Re: [PATCH] [2.4] [2.5] [i386] Add support for GCC 3.1

Alan Cox (alan@lxorguk.ukuu.org.uk)
26 May 2002 22:36:11 +0100


On Sun, 2002-05-26 at 21:02, rwhron@earthlink.net wrote:
> Another processor config could be CONFIG_K62.
> gcc-3.1 -march=k6-2 benchmarks a little better
> than -march=k6. Adding CONFIG_XF86_USE_3DNOW=y
> seems to help a little too.

Make sure you benchmark FPU intensive use when testing USE_3DNOW. I've
seen several situations where it looks marginally better until you
actually measure two things - memory bandwidth available to user
programs, and also FPU performance, especially of FPU heavy apps that
schedule a lot (eg Quake)

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