linux-kernel - Re: How can we make page replacement smarter

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Message-ID: <20070729140936.6cd364a9@the-village.bc.nu>
Date:	Sun, 29 Jul 2007 14:09:36 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Rik van Riel <riel@...hat.com>
Cc:	Al Boldi <a1426z@...ab.com>, Chris Snook <csnook@...hat.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: How can we make page replacement smarter

> Files are different.  File content tends to be grouped
> in large related chunks, both logically in the file and
> on disk.  Generally there is a lot more file data on a
> system than what fits in memory.

Binary paging patterns don't always look like that unfortunately although
I suspect we might want to be weighing towards paging out R/O file mapped
pages earlier simply because they are bigger linear chunks
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