From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 1 Sep 2008 17:53:02 +0900 From: Daisuke Nishimura Subject: Re: [RFC][PATCH 14/14]memcg: mem+swap accounting Message-Id: <20080901175302.737bca2e.nishimura@mxp.nes.nec.co.jp> In-Reply-To: <20080901165827.e21f9104.kamezawa.hiroyu@jp.fujitsu.com> References: <20080822202720.b7977aab.kamezawa.hiroyu@jp.fujitsu.com> <20080822204455.922f87dc.kamezawa.hiroyu@jp.fujitsu.com> <20080901161501.2cba948e.nishimura@mxp.nes.nec.co.jp> <20080901165827.e21f9104.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: nishimura@mxp.nes.nec.co.jp, "linux-mm@kvack.org" , "balbir@linux.vnet.ibm.com" List-ID: On Mon, 1 Sep 2008 16:58:27 +0900, KAMEZAWA Hiroyuki wrote: > On Mon, 1 Sep 2008 16:15:01 +0900 > Daisuke Nishimura wrote: > > > Hi, Kamezawa-san. > > > > I'm testing these patches on mmotm-2008-08-29-01-08 > > (with some trivial fixes I've reported and some debug codes), This problem happens on the kernel without debug codes I added. > > but swap_in_bytes sometimes becomes very huge(it seems that > > over uncharge is happening..) and I can see OOM > > if I've set memswap_limit. > > > > I'm digging this now, but have you also ever seen it? > > > I didn't see that. I see, thanks. > But, as you say, maybe over-uncharge. Hmm.. > What kind of test ? Just use swap ? and did you use shmem or tmpfs ? > I don't do anything special, and this can happen without shmem/tmpfs (can happen with shmem/tmpfs, too). For example: - make swap out/in activity for a while(I used page01 of ltp). - stop the test. [root@localhost ~]# cat /cgroup/memory/01/memory.swap_in_bytes 4096 - swapoff [root@localhost ~]# swapoff -a [root@localhost ~]# cat /cgroup/memory/01/memory.swap_in_bytes 18446744073709395968 Thanks, Daisuke Nishimura. -- 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