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Date: Fri, 02 Mar 2007 14:51:16 -0800
From: Martin Bligh <mbligh@mbligh.org>
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To: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Bill Irwin <bill.irwin@oracle.com>,
       Christoph Lameter <clameter@engr.sgi.com>, Mel Gorman <mel@skynet.ie>,
       npiggin@suse.de, mingo@elte.hu, jschopp@austin.ibm.com,
       arjan@infradead.org, torvalds@linux-foundation.org, linux-mm@kvack.org,
       linux-kernel@vger.kernel.org
Subject: Re: The performance and behaviour of the anti-fragmentation related
 patches
References: <20070301101249.GA29351@skynet.ie>	<20070301160915.6da876c5.akpm@linux-foundation.org>	<45E842F6.5010105@redhat.com>	<20070302085838.bcf9099e.akpm@linux-foundation.org>	<Pine.LNX.4.64.0703020919350.16719@schroedinger.engr.sgi.com>	<20070302093501.34c6ef2a.akpm@linux-foundation.org>	<45E8624E.2080001@redhat.com>	<20070302100619.cec06d6a.akpm@linux-foundation.org>	<Pine.LNX.4.64.0703021012170.17676@schroedinger.engr.sgi.com>	<45E86BA0.50508@redhat.com>	<20070302211207.GJ10643@holomorphy.com>	<45E894D7.2040309@redhat.com>	<20070302135243.ada51084.akpm@linux-foundation.org>	<45E89F1E.8020803@redhat.com> <20070302142256.0127f5ac.akpm@linux-foundation.org> <45E8A677.7000205@redhat.com>
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>> None of this is going anywhere, is is it?
> 
> I will test my changes before I send them to you, but I cannot
> promise you that you'll have the computers or software needed
> to reproduce the problems.  I doubt I'll have full time access
> to such systems myself, either.
> 
> 32GB is pretty much the minimum size to reproduce some of these
> problems. Some workloads may need larger systems to easily trigger
> them.

We can find a 32GB system here pretty easily to test things on if
need be.  Setting up large commercial databases is much harder.

I don't have such a machine in the public set of machines we're going
to push to test.kernel.org from at the moment, but will see if I can
arrange it in the future if it's important.


M.