Hello, i am using prometheus and grafana to visualize data from a jenkins instance. I am using Jenkins metrics and prometheus metrics plugins to extract metrics for Prometheus, i have created a basic Grafana dashboard for instant metrics and some graphs and right now i need to create a promql query to extract the fluctuation from the last time the metric changes for the build time of a Jenkins job. I found out about changes() and rate() promql function but i don’t get the result i am waiting.
The last query that i used was: changes(default_jenkins_builds_last_build_duration_milliseconds{jenkins_job="$project"}[1m])
where the variable $project let me select the job that i need to investigate in Grafana.
is that the right approach ???
do you have any alternative idea ???