It explains the correlation between inet packets & TCP packets, and why
the inet packet size varies when TLS is used for inter-node
communication.
[finishes 166419953]
It makes a big difference for stable throughput. See screenshots from
https://bugs.erlang.org/browse/ERL-959
We need to test this in a real network - I'm thinking GCP -, outside of
Docker. The results will inform whether we should change the default -
which is 1436 bytes.
[#166419953]
Add cadvisor & node-exporter & Docker metrics.
Inspired by https://github.com/stefanprodan/dockprom
There are no Grafana dashboards for these metrics yet. The dockprom ones
don't show any panels in Grafana 6.
[#165818813]
Even though this slows down Grafana container startup, we need to ensure
that this plugin is present, otherwise the panels that track process
state won't work. This will be slow the first time the plugin is
downloaded, and slightly faster on subsequent runs.
[#166004512]
* pin nodes to specific colours
* add message-related single-stats
* reshuffle rows
* node metrics are most useful
* queue, channel & connection churn are least useful
Includes Erlang node to colour pinning
Adds a few make targets to help with docker-compose repetitive commands
& Grafana dashboard updates.
Split Overview & Distribution Docker deployments
re deadtrickster/prometheus.erl#92
[finishes #166004512]
We (+@essen) have answered a bunch of questions (see the story) and
improved the metrics + dashboard in the process. Added some improvements
to the RabbitMQ Overview metrics as well.
[#166004104]
This puts load on the distribution and makes the Erlang-Distribution
dashboard show an interesting behaviour in TCP sockets. @dcorbacho
thinks so too.
re deadtrickster/prometheus.erl#92
[#166004512]
Use 1m instead of $__interval for rates that track metrics with slow
rate of change. Using $__interval will miss changes.
Stop rounding, it skews values.
All `basic.get` metrics are bad. The 0 threshold and the red colour for
all lines is hopefully enought to convey this.
re rabbitmq/rabbitmq-perf-test#203
[finishes #165852775]
Otherwise it's really hard to know what we are looking at when expanding
panels.
Also, pin to colours. Otherwise, rabbit@rabbitmq1 metrics in one panel
will appear yellow, and green in another panel. This is a one-off
which doesn't scale, should be automated in some way. Grafana doesn't
support pinning colors to labels 🤔
Gerhard Lazu
Jean-Sébastien Pédron
Michael Klishin
Michael Klishin