[ntp:questions] peers with high offset on Intel Quad Core running Windows 2003

Martin Burnicki martin.burnicki at meinberg.de
Fri Aug 22 13:26:07 UTC 2008


David Woolley wrote:
> Martin Burnicki wrote:
>> This is not quite correct. Even older versions of the NTP port for
>> Windows have tried to interpolate the timer ticks using the performance
>> counter.
> I *was* aware of that, but that doesn't change the fact that ordinary
> applications only see the time updating on a tick; only ntpd benefits
> from the interpolation.  On modern Unices, all applications get high
> resolution clock readings.
> Also, I believe that the zero point of the interpolation is rather
> sensitive to scheduling delays on loaded systems.

I fully agree to all of the above. I just wanted to point out this has
nothing to do with the multimedia timer stuff which caused a different
problem under Windows.

Martin Burnicki

Meinberg Funkuhren
Bad Pyrmont

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