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View:  Topic list, Topic summary Topics 1 - 10 of 14315  Older »
Description: The network time protocol.
 

NTP/Raspberry Pi - user-mode PPS added 
  I've now add Folkert's user-mode method to my NTP/Raspberry Pi notes here: [link] Comments and corrections welcomed. -- Cheers, David Web: [link]
By David Taylor  - Jun 18 - 1 new of 1 message    

ntpd connect gpsd shared memory driver 
  Based on poor luck with ntpd/pps, I'm trying to have ntpd use the shared memory driver provided by gpsd. Do I need to give a special flag to configure for ntp to tell it to build in support for the shared memory driver? Using this for my ntp.conf --- server 127.127.28.0 minpoll 4 fudge 127.127.28.0 refid NMEA... more »
By Richard Cagley  - Jun 17 - 30 new of 30 messages    

What should the poll be for the shared memory driver (type 28)? 
  What should the poll be for the shared memory driver (type 28)? This Web page: [link] suggests that the driver internally has a poll interval of 1 second, another document I've seen suggests setting: server 127.127.28.1 minpoll 1 prefer... more »
By David Taylor  - Jun 17 - 10 new of 10 messages    

pps breaks when nmea is enabled for ntpd 
  I have a TI DM8168 processor and a u-blox gps. If I enable an internet server and pps, then pps works great server clock.redhat.com iburst prefer minpoll 4 maxpoll 4 server 127.127.22.0 minpoll 4 maxpoll 4 fudge 127.127.22.0 flag3 1 However, if I add an NMEA server to my ntp.conf file like this... more »
By Richard Cagley  - Jun 14 - 18 new of 18 messages    

ntp-b.boulder.nist.gov not synchronized 
  Since about 1800 Eastern time (US) on 10Jun, ntp-a.boulder.nist.gov is sending "clock unsynchronized". This is one of two NIST-supported, _authenticated_, timeservers (the other is ntp-b.nist.gov). We are regulatorily required to confirm twice daily that our system's time (derived from GPS) is within 1 second of "official" US Gov't time... more »
By Jason  - Jun 13 - 5 new of 5 messages    

hello,I have a question about NTPD service in LAN use a host as time source two other host as client 
  I‘v recently start a work about NTP,it's about a ntp sync in winodws LAN,no GPS,only a host as server,two host as client.But Ican't sync the time ,because the server clock and reftime is not the same.I use ntpq-c rv to query the time,but I,v got a different reftime and clock,especially I adjust the server time to a time before it .... more »
By xiaoniao54...@gmail.com  - Jun 12 - 5 new of 5 messages    

Standalone PPS 
  Hello I would like to get some points of view before starting to write some code. I am trying run an electronic board I designed. A super stable OXCO generates pulse per second. I don't have any absolute reference time. The pulse has a constant but unpredictable phase due to the state of the electronics a power up.... more »
By patrick200075...@gmail.com  - Jun 10 - 9 new of 9 messages    

NTP Server Synchronizing with the incorrect NTP server 
  Problem: I configured my NTP server in Linux to use the US Pool of NTP Servers in /etc/ntp.conf. I restarted the NTP service many times and the actual server many times, but it was not using the pool. I was verifying this by using the ntpq -p command. It was using a time server it picked up via DHCP when it was plugged into a completely different network. I had no idea where it was getting this information.... more »
By jhunt1...@gmail.com  - Jun 8 - 2 new of 2 messages    

Behaved ... Limited ... KODed 
  Hello, I thought I understood how a client's rate control indicator goes from being well behaved (.) to limited (L) to KoD (K) but after trying to explain this to someone today it is obvious that I do not. A server running the most recent dev release (or post whatever version changed minimum to seconds instead of 2**n)... more »
By Doug Calvert  - Jun 7 - 3 new of 3 messages    

UK - MSF outages between Monday July 01 to Thursday July 18 
  UK - MSF outages between Monday July 01 to Thursday July 18 See: [link] -- Cheers, David Web: [link]
By David Taylor  - Jun 6 - 1 new of 1 message    

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