ntpviz - Don't plot a line during data absence
hmurray at megapathdsl.net
Sun Oct 23 20:39:32 UTC 2016
gem at rellim.com said:
>> If the polling interval is X, there may be up to 8X gaps in peerstats.
> Ah, lost me. Say what?
Look at the time differences between samples for an IP Address in peerstats.
If the polling interval is X, there will be a line in rawstats for each
packet received. If none are lost, the spacing will be X.
There is a filter between the raw packets and the ones that come out of
peerstats. It has a buffer of the last 8 samples. It only uses the one with
the lowest round trip time. So if you get 8 samples in a row with increasing
RTT, the last 7 will get saved until the a new sample bumps the first one out
of the buffer.
Refclocks samples always get through. I assume it takes new samples when the
RTT is equal but there might be a simple special case test.
These are my opinions. I hate spam.
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