Messages in this thread |  | | From | Christoph Rohland <> | Subject | Re: Error in x86 CPU capabilities starting with test5/6 | Date | 17 Nov 2000 15:30:26 +0100 |
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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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