Hi,
I am running chrony 1.29.1 and gpsd 3.10. The following lines appear from time to time in the tracking.log file:
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Date (UTC) Time IP Address St Freq ppm Skew ppm Offset L Co Offset sd Rem. corr.
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2014-09-24 13:52:58 GPS 1 -229.869 884.773 -1.055e-01 N 1 1.383e-01 1.092e-02
2014-09-24 13:53:14 GPS 1 -229.869 884.773 -1.836e-01 N 1 1.390e-01 1.374e-02
2014-09-24 13:53:31 GPS 1 -229.869 884.773 -1.840e-01 N 1 1.398e-01 1.978e-03
2014-09-24 13:53:47 GPS 1 -229.869 884.773 -2.743e-01 N 1 1.317e-01 1.859e-03
2014-09-24 13:54:03 GPS 1 -229.869 884.773 -2.783e-01 N 1 1.506e-01 2.768e-03
2014-09-24 13:54:19 GPS 1 -229.869 884.773 -7.634e-02 N 1 1.725e-01 2.817e-03
2014-09-24 13:54:35 GPS 1 -229.869 884.773 -1.701e-01 N 1 2.410e-01 2.818e-02
2014-09-24 13:54:51 GPS 1 -229.869 884.773 2.965e-02 N 1 2.654e-01 2.341e-02
2014-09-24 13:55:07 GPS 1 -229.869 884.773 5.304e-01 N 1 2.503e-01 -5.862e-03
2014-09-24 13:55:23 GPS 1 -229.869 884.773 2.437e-01 N 1 1.322e-01 5.300e-05
2014-09-24 13:55:39 GPS 1 -344.818 577.440 1.491e-01 N 1 2.294e-02 -2.442e-03
2014-09-24 13:55:55 GPS 1 161.775 430.258 5.527e-02 N 1 9.165e-03 -1.518e-03
2014-09-24 13:56:11 GPS 1 230.612 290.956 3.681e-03 N 1 7.325e-03 -5.690e-04
2014-09-24 13:56:27 GPS 1 168.971 339.229 -1.739e-02 N 1 8.942e-03 -5.020e-04
Freq.
and skew are constant, the offset varies. At 13:55:07, the offset is
larger then 0.5s. Chrony announces this to rsyslog and starts correcting
it.
Sep 24 15:55:07 raspberrypi chronyd[19616]: System clock wrong by -0.530372 seconds, adjustment started