Re: [chrony-users] PPS time

[scs@xxxxxxxxxx (Steve Summit)]

Miroslav Lichvar wrote:
> On Sat, Jun 29, 2019 at 10:48:41AM -0400, Steve Summit wrote:
> > * ...is there any way to get chrony to just listen to PPS only...?
> > * Is there a way to configure chrony to *use the system clock*
> >   as a source for second-level timing information, using PPS only
> >   for subsecond steering?
>
> I think those two questions have the same answer. With the local
> directive in the config file, chronyd will synchronize to a PPS
> refclock without any other timesource, using the system time as a
> reference.

Perfect.  Thanks.  Sounds like 'local' is what I want.

> If you are planning to use the "PPS" SHM refclock with gpsd, then
> those questions need to be asked for gpsd, not chrony.

Gotcha.

But the implication here is that there may be other, non-gpsd PPS
refclocks I could be using instead of gpsd.  I feel like I should
have come across these already, but where can I read about them?

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