Performance

The Firefox performance team focuses on improvements to the Gecko platform and Firefox across desktop and mobile. If you have performance-related questions, ask us in #perf-help:mozilla.org on Matrix and #perf-help on Slack. For general discussion, find us at #perf:mozilla.org on Matrix.

The team:

• Performance Engineering
• Performance Test Engineering
• Performance Tools Engineering

Here are some related pages you may be interested in:

• Performance/Triage
• Performance/Fenix

Measuring & improving Firefox performance

Write-ups

• Firefox performance knowledge-base
• How to evaluate the performance of your new feature
• Information on Talos automatic performance tests:
  • What to do when your check-in causes a Talos regression
  • Additional reading: How the Automation Team does performance sheriffing
• Avoid SQLite in your next Firefox feature

Tools

• Telemetry:
  • Telemetry dashboard
  • Adding a new Telemetry probe
• SPS Gecko Profiler
  • Reporting a Performance problem
• Buildbot/Talos
• MozGTestBench
  • Write low level microbenchmarks using GTest
• xperf
  • Tracing VirtualAlloc With Xperf
• Statuser: Restartless Firefox extension for as-it-happens hang monitoring.