Re: [PATCH] Athlon bug stomper. Pls apply.

From: Ignacio Vazquez-Abrams (ignacio@openservices.net)
Date: Wed Sep 19 2001 - 15:40:05 EST

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On Wed, 19 Sep 2001, Ignacio Vazquez-Abrams wrote:

> On Wed, 19 Sep 2001, Ignacio Vazquez-Abrams wrote:
>
> > From an Athlon 1050/KT133 (middle 3 of 5):
> >
> > Clear:
> > warm up run: 16653.33
> > 2.4 non MMX: 10803.33
> > 2.4 MMX fallback: 10576.67
> > 2.4 MMX version: 9824.33
> > faster_copy: 4416.67
> > even_faster: 4316.67
> >
> > Copy:
> > warm up run: 15268.33
> > 2.4 non MMX: 23765.33
> > 2.4 MMX fallback: 23629.33
> > 2.4 MMX version: 15316.67
> > faster_copy: 9352.00
> > even_faster: 9333.33
>
> Please note that the 'faster_copy' under clear is in fact 'faster_clear_page'.
> It got messed up in the post-processing of the results.

After Athlon patch:

clear_page() tests
clear_page function 'warm up run' took 17860 cycles per page
clear_page function '2.4 non MMX' took 11805 cycles per page
clear_page function '2.4 MMX fallback' took 11777 cycles per page
clear_page function '2.4 MMX version' took 12003 cycles per page
clear_page function 'faster_clear_page' took 4416 cycles per page
clear_page function 'even_faster_clear' took 4315 cycles per page

copy_page() tests
copy_page function 'warm up run' took 14930 cycles per page
copy_page function '2.4 non MMX' took 23337 cycles per page
copy_page function '2.4 MMX fallback' took 23314 cycles per page
copy_page function '2.4 MMX version' took 20293 cycles per page
copy_page function 'faster_copy' took 9159 cycles per page
copy_page function 'even_faster' took 9071 cycles per page

This is with 2.4.9-ac12-preempt1 in both cases and niced to -20. Subsequent
runs are very similar.

-- Ignacio Vazquez-Abrams <ignacio@openservices.net>

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