[ntp:questions] Timekeeping broken on Windows XP with multimedia timer enabled (-M option)

Evandro Menezes evandro at mailinator.com
Wed Jan 20 16:55:38 UTC 2010

On Jan 20, 8:23 am, Martin Burnicki <martin.burni... at meinberg.de>
> Also, changes in the CPU clock frequency by AMD's Cool'n'Quiet or Intel's
> Speedstep can mess up the QPC results.

Actually, on systems running Windows XP or later if the HAL deternines
that this is the case, then RDTSC is not used for this function.


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