[rescue] quad 486

[Andrew Weiss]

That's why the well designed multi-cpu machines have separate caches for
each processor... even the old 386/486 era boxen.  I think they did it by
having each cpu + cache on daughterboards.

Andrew

----- Original Message -----
From: "Brian" <bri at sonicboom.org>
To: "The Rescue List" <rescue at sunhelp.org>
Sent: Friday, February 21, 2003 1:21 PM
Subject: Re: [rescue] quad 486


> Because then there is battling over cache access, and at a lower rate than
> the processor.  Suppose the 2 procs need something different from the
> cache, or suppose sometjing was there but now isn't because it was
> displaced by a request of the other processor.  I knew someone with a dual
> proc p166, and the way he described it to me, was that a lot of apps
> actually performed worse.
>
>
> Brian
>
> The path to a desireable destination
> is often more difficult than the path to stay where you are.
>
> On Fri, 21 Feb 2003, Joshua D. Boyd wrote:
>
> > On Fri, Feb 21, 2003 at 09:39:04AM -0800, Brian wrote:
> > > I would be hesitant to use smp on a box with procs whose L2 cache is
not on
> > > chip..
> >
> > Why do you say that?
> > _______________________________________________
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