Messages in this thread | | | Date | Thu, 19 Dec 2002 23:34:51 +0100 | From | Pavel Machek <> | Subject | Re: Intel P6 vs P7 system call performance |
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Hi!
> > User on cpu1 reads time, communicates it to cpu2, but cpu2 is drifted > > -50ns, so it reads time "before" time reported cpu1. And gets confused. > > > > How can you get that communication to happen in < 50 ns?
I'm not sure I can do that, but I'm not sure I can't either. CPUs snoop each other's cache, and that's supposed to be fast...
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