linux-kernel - Re: 2.6.22 -mm merge plans -- lumpy reclaim

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Message-Id: <20070501120028.a4b62d6e.akpm@linux-foundation.org>
Date:	Tue, 1 May 2007 12:00:28 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andy Whitcroft <apw@...dowen.org>
Cc:	Mel Gorman <mel@...net.ie>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, clameter@....com, y-goto@...fujitsu.com,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: 2.6.22 -mm merge plans -- lumpy reclaim

On Tue, 01 May 2007 14:02:41 +0100 Andy Whitcroft <apw@...dowen.org> wrote:

> I have some primitive stats patches which we have used performance
> testing.  Perhaps those could be brought up to date to provide better
> visibility into lumpy's operation.  Again this would be a separate patch.

Feel free to add new counters in /proc/vmstat - perhaps per-order
success and fail rates?  Monitoring the ratio between those would show
how effective lumpiness is being, perhaps.

It's always nice to see what's going on in there.
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