[time-nuts] ntpq output
David J Taylor
david-taylor at blueyonder.co.uk
Mon Jan 23 04:00:24 EST 2012
> The following is a few ntpq -p outputs. Just random samples over a week.
> I seem to periodically have large offset.
> I'm open to suggest how to improve this if the numbers don't look
> Please trim the raw data to keep the size of any replies as small as
>> remote refid st t when poll reach delay offset
>> +235-69-67-68.st 220.127.116.11 3 u 190 1024 377 88.459 -7.813
>> *cheezum.mattnor 18.104.22.168 2 u 614 1024 377 63.319 -2.871
>> +rigel.jeffkapla 22.214.171.124 3 u 90 1024 377 88.959 -5.622
>> +w1-wdc.ipv4.got 10.0.77.54 4 u 86 1024 377 91.660 -5.236
Your delays look awful. I would hope for 15-30 ms over the Internet.
Either you have a poor connection, or your servers are a continent away.
Can you find servers nearer (in network terms) to you? Have you tried the
pool servers for your region? If you can't improve the delays, you
/might/ get an improvement by polling more frequently, setting maxpoll=9
for example - making the maximum interval 2^9 i.e. 512 seconds.
The obvious improvement is to get a startum-1 server yourself, which may
not cost the earth - perhaps US $30-50 if you have somewhere with a 50%
sky view. I have notes about the Garmin GPS 18x LVC and Sure GPS board on
my NTP page:
SatSignal software - quality software written to your requirements
Email: david-taylor at blueyonder.co.uk
More information about the time-nuts