Problem with GPSD refclock

Gary E. Miller gem at
Thu Jan 26 03:11:00 UTC 2017

Yo Rich!

On Wed, 25 Jan 2017 18:57:08 -0800
Rich Wales <richw at> wrote:

> Hi.  I'm trying ntpsec-0.9.6+195 2017-01-18T11:59:53Z on an Ubuntu
> 16.04.1 LTS Server system with a GPS reference clock managed by gpsd.

The GPS/JSON refclock never really worked.  I have been thinking
about fixing it for ntpsec.

> The following works just fine under ntpd 4.2.8p4 at 1.3265-o:

Not really, it had some nasty issues taht will byte you.  It will
seem to work, but when you turn your back...

> refclock gpsd prefer unit 0 mode 1 minpoll 3 maxpoll 6 stratum 0
> refid GPS

I'll be sure to check on that, prolly next week.

> What can people recommend I try at this point to help
> determine what the problem is?

Convert to the SHM clock.  The GPS clock is less accurate and for systems
that do not have SHM support.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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