Platform/2012-12-18

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Platform Meeting Details

• Tuesday 2012-12-18 - 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

Notices/Schedule

?? bugs (??)	?? bugs (??)
Unresolved Aurora Trackers (non-security, not tracked for Beta)	Unresolved Beta Trackers (non-security)

Key Issues

Actions Last Week

• Alex to investigate raising visibility of key web compat changes (ie UA)
• Milan to assign https://bugzilla.mozilla.org/show_bug.cgi?id=805745
• Jet look into https://bugzilla.mozilla.org/show_bug.cgi?id=696640
• Naveed look into https://bugzilla.mozilla.org/show_bug.cgi?id=817342

Issues

• Win64 builds (bsmedberg)
• Future Issues - early discussion on dev-platform, monitoring for discussion if not resolved
  • MOZ_MAKE_FLAGS removal
  • C++11 atomics
    • https://groups.google.com/forum/?fromgroups=#!topic/mozilla.dev.platform/BsMJpfWf2ak
  • ICU Import
    • https://groups.google.com/forum/?fromgroups=#!topic/mozilla.dev.platform/sVVpS2sKODw
• Linux32 tests (catlee/joduinn)

Roundtable

• Meeting Survey Results & Actions
  • Survey Results
    • Overall rating 6/10
    • 93% learned something unexpected
    • General agreement orienting around products is more useful
    • General agreement monthly updates on certain topics are useful
    • General agreement calling attention to key issues helps
    • Sentiment that Metro, Snappy should have less frequent updates
    • Sentiment that Memshrink should have more frequent updates
    • Sentiment that Dev Tools should have its own section
  • Proposed/Possible Changes
    • Put the surprising info and actions first (starting today)
    • Add DevTools back (discuss)
    • Make Snappy, Metro, Memshrink changes (discuss)
      • njn publishes a detailed report of MemShrink activity every two weeks. We can post a summary here every two weeks if people think that would be useful. https://blog.mozilla.org/nnethercote/
    • Written only status updates for platforms, other pieces (discuss)

Products/Projects

Firefox Mobile

x86 Builds are Official!

• If santa brings you a Razr i, be sure take a build for a spin
  • http://ftp-scl3.mozilla.com/pub/mozilla.org/mobile/nightly/latest-mozilla-central-android-x86/en-US/fennec-20.0a1.en-US.android-i386.apk
  • http://techcrunch.com/2012/11/04/gift-guide-motorola-razr-i/

Memory, Responsiveness, Usability

• To reduce memory in our gfx code, let us first improve our visibility into where we are using memory: bug 818060 - Add a memory reporter for graphics textures
• Swift kick to the preprocessing shin: bug 820546 - Files are preprocessed unnecessary when building fennec's chrome jar

Stability Wins

• Empowering people to submit crash reports anytime, anywhere: bug 816164 - gzip-compress crash report submission on Android
• Fixed for Fx17bug 800838 - Android crash in nsNPAPIPluginInstance::UnscheduleTimer @ nsNPAPIPluginInstance::TimerWithID
• Uplifted to Fx18 bug 780831 - crash in libdvm.so@0x45... on JB

Misc. In progress/under investigation

• Unit test support for WebRTC
• bug 786996 - Content of Flash plugin is first displayed upside down

Metro [Weekly]

Elm to mc merge

• bug new-packager pretty much done, needs more tests, reviews, and testing.
• bug metro-build pretty much done. needs reviews on remaining blockers.
• bug elm-merge still work to do here: localization issues with metrofx, sec review, landing the rest of the metro code bits that haven't landed already. Remaining patches here can't land until after bug metro-build is on mc.
• Note - test plugin is moving out of (gre)/plugins to (dist)/plugins in bug 817881
• 0 bugs blocking (-7) bug metro-build w/work TBD
• 5 bugs blocking (+0) bug elm-merge w/work TBD

Rel-eng

• Planning to switch mc to the 8.0 sdk after the next merge on ~2013-01-06 bug 774910

Front-end

• ...

Stability Report [Weekly]

Mobile

• bug 780831 - crash in libdvm.so@0x45... on JB
  • needs push to beta and then tested on beta

• 17.0 Release top crashes
• 18.0b4 Beta top crashes
• Aurora top crashes
• Nightly top crashes

B2G

• bug 821353 Corrupt stacks from B2G reports - we now know the cause, solution is being worked on.
• bug 821498 Is on file for pending reports

Snappy [Weekly]

• Dec 13 Snappy minutes

Startup & Shutdown

• Thanks to BenWa, we no longer nuke cross compartment wrapper on shutdown, which should save 200ms+ on shutdown (bug 818296)
• Aaron added readahead for safebrowsing .sbstore files, which shows ~50ms improvement on his laptop, probably even more in other environments (bug 810101)
• Rafael moved Telemetry shutdown time probe off of the main thread (bug 815709)
• Vladan is looking into why we have added a gradual 30% regression in start-up times over the past year (bug 818257)
• espindola:

Tab Strip

• Vlad made a huge improvement o animation timing and now it's mostly achieving 60 fps on slow machines (bug 731974)
• James Abbatiello (a new contributor) created a tab switch timing add-on. Details in bug 812381

Content

• Vlad plans to move local storage writes off the main thread this week (bug 807021)
  • Honza is continuing the work on local storage in bug 600307