Platform/2012-07-24

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Platform Meeting Details

• Tuesday 2012-07-24 - 11:00 am Pacific

• Dial-in: Audio-only conference# 95312
  • People with Mozilla phones or softphones please dial x4000 Conf# 95312
  • US/Toll-free: +1 800 707 2533, (pin 4000) Conf# 95312
  • US/California/Mountain View: +1 650 903 0800, x4000 Conf# 95312
  • US/California/San Francisco: +1 415 762 5700, x4000 Conf# 95312
  • US/Oregon/Portland: +1 971 544 8000, x4000 Conf# 95312
  • CA/British Columbia/Vancouver: +1 778 785 1540, x4000 Conf# 95312
  • CA/Ontario/Toronto: +1 416 848 3114, x4000 Conf# 95312
  • UK/London: +44 (0)207 855 3000, x4000 Conf# 95312
  • FR/Paris: +33 1 84 88 37 37, x4000 Conf# 95312
  • Gmail Chat (requires Flash and the Google Talk plugin): paste +1 650 903 0800 into the Gmail Chat box that doesn't look like it accepts phone numbers
  • SkypeOut is free if you use the 800 number
• Warp Core Vidyo Room / SFO-Boardroom
• join irc.mozilla.org #planning for back channel

Layout

• met in person last week (with Graphics and Video)
• SVG display lists landed, pref'ed off
  • makes painting and hit-testing for SVG work much more like it does for all other content
  • Many performance improvements already made during the groundwork
  • once pref'ed on, it will allow SVG to benefit from more existing performance optimizations (layers) and future performance optimizations (off main thread compositing, DLBI)
  • will allow other web platform consistency/parity features such as z-index to be implemented in SVG
• landing plan for display list based invalidation (DLBI) is to split landing into a few pieces
  • still risk of regressions with each piece, but more manageable
  • some extra work needed to land pieces separately
  • high cost of merging with other changes to the code
  • trying to land automated tests for bugs reported after the previous landing
  • first piece and second piece landed
• pieces of off-main-thread animations landed / landing: bug 706179, bug 755084
  • starting off with animating just transforms and opacity in the layer system
  • still running style change handling on the main thread, just suppressing repainting (to be improved later, but tricky)
• other notable patches landed:
  • bug 745148: Support content processes pushing layer transactions directly to off-main-thread compositor in parent process (for b2g, spread across gfx / dom / layout)

Stability Report

Desktop

Flash

• Flash issues continue to our top problem - dialog on the list.
• Actively working with Adobe and they are providing us test builds to verify fixes.
• We came up with STR for the top one - bug 772097.
• We don't know for sure if we fixed 1 or all instances of this crash.
• Looks like the hangs have increased - need to compile a list of top hangs.
• Start focusing on hangs next.
• List of flash issues we are tracking - http://tinyurl.com/bpctedp.

Other Stuff

• bug 775090
  • PR_EnumerateAddrInfo | PR_GetHostByAddr - issue that spiked on beta.
  • No clear correlations
  • Outreach to users that have reported the problem, trying to find STR.
  • We may have found a user that can reproduce the problem.

Mobile

See Mobile Notes for Mobile specific Socorro notes