linux-kernel - Re: [MM] Make mm counters per cpu instead of atomic V2

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Message-ID: <alpine.DEB.1.10.0911061231580.5187@V090114053VZO-1>
Date:	Fri, 6 Nov 2009 12:32:48 -0500 (EST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	Dave Jones <davej@...hat.com>,
	"hugh.dickins@...cali.co.uk" <hugh.dickins@...cali.co.uk>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, Tejun Heo <tj@...nel.org>
Subject: Re: [MM] Make mm counters per cpu instead of atomic V2

On Fri, 6 Nov 2009, KAMEZAWA Hiroyuki wrote:

> BTW, can't we have single-thread-mode for this counter ?
> Usual program's read-side will get much benefit.....

Thanks for the measurements.

A single thread mode would be good. Ideas on how to add that would be
appreciated.
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