Messages in this thread | | | Date | Tue, 15 Dec 1998 01:14:40 +0000 | From | Jamie Lokier <> | Subject | Re: [PATCH-wanted] Pentium FPU memcpy |
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On Fri, Dec 11, 1998 at 11:35:34PM -0500, Aaron Tiensivu wrote: > A long long long time ago when I had a P166, this patch ruled my world with > an iron fist. I was recently given a P60 which I'm using as a > router/e-mail/internet server for my house. I'm hoping someone out there > either has, or is maintaining this patch. Any links/mimes/etc of it would > be greatly appreciated. :) > > It's impressive how well a P60 runs under Linux 2.1, and I'm not being > sarcastic.
Just using the copy & zero code in <asm/string-486.h> would give a big boost for the Pentium, I suspect. I believe Linus when he says that file contains bugs, and I wouldn't be at all surprised if the copy isn't optimal for a Pentium. But it'll be a big improvement over `rep movsl'.
We don't care about the other string functions anyway -- my vote is for ditching them. Just optimise the zero and copy functions. Any takers?
(Oh yeah, and move those huge codes _out of line_ too -- those huge unrolled loops don't need to be inline and take valuable memory).
-- Jamie
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