"Terje Mathisen" <terje.mathisen at hda.hydro.com> wrote in message news:bj5hpv$m0a$2 at osl016lin.hda.hydro.com... > TSC is mostly useless on SMP machines unfortunatly, unless you can pin > your process, including all PPS interrupt handlers, to a single CPU. Or if you can sync the TSCs, like Linux does. DS