From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx133.postini.com [74.125.245.133]) by kanga.kvack.org (Postfix) with SMTP id 410916B005C for ; Wed, 30 May 2012 20:11:07 -0400 (EDT) Received: from m2.gw.fujitsu.co.jp (unknown [10.0.50.72]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 60FEB3EE0B6 for ; Thu, 31 May 2012 09:11:05 +0900 (JST) Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 4B39045DE4E for ; Thu, 31 May 2012 09:11:05 +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 20F1F45DE56 for ; Thu, 31 May 2012 09:11:05 +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 131441DB803C for ; Thu, 31 May 2012 09:11:05 +0900 (JST) Received: from m1000.s.css.fujitsu.com (m1000.s.css.fujitsu.com [10.240.81.136]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id BBB5A1DB8038 for ; Thu, 31 May 2012 09:11:04 +0900 (JST) Message-ID: <4FC6B68C.2070703@jp.fujitsu.com> Date: Thu, 31 May 2012 09:08:44 +0900 From: Kamezawa Hiroyuki MIME-Version: 1.0 Subject: Re: [PATCH] meminfo: show /proc/meminfo base on container's memcg References: <1338260214-21919-1-git-send-email-gaofeng@cn.fujitsu.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Gao feng , hannes@cmpxchg.org, mhocko@suse.cz, bsingharora@gmail.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, containers@lists.linux-foundation.org (2012/05/31 6:38), David Rientjes wrote: > On Tue, 29 May 2012, Gao feng wrote: > >> cgroup and namespaces are used for creating containers but some of >> information is not isolated/virtualized. This patch is for isolating /proc/meminfo >> information per container, which uses memory cgroup. By this, top,free >> and other tools under container can work as expected(show container's >> usage) without changes. >> >> This patch is a trial to show memcg's info in /proc/meminfo if 'current' >> is under a memcg other than root. >> >> we show /proc/meminfo base on container's memory cgroup. >> because there are lots of info can't be provide by memcg, and >> the cmds such as top, free just use some entries of /proc/meminfo, >> we replace those entries by memory cgroup. >> >> if container has no memcg, we will show host's /proc/meminfo >> as before. >> >> there is no idea how to deal with Buffers,I just set it zero, >> It's strange if Buffers bigger than MemTotal. >> >> Signed-off-by: Gao feng > > Nack, this type of thing was initially tried with cpusets when a thread > was bound to a subset of nodes, i.e. only show the total amount of memory > spanned by those nodes. > Hmm. How about having memory.meminfo under memory cgroup directory and use it with bind mount ? (container tools will be able to help it.) Then, container applications(top,free,etc..) can read the values they wants. If admins don't want it, they'll not use bind mount. 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org