running without pool or other servers

Gary E. Miller gem at
Mon Sep 11 20:11:02 UTC 2017

Yo shouldbe!

On Mon, 11 Sep 2017 15:17:37 +0100
shouldbe q931 <shouldbeq931 at> wrote:

> I am attempting to run ntpsec in a "standalone" instance where it is
> only provided time and PPS from a GPS receiver (via gpsd).
> The relevant lines in ntp.conf I have arrived at are
> # GPS PPS reference (NTP1)
> refclock shm unit 1 refid PPS minpoll 0 maxpoll 0
> # GPS Serial data reference (NTP0)
> refclock shm unit 0 prefer minpoll 4 maxpoll 4 time1 +0.118 stratum 1
> refid GPS flag1 1

You are missing prefer on SHM(1).  Otherwise ntpd does not know to prefer
the PPS over the NMEA time.  Some would also add noselect to SHM(0).

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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