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

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Message-ID: <20091229140957.GR3601@balbir.in.ibm.com>
Date:	Tue, 29 Dec 2009 19:39:57 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.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>,
	Mel Gorman <mel@....ul.ie>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH 4/4] memcg: add anon_scan_ratio to memory.stat file

* KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> [2009-12-28 16:49:27]:

> anon_scan_ratio feature doesn't only useful for global VM pressure
> analysis, but it also useful for memcg memroy pressure analysis.
> 
> Then, this patch add anon_scan_ratio field to memory.stat file too.
> 
> Instead, following debug statistics was removed. It isn't so user and/or
> developer friendly.
> 
> 	- recent_rotated_anon
> 	- recent_rotated_file
> 	- recent_scanned_anon
> 	- recent_scanned_file
>

I've been using these to look at statistics - specifically reclaim
data on my developer kernels.
 
-- 
	Balbir
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