Platform/2013-06-18

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Engineering Meeting Details

• Tuesday 2013-06-18 - 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

Hot Bugs

(Important bugs for which we need to find owners or additional help. If known, please include suggested team or knowledge needed to advance the bug.)

Orange Factor

Stability

Other

The Need To Know

(Release and system issues that may impact engineering this week.)

Notices/Schedule (akeybl/lsblakk/bajaj)

?? bugs (?? bugs last week)	?? bugs (?? bugs last week)
Unresolved Aurora 54 Trackers (non-security, not tracked for Beta)	Unresolved Beta 147 Trackers (non-security)

Upcoming Outages/Upgrades

(System outages/upgrades and tree closures that impact engineering.)

Key Issues

(Non team specific issues that impact engineering.)

Team Stand-ups

(In <2 mins, what did your team accomplish last week, on what is your team working on this week, and on what, if anything, is your team blocked? No questions during the stand-ups. All questions should be asked during the roundtable.)

Firefox Metro (bbondy/jmathies/mbrubeck)

<Read Only>

• team status updates
• Continued work on front end polish
• improvements to chrome input selection
• progress being made on getting dev tools/profiler hooked up. (bug 850019)
• Currently hooking up Async Pan Zoom Controller to Metro in (bug 849266 and bug 801154), Desktop Wiin32 to follow

Firefox Mobile (mfinkle/blassey)

• 4 contributors, 7 bugs fixed fixed and 3 are in progress \o/: bug 867567, bug 871524, bug 877783, bug 876485, bug 684380,bug 880661, bug 802093, bug 88059, bug 879088, bug 877774
• We are getting very close to preffing WebRTC bug 881875 on for Android, looks like we need bug 882136 first, though
• Fixed and uplifted through beta: bug 879651 - no audio playback on x86
• Thank you, :tn for the fix for bug 876562 - In Fennec content behind fullscreen content should not be pannable, zoomable, or visible which was uplifted through beta. *Please* test Dynamic URL bar in Fx22 and Fx23 as much as you can

GFX (milan)

<Read Only>

• See previous week

Media (mreavy)

• Web Audio work is mostly done, only a few bits of the API remain to be implemented.
• Ehsan has mostly moved away from the Web Audio work, padenot, rillian, karlt and others are helping to finish the rest of the project.
• Basic WebVTT support landed behind a pref. You can test <track> in Nightly now!
• Created WebVTT wiki page for status and getting-started links.
• This week the WebVTT team is working on adding tests, fixing nits, and planning implementation of the revised WebVTTCue API.
• MediaEncoder interface landed and confirmed recording Opus files.

Performance (vladan)

• bug 853388: Add-on manager refactor will tentatively land next week
• bug 863475: Integrated ARM EXIDX stack unwinding into Breakpad
• bug 867762: Patch to track all main-thread I/O in profiler has landed. To try it out:
  • 1. Stop the profiler
  • 2. Make sure that "Main Thread I/O" is checked in the profiler pop-out panel
  • 3. Start the profiler
  • Sample screenshot
• Telemetry server backend redesign:
  • Overview of the work
  • telemetry-server github repo
  • new Telemetry data storage format
• bug 813742: Work continues on improving reftest and crashtest suites
• bug 883253: Investigating potential benefits of using new "volatile ranges" kernel feature on B2G/Android
• bug 848358: Work continues on Talos regression teststar for tab animation smoothness
• bug 865389: Adding file "read-ahead" flags to OS.File

Blog posts:

• Aaron Klotz: Detecting Main Thread I/O with SPS
• Irving Reid: Add-on Manager progress: Almost done!

Quality Programs

(An opportunity to hear about status with the various quality programs that do not have a formal team structure.)

Memshrink (njn)

A big week.

• Brian Hackett enabled lazy bytecode. This avoids generating bytecode (and subsequent objects, shapes and strings) for unexecuted JS functions, which is practice is ~50% of them due to extensive use of libraries such as jQuery. Reduces Firefox's memory consumption by ~5% on common workloads, and significantly reduces pressure on the GC.

• Nils Maier implemented separate measurement of add-on compartments in about:memory. This doesn't catch all add-on memory consumption, but it gets a lot of it, especially for JetPack add-ons. People have been wanting this for *years*.

• The report on MemShrink's 2nd birthday includes an updated MemShrink "big ticket items" list. Three old items were crossed off, and three new ones added. Better image handling and generational GC are still #1 and #2, though both have made good progress.

• MemShrink progress report, week 103-104. Future progress reports will now be every four weeks, rather than every two weeks.

Roundtable

(Comments and questions that arise during the course of the meeting or otherwise do not have a section.)

<Read only beyond this point>

Mailing List Threads

(Threads that are likely to be of interest to engineering from various mailing lists.)

Good Reads

(Links to blog posts, books, videos, etc. that you think will be of interest to others.)