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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... -- Casualities in World Trade Center: ~3k dead inside the building, cryptography in U.S.A. and free speech in Czech Republic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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