A C wrote:
I finally rebuilt my NetBSD box after having lost the partition table on
the disk. I installed 4.2.7-p236 again and everything seemed fine all
day yesterday. Suddenly I get this:
$ ntpq -pn
remote refid st t when poll reach delay
offset jitter
==============================================================================
x127.127.22.0 .PPS. 0 l 2 16 377 0.000 -244.18
351.567
127.127.28.0 .GPSD. 0 l 65 128 377 0.000 -131866
2837.34
74.118.152.85 69.36.224.15 2 u 185 512 377 42.681 -128790
9459.57
64.16.211.38 142.3.100.15 3 u 328 512 377 86.417 -122725
6592.50
173.244.211.10 131.107.13.100 2 u 196 512 377 55.746 -123465
6503.82
130.207.165.28 130.207.244.240 2 u 114 512 377 78.525 -131743
11757.9
131.144.4.10 130.207.244.240 2 u 488 512 377 87.644 -129888
11647.1
This happened sometime late last night (I'll have to look at the peer
and loop files to see when). No cron jobs fired off during this period,
they had already run yesterday afternoon. Before this I had offsets for
the remote servers in the few milliseconds range and an offset on the
PPS signal of only a couple microseconds.
Anyone have any ideas? Note that the GPSD refclock is set as "noselect"
currently. I'm trying to test the static navigation feature of the GPS
to see if the time offsets calm down on that. PPS is supplied by the
kernel itself.
I had problems when I tried 4.2.7-* recently so I backed out to
either 4.2.6p3 or p5. I was trying 4.2.7.p98 without problem and
also a slightly later version but 4.2.7p239 wasn't usable and I'm
not willing to experiment too much as it might affect my online
servers.
I don't use gpsd either.
Sure GPS (but no different from Garmin 18x-LVC).
NetBSD 5.1_stable, ntp-4.2.6p5
PPSb offset -0.001 jitter 0.003
but offset can increase to 30 usec during cron jobs at 02:00
and 03:00 but is then quickly back to < 5 us.
David
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