Chrony Graphs [Data Legend]
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vnStati Graphs
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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
===============================================================================
#? NMEA 0 0 0 6d +250ms[ +71ms] +/- 1000us
#? PPS 0 3 0 6d +180ms[-1357ns] +/- 401ns
^* pool.ntp1.cam.ac.uk 2 10 377 602 -155us[ -31us] +/- 8280us
^+ 194.213.3.203 3 10 377 776 -1114us[ -997us] +/- 13ms
^- 212-71-233-44.ip.linodeu> 2 10 331 24m -1757us[-1668us] +/- 27ms
^- no.rdns.greencloudvps.com 2 10 377 612 -1812us[-1689us] +/- 39ms
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
=======================================================================
d NMEA N ----- ----- 6d 1.0 -15.5s +31.5s N
S PPS N --T-- --T-- 6d 1.0 +105ms +1363ms N
* pool.ntp1.cam.ac.uk N ----- ----- 602 1.0 -8726us +8549us N
+ 194.213.3.203 N ----- ----- 776 1.0 -15ms +13ms N
D 212-71-233-44.ip.linodeu> N ----- ----- 24m 1.0 -28ms +24ms N
D no.rdns.greencloudvps.com N ----- ----- 611 1.0 -36ms +34ms 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
==============================================================================
NMEA 64 36 63 +13.513 39.979 +7990ms 1688us
PPS 9 5 65 +0.968 0.098 +734ms 1157ns
pool.ntp1.cam.ac.uk 6 3 68m +0.110 0.594 +108us 237us
194.213.3.203 8 6 120m +0.019 0.598 -57us 560us
212-71-233-44.ip.linodeu> 11 7 310m -0.101 0.133 -2078us 475us
no.rdns.greencloudvps.com 7 5 103m -0.028 0.332 -721us 222us
Command: chronyc tracking
Reference ID : 836F083D (pool.ntp1.cam.ac.uk)
Stratum : 3
Ref time (UTC) : Mon Apr 20 17:14:59 2026
System time : 0.000154283 seconds fast of NTP time
Last offset : +0.000123271 seconds
RMS offset : 0.000198601 seconds
Frequency : 14.891 ppm fast
Residual freq : +0.081 ppm
Skew : 0.308 ppm
Root delay : 0.015796032 seconds
Root dispersion : 0.001399367 seconds
Update interval : 1044.2 seconds
Leap status : Normal