Clock occasionally jumps backwards on 11.1-RELEASE

[Robert Blayzor]

On Jan 22, 2018, at 12:07 PM, Alan Somers <asomers at freebsd.org> wrote:
> 
> * Sometimes the jumps happen immediately after ntpd adds a new server to
> its list, but not always.
> 
> * I'm using the default ntp.conf file.
> 
> * ntpd is running on both, and it should be the only process touching the
> clock.   I have a script running "ntpq -c peers" once a minute, which shows
> the offset for one server suddenly jump to a large negative number.  Then
> the offsets for other servers jump to the same value, then either ntpd
> fixes the clock or exits because the offset is too high.


- Lose ntpd running in jails and run it only on the host. Running in the jail is totally unnecessary.

- Is this a bare metal server or VM? Lots of clock issues with VM’s…

- Stagger your periodic jobs on the host and the jail so they don’t all run at the same time
  slamming the host.

--
inoc.net!rblayzor
XMPP: rblayzor.AT.inoc.net
PGP:  https://inoc.net/~rblayzor/