linux-kernel - Re: [PATCH -mm 00/25] VM pageout scalability improvements (V10)

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Date:	Fri, 6 Jun 2008 14:02:16 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	linux-kernel@...r.kernel.org, lee.schermerhorn@...com,
	kosaki.motohiro@...fujitsu.com
Subject: Re: [PATCH -mm 00/25] VM pageout scalability improvements (V10)

On Fri, 06 Jun 2008 16:28:38 -0400
Rik van Riel <riel@...hat.com> wrote:

> On large memory systems, the VM can spend way too much time scanning
> through pages that it cannot (or should not) evict from memory. Not
> only does it use up CPU time, but it also provokes lock contention
> and can leave large systems under memory presure in a catatonic state.
> 
> Against 2.6.26-rc2-mm1
> 
> This patch series improves VM scalability by:

-mm has a patch called
vmscan-give-referenced-active-and-unmapped-pages-a-second-trip-around-the-lru.patch
which has been sitting there for some time waiting for us to work out
whether or not it is a desirable thing.

This patchset of yours apparently retains the change which
vmscan-give-referenced-active-and-unmapped-pages-a-second-trip-around-the-lru.patch
makes.

But do we know that it was a good one?
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