What is meant by 3 phases of ICMP in Prometheus?

[Isuru Dhananjaya]

There are 3 phases of ICMP in Prometheus while we are probing data via BlackBox exporter.

1. resolve
2. RTT
3. setup

What is meant by each of these?

(attaching)

probe_icmp_duration_seconds{phase="resolve"} 1.4725e-05 probe_icmp_duration_seconds{phase="rtt"} 0.000237673 probe_icmp_duration_seconds{phase="setup"} 0.000140214

Thanks

[Julius Volz]

Hi Isuru,

The phases are:

- setup: the duration for creating / marshaling the ICMP packet that is about to be sent

- resolve: the DNS resolution duration

- RTT: round trip time, the duration that the actual ping takes to get to its target and back to the blackbox exporter

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Julius Volz

PromLabs - promlabs.com

[Isuru Dhananjaya]

Thanks a lot.