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 -n 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               
===============================================================================
^- 2a01:4f8:0:a0a1::2:1          2   9   377   304   -442us[ -452us] +/-   42ms
^- 213.239.239.165               2  10   377   287   -421us[ -431us] +/-   48ms
^- 2a01:4f8:0:a101::2:3          2   8   377   163    +91us[  +91us] +/-   57ms
^* 2a01:3f7::1                   1   8   377   240    -78us[  -88us] +/- 3530us
^+ 194.58.200.20                 1   8   377   191    +55us[  +55us] +/- 3527us
^- 2001:638:610:be01::103        1  10   377   184  +2005us[+2005us] +/-   15ms

Command: chronyc -n 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
=======================================================================
D 2a01:4f8:0:a0a1::2:1      N ----- -----  140   1.0   -35ms   +34ms  N
D 213.239.239.165           N ----- -----  123   1.0   -30ms   +29ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----    0   1.0   -34ms   +34ms  N
* 2a01:3f7::1               N ----- -----   77   1.0 -3616us +3459us  N
+ 194.58.200.20             N ----- -----   28   1.0 -3401us +3520us  N
D 2001:638:610:be01::103    N ----- -----   21   1.0   -13ms   +18ms  N

Command: chronyc -n 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
==============================================================================
2a01:4f8:0:a0a1::2:1        6   3   43m     -0.072      0.076   -427us    19us
213.239.239.165            12   5   94m     +0.053      0.062   -366us    84us
2a01:4f8:0:a101::2:3       16   6   43m     -0.046      0.042    +62us    30us
2a01:3f7::1                10   5   38m     -0.009      0.097    -45us    40us
194.58.200.20               9   8   51m     +0.002      0.047    +44us    31us
2001:638:610:be01::103     11   6  172m     +0.044      0.038  +2115us    91us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Thu Apr 23 08:21:00 2026
System time     : 0.000006685 seconds fast of NTP time
Last offset     : -0.000010110 seconds
RMS offset      : 0.000039269 seconds
Frequency       : 5.219 ppm fast
Residual freq   : -0.000 ppm
Skew            : 0.054 ppm
Root delay      : 0.006998821 seconds
Root dispersion : 0.000307688 seconds
Update interval : 257.7 seconds
Leap status     : Normal