Platform/2013-03-26

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Platform Meeting Details

  • Tuesday 2013-03-26 - 11:00 am Pacific
  • Dial-in: Audio-only conference# 98411
    • People with Mozilla phones or softphones please dial x4000 Conf# 98411
    • US/Toll-free: +1 800 707 2533, (pin 4000) Conf# 98411
    • US/California/Mountain View: +1 650 903 0800, x4000 Conf# 98411
    • US/California/San Francisco: +1 415 762 5700, x4000 Conf# 98411
    • US/Oregon/Portland: +1 971 544 8000, x4000 Conf# 98411
    • CA/British Columbia/Vancouver: +1 778 785 1540, x4000 Conf# 98411
    • CA/Ontario/Toronto: +1 416 848 3114, x4000 Conf# 98411
    • UK/London: +44 (0)207 855 3000, x4000 Conf# 98411
    • FR/Paris: +33 1 84 88 37 37, x4000 Conf# 98411
    • 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
  • Engineering Vidyo Room / Warp Core / SFO-Boardroom / Tor Commons
  • join irc.mozilla.org #planning for back channel

Actions

Notices/Schedule

  • FF 20.0b7 is with QA and should ship on Wed
  • FF 20.0 RC will go to build today to get extra time with QA prior to ship
  • Release Sign Off meeting is tomorrow at 10am PT in ReleaseCoordination vidyo room
37 bugs (29 bugs last week)
18 bugs (31 bugs last week)
Unresolved Aurora 54 Trackers (non-security, not tracked for Beta) Unresolved Beta 71 Trackers (non-security)

Key Issues

Products/Projects

Firefox OS

  • Remaining 1.0.1 blockers: tef+
  • Remaining 1.1 blockers: leo+

Bluetooth

  • get together last week
  • put together BT architecture plan
  • planned for migration to Jelly Bean BT stack

Performance

App startup: https://datazilla.mozilla.org/b2g/

  • bug 846901 Email scroll performance is very poor (<50fps) and stuttery
  • bug 844248 MediaStreamGraph adds lag to CameraPreview drawing update
  • bug 844558 Contact API: Send cached contacts in chunks from parent to child

(Thanks to Erin Lancaster for contributing to the update!)

Firefox Desktop

Firefox Mobile

Blog Shout Out

Optimizing Fx for Android- View Reduction: http://sriramramani.wordpress.com/

Usability, Responsiveness, Performance
Great Progress on
  • IME Automation
  • WebRTC Backend Debugging: bug 832551 - webrtc.org upstream has broken the low-latency Android audio driver to the point of unusability
  • Lot's of rebasing and reworking alder patches in preparation for upcoming merge to central
  • Android PGO investigations currently stalled by valgrind issues we're hoping to get resolved soon bug 781179 - Use QEMU to generate the profile info for PGO builds for Android
Stability Wins
  • We got this uplifted to Fx20 for the last beta before GA release next week bug 846465 - crash in mozilla::MediaPluginHost::CreateDecoder @ libstagefright.so@0x79877 when playing mp3 files on HTC devices running JB
  • Fixed for Fx21 bug 822686 - java.lang.NullPointerException: at org.mozilla.gecko.Favicons$LoadFaviconTask.downloadFavicon(Favicons.java)
  • Also landed on Aurora: bug 850693 - java.lang.ClassCastException: android.os.BinderProxy cannot be cast to org.mozilla.gecko.NotificationService$NotificationBinder
  • bug 848070 - Crash org.mozilla.gecko.TabsPanel.<init>(TabsPanel.java:84)
  • bug 847002 - fix crash in nsPresShell::Paint

Stability

  • bug 831768 landed on Nightly and should fix a number of Flash hang issues - if you see any weirdness there, please tell us, we hope to even uplift this to 21.
  • In bug 837835, we found that we had two regressions, in both 19 and 20, that lead to increases in EMPTY dump crashes, we need help tracking down the actual causes.
  • Mobile:
    • bug 845867 Graphic dev needs device.
    • Firefox 20 for Android might be better in stability indicators than any other before, good work!
  • Trunk bugs that need attention:
    • bug 853774 (imgRequest::GetStatusTracker) - needs owner.
    • bug 854604 - Typing 'Components' in the Web Console crashes the browser - needs owner.

OrangeFactor

  • Past week's OrangeFactor: 7.15 (Previous Week: 12.02)
    • A number of tests were hidden due to lack of attention and continued failures.
  • B2G emulator tests were hidden last week due to high failure rate. See bug 853024 and dependencies for re-enabling.
  • bug 824022 ("command timed out: 1200 seconds without output, attempting to kill" during test_blocklistchange.js, test_bootstrap.js, test_install[_strictcompat].js, test_update[_strictcompat].js, test_filepointer.js, test_dictionary.js, test_theme.js) is the #3 top orange currently, even though it only affects Windows XP. Help still wanted on this and bug 597064.
  • 20 intermittent failures fixed in the last week - List - Thanks! However, 188 happened at least twice in the last week.

Snappy [Bi-Weekly]

  • No more Snappy meetings: [1]
  • Snappy status update + workweek talks: [2] + [3]
  • Top sources of temporary main thread hangs lasting >5s (uncategorized): [4]
  • Places:
    • bug 830423: Avoid repeated execution of expensive daysOfHistory query
    • bug 834457: mak removed deprecated synchronous APIs from Places
  • Storage:
    • Discussed plan for mozIStorageAsyncConnection + plan for SQLite in workers
  • bug 644744: Modify xperf+talos to output thread and stage information with per-file I/O stats, adds whitelist capability
  • bug 648407: Mike Hommey folded libraries for faster startup
  • bug 790882: Tim Taubert taught Firefox to warm up newtab connections on hover
  • bug 829952: Masayuki Nakano improved Firefox scrolling responsiveness on modern touchpads

Metro [1st Tuesday of each month]

Games [1st Tuesday of Month]

Mobile Web Compat [2nd Tuesday of Month]

Critsmash [3rd Tuesday of Month]

Memshrink [4th Tuesday of Month]

Bill McCloskey landed zones, which wins back a lot of the overhead introduced by compartment-per-global. It saves about 6 MiB (~10%) on start-up on desktop, and more with heavier usage. User comments:

  • "I have a fair amount of bugzilla tabs pinned and use bugzillaJS, and zones landing caused my profile’s memory at startup to drop from ~650 to ~550 MiB".
  • "This has reduced the memory usage of Ad Block Plus quite a lot... about 40-50 MB, with 10 tabs loaded with misc websites."


MemShrink reports: week 89--90, week 91--92.

Roundtable