009 14:11:14 -0400 (EDT) Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61]) by e28smtp03.in.ibm.com (8.13.1/8.13.1) with ESMTP id n2SIBJkj001182 for ; Sat, 28 Mar 2009 23:41:19 +0530 Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n2SIBRPS4096190 for ; Sat, 28 Mar 2009 23:41:28 +0530 Received: from d28av02.in.ibm.com (loopback [127.0.0.1]) by d28av02.in.ibm.com (8.13.1/8.13.3) with ESMTP id n2SIBICP006960 for ; Sun, 29 Mar 2009 05:11:18 +1100 Date: Sat, 28 Mar 2009 23:41:00 +0530 From: Balbir Singh Subject: Re: [RFC][PATCH] memcg soft limit (yet another new design) v1 Message-ID: <20090328181100.GB26686@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <20090327135933.789729cb.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20090327135933.789729cb.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "kosaki.motohiro@jp.fujitsu.com" , "nishimura@mxp.nes.nec.co.jp" List-ID: * 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 A has a swapout of 344M and B has not swapout at all, since B is always under its soft limit. vm.swappiness is set to 60 I think the above is more along the lines of the expected functional behaviour. -- 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