Re: [PATCH/RFC] AutoPage Migration - V0.1 - 0/8 Overview

Christoph Lameter
2006-03-15T18:10:26Z

On Wed, 15 Mar 2006, Paul Jackson wrote:

> > Doesn't it make sense to duplicate heavily accessed shared read-only pages?
>
> It might .. that would be a major and difficult effort,
> and it is not clear that it would be a win. The additional
> bookkeeping to figure out what pages were heavily accessed
> would be very costly. Probably prohibitive.
>
> That's certainly a very different discussion than migration.

That is a different discussion but it is not complicated. There are
trivial one or two line patches around that make the fault handlers copy
a page if a certain mapcount is reached.