linux-kernel - Re: Page coloring in linux

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Message-ID: <456B7B06.70709@surriel.com>
Date:	Mon, 27 Nov 2006 18:55:50 -0500
From:	Rik van Riel <riel@...riel.com>
To:	Apan Qasem <qasem@...rice.edu>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Page coloring in linux

Apan Qasem wrote:
> Does anyone know where I can find documentation on the page coloring 
> algorithm?  I just need to find out the the basic heuristics used in 
> coloring the pages.
> 
> Also, does the kernel source include the page coloring code or do I need 
> to patch the kernel?

The Linux kernel does not do page coloring.

One reason for this is that the vast majority of processors
has 4-way, 8-way or higher cache associativity, meaning that
the gains that could be had from coloring are a lot smaller
than they used to be.

Cache coloring is not free, either.

-- 
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