systemd-timesyncd question

[Graham]

In previous OS releases, such as Debian 8.8, systemd-timesyncd was used as the 

network time synchronization.

It did an initial sync, then as it determined the time base correction 

necessary, corrected for the frequency error in the BBB's main clock, and kept 

increasing the time between network time syncs, until it was running/syncing

about once every thirty minutes.

You saw a bunch of line items in the syslogs that looked like the following

Dec  3 13:34:50 BBG4 systemd-timesyncd[209]: interval/delta/delay/jitter/drift 2048s/-0.001s/0.053s/0.011s/-72ppm

Dec  3 14:08:58 BBG4 systemd-timesyncd[209]: interval/delta/delay/jitter/drift 2048s/+0.002s/0.055s/0.012s/-71ppm

Now, in Debian 9.2, systemd-timesyncd is used for network time synchronization.

But in the syslogs, you only see a single report of time sync at the first 

boot, and nothing further.

Is systemd-timesyncd still doing a network sync every 30 minutes and just not 

logging it to syslog, or is it doing it less frequently?

If it is doing it less frequently, what is the easiest way to get back to the

30 minute re-sync cycle with the clock correction?

--- Graham

==