Chrony Graphs [Data Legend]

Day
Week
Month
Chrony server statistics graph - day
Chrony system clock offset graph - day
Chrony system clock tracking graph - day
Chrony sync delay graph - day
Chrony clock frequency graph - day
Chrony clock frequency drift graph - day
Chrony server statistics graph - week
Chrony system clock offset graph - week
Chrony system clock tracking graph - week
Chrony sync delay graph - week
Chrony clock frequency graph - week
Chrony clock frequency drift graph - week
Chrony server statistics graph - month
Chrony system clock offset graph - month
Chrony system clock tracking graph - month
Chrony sync delay graph - month
Chrony clock frequency graph - month
Chrony clock frequency drift graph - month

vnStati Graphs

vnStat summary
vnStat daily
vnStat top 10
 vnStat hourly
vnStat monthly
vnStat yearly

Chrony - NTP Statistics

Command: chronyc sources -v


  .-- Source mode  '^' = server, '=' = peer, '#' = local clock.
 / .- Source state '*' = current best, '+' = combined, '-' = not combined,
| /             'x' = may be in error, '~' = too variable, '?' = unusable.
||                                                 .- xxxx [ yyyy ] +/- zzzz
||      Reachability register (octal) -.           |  xxxx = adjusted offset,
||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
#- GPS                           0   4   377    20  -3123ns[-6041ns] +/- 2000ns
#* PPS                           0   4   377    19  -2295ns[-5223ns] +/- 2000ns
^? ntp2.wiktel.com               1   8   377     2  -5359us[-5359us] +/-   29ms

Command: chronyc selectdata -v

  . State: N - noselect, s - unsynchronised, M - missing samples,
 /         d/D - large distance, ~ - jittery, w/W - waits for others,
|          S - stale, O - orphan, T - not trusted, P - not preferred,
|          U - waits for update,, x - falseticker, + - combined, * - best.
|   Effective options   ---------.  (N - noselect, P - prefer
|   Configured options  ----.     \  T - trust, R - require)
|   Auth. enabled (Y/N) -.   \     \     Offset interval --.
|                        |    |     |                       |
S Name/IP Address        Auth COpts EOpts Last Score     Interval  Leap
=======================================================================
P GPS                       N ----- -----   17   1.0   -11us +3048ns  N
* PPS                       N -P--- -P---   16   1.0 -9141ns +3657ns  N
N ntp2.wiktel.com           N N---- N----    0   1.0    +0ns    +0ns  N

Command: chronyc sourcestats -v

                             .- Number of sample points in measurement set.
                            /    .- Number of residual runs with same sign.
                           |    /    .- Length of measurement set (time).
                           |   |    /      .- Est. clock freq error (ppm).
                           |   |   |      /           .- Est. error in freq.
                           |   |   |     |           /         .- Est. offset.
                           |   |   |     |          |          |   On the -.
                           |   |   |     |          |          |   samples. \
                           |   |   |     |          |          |             |
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
GPS                         6   3    80     -0.041      0.278  -1376ns  2151ns
PPS                         6   3    80     -0.026      0.259   -326ns  1996ns
ntp2.wiktel.com            13   7   30m     -0.296      1.812  -3262us   787us

Command: chronyc tracking

Reference ID    : 50505300 (PPS)
Stratum         : 1
Ref time (UTC)  : Tue Jan 13 05:44:43 2026
System time     : 0.000000008 seconds slow of NTP time
Last offset     : -0.000003055 seconds
RMS offset      : 0.000001869 seconds
Frequency       : 37.586 ppm fast
Residual freq   : -0.026 ppm
Skew            : 0.197 ppm
Root delay      : 0.000000001 seconds
Root dispersion : 0.000027895 seconds
Update interval : 16.0 seconds
Leap status     : Normal