Re: [RFC][2.5 patch] K6-II/K6-II: enable X86_USE_3DNOW

Adrian Bunk (bunk@fs.tum.de)
Tue, 15 Apr 2003 21:37:09 +0200

On Mon, Apr 14, 2003 at 11:06:28PM +0100, Alan Cox wrote:
> On Llu, 2003-04-14 at 23:27, Dave Jones wrote:
> > On Tue, Apr 15, 2003 at 12:21:10AM +0200, Adrian Bunk wrote:
> > > If my patch is wrong and this is a RTFM please give me a hint where to
> > > find the "M".
> > >
> > > The AMD K6-II and K6-III do support 3DNow!
> >
> > The 3dnow memory copies aren't a win on anything
> > earlier than an Athlon iirc.
>
> Under 1% on a K6. The processor is so horribly memory bound the
> actual copy function is borderline irrelevant. If its not in the
> K6-III cache its not arriving in a hurry

Ah thanks, this is the information I didn't know.

cu
Adrian

-- 


       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed


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