> -----Original Message----- > From: Maxime Lemonnier [mailto:maxime.lemonn...@gmail.com] > Sent: Wednesday, July 11, 2018 1:21 PM > To: linuxptp-users@lists.sourceforge.net > Subject: [Linuxptp-users] Fwd: Stuck in the 70s: Need Help with phc2sys/ptp4l > > Anyways, I rebooted the slave, and set the master on ntp, and now the slave is > back to the present. > > If I temporaly disable ntp, and change the clock on the master (e.g. -/+ 3 > minutes), the slave is not updated unless I restart: > - master's ptp4l > - slave's ptp4l > - slave's phc2sys > > Which kind defeat the point of using a time protocol. >
The slave is going to use frequency tuning to syntonize with the master, rather than direct clock jumps. In practice, the masters are unlikely to have huge time jumps like this, and a stable monotonically increasing clock is more useful. There should be some configurations you can set so that it will do a clock jump when the difference is higher than some threshold. By default, I believe it only jumps at the start. Thanks, Jake ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
