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Date: Thu, 20 Dec 2001 20:36:30 +0100
From: Pavel Machek <pavel@suse.cz>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Davide Libenzi <davidel@xmailserver.org>,
        lkml <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@transmeta.com>
Subject: Re: [RFC] Scheduler queue implementation ...
Message-ID: <20011220203630.A204@elf.ucw.cz>
In-Reply-To: <Pine.LNX.4.40.0112091647360.996-100000@blue1.dev.mcafeelabs.com> <E16DF39-00008w-00@the-village.bc.nu>
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Hi!

> > 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.

								Pavel
-- 
"I do not steal MS software. It is not worth it."
                                -- Pavel Kankovsky
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