Firefox OS/Performance/Investigating Alerts

When you get an email from fxos-perf-alerts@mozilla.com, there is a good chance it is an automated email.

We have two types of automated alerts:

  • Ingestion Alerts (we were expecting data and never received it)
  • Regression Alerts (the values of the reported data have changed)

Regression Alerts

A regression alert has a Title in this format

'[ALERT][B2G] <testname> regressed by <-x.x> in <suite>'

example

'[ALERT][B2G] email_memory regressed by -3.6 in vsize, vsize'