The sync-instances file identifies the sync instances that are
present. It gives details of each instance including its ranking, and shows which
instance is currently selected. It also identifies the selection policy currently in
use. For example:
# cat sync-instances
| R | instance S | M | state O | A | priority | C | gm class | accuracy | allan var | steps |
--------------------------------------------------------------------------------------------------------
| 5 | fr1 | | slave 0 | | 128 | 0 | freerunning | inf | nan | 0 |
| 6 | ptp3 | | listening 1 | | 128 | 0 | freerunning | inf | nan | 0 |
| 2 | ptp2 | | slave 0 | | 128 | 0 | locked | 150 | 3.34e-19 | 1 |
| 1 | ptp1 * | | slave 0 | | 128 | 0 | locked | 150 | 2.61e-23 | 1 |
| 3 | pps1 | | slave 0 | | 128 | 0 | locked | 150 | nan | 1 |
| 7 | ntp1 | | disabled 3 | | 128 | 0 | freerunning | 1e+07 | nan | 0 |
| 4 | crny1 | | slave 0 | | 128 | 0 | locked | 6.68e+07 | nan | 4 |
--------------------------------------------------------------------------------------------------------
Key: R = rank S = selected M = manual O = state order A = alarms C = clustering score
Selection policy:
0 : manual
1 : state
2 : no-alarms
3 : user-priority
4 : clustering
5 : clock-class
6 : total-accuracy
7 : allan-variance
8 : steps-removed