From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@engr.sgi.com>
Subject: Re: [PATCH 1/5] cpuset memory spread basic implementation
Date: Tue, 7 Feb 2006 18:29:45 +0100
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Cc: Ingo Molnar <mingo@elte.hu>, steiner@sgi.com, Paul Jackson <pj@sgi.com>,
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       linux-kernel@vger.kernel.org
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On Tuesday 07 February 2006 18:11, Christoph Lameter wrote:
> On Tue, 7 Feb 2006, Andi Kleen wrote:
> 
> > > are you sure this is not some older VM issue? 
> > 
> > Unless you implement page migration for all caches it's still there.
> > The only way to get rid of caches on a node currently is to throw them
> > away.  And refetching them from disk is quite costly.
> 
> The caches on a node are shrunk dynamically see the zone_reclaim 
> functionality introduced in 2.6.16-rc2.

Yes, they're thrown away which is wasteful. If they were spread
around in the first place that often wouldn't be needed.

-Andi

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