Thanks a lot. I change the master's sync interval to be 1 second or longer and see the master offsets are logged instead of rms values.
Daniel -----Original Message----- From: Miroslav Lichvar [mailto:[email protected]] Sent: Wednesday, August 13, 2014 4:25 AM To: Daniel Le Cc: [email protected] Subject: Re: [Linuxptp-users] ptp4l output messages/statistics On Mon, Aug 11, 2014 at 10:29:01PM +0000, Daniel Le wrote: > 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? The individual measurements are replaced in the log with the rms values when the sync interval is shorter than summary_interval (1 second by default). See the summary_interval description in the ptp4l man page. -- Miroslav Lichvar ------------------------------------------------------------------------------ _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users
