Re: Cache Allocation Technology Design

[Matt Fleming]

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
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