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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Refclock Integration Advice
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Mon, 23 Nov 2020 14:44:21 +0100
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On Mon, Nov 23, 2020 at 01:38:30PM +0000, Chang, Benjamin wrote:
> When I run ppstest and ppswatch, it will successfully print out the pulses.
>
> When I run chronyd -d -d to see, I do see that chrony is giving me the following regarding my PPS:
> "2020-11-23T13:33:25Z refclock.c:476:(check_pulse_edge) refclock pulse ignored offset=0.000008103 distance=0.000025204 max_error=0.000010000"
> And
> "2020-11-23T13:33:23Z refclock_pps.c:150:(pps_poll) PPS sample ignored seq=90552 ts=1606138402.000128212"
>
> Which seems to confirm it throwing/dropping some of my PPS. Is there a reason for this and a way to prevent this? I tried being as detailed in the conf file but adding the field width "0.00002" (20us).
The width option reduces the maximum allowed error, as is described in
the man page. What do you get when you drop the option?
--
Miroslav Lichvar
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