"Ron Frazier (NTP)" <timekeepingntpl...@c3energy.com> wrote in message
news:4f65006d.4090...@c3energy.com...
[]
Come to think of it, my comment about the polling interval not
increasing may only apply to a local refclock, not a local server.
You may be right - all the servers on this test system are Internet
servers.
Can you elaborate more about what NTPD_USE_INTERP_DANGEROUS does?
Sincerely,
Ron
Overnight results are here:
http://www.satsignal.eu/ntp/Win-8+Internet.html
As you can see, jitter is under a millisecond, with the local (noselect)
server showing about half a millisecond of jitter, and the Internet
servers between about 3 and just over 6 milliseconds.
NTPD_USE_INTERP_DANGEROUS if set, forces interpolation on Windows. With
Windows XP or earlier, Interpolation works well, but not on Vista or
later, so under certain conditions, NTP disables interpolation as
mentioned here:
http://lists.ntp.org/pipermail/questions/2011-November/030904.html
You can enable interpolation, and you may get better results. If not,
jitters will have a floor of about 0.977 milliseconds.
Cheers,
David
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