PINE64 - 12.0-CURRENT r324563 - ntpd can't keep time

[Andreas Schwarz]

On 13.11.17, Mark Millard wrote:

> On 2017-Nov-13, at 9:01 AM, Henri Hennebert <hlh at restart.be> wrote:

>>     remote           refid      st t when poll reach   delay   offset jitter
>> ==============================================================================
>> 0.freebsd.pool. .POOL.          16 p    -   64    0    0.000    0.000  0.000
>> -webhost2.mitht. 193.67.79.202    2 u  948 1024  177   58.815    1.451 0.932
>> +ns2.telecom.lt  212.59.3.3       2 u   13 1024  177   43.400  -357912 357913.
>> +ntp.bserved.nl  193.67.79.202    2 u 1111 1024   37   17.664    0.980 0.379
>> -178.32.44.208 ( 193.190.230.65   2 u   81 1024  177   14.930    1.087 135278.
>> *stratum2-1.NTP. 129.70.130.71    2 u 1077 1024   77   28.135    1.998 0.570
>> -linode.ibendit. 199.102.46.77    2 u 2048 1024   76  129.945    0.307 0.584
>> #193.104.37.238  193.190.230.66   2 u  799 1024   77   14.977    1.321 0.821
>> 
>> And after a half hour the clock was 5 minutes in the future.
>
> Did you notice the huge offset and jitter in your listing:
> (last 2 numerals in the line below)
>
> +ns2.telecom.lt  212.59.3.3       2 u   13 1024  177   43.400  -357912 357913.

Yes, this peer causes the problem, the offset jumps between your pollings from
~0 to -350k, all other peers are in range. The jitter was the result of this jump.
In your previous emails, other peers had the same problem, so it's probaly not
a problem with the peer itself. Maybe a strange network problem, ntp is UDP,
do you have a real IP Adress, without NAT/CGN or other packet rewriting?

-asc