linux-kernel - Re: [PATCH 3/4] vmstat: add anon_scan

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Message-Id: <20100104084701.6e8d7f12.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 4 Jan 2010 08:47:01 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH 3/4] vmstat: add anon_scan_ratio field to zoneinfo

On Mon, 28 Dec 2009 16:48:51 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> Vmscan folks was asked "why does my system makes so much swap-out?"
> in lkml at several times.
> At that time, I made the debug patch to show recent_anon_{scanned/rorated}
> parameter at least three times.
> 
> Thus, its parameter should be showed on /proc/zoneinfo. It help
> vmscan folks debugging.
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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