Re: Linux-asm (was A patch for linux 2.1.127)

ralf@uni-koblenz.de
Tue, 17 Nov 1998 12:06:19 +0100


On Sun, Nov 15, 1998 at 11:45:10PM +0100, Peter T. Breuer wrote:

> So 30% speed increase would amount to 8 months hardware lead in speed.
> I don't think that's worth it. I also don't think we ought to rewrite
> the microcode of the pentium II to support us better, although I think
> that's possible ...

Microcode is dark magic in some sense. And there is no reason to expect it
to make huge differences in performance. Actually after once debugging
Linux/MIPS running on a unborn CPU simulated at 10 instructions per second
on a dual Ultrasparc I'm healed from trying to mess with CPU internals.

Ralf

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