Nick wrote:
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 [email protected].
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
jitter
==============================================================================
+head1.mirror.ca 195.66.241.2 2 u 19 64 77 33.361 1150.37
398.012
+rad.22pf.org 164.47.15.177 3 u 10 64 377 30.518 1146.44
381.704
+ntp.oceanmediag 140.203.204.77 2 u 13 64 77 138.709 1201.64
438.477
*ntp0.sccis.net 193.62.22.74 2 u 18 64 77 36.415 1147.99
385.595
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
http://lists.ntp.org/pipermail/questions/2013-November/036676.html
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.
Martin
--
Martin Burnicki
Meinberg Funkuhren
Bad Pyrmont
Germany
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