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Subject: Re: cgroup, RT reservation per core(s)?
From: Peter Zijlstra <peterz@infradead.org>
To: Rolando Martins <rolando.martins@gmail.com>
Cc: linux-kernel@vger.kernel.org
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Date: Tue, 10 Feb 2009 20:53:33 +0100
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On Tue, 2009-02-10 at 17:32 +0000, Rolando Martins wrote:
> 
> For helping others:
> 
> mkdir /dev/cpuset
> mount -t cgroup -o cpuset none /dev/cpuset
> cd /dev/cpuset
> echo 0 > cpuset.sched_load_balance

I'm not quite sure that its allowed to disable load-balance before
creating children. Other than that it looks ok.

> mkdir A
> echo 0-1 > A/cpuset.cpus
> echo 0 > A/cpuset.mems
> mkdir B
> echo 2-3 > B/cpuset.cpus
> echo 0 > B/cpuset.mems
> 
> 
> mount -t cgroup -o cpu none /dev/sched_domain
> cd /dev/sched_domain
> mkdir 1
> echo cpu.rt_runtime_ns > 1/cpu.rt_runtime_ns
> mkdir 1/2
> echo 33333 > 1/2/cpu.rt_runtime_ns
> mkdir 1/3
> echo 33333 > 1/3/cpu.rt_runtime_ns
> mkdir 1/4
> echo 33333 > 1/3/cpu.rt_runtime_ns
> 
> For example, setting the current shell to a specific cpuset(A) and
> sched(1/2):
> 
> echo $$ > /dev/cpuset/A/tasks
> echo $$ > /dev/sched_domain/1/2/tasks
> "execute program"