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Re: [gpsd-dev] GPSd on FreeBSD
From: |
O'Connor, Daniel |
Subject: |
Re: [gpsd-dev] GPSd on FreeBSD |
Date: |
Tue, 10 Sep 2019 16:39:05 +0930 |
> On 10 Sep 2019, at 13:55, Gary E. Miller <address@hidden> wrote:
>>>>
>>>> I think NTP must be using PPS otherwise the jitter would be much
>>>> higher.
>>>
>>> Your ntpmon showed that you were NOT using the local time from
>>> gpsd!
>>
>> Yes, as above.
>
> The ntpmon showed your system was not using local NTP either. So you
> still have not shown your PPS works with NTP.
This output:
remote refid st t when poll reach delay offset jitter
==============================================================================
o127.127.20.0 .GPS. 0 l 6 16 377 0.000 -0.018 0.002
-10.0.2.1 214.52.129.40 3 u 33 64 377 0.229 -1.949 0.044
0.au.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.002
1.au.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.002
2.au.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.002
+220.233.156.30 .PPS. 1 u 9 64 377 28.999 0.900 0.166
+220.158.215.20 202.46.178.18 2 u 36 64 377 78.438 -0.451 0.086
-13.239.25.115 .GPS. 1 u 25 64 377 30.705 -1.130 0.493
+27.124.125.252 27.124.125.250 3 u 31 64 377 33.795 0.369 0.220
-103.126.53.123 223.252.32.9 2 u 21 64 373 31.275 -1.001 0.114[
Indicates PPS is being used. The 'o' tally code is:
o pps.peer
The peer has been declared the system peer and lends its variables to thesystem
variables. However, the actual system synchronization is derived from a
pulse-per-second (PPS) signal, either indirectly via the PPS reference clock
driver or directly via kernel interface.
>>>> given it should be using the kernel for PPS edge capture I think it
>>>> wouldn't have an effect.
>>>
>>> Well, the logging demonstrated it was NOT using KPPS. Nor
>>> TIOMCIWAIT PPS. So no PPS at all.
>>
>> You seem to be missing the point that it is trying to do
>> time_pps_create on a file descriptor set to -2 which is not a valid
>> FD.
>
> You are missing the point the -2 is not an FD, it is an error code from
> an eariler failure.
I can't find any earlier failure though..
I put the whole log file at http://www.dons.net.au/~darius/gpsd.log if you want
to check it out.
--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
- Re: [gpsd-dev] GPSd on FreeBSD, (continued)
- Re: [gpsd-dev] GPSd on FreeBSD, Hal Murray, 2019/09/11
- Re: [gpsd-dev] GPSd on FreeBSD, O'Connor, Daniel, 2019/09/12
- Re: [gpsd-dev] GPSd on FreeBSD, Gary E. Miller, 2019/09/12
- Re: [gpsd-dev] GPSd on FreeBSD, O'Connor, Daniel, 2019/09/13
- Re: [gpsd-dev] GPSd on FreeBSD, Gary E. Miller, 2019/09/10
- Re: [gpsd-dev] GPSd on FreeBSD, O'Connor, Daniel, 2019/09/12
Re: [gpsd-dev] GPSd on FreeBSD, O'Connor, Daniel, 2019/09/09
- Re: [gpsd-dev] GPSd on FreeBSD, Gary E. Miller, 2019/09/09
- Re: [gpsd-dev] GPSd on FreeBSD, O'Connor, Daniel, 2019/09/09
- Re: [gpsd-dev] GPSd on FreeBSD, Gary E. Miller, 2019/09/10
- Re: [gpsd-dev] GPSd on FreeBSD,
O'Connor, Daniel <=
- Re: [gpsd-dev] GPSd on FreeBSD, Gary E. Miller, 2019/09/10