linux-kernel - Re: Over-eager swapping

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Message-ID: <alpine.DEB.2.00.1008181056350.4025@router.home>
Date:	Wed, 18 Aug 2010 10:57:09 -0500 (CDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
cc:	Chris Webb <chris@...chsys.com>,
	Minchan Kim <minchan.kim@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Andi Kleen <andi@...stfloor.org>,
	Lee Schermerhorn <lee.schermerhorn@...com>
Subject: Re: Over-eager swapping

On Wed, 18 Aug 2010, Wu Fengguang wrote:

> Andi, Christoph and Lee:
>
> This looks like an "unbalanced NUMA memory usage leading to premature
> swapping" problem.

Is zone reclaim active? It may not activate on smaller systems leading
to an unbalance memory usage between node.


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