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Date: Thu, 19 Aug 2010 10:46:10 +0530
From: Balbir Singh <balbir@linux.vnet.ibm.com>
Subject: Re: Over-eager swapping
Message-ID: <20100819051610.GI28417@balbir.in.ibm.com>
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To: Christoph Lameter <cl@linux-foundation.org>
Cc: Chris Webb <chris@arachsys.com>, Lee Schermerhorn <Lee.Schermerhorn@hp.com>, Wu Fengguang <fengguang.wu@intel.com>, Minchan Kim <minchan.kim@gmail.com>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Pekka Enberg <penberg@cs.helsinki.fi>, Andi Kleen <andi@firstfloor.org>
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* Christoph Lameter <cl@linux-foundation.org> [2010-08-18 11:13:03]:

> On Wed, 18 Aug 2010, Chris Webb wrote:
> 
> > > != 0.  And even then, zone reclaim should only reclaim file pages, not
> > > anon.  In theory...
> >
> > Hi. This is zero on all our machines:
> >
> > # sysctl vm.zone_reclaim_mode
> > vm.zone_reclaim_mode = 0
> 
> Set it to 1.
>

Isn't that bad in terms of how we treat the cost of remote node
allocations? Is local zone_reclaim() always a good thing or is it
something for chris to try and see if that helps his situation?

-- 
	Three Cheers,
	Balbir

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