linux-kernel - Re: [PATCH 4/4] zone_reclaim

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Date:	Thu, 14 May 2009 16:31:16 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Rik van Riel <riel@...hat.com>
cc:	Robin Holt <holt@....com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 4/4] zone_reclaim_mode is always 0 by default

On Thu, 14 May 2009, Rik van Riel wrote:

> I suspect that patches 1/4 through 3/4 will cause the
> system to behave better already, by only reclaiming
> the easiest to reclaim pages from zone reclaim and
> falling back after that - or am overlooking something?

zone reclaims default config has always only reclaimed the easiest
reclaimable pages. Manual configuration is necessary to reclaim other
pages.


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