This is mine, most online sources are commented out, as internet is very limited here.
Brian On Fri, 24 Feb 2017 16:57:15 +0100 Fabian Schörghofer <fabian.schoe...@gmail.com> wrote: > What does your chrony.conf look like now? > > I have a similar problem, (also using gpsd and Raspberry Pi with > GPIO-PPS). > > Am 24.02.2017 16:53, schrieb Brian Gieryk: > > Bill, PPS is being referenced as GPS now. > > > > Miroslav, that was initial fix. > > > > Now, NMEA offset is +198ms std dev is 7301us > > > > GPS (PPS) is offset +23 us std dev is 19us. > > > > Brian > > > > Sent from my iPhone > > > >> On Feb 24, 2017, at 08:48, Miroslav Lichvar <mlich...@redhat.com> > >> wrote: > >> > >>> On Fri, Feb 24, 2017 at 08:44:02AM -0700, Brian Gieryk wrote: > >>> Did as suggested, and seems to be working. NMEA is showing +/- > >>> 2599 us and GPS (PPS) is showing +/- 1831 us. > >> > >> 1800 microseconds is not that good for a PPS. Usually it's just a > >> few microseconds, or better. What does the "chronyc sourcestats" > >> command print? > >> > >> -- > >> Miroslav Lichvar > >> > >> -- > >> To unsubscribe email chrony-users-requ...@chrony.tuxfamily.org > >> with "unsubscribe" in the subject. > >> For help email chrony-users-requ...@chrony.tuxfamily.org > >> with "help" in the subject. > >> Trouble? Email listmas...@chrony.tuxfamily.org. > >> > > >
# This the default chrony.conf file for the Debian chrony package. After # editing this file use the command 'invoke-rc.d chrony restart' to make # your changes take effect. John Hasler <jhas...@debian.org> 1998-2008 # See www.pool.ntp.org for an explanation of these servers. Please # consider joining the project if possible. If you can't or don't want to # use these servers I suggest that you try your ISP's nameservers. We mark # the servers 'offline' so that chronyd won't try to connect when the link # is down. Scripts in /etc/ppp/ip-up.d and /etc/ppp/ip-down.d use chronyc # commands to switch it on when a dialup link comes up and off when it goes # down. Code in /etc/init.d/chrony attempts to determine whether or not # the link is up at boot time and set the online status accordingly. If # you have an always-on connection such as cable omit the 'offline' # directive and chronyd will default to online. # # Note that if Chrony tries to go "online" and dns lookup of the servers # fails they will be discarded. Thus under some circumstances it is # better to use IP numbers than host names. #server 0.debian.pool.ntp.org offline minpoll 8 #server 1.debian.pool.ntp.org offline minpoll 8 #server 2.debian.pool.ntp.org offline minpoll 8 #server 3.debian.pool.ntp.org offline minpoll 8 # Look here for the admin password needed for chronyc. The initial # password is generated by a random process at install time. You may # change it if you wish. keyfile /etc/chrony/chrony.keys # Set runtime command key. Note that if you change the key (not the # password) to anything other than 1 you will need to edit # /etc/ppp/ip-up.d/chrony, /etc/ppp/ip-down.d/chrony, /etc/init.d/chrony # and /etc/cron.weekly/chrony as these scripts use it to get the password. commandkey 1 # I moved the driftfile to /var/lib/chrony to comply with the Debian # filesystem standard. # driftfile /var/lib/chrony/chrony.drift # Comment this line out to turn off logging. log tracking measurements statistics refclocks logdir /var/log/chrony # Stop bad estimates upsetting machine clock. maxupdateskew 100.0 # Dump measurements when daemon exits. dumponexit # Specify directory for dumping measurements. dumpdir /var/lib/chrony # Let computer be a server when it is unsynchronised. local stratum 10 # Allow computers on the unrouted nets to use the server. allow 10/8 allow 192.168/16 allow 172.16/12 # This directive forces `chronyd' to send a message to syslog if it # makes a system clock adjustment larger than a threshold value in seconds. logchange 0.5 # This directive defines an email address to which mail should be sent # if chronyd applies a correction exceeding a particular threshold to the # system clock. # mailonchange root@localhost 0.5 # This directive tells chrony to regulate the real-time clock and tells it # Where to store related data. It may not work on some newer motherboards # that use the HPET real-time clock. It requires enhanced real-time # support in the kernel. I've commented it out because with certain # combinations of motherboard and kernel it is reported to cause lockups. # rtcfile /var/lib/chrony/chrony.rtc # If the last line of this file reads 'rtconutc' chrony will assume that # the CMOS clock is on UTC (GMT). If it reads '# rtconutc' or is absent # chrony will assume local time. The line (if any) was written by the # chrony postinst based on what it found in /etc/default/rcS. You may # change it if necessary. # rtconutc server time.nist.gov offline minpoll 8 # server 1.us.pool.ntp.org offline minpoll 8 # server 2.us.pool.ntp.org offline minpoll 8 # server 3.us.pool.ntp.org offline minpoll 8 driftfile /var/lib/chrony/drift allow # set larger delay to allow the NMEA source to overlap with # the other sources to avoid falseticker status # offline sources refclock SHM 0 refid NMEA noselect refclock PPS /dev/pps0 lock NMEA refid GPS