From: Matt Fleming <matt@console-pimps.org>
To: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Vikas Shivappa <vikas.shivappa@intel.com>,
"Auld, Will" <will.auld@intel.com>,
Vikas Shivappa <vikas.shivappa@linux.intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Fleming, Matt" <matt.fleming@intel.com>
Subject: Re: Cache Allocation Technology Design
Date: Thu, 30 Oct 2014 14:14:13 +0000 [thread overview]
Message-ID: <20141030141413.GT12020@console-pimps.org> (raw)
In-Reply-To: <20141030124333.GA29540@htj.dyndns.org>
On Thu, 30 Oct, at 08:43:33AM, Tejun Heo wrote:
> Hello, Peter.
>
> On Thu, Oct 30, 2014 at 08:07:25AM +0100, Peter Zijlstra wrote:
> > If this means echo $tid > tasks, then sorry we can't do. There is a
> > limited number of hardware resources backing this thing. At some point
> > they're consumed and something must give.
>
> And that something shouldn't be disallowing task migration across
> cgroups. This simply doesn't work with co-mounting or unified
> hierarchy. cpuset automatically takes on the nearest ancestor's
> configuration which has enough execution resources. Maybe that can be
> an option for this too?
Oh, you can always add more tasks to a cgroup, or move tasks between
cgroups. What you can't always do is create more cgroups.
--
Matt Fleming, Intel Open Source Technology Center
next prev parent reply other threads:[~2014-10-30 14:20 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 18:44 Cache Allocation Technology Design vikas
2014-10-20 16:18 ` Matt Fleming
2014-10-24 10:53 ` Peter Zijlstra
2014-10-28 23:22 ` Matt Fleming
2014-10-29 8:16 ` Peter Zijlstra
2014-10-29 12:48 ` Matt Fleming
2014-10-29 13:45 ` Peter Zijlstra
2014-10-29 16:32 ` Auld, Will
2014-10-29 17:28 ` Peter Zijlstra
2014-10-29 17:41 ` Vikas Shivappa
2014-10-29 18:22 ` Tejun Heo
2014-10-30 7:07 ` Peter Zijlstra
2014-10-30 7:14 ` Peter Zijlstra
2014-10-30 12:44 ` Tejun Heo
2014-10-30 13:19 ` Peter Zijlstra
2014-10-30 15:25 ` Tejun Heo
2014-10-30 12:43 ` Tejun Heo
2014-10-30 13:18 ` Peter Zijlstra
2014-10-30 17:03 ` Tejun Heo
2014-10-30 21:43 ` Peter Zijlstra
2014-10-30 22:22 ` Tejun Heo
2014-10-30 22:47 ` Peter Zijlstra
2014-11-06 16:27 ` Matt Fleming
2014-11-06 17:20 ` Vikas Shivappa
2014-10-31 13:07 ` Peter Zijlstra
2014-10-31 15:58 ` Tejun Heo
2014-11-04 13:13 ` Peter Zijlstra
2014-11-05 20:41 ` Tejun Heo
2014-10-30 14:14 ` Matt Fleming [this message]
[not found] ` <CAAAKZwvJOKsrj_yczDGaNLaNYo+_=HzsTLwDdcaTJqO2VMy8uA@mail.gmail.com>
2014-10-30 17:12 ` Tejun Heo
2014-10-30 22:35 ` Tim Hockin
2014-10-31 16:57 ` Tejun Heo
2014-10-30 23:18 ` Vikas Shivappa
2014-11-04 13:17 ` Peter Zijlstra
2014-11-06 17:03 ` Matt Fleming
2014-11-10 15:50 ` Peter Zijlstra
2014-10-29 17:26 ` Vikas Shivappa
2014-10-29 18:16 ` Peter Zijlstra
2014-11-03 23:29 ` Vikas Shivappa
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