From mboxrd@z Thu Jan 1 00:00:00 1970 From: Glauber Costa Subject: Re: [RFC REPOST] cgroup: removing css reference drain wait during cgroup removal Date: Wed, 14 Mar 2012 13:46:28 +0400 Message-ID: <4F6068F4.4090909@parallels.com> References: <20120312213155.GE23255@google.com> <20120312213343.GF23255@google.com> <20120313151148.f8004a00.kamezawa.hiroyu@jp.fujitsu.com> <20120313163914.GD7349@google.com> <20120314092828.3321731c.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120314092828.3321731c.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: KAMEZAWA Hiroyuki Cc: Tejun Heo , Michal Hocko , Johannes Weiner , gthelen-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, Hugh Dickins , linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Vivek Goyal , Jens Axboe , Li Zefan , containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Peter Zijlstra On 03/14/2012 04:28 AM, KAMEZAWA Hiroyuki wrote: > IIUC, in general, even in the processes are in a tree, in major case > of servers, their workloads are independent. > I think FLAT mode is the dafault. 'heararchical' is a crazy thing which > cannot be managed. Better pay attention to the current overall cgroups discussions being held by Tejun then. ([RFD] cgroup: about multiple hierarchies) The topic of whether of adapting all cgroups to be hierarchical by deafult is a recurring one. I personally think that it is not unachievable to make res_counters cheaper, therefore making this less of a problem.