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Subject: Re: Intel P6 vs P7 system call performance
From: Arjan van de Ven <arjanv@redhat.com>
To: Terje Eggestad <terje.eggestad@scali.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Dave Jones <davej@codemonkey.org.uk>
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On Thu, 2002-12-12 at 10:42, Terje Eggestad wrote:

> 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.

wasn't rdtsc also supposed to be a pipeline sync of the cpu?
(or am I confusing it with cpuid)
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