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 141C16B0011 for ; Tue, 24 May 2011 03:07:32 -0400 (EDT) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 853D63EE0BC for ; Tue, 24 May 2011 16:07:29 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 6E78E45DF6D for ; Tue, 24 May 2011 16:07:29 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 56BA645DF64 for ; Tue, 24 May 2011 16:07:29 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 46BE1EF8001 for ; Tue, 24 May 2011 16:07:29 +0900 (JST) Received: from ml13.s.css.fujitsu.com (ml13.s.css.fujitsu.com [10.240.81.133]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 0EEADE08002 for ; Tue, 24 May 2011 16:07:29 +0900 (JST) Message-ID: <4DDB5925.5000706@jp.fujitsu.com> Date: Tue, 24 May 2011 16:07:17 +0900 From: KOSAKI Motohiro MIME-Version: 1.0 Subject: Re: [PATCH V2] memcg: add documentation for memory.numastat API. References: <1306220513-7763-1-git-send-email-yinghan@google.com> In-Reply-To: <1306220513-7763-1-git-send-email-yinghan@google.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: yinghan@google.com Cc: minchan.kim@gmail.com, nishimura@mxp.nes.nec.co.jp, balbir@linux.vnet.ibm.com, tj@kernel.org, xemul@openvz.org, kamezawa.hiroyu@jp.fujitsu.com, akpm@linux-foundation.org, lizf@cn.fujitsu.com, mel@csn.ul.ie, cl@linux.com, hannes@cmpxchg.org, riel@redhat.com, hughd@google.com, mhocko@suse.cz, dave@linux.vnet.ibm.com, zhu.yanhai@gmail.com, linux-mm@kvack.org (2011/05/24 16:01), Ying Han wrote: > change v2..v1: > 1. add sample output. > > Signed-off-by: Ying Han > --- > Documentation/cgroups/memory.txt | 18 ++++++++++++++++++ > 1 files changed, 18 insertions(+), 0 deletions(-) > > diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt > index 2d7e527..0b1a1ce 100644 > --- a/Documentation/cgroups/memory.txt > +++ b/Documentation/cgroups/memory.txt > @@ -71,6 +71,7 @@ Brief summary of control files. > memory.move_charge_at_immigrate # set/show controls of moving charges > memory.oom_control # set/show oom controls. > memory.async_control # set control for asynchronous memory reclaim > + memory.numa_stat # show the number of memory usage per numa node > > 1. History > > @@ -477,6 +478,23 @@ value for efficient access. (Of course, when necessary, it's synchronized.) > If you want to know more exact memory usage, you should use RSS+CACHE(+SWAP) > value in memory.stat(see 5.2). > > +5.6 numa_stat > + > +This is similar to numa_maps but per-memcg basis. This is useful to add visibility > +of numa locality information in memcg since the pages are allowed to be allocated > +at any physical node. One of the usecase is evaluating application performance by > +combining this information with the cpu allocation to the application. > + > +We export "total", "file", "anon" and "unevictable" pages per-node for each memcg. > +The format ouput of the memory.numa_stat: > + > +total= N0= N1= ... > +file= N0= N1= ... > +anon= N0= N1= ... > +unevictable= N0= N1= ... > + > +And we have total = file + anon + unevictable. > + Looks good to me. Reviewed-by: KOSAKI Motohiro Thanks. -- 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