Apdex scores per controllers in Grafana
Currently most data in Grafana focuses on specific timings. This makes it hard to determine whether timings are good or not, and what to focus on. To make this easier we should calculate apdex scores per controller over time and display this on dashboards such as https://performance.gitlab.net/dashboard/db/rails-controllers. This isn't possible using InfluxDB so we'll need to use Prometheus for this (and migrate the data this depends on).
Edited by Yorick Peterse