Mobile/Performance

Performance issues of Mobile Gecko

This is the short list of problems which prevent us from using Head CVS Mozilla on Linux ARM with acceptable performance.

• GFX
  • Cairo
    • Bug 386440
    • Bug 364221 (Scrolling)
      • GTK2-gfx 6433ms vs Thebes-gfx 16340ms
    • Counting of composite operations
    • Composite functionality improvements
      • Pixman library optimizations/rewriting
    • Rendering on 16bit xserver
  • Font Engine
    • Pango (slow) Bug 403618
    • XFT (more or less fast)
      • Bug 403494

• Layout
  • Zooming
    • Bug 402555
    • Incremental Zooming
    • Font metrics caching
    • True Page Zooming (Fake increasing of window dimensions)
  • TextFrame/TextRun problems

• UI
  • XUL
    • JS + XML
    • Caching

• JavaScript
  • Interruptable JavaScript (Responsive UI)
  • Bug 404629

• Startup
  • Component Manager performance

• Network
  • Pipelining
    • only one socket per page
    • max 2-3 requests at a time
  • KeepAlive
  • Larger buffers
  • No Disk Cache
  • Small Mem Cache
    • Test against large ajax sites (backbase, for example)

• Preferences
  • browser.sessionhistory.max_entries
  • browser.sessionhistory.max_total_viewers

Memory usage issues of Mobile Gecko

• Images Rendering
  • Bug 386451