From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id 7D8C56B0011 for ; Tue, 24 May 2011 03:34:06 -0400 (EDT) Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by e28smtp06.in.ibm.com (8.14.4/8.13.1) with ESMTP id p4O7XJ94021149 for ; Tue, 24 May 2011 13:03:19 +0530 Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay03.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p4O7X3QM3567734 for ; Tue, 24 May 2011 13:03:09 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p4O7X2Ya026826 for ; Tue, 24 May 2011 13:03:03 +0530 Date: Tue, 24 May 2011 13:02:56 +0530 From: Balbir Singh Subject: Re: [PATCH V2] memcg: add documentation for memory.numastat API. Message-ID: <20110524073256.GM3139@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <1306220513-7763-1-git-send-email-yinghan@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <1306220513-7763-1-git-send-email-yinghan@google.com> Sender: owner-linux-mm@kvack.org List-ID: To: Ying Han Cc: KOSAKI Motohiro , Minchan Kim , Daisuke Nishimura , Tejun Heo , Pavel Emelyanov , KAMEZAWA Hiroyuki , Andrew Morton , Li Zefan , Mel Gorman , Christoph Lameter , Johannes Weiner , Rik van Riel , Hugh Dickins , Michal Hocko , Dave Hansen , Zhu Yanhai , linux-mm@kvack.org * Ying Han [2011-05-24 00:01:53]: > 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 Acked-by: Balbir Singh -- Three Cheers, 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org