linux-kernel - Re: [PATCH v2] vmscan: limit concurrent reclaimers in shrink

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Message-Id: <20091214213932.BBC9.A69D9226@jp.fujitsu.com>
Date:	Mon, 14 Dec 2009 21:40:07 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com, Rik van Riel <riel@...hat.com>,
	lwoodman@...hat.com, akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, minchan.kim@...il.com
Subject: Re: [PATCH v2] vmscan: limit concurrent reclaimers in shrink_zone

> btw, following is mesurement result by hackbench.
> ================
> 
> unit: sec
> 
> parameter			old		new
> 130 (5200 processes)		5.463		4.442
> 140 (5600 processes)		479.357		7.792
> 150 (6000 processes)		729.640		20.529

old mean mmotm1208
new mean mmotm1208 + Rik patch + my patch



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