[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.


cheers

David




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