From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Serge Hallyn
<serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
"Aneesh Kumar K.V"
<aneesh.kumar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Arnaldo Carvalho de Melo
<acme-f8uhVLnGfZaxAyOMLChx1axOck334EZe@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Thomas Graf <tgraf-G/eBtMaohhA@public.gmane.org>,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Paul Turner <pjt-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC] cgroup TODOs
Date: Fri, 14 Sep 2012 12:49:50 -0700 [thread overview]
Message-ID: <20120914194950.GQ17747@google.com> (raw)
In-Reply-To: <20120914194439.GP17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
On Fri, Sep 14, 2012 at 12:44:39PM -0700, Tejun Heo wrote:
> I think there currently is too much (broken) flexibility and intent to
> remove it. That doesn't mean that removeing all flexibility is the
> right direction. It inherently is a balancing act and I think the
> proposed solution is a reasonable tradeoff. There's important
> difference between causing full overhead by default for all users and
> requiring some overhead when the use case at hand calls for the
> functionality.
That said, if someone can think of a better solution, I'm all ears.
One thing that *has* to be maintained is that it should be able to tag
a resource in such way that its associated controllers are
identifiable regardless of which task is looking at it.
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: containers@lists.linux-foundation.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org, Li Zefan <lizefan@huawei.com>,
Michal Hocko <mhocko@suse.cz>,
Glauber Costa <glommer@parallels.com>,
Peter Zijlstra <peterz@infradead.org>,
Paul Turner <pjt@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Thomas Graf <tgraf@suug.ch>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Neil Horman <nhorman@tuxdriver.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Serge Hallyn <serge.hallyn@ubuntu.com>
Subject: Re: [RFC] cgroup TODOs
Date: Fri, 14 Sep 2012 12:49:50 -0700 [thread overview]
Message-ID: <20120914194950.GQ17747@google.com> (raw)
In-Reply-To: <20120914194439.GP17747@google.com>
On Fri, Sep 14, 2012 at 12:44:39PM -0700, Tejun Heo wrote:
> I think there currently is too much (broken) flexibility and intent to
> remove it. That doesn't mean that removeing all flexibility is the
> right direction. It inherently is a balancing act and I think the
> proposed solution is a reasonable tradeoff. There's important
> difference between causing full overhead by default for all users and
> requiring some overhead when the use case at hand calls for the
> functionality.
That said, if someone can think of a better solution, I'm all ears.
One thing that *has* to be maintained is that it should be able to tag
a resource in such way that its associated controllers are
identifiable regardless of which task is looking at it.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-09-14 19:49 UTC|newest]
Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 20:58 [RFC] cgroup TODOs Tejun Heo
2012-09-13 20:58 ` Tejun Heo
2012-09-14 11:15 ` Peter Zijlstra
2012-09-14 12:54 ` Daniel P. Berrange
2012-09-14 12:54 ` Daniel P. Berrange
[not found] ` <20120914125427.GW6819-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 8:55 ` Glauber Costa
2012-09-14 17:53 ` Tejun Heo
2012-09-14 17:53 ` Tejun Heo
2012-09-14 17:53 ` Tejun Heo
[not found] ` <20120913205827.GO7677-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 8:16 ` Glauber Costa
[not found] ` <5052E7DF.7040000-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-14 9:12 ` Li Zefan
2012-09-14 9:12 ` Li Zefan
[not found] ` <5052F4FF.6070508-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2012-09-14 11:22 ` Peter Zijlstra
2012-09-14 11:22 ` Peter Zijlstra
2012-09-14 17:59 ` Tejun Heo
2012-09-14 17:59 ` Tejun Heo
[not found] ` <20120914175944.GF17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 18:23 ` Peter Zijlstra
2012-09-14 18:23 ` Peter Zijlstra
2012-09-14 18:33 ` Tejun Heo
2012-09-14 18:33 ` Tejun Heo
2012-09-14 17:43 ` Tejun Heo
2012-09-14 17:43 ` Tejun Heo
[not found] ` <20120914174329.GD17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-17 8:50 ` Glauber Costa
2012-09-17 8:50 ` Glauber Costa
2012-09-17 8:50 ` Glauber Costa
[not found] ` <5056E467.2090108-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-17 17:21 ` Tejun Heo
2012-09-17 17:21 ` Tejun Heo
[not found] ` <20120917172123.GB18677-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-18 8:16 ` Glauber Costa
2012-09-14 9:04 ` Mike Galbraith
2012-09-14 9:04 ` Mike Galbraith
[not found] ` <1347613484.4340.132.camel-YqMYhexLQo31wTEvPJ5Q0F6hYfS7NtTn@public.gmane.org>
2012-09-14 17:17 ` Tejun Heo
2012-09-14 17:17 ` Tejun Heo
2012-09-14 9:04 ` Mike Galbraith
2012-09-14 9:10 ` Daniel P. Berrange
2012-09-14 9:10 ` Daniel P. Berrange
[not found] ` <20120914091032.GA6819-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 9:08 ` Glauber Costa
2012-09-14 13:58 ` Vivek Goyal
2012-09-14 13:58 ` Vivek Goyal
[not found] ` <20120914135830.GB6221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 19:29 ` Tejun Heo
2012-09-14 19:29 ` Tejun Heo
[not found] ` <20120914192935.GO17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 21:51 ` Kay Sievers
2012-09-14 21:51 ` Kay Sievers
2012-09-14 11:15 ` Peter Zijlstra
2012-09-14 14:25 ` Vivek Goyal
2012-09-14 14:25 ` Vivek Goyal
[not found] ` <20120914142539.GC6221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 14:53 ` Peter Zijlstra
2012-09-14 14:53 ` Peter Zijlstra
2012-09-14 15:14 ` Vivek Goyal
2012-09-14 15:14 ` Vivek Goyal
[not found] ` <20120914151447.GD6221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 21:57 ` Tejun Heo
2012-09-14 21:57 ` Tejun Heo
[not found] ` <20120914215701.GW17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-17 15:27 ` Vivek Goyal
2012-09-17 15:27 ` Vivek Goyal
2012-09-18 18:08 ` Vivek Goyal
2012-09-18 18:08 ` Vivek Goyal
2012-09-17 8:55 ` Glauber Costa
2012-09-14 21:39 ` Tejun Heo
2012-09-14 21:39 ` Tejun Heo
[not found] ` <20120914213938.GV17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-17 15:05 ` Vivek Goyal
2012-09-17 15:05 ` Vivek Goyal
[not found] ` <20120917150518.GB5094-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-17 16:40 ` Tejun Heo
2012-09-17 16:40 ` Tejun Heo
2012-09-14 15:03 ` Michal Hocko
2012-09-14 15:03 ` Michal Hocko
[not found] ` <20120914150306.GQ28039-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2012-09-19 14:02 ` Michal Hocko
2012-09-19 14:02 ` Michal Hocko
2012-09-19 14:02 ` Michal Hocko
[not found] ` <20120919140203.GA5398-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2012-09-19 14:03 ` [PATCH 2.6.32] memcg: warn on deeper hierarchies with use_hierarchy==0 Michal Hocko
2012-09-19 14:03 ` Michal Hocko
[not found] ` <20120919140308.GB5398-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2012-09-19 19:38 ` David Rientjes
2012-09-19 19:38 ` David Rientjes
[not found] ` <alpine.DEB.2.00.1209191237020.749-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2012-09-20 13:24 ` Michal Hocko
2012-09-20 13:24 ` Michal Hocko
[not found] ` <20120920132400.GC23872-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2012-09-20 22:33 ` David Rientjes
2012-09-20 22:33 ` David Rientjes
[not found] ` <alpine.DEB.2.00.1209201531250.17455-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2012-09-21 7:16 ` Michal Hocko
2012-09-21 7:16 ` Michal Hocko
2012-09-21 7:16 ` Michal Hocko
2012-09-20 13:24 ` Michal Hocko
2012-09-19 14:03 ` [PATCH 3.0] " Michal Hocko
2012-09-19 14:03 ` Michal Hocko
2012-09-19 14:05 ` [PATCH 3.2+] " Michal Hocko
2012-09-19 14:05 ` Michal Hocko
2012-09-19 14:05 ` Michal Hocko
2012-09-14 15:03 ` [RFC] cgroup TODOs Michal Hocko
2012-09-14 18:07 ` Vivek Goyal
2012-09-14 18:07 ` Vivek Goyal
[not found] ` <20120914180754.GF6221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 18:53 ` Tejun Heo
2012-09-14 18:53 ` Tejun Heo
[not found] ` <20120914185324.GI17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 19:28 ` Vivek Goyal
2012-09-14 19:28 ` Vivek Goyal
[not found] ` <20120914192840.GG6221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-09-14 19:44 ` Tejun Heo
2012-09-14 19:44 ` Tejun Heo
2012-09-14 19:44 ` Tejun Heo
[not found] ` <20120914194439.GP17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 19:49 ` Tejun Heo [this message]
2012-09-14 19:49 ` Tejun Heo
[not found] ` <20120914194950.GQ17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-14 20:39 ` Tejun Heo
2012-09-14 20:39 ` Tejun Heo
2012-09-14 20:39 ` Tejun Heo
[not found] ` <20120914203925.GR17747-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-17 8:40 ` Glauber Costa
2012-09-17 8:40 ` Glauber Costa
[not found] ` <5056E1FC.1090508-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-17 17:30 ` Tejun Heo
2012-09-17 17:30 ` Tejun Heo
2012-09-17 14:37 ` Vivek Goyal
2012-09-17 14:37 ` Vivek Goyal
2012-09-14 18:36 ` Aristeu Rozanski
2012-09-14 18:36 ` Aristeu Rozanski
2012-09-14 18:36 ` Aristeu Rozanski
[not found] ` <20120914183641.GA2191-YqEmrenMroyQb786VAuzj9i2O/JbrIOy@public.gmane.org>
2012-09-14 18:54 ` Tejun Heo
2012-09-14 18:54 ` Tejun Heo
2012-09-15 2:20 ` Serge E. Hallyn
2012-09-15 2:20 ` Serge E. Hallyn
[not found] ` <20120915022037.GA6438-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2012-09-15 9:27 ` Controlling devices and device namespaces Eric W. Biederman
2012-09-15 9:27 ` Eric W. Biederman
[not found] ` <87wqzv7i08.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-09-15 22:05 ` Serge E. Hallyn
2012-09-15 22:05 ` Serge E. Hallyn
[not found] ` <20120915220520.GA11364-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2012-09-16 0:24 ` Eric W. Biederman
2012-09-16 0:24 ` Eric W. Biederman
[not found] ` <87y5kazuez.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-09-16 3:31 ` Serge E. Hallyn
2012-09-16 3:31 ` Serge E. Hallyn
2012-09-16 11:21 ` Alan Cox
2012-09-16 11:21 ` Alan Cox
[not found] ` <20120916122112.3f16178d-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-09-16 11:56 ` Eric W. Biederman
2012-09-16 11:56 ` Eric W. Biederman
[not found] ` <87sjaiuqp5.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-09-16 12:17 ` Eric W. Biederman
2012-09-16 12:17 ` Eric W. Biederman
[not found] ` <87d31mupp3.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-09-16 13:32 ` Serge Hallyn
2012-09-16 13:32 ` Serge Hallyn
[not found] ` <5055D4D1.3070407-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2012-09-16 14:23 ` Eric W. Biederman
2012-09-16 14:23 ` Eric W. Biederman
[not found] ` <87k3vuqc5l.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-09-16 16:13 ` Alan Cox
2012-09-16 16:13 ` Alan Cox
[not found] ` <20120916171316.517ad0fd-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-09-16 17:49 ` Eric W. Biederman
2012-09-16 17:49 ` Eric W. Biederman
2012-09-16 16:15 ` Serge Hallyn
2012-09-16 16:15 ` Serge Hallyn
[not found] ` <5055FB2A.1020103-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2012-09-16 16:53 ` Eric W. Biederman
2012-09-16 16:53 ` Eric W. Biederman
2012-09-16 8:19 ` [RFC] cgroup TODOs James Bottomley
2012-09-16 8:19 ` James Bottomley
2012-09-16 8:19 ` James Bottomley
[not found] ` <1347783557.2463.1.camel-sFMDBYUN5F8GjUHQrlYNx2Wm91YjaHnnhRte9Li2A+AAvxtiuMwx3w@public.gmane.org>
2012-09-16 14:41 ` Eric W. Biederman
2012-09-16 14:41 ` Eric W. Biederman
2012-09-16 14:41 ` Eric W. Biederman
2012-09-17 13:21 ` Aristeu Rozanski
2012-09-17 13:21 ` Aristeu Rozanski
2012-09-14 22:03 ` Dhaval Giani
2012-09-14 22:03 ` Dhaval Giani
2012-09-14 22:03 ` Dhaval Giani
[not found] ` <CAPhKKr8wDLrcWHLTRq1M7gU_6CGNxzzF83zJo2WZ5vrY7h8Qyw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-09-14 22:06 ` Tejun Heo
2012-09-14 22:06 ` Tejun Heo
2012-09-20 1:33 ` Andy Lutomirski
2012-09-20 1:33 ` Andy Lutomirski
2012-09-20 1:33 ` Andy Lutomirski
[not found] ` <505A725B.2080901-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
2012-09-20 18:26 ` Tejun Heo
2012-09-20 18:26 ` Tejun Heo
2012-09-20 18:26 ` Tejun Heo
[not found] ` <20120920182651.GH28934-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-20 18:39 ` Andy Lutomirski
2012-09-20 18:39 ` Andy Lutomirski
2012-09-20 18:39 ` Andy Lutomirski
2012-09-21 21:40 ` Tejun Heo
2012-09-21 21:40 ` Tejun Heo
2012-09-21 21:40 ` Tejun Heo
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