PTP management client, pmc, can be used to obtain additional information from ptp4l as follows:
pmc -u -b 0 'GET CURRENT_DATA_SET'
sending: GET CURRENT_DATA_SET
90e2ba.fffe.20c7f8-0 seq 0 RESPONSE MANAGMENT CURRENT_DATA_SET
pmc -u -b 0 'GET TIME_STATUS_NP'
sending: GET TIME_STATUS_NP
90e2ba.fffe.20c7f8-0 seq 0 RESPONSE MANAGMENT TIME_STATUS_NP
limits the boundary to the locally running ptp4l
instance. A larger boundary value will retrieve the information also from
nodes further from the local clock. The retrievable information includes:
stepsRemoved is the number of communication paths to the grandmaster clock.
offsetFromMaster and master_offset is the last measured offset of the clock from the master in nanoseconds.
meanPathDelay is the estimated delay of the synchronization messages sent from the master in nanoseconds.
gmPresent is true, the
PTP clock is synchronized to a master, the local clock is not the grandmaster clock.
gmIdentity is the grandmaster's identity.
For a full list of pmc
commands, type the following as
Additional information is available in the