Hi everyone, I use the command "ptp4l -m -q -i eth1 -s -S" to test my PTP device in slave mode and with software time stamping. It is connected back-to-back with a grandmaster clock.
>From the ptp4l output, the last state change message "UNCALIBRATED to SLAVE on >MASTER_CLOCK_SELECTED" indicates successful synchronization with the PTP >master clock and the statistics are printed out. However, I don't see the >messages about the calculated offset from master, for example >"ptp4l[1821225.525]: master offset 17756 s2 adj +1812 path delay 53581", >do they only apply to hardware time stamping? If that is the case then which >one of the shown statistics is equivalent to "master offset", otherwise what >did I miss? / #ptp4l -m -q -i eth1 -s -S ptp4l[889716.134]: port 1: get_ts_info not supported ptp4l[889716.136]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[889716.136]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[889717.665]: port 1: new foreign master 00b0ae.fffe.02d103-1 ptp4l[889721.665]: selected best master clock 00b0ae.fffe.02d103 ptp4l[889721.665]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[889722.412]: port 1: minimum delay request interval 2^-7 ptp4l[889723.071]: rms 5248496 max 5248784 freq +1000000000 +/- 0 delay -214 +/- 0 ptp4l[889724.071]: rms 5246874 max 5247280 freq +1000000000 +/- 0 delay -307 +/- 24 ptp4l[889725.071]: rms 5245931 max 5246144 freq +1000000000 +/- 0 delay -76 +/- 74 ptp4l[889726.071]: rms 5244709 max 5244730 freq +1000000000 +/- 0 delay -148 +/- 107 ptp4l[889727.071]: rms 5247721 max 5251322 freq +1000000000 +/- 0 delay 317 +/- 916 ptp4l[889728.071]: rms 5247639 max 5247912 freq +1000000000 +/- 0 delay -153 +/- 92 ptp4l[889729.071]: rms 5246445 max 5246760 freq +1000000000 +/- 0 delay -151 +/- 93 ptp4l[889730.071]: rms 5245002 max 5245186 freq +1000000000 +/- 0 delay -154 +/- 98 ptp4l[889731.071]: rms 5244443 max 5244774 freq +1000000000 +/- 0 delay -69 +/- 71 ptp4l[889732.071]: rms 5243877 max 5244106 freq +1000000000 +/- 0 delay -39 +/- 42 ptp4l[889733.071]: rms 5246876 max 5248038 freq +1000000000 +/- 0 delay 314 +/- 712 ptp4l[889734.071]: rms 5245014 max 5245174 freq +1000000000 +/- 0 delay -137 +/- 69 ptp4l[889735.071]: rms 5244071 max 5244604 freq +1000000000 +/- 0 delay -115 +/- 114 ptp4l[889736.071]: rms 5243134 max 5243420 freq +1000000000 +/- 0 delay -92 +/- 80 ptp4l[889737.071]: rms 5241706 max 5242180 freq +1000000000 +/- 0 delay -159 +/- 111 ptp4l[889738.071]: rms 5243572 max 5246424 freq +1000000000 +/- 0 delay 728 +/- 1022 ptp4l[889739.071]: rms 5243816 max 5244130 freq +1000000000 +/- 0 delay -80 +/- 72 ptp4l[889740.071]: rms 5242200 max 5242498 freq +1000000000 +/- 0 delay -158 +/- 116 ptp4l[889741.071]: rms 5240775 max 5241232 freq +1000000000 +/- 0 delay -151 +/- 118 ptp4l[889742.071]: rms 5239166 max 5239586 freq +1000000000 +/- 0 delay -198 +/- 113 ptp4l[889743.071]: rms 5240531 max 5242836 freq +1000000000 +/- 0 delay -107 +/- 247 ptp4l[889744.071]: rms 5242046 max 5242508 freq +550000000 +/- 450000000 delay -132 +/- 111 ptp4l[889744.571]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[889745.071]: rms 5240142 max 5240624 freq +99348906 +/- 1926 delay -199 +/- 147 ptp4l[889746.071]: rms 5238484 max 5238688 freq +99341169 +/- 1960 delay -193 +/- 121 ptp4l[889747.071]: rms 5237306 max 5237758 freq +99333375 +/- 1929 delay -136 +/- 102 Thanks! Daniel
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