TPEPlatform/Graphic

Rendering performance analysis

• Basic steps
  • Check FPS/too many repaint events
  • Check CPU usage on content or chrome process
    • adb shell top -s cpu -m 10 -t
• CPU bound
  • CPU scheduling
    • Try to lock CPU cores/frequency(platform-dependent)
    • use watch -n 0.3 "adb shell cat file_node_of_CPU_frequency"
    • use simple script to see CPU loading and frequency
      • adb shell while true; do i=1; done
  • Gecko profiler[1] to get the callstack of CPU bound
  • Linux perf

• Content process profiling
  • Software rendering
  • GL rendering
• Chrome process profiling