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SubjectRe: Intel P6 vs P7 system call performance
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On ons, 2002-12-11 at 19:50, H. Peter Anvin wrote:
> Terje Eggestad wrote:
>
> >
> > PS: rdtsc on P4 is also painfully slow!!!
> >
>
> Now that's just braindead...
>

It takes about 11 cycles on athlon, 34 on PII, and a whooping 84 on P4.

For a simple op like that, even 11 is a lot... Really makes you wonder.


> -hpa

TJ

--
_________________________________________________________________________

Terje Eggestad mailto:terje.eggestad@scali.no
Scali Scalable Linux Systems http://www.scali.com

Olaf Helsets Vei 6 tel: +47 22 62 89 61 (OFFICE)
P.O.Box 150, Oppsal +47 975 31 574 (MOBILE)
N-0619 Oslo fax: +47 22 62 89 51
NORWAY
_________________________________________________________________________

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