[ntp:questions] ARRGH!!! I woke up to a 50 SECOND clock error.
David J Taylor
david-taylor at blueyonder.co.uk.invalid
Tue Mar 13 18:04:38 UTC 2012
> Hi all,
> I just woke up to a 50 SECOND clock error. Prior to the error, with my
> PC locked into the GPS and the internet servers noselected, here's what
> my peerstats looked like. Baseline is the GPS. Colored lines are
> internet servers.
> My system is Windows 7, NTP 4.2.7p259, GPS GlobalSat BU-353 USB NMEA
> only with GPGGA sentence at 57,600 baud.
> If anyone can shed some light on what happened, please do. It's driving
> me bonkers. I don't believe the GPS is at fault, and I suspect NTPD.
> Thanks in advance.
As all the Internet servers agreed (in another graph you showed me), I
would suggest that you stick with the Internet servers and discard that
GPS! I hope it will be better with the PPS from the Sure board. At least
remove the noselect from the Internet servers so that NTP can do its job
properly. At the moment you are telling NTP to trust the GPS no matter
what it says. Can't think that sounds the wisest option. I might be
inclined to add noselect to the GPS and measure it against the Internet
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