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Date:	Sat, 20 Jun 2009 09:24:30 +0200
From:	Brice Goglin <Brice.Goglin@...ia.fr>
To:	Lee Schermerhorn <Lee.Schermerhorn@...com>
CC:	Andi Kleen <andi@...stfloor.org>,
	Stefan Lankes <lankes@...s.rwth-aachen.de>,
	linux-kernel@...r.kernel.org, linux-numa@...r.kernel.org,
	Boris Bierbaum <boris@...s.rwth-aachen.de>,
	'Brice Goglin' <Brice.Goglin@...ia.fr>
Subject: Re: [RFC PATCH 0/4]: affinity-on-next-touch

Lee Schermerhorn wrote:
> My patches don't have per process enablement.  Rather, I chose to use
> per cpuset enablement.  I view cpusets as sort of "numa control groups"
> and thought this was an appropriate level at which to control this sort
> of behavior--analogous to memory_spread_{page|slab}.  That probably
> needs to be discussed more widely, tho'.
>   

Could you explain why you actually want to enable/disable
migrate-on-fault on a cpuset (or process) basis? Why would an
administrator want to disable it? Aren't the existing cpuset memory
restriction abilities enough?

Brice

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