I have implemented time synchronization with ptp4l using software timestamping.
My requirement is to sync the slaves very fast after the master clock steps.
How can I make the slaves step immediately after they recognize a step of the
master clock?
I tried this config file for the slave:
[global]
verbose 1
time_stamping software
slaveOnly 1
step_threshold 0.001
first_step_threshold 0.00001
fault_reset_interval -128
[eth0.2]
When I stepped the master clock I had this result on the slave, no matter what
value I use for
fault_reset_interval. I have always the s0 for 16 seconds.
ptp4l[20016.779]: master offset -838788 s2 freq -77766 path delay 37419
ptp4l[20017.778]: master offset -1251433 s0 freq -77766 path delay 37419
ptp4l[20017.779]: port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT
ptp4l[20018.778]: master offset -1669199 s0 freq -77766 path delay 37454
ptp4l[20019.778]: master offset -2119251 s0 freq -77766 path delay 73117
ptp4l[20020.777]: master offset -2544222 s0 freq -77766 path delay 81722
ptp4l[20021.777]: master offset -2959934 s0 freq -77766 path delay 86377
ptp4l[20022.777]: master offset -3370656 s0 freq -77766 path delay 86377
ptp4l[20023.776]: master offset -3827576 s0 freq -77766 path delay 126573
ptp4l[20024.776]: master offset -4256688 s0 freq -77766 path delay 174966
ptp4l[20025.776]: master offset -4702737 s0 freq -77766 path delay 174966
ptp4l[20026.775]: master offset -5128022 s0 freq -77766 path delay 180869
ptp4l[20027.775]: master offset -5539745 s0 freq -77766 path delay 180869
ptp4l[20028.775]: master offset -5926680 s0 freq -77766 path delay 150756
ptp4l[20029.774]: master offset -6337803 s0 freq -77766 path delay 148828
ptp4l[20030.774]: master offset -6754509 s0 freq -77766 path delay 148828
ptp4l[20031.774]: master offset -7167231 s0 freq -77766 path delay 148828
ptp4l[20032.773]: master offset -7584545 s0 freq -77766 path delay 150756
ptp4l[20033.773]: master offset -7977596 s0 freq -77766 path delay 150756
ptp4l[20034.773]: master offset -8410324 s1 freq -415350 path delay 150756
ptp4l[20036.773]: master offset -158698 s2 freq -431379 path delay 145125
ptp4l[20036.773]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[20037.773]: master offset -217699 s2 freq -437496 path delay 145125
ptp4l[20038.773]: master offset -242286 s2 freq -440197 path delay 118919
Regards
Christian
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