[ntp:questions] Which time source is ntp using
Chip
chip.from.nc at gmail.com
Thu Jul 13 00:26:45 UTC 2017
All,
How would I get my GPS clock to be withing 1/2 second of the PPS so it will be used as the be used as the primary clock reference and external sources will not be used.
Thanks
Chip
On 07/12/2017 09:37 AM, Brian Utterback wrote:
> Strictly speaking, it is using both. A PPS signal can only be used on a system clock that is within half a second of the correct time. In essence the part of the timestamp that is of a precision of one second and up is coming from the 176.9.72.17 system, while the part of the timestamp that is in fractions of a second is coming from the PPS.
>
> Hope that helps.
>
> On 7/11/2017 10:53 PM, Chip wrote:
>> All,
>>
>> I have set up a raspberry pi as a NTP server.
>>
>> The Pi is performing flawlessly.
>>
>> when I run the ntp -pn, I get the following output
>>
>> remote refid st t when poll reach delay offset jitter
>> ==============================================================================
>> 127.127.1.0 .LOCL. 10 l 27h 64 0 0.000 0.000 0.000
>> o127.127.20.0 .GPS. 0 l 58 64 377 0.000 0.007 0.004
>> *176.9.72.17 192.53.103.104 2 u 44 64 377 136.644 1.221 0.720
>> +46.254.216.9 89.109.251.21 2 u 58 64 337 177.067 0.041 2.734
>> -69.10.161.7 144.111.222.81 3 u 36 64 377 69.135 15.589 0.680
>> +96.244.96.19 192.168.10.254 2 u 46 64 377 58.373 0.809 13.308
>>
>> Is the pi using the GPS pps signal as the reference clock or the clock at 176.9.72.17 which has
>> the * infront of it?
>>
>> Thanks
>>
>>
>> _______________________________________________
>> questions mailing list
>> questions at lists.ntp.org
>> http://lists.ntp.org/listinfo/questions
>
>
> --
> Oracle <http://www.oracle.com>
> Brian Utterback | Principal Software Engineer
> Phone: +1 6038973049 <tel:+1%206038973049>
> Oracle Systems/RPE Solaris Network
> 1 Oracle Dr. | Nashua, NH 03062
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> All working systems eventually show their own agendas.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> Green Oracle <http://www.oracle.com/commitment> Oracle is committed to developing practices and products that help protect the environment
--
Ralph "Chip" Blach
(919)-260-0097
More information about the questions
mailing list