linux-kernel - Re: [PATCH 00/25] Cleanup and optimise the page allocator V5

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Message-ID: <alpine.DEB.1.10.0903201503040.11746@qirst.com>
Date:	Fri, 20 Mar 2009 15:43:23 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Mel Gorman <mel@....ul.ie>
cc:	Linux Memory Management List <linux-mm@...ck.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Nick Piggin <npiggin@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lin Ming <ming.m.lin@...el.com>,
	Zhang Yanmin <yanmin_zhang@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 00/25] Cleanup and optimise the page allocator V5

On Fri, 20 Mar 2009, Mel Gorman wrote:

> > Is it possible to go to a simple
> > linked list (one cacheline to be touched)?
>
> I considered it but it breaks the hot/cold allocation/freeing logic and
> the search code became weird enough looking fast enough that I dropped
> it.

Maybe it would be workable if we drop the cold queue stuff (dubious
anyways)?

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