.test-infra/metrics/prometheus/prometheus/config/rules.yml

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# Defines alerting rules used by Prometheus to detect anomalous behaviours
# among test results.
# Can be reloaded at runtime by sending a SIGHUP signal to the Prometheus
# process.

groups:
- name: beamTests
  rules:
  - alert: TestRegression
    expr: ((avg_over_time({job="beam",instance="",__name__!="push_time_seconds"}[1d])
      - avg_over_time({job="beam",instance="",__name__!="push_time_seconds"}[6d] offset 1d))
      / avg_over_time({job="beam",instance="",__name__!="push_time_seconds"}[6d] offset 1d))
      > 0.2
    labels:
      job: beamAlert
    annotations:
      summary: 'Average runtime over 24 hours is 20% greater than average from six previous days'