Re: chrony gpsd / pps raspberriy Pi4

Gerd Hoerst <[email protected]> Thu, 2 Jan 2025 18:15:25 +0100
Newsgroups gmane.comp.time.chrony.user
Message-ID <[email protected]>
Hi !

It seems  that it takes one day untill evrything is in cycle.... now the 
"main server " outside (in ntp pool) is fine

(first 2 are DCF77 Sources and  3rd and 4th are Pi4 with Ublock GPS and 
time via SHM and PPS

  chronyc sourcestats virgo: Thu Jan  2 17:13:37 2025

Name/IP Address            NP  NR  Span  Frequency  Freq Skew Offset  
Std Dev
==============================================================================
firewall                    6   3  241m     -0.035      0.589 -433us   826us
capricorn                   7   5  241m     -0.129      0.613 -1653us  
1007us
pi4cm                       6   5  224m     -0.264      0.559 -1008us   
737us
pi4hole                     6   3  224m     -0.214      0.259 -880us   411us

  chronyc sources virgo: Thu Jan  2 17:15:13 2025

MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^+ firewall                      1  10   177  1061 -1669us[-1669us] +/- 
7454us
^+ capricorn                     1  10   177   20m -2371us[-2371us] +/- 
9300us
^+ pi4cm                         1  10    77   850 -3796us[-3796us] 
+/-   11ms
^* pi4hole                       1  10   177   21m -762us[-2071us] +/- 
7066us

And the clock i mentioned seems to work

chronyc sources pi4cm: Thu Jan  2 18:14:42 2025

MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
#* SOCK                          0   4   377    13    -70ns[ -693ns] 
+/-  257ns
#- PPS                           0   4   377    13    -71ns[ -71ns] +/-  
251ns

Ciao Gerd

Am 02.01.2025 um 13:08 schrieb Miroslav Lichvar:
> On Sun, Dec 22, 2024 at 10:42:34PM +0100, Gerd Hoerst wrote:
>> i have a similar setup on 2 PI4 (one is a regular PI4 one is a PI4CM with IO
>> board) both were running fine over longer period but now it was time to
>> upgrade OS (to Deb Bookworm) and now one of them is running like normal but
>> the other one:
>>
>> MS Name/IP address         Stratum Poll Reach LastRx Last sample
>> ===============================================================================
>> #x SOCK                          0   4   377    10    -31us[ -31us] +/-
>> 204ns
>> #x PPS                           0   4     0   163 -3495ns[-3495ns] +/-
>> 303ns
>> =x pi4hole.hoerst.net            1  10   377   802   -399us[ -399us] +/-
>> 1235us
> Can you please post the chrony configuration? Are the SOCK and PPS
> refclocks using the same (GPS?) device? Normally you would have only
> one, or the other one marked as noselect if it was using for locking
> of the first one.
>

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