From: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
To: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
davej-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
ben-/+tVBieCtBitmTQ+vhA3Yw@public.gmane.org,
pjt-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
lennart-mdGvqq1h2p+GdvJs77BJ7Q@public.gmane.org,
kay.sievers-tD+1rO4QERM@public.gmane.org
Subject: Re: [RFC 0/5] forced comounts for cgroups.
Date: Wed, 05 Sep 2012 12:20:53 +0200 [thread overview]
Message-ID: <1346840453.2461.6.camel@laptop> (raw)
In-Reply-To: <50471C0C.7050600-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
On Wed, 2012-09-05 at 13:31 +0400, Glauber Costa wrote:
>
> You wouldn't have to do more than one hierarchy walks for that. What
> Tejun seems to want, is the ability to not have a particular controller
> at some point in the tree. But if they exist, they are always together.
Right, but the accounting is very much tied to the control structures, I
suppose we could change that, but my jet-leg addled brain isn't seeing
anything particularly nice atm.
But I don't really see the point though, this kind of interface would
only ever work for the non-controlling and controlling controller
combination (confused yet ;-), and I don't think we have many of those.
I would really rather see a simplification of the entire cgroup
interface space as opposed to making it more complex. And adding this
subtree 'feature' only makes it more complex.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Glauber Costa <glommer@parallels.com>
Cc: Tejun Heo <tj@kernel.org>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-mm@kvack.org, davej@redhat.com, ben@decadent.org.uk,
pjt@google.com, lennart@poettering.net, kay.sievers@vrfy.org
Subject: Re: [RFC 0/5] forced comounts for cgroups.
Date: Wed, 05 Sep 2012 12:20:53 +0200 [thread overview]
Message-ID: <1346840453.2461.6.camel@laptop> (raw)
In-Reply-To: <50471C0C.7050600@parallels.com>
On Wed, 2012-09-05 at 13:31 +0400, Glauber Costa wrote:
>
> You wouldn't have to do more than one hierarchy walks for that. What
> Tejun seems to want, is the ability to not have a particular controller
> at some point in the tree. But if they exist, they are always together.
Right, but the accounting is very much tied to the control structures, I
suppose we could change that, but my jet-leg addled brain isn't seeing
anything particularly nice atm.
But I don't really see the point though, this kind of interface would
only ever work for the non-controlling and controlling controller
combination (confused yet ;-), and I don't think we have many of those.
I would really rather see a simplification of the entire cgroup
interface space as opposed to making it more complex. And adding this
subtree 'feature' only makes it more complex.
--
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WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Glauber Costa <glommer@parallels.com>
Cc: Tejun Heo <tj@kernel.org>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-mm@kvack.org, davej@redhat.com, ben@decadent.org.uk,
pjt@google.com, lennart@poettering.net, kay.sievers@vrfy.org
Subject: Re: [RFC 0/5] forced comounts for cgroups.
Date: Wed, 05 Sep 2012 12:20:53 +0200 [thread overview]
Message-ID: <1346840453.2461.6.camel@laptop> (raw)
In-Reply-To: <50471C0C.7050600@parallels.com>
On Wed, 2012-09-05 at 13:31 +0400, Glauber Costa wrote:
>
> You wouldn't have to do more than one hierarchy walks for that. What
> Tejun seems to want, is the ability to not have a particular controller
> at some point in the tree. But if they exist, they are always together.
Right, but the accounting is very much tied to the control structures, I
suppose we could change that, but my jet-leg addled brain isn't seeing
anything particularly nice atm.
But I don't really see the point though, this kind of interface would
only ever work for the non-controlling and controlling controller
combination (confused yet ;-), and I don't think we have many of those.
I would really rather see a simplification of the entire cgroup
interface space as opposed to making it more complex. And adding this
subtree 'feature' only makes it more complex.
next prev parent reply other threads:[~2012-09-05 10:20 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 14:18 [RFC 0/5] forced comounts for cgroups Glauber Costa
2012-09-04 14:18 ` Glauber Costa
2012-09-04 14:18 ` [RFC 1/5] cgroup: allow some comounts to be forced Glauber Costa
2012-09-04 14:18 ` Glauber Costa
2012-09-04 14:18 ` [RFC 2/5] sched: adjust exec_clock to use it as cpu usage metric Glauber Costa
2012-09-04 14:18 ` Glauber Costa
2012-09-04 14:18 ` [RFC 3/5] sched: do not call cpuacct_charge when cpu and cpuacct are comounted Glauber Costa
2012-09-04 14:18 ` Glauber Costa
2012-09-04 14:18 ` [RFC 4/5] cpuacct: do not gather cpuacct statistics when not mounted Glauber Costa
2012-09-04 14:18 ` Glauber Costa
2012-09-04 14:18 ` [RFC 5/5] sched: add cpusets to comounts list Glauber Costa
2012-09-04 14:18 ` Glauber Costa
[not found] ` <1346768300-10282-1-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-04 21:46 ` [RFC 0/5] forced comounts for cgroups Tejun Heo
2012-09-04 21:46 ` Tejun Heo
2012-09-04 21:46 ` Tejun Heo
[not found] ` <20120904214602.GA9092-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-09-05 8:03 ` Glauber Costa
2012-09-05 8:03 ` Glauber Costa
2012-09-05 8:03 ` Glauber Costa
2012-09-05 8:14 ` Tejun Heo
2012-09-05 8:14 ` Tejun Heo
2012-09-05 8:17 ` Glauber Costa
2012-09-05 8:17 ` Glauber Costa
2012-09-05 8:29 ` Tejun Heo
2012-09-05 8:29 ` Tejun Heo
[not found] ` <20120905082947.GD3195-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-09-05 8:35 ` Glauber Costa
2012-09-05 8:35 ` Glauber Costa
2012-09-05 8:35 ` Glauber Costa
2012-09-05 8:47 ` Tejun Heo
2012-09-05 8:47 ` Tejun Heo
[not found] ` <20120905084740.GE3195-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-09-05 8:55 ` Glauber Costa
2012-09-05 8:55 ` Glauber Costa
2012-09-05 8:55 ` Glauber Costa
2012-09-05 9:07 ` Tejun Heo
2012-09-05 9:07 ` Tejun Heo
[not found] ` <20120905090744.GG3195-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-09-05 9:06 ` Glauber Costa
2012-09-05 9:06 ` Glauber Costa
2012-09-05 9:06 ` Glauber Costa
[not found] ` <5047161F.60503-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-05 9:14 ` Tejun Heo
2012-09-05 9:14 ` Tejun Heo
2012-09-05 9:14 ` Tejun Heo
2012-09-05 9:06 ` Peter Zijlstra
2012-09-05 9:06 ` Peter Zijlstra
2012-09-05 9:07 ` Peter Zijlstra
2012-09-05 9:07 ` Peter Zijlstra
2012-09-05 9:22 ` Tejun Heo
2012-09-05 9:22 ` Tejun Heo
2012-09-05 9:11 ` Tejun Heo
2012-09-05 9:11 ` Tejun Heo
2012-09-05 9:11 ` Tejun Heo
2012-09-05 9:12 ` Glauber Costa
2012-09-05 9:12 ` Glauber Costa
[not found] ` <50471782.6060800-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-05 9:19 ` Tejun Heo
2012-09-05 9:19 ` Tejun Heo
2012-09-05 9:19 ` Tejun Heo
2012-09-05 9:30 ` Glauber Costa
2012-09-05 9:30 ` Glauber Costa
2012-09-05 9:30 ` Glauber Costa
2012-09-05 9:26 ` Peter Zijlstra
2012-09-05 9:26 ` Peter Zijlstra
2012-09-05 9:31 ` Glauber Costa
2012-09-05 9:31 ` Glauber Costa
2012-09-05 9:31 ` Glauber Costa
2012-09-05 9:45 ` Tejun Heo
2012-09-05 9:45 ` Tejun Heo
2012-09-05 9:48 ` Glauber Costa
2012-09-05 9:48 ` Glauber Costa
2012-09-05 9:56 ` Tejun Heo
2012-09-05 9:56 ` Tejun Heo
[not found] ` <50471C0C.7050600-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-05 10:20 ` Peter Zijlstra [this message]
2012-09-05 10:20 ` Peter Zijlstra
2012-09-05 10:20 ` Peter Zijlstra
2012-09-06 20:38 ` Tejun Heo
2012-09-06 20:38 ` Tejun Heo
[not found] ` <20120906203839.GM29092-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-09-06 22:39 ` Glauber Costa
2012-09-06 22:39 ` Glauber Costa
2012-09-06 22:39 ` Glauber Costa
[not found] ` <50492617.8030609-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-06 22:45 ` Tejun Heo
2012-09-06 22:45 ` Tejun Heo
2012-09-06 22:45 ` Tejun Heo
2012-09-05 9:32 ` Tejun Heo
2012-09-05 9:32 ` Tejun Heo
2012-09-05 9:32 ` Tejun Heo
2012-09-05 10:04 ` Peter Zijlstra
2012-09-05 10:04 ` Peter Zijlstra
2012-09-06 20:46 ` Tejun Heo
2012-09-06 20:46 ` Tejun Heo
2012-09-06 21:11 ` Paul Turner
2012-09-06 21:11 ` Paul Turner
2012-09-06 22:36 ` Glauber Costa
2012-09-06 22:36 ` Glauber Costa
2012-09-08 13:36 ` Dhaval Giani
2012-09-08 13:36 ` Dhaval Giani
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