Inspect packet TTL - Githubissues

SuperQ / smokeping_prober

Prometheus style smokeping

Apache License 2.0

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Inspect packet TTL #19

Closed SuperQ closed 5 years ago

SuperQ commented 5 years ago

The upstream go-ping library now records packet TTL. It would be good to collect this TTL.

Options for this:

Record the last packet's TTL.
Observe the TTL as a histogram.

I think the histogram is either not granular enough, or too much cardinality.

So I'm leaning towards just tracking the last TTL, and exposing that as a single metric per pinger.

SuperQ commented 5 years ago

/cc @zloo

zloo commented 5 years ago

Agreed with tracking just the last TTL. I don't think this value will change much, so recording it as a histogram doesn't make much sense to me. This would be a rather easy thing to add, and if someone has a use case for TTL histogram, they can create a ticket in the future.