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Date: Wed, 8 Apr 2009 13:01:15 +0530
Message-ID: <344eb09a0904080031y4406c001n584725b87024755@mail.gmail.com>
Subject: Re: [RFI] Shared accounting for memory resource controller
From: Bharata B Rao <bharata.rao@gmail.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: balbir@linux.vnet.ibm.com, "linux-mm@kvack.org" <linux-mm@kvack.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       "lizf@cn.fujitsu.com" <lizf@cn.fujitsu.com>,
       Rik van Riel <riel@surriel.com>, Bharata B Rao <bharata.rao@in.ibm.com>,
       Dhaval Giani <dhaval@linux.vnet.ibm.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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On Wed, Apr 8, 2009 at 12:48 PM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com> wrote:
>
> On Wed, 8 Apr 2009 12:41:15 +0530
> Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> > 3. Using the above, we can then try to (using an algorithm you
> > proposed), try to do some work for figuring out the shared percentage.
> >
> This is the point. At last. Why "# of shared pages" is important ?
>
> I wonder it's better to add new stat file as memory.cacheinfo which helps
> following kind of commands.
>
> ?#cacheinfo /cgroups/memory/group01/
> ? ? ? /usr/lib/libc.so.1 ? ? 30pages
> ? ? ? /var/log/messages ? ? ?1 pages
> ? ? ? /tmp/xxxxxx ? ? ? ? ? ?20 pages

Can I suggest that we don't add new files for additional stats and try
as far as possible to include them in <controller>.stat file. Please
note that we have APIs in libcgroup library which can return
statistics from controllers associated with a cgroup and these APIs
assume that stats are part of <controller>.stat file.

Regards,
Bharata.
--
http://bharata.sulekha.com/blog/posts.htm
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