[ntp:questions] ntpd: time reset problem

David Lord snews at lordynet.org
Tue Sep 15 20:51:13 UTC 2009

Unruh wrote:
> David Lord <snews at lordynet.org> writes:
>> On Ubuntu it's made more difficult than it needs be as
>> both default to running from startup. I've been trying
>> to get radioclocks to work so need ntpd installed for
>> those.  Anyway I'll try getting chrony installed
>> standalone.
> Lichvar now has a version of chrony whith shm support through which you
> could run your radio clock. He also has a hack for ntpd with will use
> any of its refclocks to feed data to chrony and thus get all of the ntp
> support into chrony. (ntp runs but does nothing but feed refclock
> readings to chrony)

Any chance of a link to this as I've no problem trying on
either Ubuntu or NetBSD. I'm on chrony mailing list but it's
very quiet.

>> Radioclock idea was for when no dialup or lan was
>> available but suffers same problem for mobile use that
>> ntpd doesn't converge fast enough to be useful when
>> several seconds off when started. It would be handy if
>> refclock drivers had a step option but I can't see
>> anything like that documented.
> Again, chrony does, and yes it does work.

I'm sold

Meanwhile I'll see if ntpd will step from refclock source as
I'd not considered it possible so not bothered to try.



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