Re: [Linuxptp-users] Output of ptp4l

[<Tim...@de...>]

Please correct me if I'm wrong ...

master offset     113817 : the offset time of the two ptp clocks in ns
s0-2:      the connection stage of ptp4l
adj  +12655: Here I'm not sure, because on my tests it always was called "freq". It should be the servo rate to adjust the time
path delay 53184: the delay of your Ethernet connection

But the values are pretty hight.

Mine are about :
ptp4l[71767.156]: master offset         11 s2 freq +123009 path delay       719

Are you using SW time stamping or HW time stamping?

Keep in mind to use the phc2sys program to set the system time, if you want to use the syncronized time as system time.

- Benny

Von: Ledda William EXT [mailto:Wil...@it...]
Gesendet: Mittwoch, 15. Mai 2013 09:29
An: lin...@li...
Betreff: [Linuxptp-users] Output of ptp4l

Hi all,
I'm newbie user of linuxptp. I need some help to understand the output produced by ptp4l.

ptp4l[1821211.588]: port 1: INITIALIZING to LISTENING on INITIALIZE
ptp4l[1821211.592]: port 0: INITIALIZING to LISTENING on INITIALIZE
ptp4l[1821212.510]: port 1: new foreign master 008063.fffe.db5e00-15
ptp4l[1821216.510]: selected best master clock 00a069.fffe.01c094
ptp4l[1821216.510]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[1821216.705]: port 1: minimum delay request interval 2^3
ptp4l[1821218.509]: master offset     171578 s0 adj      +0 path delay      53481
ptp4l[1821219.509]: master offset     172021 s0 adj      +0 path delay      53481
ptp4l[1821220.510]: master offset     174685 s0 adj      +0 path delay      53481
ptp4l[1821221.509]: master offset     177810 s1 adj      +0 path delay      53481
ptp4l[1821222.509]: master offset        753 s2 adj     +76 path delay      53481
ptp4l[1821222.509]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[1821223.509]: master offset      17736 s2 adj   +1792 path delay      53481
ptp4l[1821224.509]: master offset      17754 s2 adj   +1812 path delay      53481
ptp4l[1821225.508]: master offset      38232 s2 adj   +3898 path delay      53481
ptp4l[1821226.508]: master offset      47856 s2 adj   +4908 path delay      53481
ptp4l[1821227.508]: master offset      57136 s2 adj   +5893 path delay      53481
ptp4l[1821228.508]: master offset      67594 s2 adj   +7006 path delay      53481
ptp4l[1821229.508]: master offset      75302 s2 adj   +7853 path delay      53481
ptp4l[1821230.508]: master offset      71573 s2 adj   +7551 path delay      53481
ptp4l[1821231.508]: master offset      77021 s2 adj   +8173 path delay      53481
ptp4l[1821232.508]: master offset      90924 s2 adj   +9654 path delay      53481
ptp4l[1821233.508]: master offset      93511 s2 adj  +10006 path delay      53481
ptp4l[1821234.508]: master offset      92060 s2 adj   +9953 path delay      53481
ptp4l[1821235.508]: master offset      93137 s2 adj  +10154 path delay      53481
ptp4l[1821236.508]: master offset     102429 s2 adj  +11186 path delay      53481
ptp4l[1821237.507]: master offset     109941 s2 adj  +12047 path delay      53481
ptp4l[1821238.507]: master offset     106116 s2 adj  +11771 path delay      53184
ptp4l[1821239.507]: master offset     113817 s2 adj  +12655 path delay      53184

....

It is not clear to me how the master offset is expressed: Is it in ns?
Could you explain the meaning of the different values?

Thanks

William