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Project Flag

We have a Performance project flag used for triage nomination and prioritisation. Anyone can nominate bugs for triage, but only members of the perf-triage-team group can prioritise or mark bugs as unrelated to performance.

  • ? add to triage queue
  • - not performance related
  • P1 P1 performance bug
  • P2 P2 performance bug
  • P3 P3 performance bug


  • perf A bug that affects speed or responsiveness. (For memory use issues, use "memory-footprint" or "memory-leak" instead.)
  • perf-alert Associated with a performance alert.
  • perf:responsiveness The issue affects the promptness of the browser’s response to user input.
  • perf:resource-use The issue affects resource use excessively: cpu, gpu, ram, disk access, power, etc.
  • perf:pageload The issue affects the initial loading of websites.
  • perf:frontend The issue affects the browser front-end (i.e. the Firefox UI.)
  • perf:animation The issue affects the smoothness of animations.
  • perf:startup The issue affects application startup.