Dear all I am trying to use NTP to synchronize embedded audio-video products (running Linux). Once the products are synchronized everything is working very well, but I have a problem at start up. I use a set of products to work as peers, as can be see in the example of an ntp.config file:
peer 192.168.1.80 iburst burst prefer minpoll 4 maxpoll 4 prefer peer 192.168.1.98 iburst burst prefer minpoll 4 maxpoll 4 prefer peer 192.168.1.162 iburst burst prefer minpoll 4 maxpoll 4 server 127.127.1.0 iburst # local clock (LCL) fudge 127.127.1.0 stratum 6 # LCL is unsynchronized flag1 0 flag2 0 flag3 0 flag4 0 stratum 0 In addition a set of products are used which are only NTP clients. As can be seen I use the local crystal as fall back, and this is were the problem arises. When the first of the peers is started it takes about 4 minutes before is has synchronized with to its local crystal and further 3 minutes before a clients can see that the server is in synch, i.e. starting its synch process. 8 Oct 15:28:16 ntpd[6970]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010) 8 Oct 15:28:17 ntpd[6970]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014) 8 Oct 15:31:27 ntpd[6970]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521) 8 Oct 15:31:27 ntpd[6970]: synchronized to LOCAL(0), stratum 10 8 Oct 15:31:27 ntpd[6970]: kernel time sync disabled 0041 8 Oct 15:31:27 ntpd[6970]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_local_proto, 3 events, event_peer/strat_chg' (0x534) 8 Oct 15:31:27 ntpd[6970]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543) 8 Oct 15:32:33 ntpd[6970]: kernel time sync enabled 0001 How can I get the initial synchronization to a local crystal down from several minutes to a few seconds? Thanks in advance Bert Petersen Bang & Olufsen A/S _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
