Re: Intel P6 vs P7 system call performance

Terje Eggestad (terje.eggestad@scali.com)
12 Dec 2002 10:42:56 +0100

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

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


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