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  10   377   817    -17us[  -13us] +/-   39ms
^- 213.239.239.165               2  10   377   314   -101us[ -101us] +/-   55ms
^- 213.239.239.166               2  10   377   315   -512us[ -512us] +/-   48ms
^+ 2a01:3f7::1                   1  10   377   586    -91us[  -91us] +/- 3505us
^* 194.58.200.20                 1  10   377   593    -32us[  -27us] +/- 3477us
^- 2001:638:610:be01::103        1  10   377    98  +1951us[+1951us] +/-   16ms

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 ----- -----  719   1.0   -26ms   +26ms  N
D 213.239.239.165           N ----- -----  216   1.0   -25ms   +25ms  N
D 213.239.239.166           N ----- -----  217   1.0   -37ms   +37ms  N
+ 2a01:3f7::1               N ----- -----  487   1.0 -3613us +3434us  N
* 194.58.200.20             N ----- -----  495   1.0 -3440us +3492us  N
D 2001:638:610:be01::103    N ----- -----    0   1.0   -14ms   +17ms  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       11   7  173m     +0.006      0.031    +18us    66us
213.239.239.165            16  11  129m     -0.013      0.027    -44us    64us
213.239.239.166            15   9  241m     -0.003      0.013    -89us    51us
2a01:3f7::1                10   8  155m     +0.003      0.038  -6356ns    65us
194.58.200.20              11   7  171m     -0.002      0.027    -13us    58us
2001:638:610:be01::103     14   7  120m     -0.007      0.021  +2008us    49us

Command: chronyc -n tracking

Reference ID    : C23AC814 (194.58.200.20)
Stratum         : 2
Ref time (UTC)  : Thu Mar 19 06:35:07 2026
System time     : 0.000006987 seconds fast of NTP time
Last offset     : +0.000004235 seconds
RMS offset      : 0.000065037 seconds
Frequency       : 12.647 ppm slow
Residual freq   : +0.000 ppm
Skew            : 0.025 ppm
Root delay      : 0.006788422 seconds
Root dispersion : 0.000703344 seconds
Update interval : 1027.4 seconds
Leap status     : Normal