linux-kernel - Re: cgroup, RT reservation per core(s)?

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Message-Id: <1234352534.23438.130.camel@twins>
Date:	Wed, 11 Feb 2009 12:42:14 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Rolando Martins <rolando.martins@...il.com>
Cc:	linux-kernel@...r.kernel.org, Paul Menage <menage@...gle.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Subject: Re: cgroup, RT reservation per core(s)?

On Wed, 2009-02-11 at 11:33 +0000, Rolando Martins wrote:

> Hi again,
> 
> is there any way to have multiple "distinct" sched domains, i.e.:
> mount -t cgroup -o cpu none /dev/sched_domain_0
> .... setup sched_domain_0 (ex:  90% RT, 10% Others)
> mount -t cgroup -o cpu none /dev/sched_domain_1
> .... setup sched_domain_1 (ex:  20% RT, 80% Others)
> Then give sched_domain_0 to cpuset A and sched_domain_1 to B?

Nope.

We currently only support a single instance of a cgroup controller.

I see the use for what you propose, however implementing that will be
'interesting'.
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