linux-kernel - Re: [PATCH] Configurable reclaim batch size

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Message-ID: <Pine.LNX.4.64.0709171053040.26860@schroedinger.engr.sgi.com>
Date:	Mon, 17 Sep 2007 10:54:59 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Configurable reclaim batch size

On Sat, 15 Sep 2007, Peter Zijlstra wrote:

> It increases the lock hold times though. Otoh it might work out with the
> lock placement.

Yeah may be good for NUMA.

> Do you have any numbers that show this is worthwhile?

Tried to run AIM7 but the improvements are in the noise. I need a tests 
that really does large memory allocation and stresses the LRU. I could 
code something up but then Lee's patch addresses some of the same issues.
Is there any standard test that shows LRU handling regressions?

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