Re: [patch] vmfixes-2.4.0-test9-B2 - fixing deadlocks

Rik van Riel
2000-09-25T22:26:56Z

On Tue, 26 Sep 2000, Andrea Arcangeli wrote:
> On Mon, Sep 25, 2000 at 04:26:17PM -0300, Rik van Riel wrote:
> > > > It doesn't --- that is part of the design. The vm scanner propagates
> > >
> > > And that's the inferior part of the design IMHO.
> >
> > Indeed, but physical page based aging is a definate
> > 2.5 thing ... ;(
>
> I'm talking about the fact that if you have a file mmapped in
> 1.5G of RAM test9 will waste time rolling between LRUs 384000
> pages, while classzone won't ever see 1 of those pages until you
> run low on fs cache.

IMHO this is a minor issue because:
1) you need to do page replacement with shared pages
right
2) you don't /want/ to run low on fs cache, you want
to have a good balance between thee cache(s) and
the processes

OTOH, if you have a way to keep fair page aging and
fix the CPU time issue at the same time, I'd love
to see it.

regards,

Rik
--
"What you're running that piece of shit Gnome?!?!"
-- Miguel de Icaza, UKUUG 2000

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