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Date: Thu, 20 Dec 2001 19:42:05 -0200 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
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To: Pavel Machek <pavel@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Davide Libenzi <davidel@xmailserver.org>,
        lkml <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@transmeta.com>
Subject: Re: [RFC] Scheduler queue implementation ...
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On Thu, 20 Dec 2001, Pavel Machek wrote:

> > > Alan, you're mixing switch mm costs with cache image reload ones.
> > > Note that equal mm does not mean matching cache image, at all.
> >
> > They are often close to the same thing. Take a look at the constraints
> > on virtually cached processors like the ARM where they _are_ the same thing.
> >
> > Equal mm for cpu sucking tasks often means equal cache image. On the
>
> Really?
>
> I'd guess that if cpu-bound software wants to use clone(CLONE_VM) to
> gain some performance, it should better work "mostly" in different
> memory areas on different cpus... But I could be wrong.

I guess you never used xmms or mozilla, then ;)

(where threads seem to be used for different stages of
processing data ... not sure about mozilla)

regards,

Rik
-- 
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