From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 3/7] proc: Introduce the Children: line in
	/proc/<pid>/status
Date: Sat, 23 Jul 2011 10:50:14 +0200
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To: Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>, Cyrill Gorcunov <gorcunov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>, Linux Containers <containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org>, Serge Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>, Daniel Lezcano <dlezcano-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
List-Id: containers.vger.kernel.org

On Sat, Jul 23, 2011 at 12:45:02PM +0400, Pavel Emelyanov wrote:
> OK I see. Then my answer is - typically a container looks like an
> init task with everybody else growing from that point. Having a
> machine with 1000 of containers building the whole /proc tree in
> memory to dump a single container would be MUCH more expensive that
> having this small like in proc.

This isn't a major point, so let's leave it alone for now.  If it's
necessary, adding it isn't a big deal; however, I think it would
probably be better solved by per-ns procfs.  If walking /proc becomes
a huge overhead, CR wouldn't be the only one suffering and it calls
for a better solution.

Thanks.

-- 
tejun