From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: [RFD] cgroup: about multiple hierarchies Date: Thu, 01 Mar 2012 23:04:08 +0100 Message-ID: <1330639448.7414.97.camel@marge.simpson.net> References: <20120221211938.GE12236@google.com> <20120222163858.GB4128@redhat.com> <20120222165714.GC4128@redhat.com> <1329990094.24994.64.camel@twins> <1330006399.11248.20.camel@twins> <4F4FAF89.3090706@redhat.com> <1330633603.7414.49.camel@marge.simpson.net> <20120301210213.GF13533@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120301210213.GF13533-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Vivek Goyal Cc: Michal Schmidt , Peter Zijlstra , Tejun Heo , Li Zefan , containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andrew Morton , Kay Sievers , Lennart Poettering , Frederic Weisbecker , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Christoph Hellwig On Thu, 2012-03-01 at 16:02 -0500, Vivek Goyal wrote: > On Thu, Mar 01, 2012 at 09:26:43PM +0100, Mike Galbraith wrote: > > Q: you say systemd requires CONFIG_CGROUPS=y. Why is that? It's taking > > over sysvinits job afaiui, what does that have to do with cgroups? > > I think they were using it to track all the children forked by a service > and cleanup all of them if need be. So they just need it for logical > grouping functionality and don't require any controllers as such. Hm. Controllers are perhaps not required, but cpu controller was configured and used without consent. I didn't receive an offer. -Mike