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Tooling Techniques for the Performance Ninja

Knowing your way around your development tools is key to becoming a performance Grand Master. Colt stepped through the three pillars of performance: network, compute and render, providing a tour of the key problem in each area and the tools available for finding and eradicating them.

Slides

  • You can now profile Chrome on Android with the DevTools you know and love from desktop.
  • The iteration loop for performance work is: gather data, achieve insight, take action.
  • Prioritize assets that are on the critical rendering path for your pages.
  • Avoid painting; it’s super expensive.
  • Avoid memory churn and executing code during critical times in your app.