From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 00/10] cgroups: Task counter subsystem v8
Date: Mon, 1 Apr 2013 13:29:43 -0700
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To: Tim Hockin <thockin-Rl2oBbRerpQdnm+yROfE0A@public.gmane.org>
Cc: Aditya Kali <adityakali-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Glauber Costa <glommer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Max Kellermann <mk-xMchvyqCc6DQT0dZR+AlfA@public.gmane.org>, Frederic Weisbecker <fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Paul Menage <paul-inf54ven1CmVyaH7bEyXVA@public.gmane.org>, Daniel J Walsh <dwalsh-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Mandeep Singh Baines <msb-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Containers <containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>

On Mon, Apr 01, 2013 at 01:09:09PM -0700, Tim Hockin wrote:
> Pardon my ignorance, but... what?  Use kernel memory limits as a proxy
> for process/thread counts?  That sounds terrible - I hope I am

Well, the argument was that process / thread counts were a poor and
unnecessary proxy for kernel memory consumption limit.  IIRC, Johannes
put it as (I'm paraphrasing) "you can't go to Fry's and buy 4k thread
worth of component".

> misunderstanding?  This task counter patch had several properties that
> mapped very well to what we want.
> 
> Is it dead in the water?

After some discussion, Frederic agreed that at least his use case can
be served well by kmemcg, maybe even better - IIRC it was container
fork bomb scenario, so you'll have to argue your way in why kmemcg
isn't a suitable solution for your use case if you wanna revive this.

Thanks.

-- 
tejun