Hi, I've set up a ntpd on my linux box and at first it worked fine and
got a stratum of 2 after a while. Then, after a couple of minutes, it
got a stratum of 16 again. Now it hops back and forth and doesn't seem
to be very stable at all.
I sat and watched the output from peers in ntpq for a while, and first
everything is fine but after a while all the remote servers get *+- etc
in front of their names, I've tried to read what these mean but I'm
don't really understand.
Here's the output from ntpq peers:
ntpq> peers
remote refid st t when poll reach delay offset
jitter
==============================================================================
nissan.ifm.liu. .GPS. 1 u 16 64 17 27.721 -479.06
115.831
timmy.lysator.l .GPS. 1 u 28 64 17 28.089 -380.49
72.967
timehost.lysato .GPS. 1 u 40 64 17 28.833 -462.36
111.578
Time1.Stupi.SE .PPS. 1 u 23 64 17 24.651 -313.99
115.770
ntp1.sth.netnod .PPS. 1 u 28 64 17 26.199 -475.23
119.470
ntp2.gbg.netnod .PPS. 1 u 51 64 17 32.007 -455.40
123.874
ntpq> peers
remote refid st t when poll reach delay offset
jitter
==============================================================================
nissan.ifm.liu. .GPS. 1 u 85 64 36 27.721 -479.06
115.831
*timmy.lysator.l .GPS. 1 u 32 64 37 28.089 -380.49
118.008
+timehost.lysato .GPS. 1 u 45 64 37 27.253 -522.91
149.591
-Time1.Stupi.SE .PPS. 1 u 27 64 37 24.651 -313.99
169.327
+ntp1.sth.netnod .PPS. 1 u 32 64 37 26.199 -475.23
116.326
+ntp2.gbg.netnod .PPS. 1 u 54 64 37 32.007 -455.40
110.364
ntpq> peers
remote refid st t when poll reach delay offset
jitter
==============================================================================
nissan.ifm.liu. .GPS. 1 u 99 64 36 27.721 -479.06
115.831
*timmy.lysator.l .GPS. 1 u 45 64 37 28.089 -380.49
118.008
+timehost.lysato .GPS. 1 u 58 64 37 27.253 -522.91
149.591
-Time1.Stupi.SE .PPS. 1 u 40 64 37 24.651 -313.99
169.327
+ntp1.sth.netnod .PPS. 1 u 45 64 37 26.199 -475.23
116.326
+ntp2.gbg.netnod .PPS. 1 u 2 64 77 31.388 -633.99
250.372
ntpq> peers
remote refid st t when poll reach delay offset
jitter
==============================================================================
nissan.ifm.liu. .GPS. 1 u 112 64 36 27.721 -479.06
115.831
*timmy.lysator.l .GPS. 1 u 58 64 37 28.089 -380.49
118.008
+timehost.lysato .GPS. 1 u 8 64 77 27.253 -522.91
141.296
-Time1.Stupi.SE .PPS. 1 u 53 64 37 24.651 -313.99
169.327
+ntp1.sth.netnod .PPS. 1 u 58 64 37 26.199 -475.23
116.326
+ntp2.gbg.netnod .PPS. 1 u 15 64 77 31.388 -633.99
250.372
Why might does this happen?
ntptrace shows this:
localhost: stratum 16, offset 0.000000, synch distance 0.010290
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