From: David Rientjes <rientjes@google.com>
To: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Gao feng <gaofeng@cn.fujitsu.com>,
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
Subject: Re: [PATCH] meminfo: show /proc/meminfo base on container's memcg
Date: Wed, 30 May 2012 23:17:51 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1205302314190.25774@chino.kir.corp.google.com> (raw)
In-Reply-To: <4FC70355.70805@jp.fujitsu.com>
On Thu, 31 May 2012, Kamezawa Hiroyuki wrote:
> > The bottomline is that /proc/meminfo is one of many global resource state
> > interfaces and doesn't imply that every thread has access to the full
> > resources. It never has. It's very simple for another thread to consume
> > a large amount of memory as soon as your read() of /proc/meminfo completes
> > and then that information is completely bogus.
>
> Why you need to discuss this here ? We know all information are snapshot.
>
MemTotal is usually assumed to be static from /proc/meminfo and could now
change radically without notification to the application.
> Hmm....maybe need to mount cgroup in the container (again) and get an access
> to cgroup
> hierarchy and find the cgroup it belongs to......if it's allowed.
An application should always know the cgroup that its attached to and be
able to read its state using the command that I gave earlier.
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next prev parent reply other threads:[~2012-05-31 6:17 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-29 2:56 Gao feng
2012-05-29 8:24 ` Glauber Costa
2012-05-30 21:38 ` David Rientjes
2012-05-30 23:20 ` Kirill A. Shutemov
2012-05-31 0:35 ` David Rientjes
2012-05-31 0:08 ` Kamezawa Hiroyuki
2012-05-31 0:22 ` KOSAKI Motohiro
2012-05-31 0:33 ` Kamezawa Hiroyuki
2012-05-31 0:44 ` David Rientjes
2012-05-31 0:53 ` Kamezawa Hiroyuki
2012-05-31 1:31 ` David Rientjes
2012-05-31 2:33 ` Kamezawa Hiroyuki
2012-05-31 5:02 ` David Rientjes
2012-05-31 5:36 ` Kamezawa Hiroyuki
2012-05-31 6:17 ` David Rientjes [this message]
2012-05-31 6:23 ` KOSAKI Motohiro
2012-05-31 6:28 ` David Rientjes
2012-05-31 6:37 ` KOSAKI Motohiro
2012-05-31 6:56 ` David Rientjes
2012-05-31 7:09 ` KOSAKI Motohiro
2012-05-31 7:35 ` David Rientjes
2012-05-31 7:42 ` KOSAKI Motohiro
2012-05-31 7:57 ` Johannes Weiner
2012-05-31 7:58 ` Gao feng
2012-05-31 8:32 ` Glauber Costa
2012-05-31 8:51 ` Kamezawa Hiroyuki
2012-05-31 8:59 ` Glauber Costa
2012-05-31 8:55 ` Gao feng
2012-05-31 8:56 ` Glauber Costa
2012-05-31 7:07 ` Kamezawa Hiroyuki
2012-05-31 7:23 ` KOSAKI Motohiro
2012-05-31 8:29 ` Glauber Costa
2012-06-07 23:18 ` Zhu Yanhai
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