[ntp:questions] ntp-4.2.6p5 on Win 7 x64
martin.burnicki at meinberg.de
Wed Jul 16 10:46:38 UTC 2014
> This machine dual boots Mint 17 x64 and Win 7 SP1 x64.
> I have set the hardware clock to UTC.
> Mint 17 and Win 7 run on local time.
> I need reasonable time sync for WSJTX < 1 second.
> On Mint 17 ntp from the repo works well with offsets in the low
> tens of milliseconds, sometimes < 10ms.
> On Win 7 I have installed ntp-4.2.6p5 at spider-man-2-win32-setup.exe.
> This does not seem to work properly.
> The jitter and offset 'diverge'...
> C:\Users\nick>ntpq -p
> remote refid st t when poll reach delay offset
> +head1.mirror.ca 184.108.40.206 2 u 19 64 77 33.361 1150.37
> +rad.22pf.org 220.127.116.11 3 u 10 64 377 30.518 1146.44
> +ntp.oceanmediag 18.104.22.168 2 u 13 64 77 138.709 1201.64
> *ntp0.sccis.net 22.214.171.124 2 u 18 64 77 36.415 1147.99
> These are not the worst offsets I've seen; 3 seconds is not unusual.
> Restarting the service 'fixes' it for a few minutes, then it all begins to
> 'diverge' again.
This is not related to whether the RTC runs on UTC or local time.
Please see an earlier post from me
which describes why (and how) you should upgrade the NTP version, and
why (and how) you should use different minpoll/maxpoll values.
Please let us know if my suggestions fix your problem.
> Using the default ntp.conf except for "pool uk.pool.ntp.org iburst".
minpoll 6 and maxpoll 6 or maxpoll 7, plus an upgrade of the NTP
binaries on your Windows machine.
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