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   8   377   183   -176us[ -176us] +/-   37ms
^- 213.239.239.165               2   9   377   489   -363us[ -325us] +/-   58ms
^- 2a01:4f8:0:a101::2:3          2   9   377   180    -62us[  -62us] +/-   45ms
^* 2a01:3f7::1                   1   8   377   453    +40us[  +80us] +/- 3512us
^+ 194.58.200.20                 1   9   377   317   +131us[ +131us] +/- 3463us
^- 2001:638:610:be01::103        1   9   377   385  +2152us[+2152us] +/-   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 ----- -----    2   1.0   -36ms   +35ms  N
D 213.239.239.165           N ----- -----  309   1.0   -35ms   +34ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----    0   1.0   -40ms   +40ms  N
* 2a01:3f7::1               N ----- -----  273   1.0 -3477us +3632us  N
+ 194.58.200.20             N ----- -----  137   1.0 -3363us +3619us  N
D 2001:638:610:be01::103    N ----- -----  204   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        8   7   34m     +0.066      0.092   -174us    33us
213.239.239.165             6   3   51m     -0.037      0.229   -325us    71us
2a01:4f8:0:a101::2:3        8   5   60m     -0.014      0.062    -53us    42us
2a01:3f7::1                 6   4   21m     +0.136      0.156   +104us    17us
194.58.200.20               6   3   86m     -0.020      0.203    +69us   105us
2001:638:610:be01::103      6   3   43m     +0.036      0.172  +2148us    41us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Fri May 15 11:02:28 2026
System time     : 0.000008419 seconds fast of NTP time
Last offset     : +0.000039683 seconds
RMS offset      : 0.000038560 seconds
Frequency       : 5.002 ppm fast
Residual freq   : +0.040 ppm
Skew            : 0.127 ppm
Root delay      : 0.006963213 seconds
Root dispersion : 0.000573079 seconds
Update interval : 260.0 seconds
Leap status     : Normal