On Jan 21, 4:43 am, Martin Burnicki <martin.burni...@meinberg.de> wrote: > AFAIK this should only affect the TSCs, so the setting should not matter at > all if the PM timer is used.
Another detail on RDTSC: newer cores, such as Intel's Core2 and AMD's Phenom, return a constant-rate readout by RDTSC. In actuality, the counter that RDTSC is driven by the FSB clock instead of by the CPU clock and, even if the later changes due to power management, it's adjusted accordingly. But it all boils down to the HAL, which will use whatever's necessary to make sure that what QueryPerformanceCounter returns is independent of the CPU clock. HTH _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
