[chrony-users] Fwd: Chrony malfunctioning at beaglebones

[Nuno Gonçalves <nunojpg@xxxxxxxxx>]

Hi,

Chrony at armv7l, a Beaglebone running Debian 8.1 (linux 4.1.5) looks
to be broken.

I have tested both a Beaglebone white and a Beaglebone black.

I have tested with the Debian package (1.30), 2.1.1, and git HEAD.

So, usually Chrony does sync the clock, but gives weird frequency estimates.

Since this devices don't have a RTC, I have tried to start chrony both
with a time way in the past, but also with a "correct" time already
set.

Machine 1:

debian@bbw1:~$ chronyc tracking
Reference ID    : 5.135.59.152 (ntp1.unixcraft.org)
Stratum         : 3
Ref time (UTC)  : Sun Aug 16 18:32:27 2015
System time     : 0.000288986 seconds slow of NTP time
Last offset     : +0.199954823 seconds
RMS offset      : 0.199954823 seconds
Frequency       : 92.190 ppm fast
Residual freq   : +42658.770 ppm
Skew            : 1000000.000 ppm
Root delay      : 0.070693 seconds
Root dispersion : 175.260788 seconds
Update interval : 2.3 seconds
Leap status     : Normal
debian@bbw1:~$ chronyc sources
210 Number of sources = 3
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^+ a88-157-128-22.cpe.netcab     3   8    37   174    +68ms[ +268ms] +/-   66ms
^+ adsl-62-48-148-210.ptprim     3   8    37   174    +52ms[ +252ms] +/-   71ms
^* ntp1.unixcraft.org            2   8    37   173   +114ms[ +314ms] +/-   68ms
debian@bbw1:~$ chronyc sourcestats
210 Number of sources = 3
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
a88-157-128-22.cpe.netcab   5   3     9 +43847.180     151084  +7882ms    65ms
adsl-62-48-148-210.ptprim   5   3     8 +45060.492     169101  +8104ms    75ms
ntp1.unixcraft.org          5   3     9 +37482.402     234556  +6671ms    83ms


Machine 2:

debian@bbb1:~$ chronyc tracking
Reference ID    : 193.136.164.1 (ns.rnl.tecnico.ulisboa.pt)
Stratum         : 4
Ref time (UTC)  : Sun Aug 16 18:32:22 2015
System time     : 0.000045670 seconds fast of NTP time
Last offset     : -0.075360224 seconds
RMS offset      : 0.075360224 seconds
Frequency       : 500.000 ppm fast
Residual freq   : -27241.334 ppm
Skew            : 1000000.000 ppm
Root delay      : 0.026741 seconds
Root dispersion : 155.273239 seconds
Update interval : 2.0 seconds
Leap status     : Normal
debian@bbb1:~$ chronyc sources
210 Number of sources = 2
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* ns.rnl.tecnico.ulisboa.pt     3   8    37   155  -9917us[  -85ms] +/-   15ms
^- a88-157-128-22.cpe.netcab     3   8    37   154    -35ms[  -35ms] +/-   64ms
debian@bbb1:~$ chronyc sourcestats
210 Number of sources = 2
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
ns.rnl.tecnico.ulisboa.pt   5   3     8 -27241.334  74445.352  -4354ms    30ms
a88-157-128-22.cpe.netcab   5   3     8 -29209.541  74561.016  -4684ms    31ms


What kind of debug info should I collect?

Best regards,
Nuno

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