From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH v2 cgroup/for-3.16] cgroup: add documentation about unified hierarchy Date: Tue, 22 Apr 2014 17:14:26 -0400 Message-ID: <20140422211426.GD3615@mtj.dyndns.org> References: <20140414220917.GD1863@htj.dyndns.org> <20140416145248.GD1257@htj.dyndns.org> <20140422162707.GR29311@dhcp22.suse.cz> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20140422162707.GR29311-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Michal Hocko Cc: Brandon Philips , containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Serge Hallyn , Kay Sievers , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Daniel Borkmann , Lennart Poettering , Johannes Weiner , Thomas Graf , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: containers.vger.kernel.org Hello, Hope you enjoyed the vacation. :) On Tue, Apr 22, 2014 at 06:27:07PM +0200, Michal Hocko wrote: > On Wed 16-04-14 10:52:48, Tejun Heo wrote: > [....] > > +The memory controller currently doesn't have a way to control what > > +happens between internal tasks and child cgroups and the behavior is > > +not clearly defined. > > I am not sure I understand this. Could you be more specific what exactly > is not clearly defined? Oh, the fact that there are no control knobs for the internal tasks, so when there's contention involving both internal tasks and child cgroups, how resources are distributed is implementation specific without clearly defined rules. Thanks. -- tejun