[Linuxptp-users] phc2sys: Obtain current accuracy values via tool - not by parsing log file

[Koehrer M. (ETAS/ESW5) <mat...@et...>]

Hi all,

I have two PCs synchronized with linuxptp (V1.4 or V1.5 - the question is valid for both versions).
On both PCs I run the following commands:
/usr/local/sbin/ptp4l -i eth1 -p /dev/ptp1 -f /etc/linuxptp.conf
and
/usr/local/sbin/phc2sys -s /dev/ptp1 -w -u 15 -l 6

This works and I can see in the log file of the PCs the synchronization accuracy.
Example of the logging in my system logfile:
Jan  7 13:23:59 pcA phc2sys: [2964.861] rms   17 max   31 freq  -8176 +/-  18 delay  2687 +/-  21
Jan  7 13:24:14 pcA phc2sys: [2979.862] rms   19 max   46 freq  -8167 +/-  18 delay  2690 +/-  20
Jan  7 13:24:29 pcA phc2sys: [2994.863] rms   23 max   45 freq  -8158 +/-  20 delay  2690 +/-  24

or from the second PC:
Jan  7 13:23:59 pcB phc2sys: [2974.050] rms   16 max   38 freq  +1822 +/-  18 delay  5750 +/-  33
Jan  7 13:24:14 pcB phc2sys: [2989.051] rms   24 max   53 freq  +1837 +/-  21 delay  5755 +/-  87
Jan  7 13:24:29 pcB phc2sys: [3004.053] rms   16 max   34 freq  +1850 +/-  13 delay  5736 +/-  84


Is it possible to get these values from phc2sys directly without the need to parse the logfile?
The background of the question is that I have to wait for the start of my proprietary application until the clocks of the PCs run in a well synchronized state.
Or what is the recommendation for this use case?

Thanks for any help on this question.


Best Regards

Mathias