Re: Error in x86 CPU capabilities starting with test5/6

[Christoph Rohland]

Hi Tigran,

On Fri, 17 Nov 2000, Tigran Aivazian wrote:
> On Fri, 17 Nov 2000, Andi Kleen wrote:
>> [of course rdtsc only works properly on UP or with bind_cpu()]
> 
> I thought Linux kernel does synchronize them on boot? So, you are
> saying I cannot rely on this being 100% correct?

Yes, it does so far. And if we cannot assume this to be correct in the
microsecond scale on smp machines with homogenous non-powersaving cpus
we will loose on some benchmarks. So far it works on all our servers.

Greetings
                Christoph

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