linux-kernel - Re: [PATCH 10/14] Add /sys trigger for per-node memory compaction

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Date:	Tue, 6 Apr 2010 17:56:01 -0400
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Mel Gorman <mel@....ul.ie>, Andrea Arcangeli <aarcange@...hat.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Adam Litke <agl@...ibm.com>, Avi Kivity <avi@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Minchan Kim <minchan.kim@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 10/14] Add /sys trigger for per-node memory compaction

On Wed, 7 Apr 2010 09:31:48 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> A cgroup which controls placement of memory is cpuset.

err, yes, that.

> One idea is per cpuset. But per-node seems ok.

Which is superior?

Which maps best onto the way systems are used (and onto ways in which
we _intend_ that systems be used)?

Is the physical node really the best unit-of-administration?  And is
direct access to physical nodes the best means by which admins will
manage things?
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