From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757636Ab0KRPLu (ORCPT ); Thu, 18 Nov 2010 10:11:50 -0500 Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69]:58941 "EHLO elasmtp-mealy.atl.sa.earthlink.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756378Ab0KRPLt (ORCPT ); Thu, 18 Nov 2010 10:11:49 -0500 X-Greylist: delayed 653 seconds by postgrey-1.27 at vger.kernel.org; Thu, 18 Nov 2010 10:11:49 EST DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=XBaXiSfiRvd0fElKBQ+ZDcIrLSFVa69fFCYE34um6eKgs+FQrYXG05F/JX51MpuI; h=Received:Message-ID:Date:From:Reply-To:User-Agent:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding:X-ELNK-Trace:X-Originating-IP; Message-ID: <4CE53F81.8070300@earthlink.net> Date: Thu, 18 Nov 2010 10:00:17 -0500 From: Stephen Clark Reply-To: sclark46@earthlink.net User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Thunderbird/3.0.7 MIME-Version: 1.0 To: Peter Zijlstra CC: Lennart Poettering , Linus Torvalds , Alan Cox , Dhaval Giani , Mike Galbraith , Vivek Goyal , Oleg Nesterov , Markus Trippelsdorf , Mathieu Desnoyers , Ingo Molnar , LKML , Balbir Singh Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups References: <20101116170312.GA19327@tango.0pointer.de> <20101116181603.GC19327@tango.0pointer.de> <20101116202839.GC27235@tango.0pointer.de> <20101116205243.64e4a67a@lxorguk.ukuu.org.uk> <20101117223411.GA23983@tango.0pointer.de> <1290033435.2109.1282.camel@laptop> <20101117224547.GA26008@tango.0pointer.de> <1290034337.2109.1287.camel@laptop> In-Reply-To: <1290034337.2109.1287.camel@laptop> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ELNK-Trace: a437fbc6971e80f61aa676d7e74259b7b3291a7d08dfec79097f562b711540a1372f657901109784350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 69.22.83.66 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/17/2010 05:52 PM, Peter Zijlstra wrote: > On Wed, 2010-11-17 at 23:45 +0100, Lennart Poettering wrote: > >> On Wed, 17.11.10 23:37, Peter Zijlstra (a.p.zijlstra@chello.nl) wrote: >> >> >>> On Wed, 2010-11-17 at 23:34 +0100, Lennart Poettering wrote: >>> >>>> This should fix things for people with systemd and GNOME. Yes, all >>>> others are left in the cold. Sorry for that. >>>> >>> Is there an easy opt out for that, other than booting a CONFIG_CGROUP=n >>> kernel? >>> >> systemd relies on CONFIG_CGROUP=y, since it useses it for service >> management. It creates its own name=systemd hierarchy for that with no >> controllers attached. If you turn that off, then systemd will refuse to >> boot. >> > Do expect distro bugzilla entries when this 'awesome'-ness hits the > street. > > >> However, it does not rely on any of the controllers, and hence you >> are welcome to disable all cgroup controlls and systemd won't complain. >> >> If you want to disable the automatic creation of groups in the 'cpu' >> hierarchy for user sessions then you can tell pam_systemd that by passing >> "controllers=" on the PAM config line. ("controllers=cpu" is the implied >> default.) >> >> There's currently no global option to disable the same logic in systemd >> when it creates 'cpu' cgroups for the various services it runs. However, >> you can disable that individually with "ControlGroups=cpu:/" in the >> .service files. I will now add a global option as well. >> > A global knob is a must -- preferably with neon signs on so I can find > it. Luckily I don't use this GNOME junk, otherwise I'd have had to ask > how to revert that crap as well. > > > Amen!! -- "They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin) "The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson)