From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <47E79A26.3070401@mxp.nes.nec.co.jp> Date: Mon, 24 Mar 2008 21:10:14 +0900 From: Daisuke Nishimura MIME-Version: 1.0 Subject: Re: [RFC][PATCH] another swap controller for cgroup References: <20080317020407.8512E1E7995@siro.lan> <47DE2894.6010306@mxp.nes.nec.co.jp> In-Reply-To: <47DE2894.6010306@mxp.nes.nec.co.jp> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: yamamoto@valinux.co.jp Cc: Hugh Dickins , Balbir Singh , KAMEZAWA Hiroyuki , minoura@valinux.co.jp, Linux Containers , Linux MM List-ID: Daisuke Nishimura wrote: > Hi, Yamamoto-san. > > I'm reviewing and testing your patch now. > In building kernel infinitely(in a cgroup of memory.limit=64M and swap.limit=128M, with swappiness=100), almost all of the swap (1GB) is consumed as swap cache after a day or so. As a result, processes are occasionally OOM-killed even when the swap.usage of the group doesn't exceed the limit. I don't know why the swap cache uses up swap space. I will test whether a similar issue happens without your patch. Do you have any thoughts? BTW, I think that it would be better, in the sence of isolating memory resource, if there is a framework to limit the usage of swap cache. 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