Hello, I have a network with 8 Nucs and a full Linux PC that I'm trying to synchronize using PTP.
The Nucs use hardware timestamping and phc2sys started as /usr/sbin/phc2sys -a -rr One of the Nucs is grand master. This happens after running stably for several hours. Where does this clock jump come from? Any ideas on how to debug this? See log messages below. thanks, nils on the master I get these log messages: Dec 12 04:05:44 nuc5 phc2sys[5688]: [69845.383] sys offset -7786079 s2 freq -23999999 delay 9216 Dec 12 04:05:45 nuc5 phc2sys[5688]: [69846.408] sys offset -7786030 s2 freq -23999999 delay 9216 Dec 12 04:05:46 nuc5 phc2sys[5688]: [69847.423] clockcheck: clock jumped forward or running faster than expected! Dec 12 04:05:46 nuc5 phc2sys[5688]: [69847.424] sys offset 1125899899056265 s0 freq -23999999 delay 9088 Dec 12 04:05:47 nuc5 phc2sys[5688]: [69848.427] sys offset 1125899899056140 s2 freq -23999866 delay 8704 Dec 12 04:05:48 nuc5 phc2sys[5688]: [69849.437] sys offset 1125899899056006 s2 freq +23999999 delay 8960 On the slaves I get Dec 12 04:05:42 nuc6 ptp4l[4459]: [69619.276] master offset 2999 s2 freq -23991417 path delay 17941 Dec 12 04:05:43 nuc6 ptp4l[4459]: [69620.276] master offset -1024 s2 freq -23994540 path delay 17957 Dec 12 04:05:44 nuc6 ptp4l[4459]: [69621.279] master offset -1883 s2 freq -23995706 path delay 17907 Dec 12 04:05:45 nuc6 ptp4l[4459]: [69622.279] master offset -1125899906844063 s2 freq -23999999 path delay 17999 Dec 12 04:05:46 nuc6 ptp4l[4459]: [69623.282] master offset -1125899906839714 s2 freq -23999999 path delay 17999 Dec 12 04:05:47 nuc6 ptp4l[4459]: [69624.283] master offset -1125899906835490 s2 freq -23999999 path delay 17999 Dec 12 04:05:48 nuc6 ptp4l[4459]: [69625.284] master offset -1125899897336338 s2 freq -23999999 path delay 17999 -- Dr. Nils Hasler +49 174 175 66 42 www.TheCaptury.com The Captury GmbH, Saarbruecken, Germany Amtsgericht Saarbrücken, HRB 101327 Executive Director: Nils Hasler _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
