Dieser Inhalt ist in der von Ihnen ausgewählten Sprache nicht verfügbar.
23.4. Using the PTP Management Client
The
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
stepsRemoved 1
offsetFromMaster -142.0
meanPathDelay 9310.0
~]# pmc -u -b 0 'GET TIME_STATUS_NP'
sending: GET TIME_STATUS_NP
90e2ba.fffe.20c7f8-0 seq 0 RESPONSE MANAGMENT TIME_STATUS_NP
master_offset 310
ingress_time 1361545089345029441
cumulativeScaledRateOffset +1.000000000
scaledLastGmPhaseChange 0
gmTimeBaseIndicator 0
lastGmPhaseChange 0x0000'0000000000000000.0000
gmPresent true
gmIdentity 00a069.fffe.0b552d
Setting the
-b option to zero limits the boundary to the locally running ptp4l instance. A larger boundary value will retrieve the information also from PTP nodes further from the local clock. The retrievable information includes:
stepsRemovedis the number of communication paths to the grandmaster clock.offsetFromMasterand master_offset is the last measured offset of the clock from the master in nanoseconds.meanPathDelayis the estimated delay of the synchronization messages sent from the master in nanoseconds.- if
gmPresentis true, thePTPclock is synchronized to a master, the local clock is not the grandmaster clock. gmIdentityis the grandmaster's identity.
For a full list of pmc commands, type the following as
root:
~]# pmc help
Additional information is available in the pmc(8) man page.
