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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] chrony gpsd / pps raspberriy Pi4
- From: Gerd Hoerst <gerd@xxxxxxxxxx>
- Date: Thu, 2 Jan 2025 18:15:25 +0100
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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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