[ntp:questions] Offset Average (Normal)?

David Lord snews at lordynet.org
Tue Mar 13 16:05:40 UTC 2012

Alby VA wrote:
> On Mar 13, 9:59 am, David Lord <sn... at lordynet.org> wrote:
>> That seems to be working ok.
>> The NMEA sentences aren't being reported because PPS is being
>> used to condition the system clock.
>> David
>  Okay. My whole understanding of NTP and Clocks is now
> becoming clearer. My apologies, I'm still a n00b.
>  So what you are saying is the GPS time via the SureGPS
> device is now being ignored and the time of my machine is
> now being held in check by the PPS signal? If yes, does
> that mean seeing "oGPS_NMEA" is better than seeing
> "*GPS_NMEA"?
>  Since I can't find any docs on deciphering the ntpq output,
> I'm trying to understand what the symbols next to each
> entry represent. Some I've found, but maybe you could
> correct me:
> o = ???
> * = ??? (My Assumption: preferred time server)
> x = ??? (My Assumption: False Tick - Bad Time)
> + = ??? (My Assumption: Next Best Server for Time)
> - = ??? (My Assumption: Ignore this useless server)
> ** Sorry for all the questions. Just trying to educate myself on being
> a
> time master too. :)

That code indicates PPS is conditioning the system clock.

I don't know why your previous ntp.conf wasn't working.
Sometimes when there are problems I've found there are two
instances of ntpd running so if I have a problem one check
is with "ps ax | grep ntpd" and "cat /var/db/ntp/ntpd.drif"


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