linux-kernel - Re: [RFC] cpuset: remove sched domain hooks from cpusets

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Message-ID: <20061022222652.B2526@unix-os.sc.intel.com>
Date:	Sun, 22 Oct 2006 22:26:52 -0700
From:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
To:	Paul Jackson <pj@....com>
Cc:	Martin Bligh <mbligh@...gle.com>, nickpiggin@...oo.com.au,
	akpm@...l.org, menage@...gle.com, Simon.Derr@...l.net,
	linux-kernel@...r.kernel.org, dino@...ibm.com,
	rohitseth@...gle.com, holt@....com, dipankar@...ibm.com,
	suresh.b.siddha@...el.com
Subject: Re: [RFC] cpuset: remove sched domain hooks from cpusets

On Sun, Oct 22, 2006 at 03:51:35AM -0700, Paul Jackson wrote:
> Martin wrote:
> > We (Google) are planning to use it to do some partitioning, albeit on
> > much smaller machines. I'd really like to NOT use cpus_allowed from
> > previous experience - if we can get it to to partition using separated
> > sched domains, that would be much better.
> 
> Why not use cpus_allowed for this, via cpusets and/or sched_setaffinity?

group of pinned tasks can completely skew the system load balancing..
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