Sorry; this was for blackbox_exporter specifically. I skimmed quickly and missed that this is the general Prometheus-users lists rather than just blackbox-specific.
On Fri., Feb. 12, 2021, 17:24 Hugo Slabbert <[email protected]> wrote: > Would folks be open to additional phase metrics for TCP probes, similar to > the resolve, connect, etc. phases in http prober and the resolve etc. phase > metrics in the icmp prober? > > I've got a case where it would be helpful to have insight into the connect > (TCP connection established) vs. closed phases. On low latency > connections, the initial TCP connection 3-way handshake hits about 2-3 ms > for me on a set of targets (I'm assuming it's iniital flow entry, like > conntrack), whereas the connection close (FIN+ACK both ways, then final > ACK) is significantly quicker (around 0.3 ms). So the connection close > phase is closer to the real network RTT, whereas the initial TCP connection > establishment has about an order of magnitude overhead. > > I could try to add ICMP probes on for these hosts as well, and hopefully > with low enough frequency could bypass that initial overhead as later ICMP > probes reuse existing flow/session entries, but it would be ideal to be > able to get this additional info from the existing TCP probes. > > I'm just starting to dive into golang, but if it's not something that > others would want to take up I could try my hand at it, modeling after the > trace model used in the http prober, if this would be something useful for > others and that has a shot at getting approved as a PR. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "Prometheus Users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/prometheus-users/4pAxiUUSCqw/unsubscribe > . > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/prometheus-users/b149ab13-d629-4889-9423-08b8a16fc39cn%40googlegroups.com > <https://groups.google.com/d/msgid/prometheus-users/b149ab13-d629-4889-9423-08b8a16fc39cn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CABTdvP%2BLsKmVszhyBqhfu2S_LqXB67cWHZ1gYP%2BtbvO4446QUA%40mail.gmail.com.
