After some further digging, I now understand the behavior of this (which turns out to be fully as intended):
The automotive slave config file overrides the default value of 'servo_offset_threshold' to 30: ptp4l[26251.269]: config item (null).servo_offset_threshold is 30 The (default) value of 'servo_num_offset_values' is 10: ptp4l[26251.269]: config item (null).servo_num_offset_values is 10 This leads to the slave transitioning from the servo state SERVO_LOCKED to SERVO_LOCKED_STABLE after 'servo_num_offset_vlaues' (10) reports of accuracy <= 'servo_offset_threshold' (30) are reached: ptp4l[26334.041]: PI servo: sync interval 1.000 kp 0.700 ki 0.300000 The accuracy is the first value in the log lines reported with "rms ...", e.g.: ptp4l[26333.540]: rms 24 max 60 freq +5559 +/- 33 delay 8899 +/- 0 --> 24 I would appreciate, if in that case some message like "Servo transitioning from SERVO_LOCKED to SERVO_LOCKED_STABLE" would be logged. I thought I saw something like that in other profiles, but this seems not reported using the default automotive-slave.cfg Thanks again for the help Richard! BR Daniel Internal -----Ursprüngliche Nachricht----- Von: Hopf, Daniel Gesendet: Dienstag, 28. November 2023 17:19 An: Richard Cochran <richardcoch...@gmail.com> Cc: linuxptp-users@lists.sourceforge.net Betreff: AW: [Linuxptp-users] Slave takes VERY long to sync to Master using Automotive profile OK, to phrase it in my understanding: Master sends SYNC slower than slave "summary_interval": ptp4l slave reports the sample by "master offset ..." Master sends SYNC faster than slave "summary_interval" ptp4l slave reports the (average) statistics by "rms ..." Is that correct? Then the only unclear point left for me is how or when the *MASTER* decides to switch from sending SYNCs every 125 ms to sending SYNCs every one second. This seems arbitrary in my test setup. Thanks Daniel _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
