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Engineering Meeting Details

  • Tuesday 2014-07-22 - 11:00 am Pacific Standard Time
  • Dial-in: Audio-only conference# 98411
    • People with Mozilla phones or softphones please dial x4000 Conf# 98411
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    • 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 / Air Mozilla / MTV Alien Nation / TOR Finch / SFO Warfield / PDX Hair of the Dog
  • join #planning for back channel


Need To Know

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

Notices/Schedule (lsblakk/sylvestre)

Next Merge: July 8, 2024 Next Release: July 9, 2024
Central: 129 Aurora: 54 Beta: 128 Release: 127

Build Changes (gps)

(Build changes of which engineers should be aware.)

RelEng (catlee)

(Repo, test, and other information for engineers from the release engineering team.)

Upcoming Outages/Upgrades

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

Quality Programs

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

OrangeFactor (ryanvm)

  • Past week's OrangeFactor: N/A (data collection issues) (Previous Week: 9.26).
  • Intermittent mochitest-bc docShell leaks (bug 1036031/bug 1036036) remain highest unowned failures on the list.
  • #4: bug 1040724 - Intermittent test_visibility.html | Plugin should have painted once. (expected 1 independent paints, expected 1 logged paints, got 2 actual paints)
    • Started on Friday, fallout from all the plugin activity last week?
  • 15 intermittent failures fixed in the last week - List - Thanks!.
    • Shout-out to Sami Jaktholm for fixing lots of devtools issues recently.

CritSmash (dbolter)

MemShrink (njn)

  • Jan de Mooij enabled optimized Latin1 strings in the JS engine. This saves over 4 MiB when starting Firefox and loading Gmail using a Latin1 locale. (And it's still a win on non-Latin1 locales and pages because they still use lots of Latin1 strings, identifiers, etc, and Firefox's own JS code is still written mostly in Latin1.) This also speeds up some string-intensive operations such as some regexp operations.
  • (BTW, this change is also a textbook example of how to break up a large change into lots of small, manageable pieces, which leads to faster reviews, clearer progress, and easier bisection of introduced defects. See the tracking bug for details.)
  • Lots of B2G 2.0 memory usage regressions have been getting fixed recently (e.g. here and here) involving too many people to list individually. Lots of great work between the MemShrink team and the Systems Front End team.

Stability (kairo/bsmedberg)

<Read Only>

  • Nightly had a startup crash in yesterday's first build, is fixed.
  • Otherwise, overall data looks decent.

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.)

A-Team (jgriffin)

mochitest-browser-chrome --run-by-dir, bug 992911

  • 14 test bugs need to be fixed before we can land this:
    • bug 525284 - browser_bug400731.js is fragile, not always passing
    • bug 947574 - Intermittent browser_426329.js | This test exceeded the timeout threshold. It should be rewritten or split up
    • bug 963075 - browser_pdfjs_[main|views].js leaks until shutdown when run as a standalone directory
    • bug 1001820 - browser_uitour.js fails on linux 32+64 while running as a standalone directory
    • bug 1002439 - browser_bug248970.js is almost perma fail when run by directory on osx opt
    • bug 1017187 - browser_yahoo_behavior.js leaks until shutdown when running components/search directory by itself
    • bug 1026310 - Intermittent browser_UITour_panel_close_annotation.js | Timeout waiting for invisibility: Tooltip should have disappeared when the subview opened
    • bug 1041527 - (has a patch already) - browser_tabview_*_perwindowpb.js
    • bug 1041537 - browser_Browser.js fails quite frequently on linux and windows debug runs when running the fuel/test/ directory by itself
    • bug 1041544 - browser_certViewer.js leaks until shutdown when run as a directory instead of a full suite
    • bug 1041549 - browser_overflow_anchor.js leaks windows when run as a subdirectory instead of a full suite
    • bug 1041569 - browser_windowRestore_perwindowpb.js leaks until shutdown when run as a directory instead of a full suite
    • bug 1041583 - browser_bug627234_perwindowpb.js leaked 2 windows until shutdown while running as a subdir instead of a full suite
    • bug 1041594 - browser_mozAudioChannel_muted.js crashes when run as a directory instead of a full suite

Accessibility (dbolter)

App Tools (prouget)

B2G Services (dougt)

Cloud Services (mmayo)

Developer Tools (robcee)

<Read Only>
bug 1034601 - Enable devtools/markupview tests with e10s 
bug 994732 - Make "Disable Cache" in Devtools persist (only when the toolbox is open)
bug 736078 - Show which elements have listeners attached in the Inspector
28 bugs fixed

DOM (jst/overholt)

Electrolysis (e10s) (blassey)

Some highlights:

Firefox Desktop (gavin)

Summary of Work In Progress

You can find the most recently completed iteration performance report here

You can see the status of the current iteration in progress here

Summary of Recent Landings

Team landed 45 bugs over the last week (total of 89 for the 2-week iteration just ended)

Details of landings from the past week can be seen here

Firefox Mobile (mfinkle/blassey)

Work In Progress

You can find more on upcoming feature plans in the[roadmap]

Landings from the past week

Firefox OS Communications (scravag)

Firefox OS Connectivity (vchang)

Firefox OS Devices/Porting (ericchou)

<Read Only>

  • Gonk team (led by Thomas Tsai)
  • Bluetooth (members: Shawn Huang, Ben Tian, Jamin Liu, Jocelyn Liu)
    • Kept working on WebBluetooth API and had a brownbag by Shawn about Bluetooth 4.0(BLE).
    • All FxOS 2.0 Bluetooth certification blockers have been resolved and verified by Taipei QA. Thanks to everyone helped.
  • Media Playback (members: Bruce Sun, Blake Wu, Star Cheng)
    • bug 1038037 - [dolphin][flame] b2g crash when open some streaming audio from browser (1.4+)
      • Analyzed and delegated to RTSP experts since it crashed at RTSP.
    • bug 904177 - Integrate MediaCodec into gecko for media playback (2.1 feat+)
      • Landed. Follow-ups have also been filed and that's the next part Bruce will work on.
      • Benjamin from Media team will co-work with Bruce on async MediaResource.
  • Device Storage & Stability (members: Alphan Chen)
    • Focused on MTP(2.1 feat+) with Dave Hylands and Eric Chou
      • Issues resolved: bug 1029533, bug 1036861, bug 1036862, bug 1036863
      • Current m-c has MTP support for Ubuntu now. (Pref off by default. See bug 1029533 comment 4 about how to enable it.)
      • Alphan is still trying to figure out why MTP didn't work on Windows 7.

Firefox OS Media Recording(pchang)

Firefox OS Media (slee)

<Read Only>

  • bug 916643 - ImageCapture - Implement WebIDL and takePhoto()
    • reviewing
  • bug 1032652 - Have a way for MediaDecoderReader to read MediaResource in an unblocking/asynchronous fashion
    • implementing
  • bug 1041883 - [MediaRecorder] If you switch start and stop quickly, it will cause MediaEncoder not be shut down.
    • Reproduce and analyze the problem
  • bug 1038655 - Intermittent test_playback_rate.html | Current time should not change when playbackRate is null (2.333 2.000045)
    • landed
  • bug 1037370 - TEST-UNEXPECTED-FAIL | /tests/content/media/test/test_fastSeek.html | uncaught exception - TypeError: v.parentNode is null at http://mochi.test:8888/tests/content/media/test/test_fastSeek.html:62
    • landed
  • bug 668973 - Intermittent Android test_playback.html | Test timed out. (test cases seek.webm, *.ogv)
    • landed
  • bug 886188 - Intermittent test_preload_actions.html | Test timed out.
    • landed
  • bug 1039901 - MP3FrameParser sometimes gives wrong duration on B2G
    • Found the root cause. Will work out a patch for that.

Firefox OS Media Apps (hema)

Firefox OS Performance (mlee)

Firefox OS Productivity (doliver)

Firefox OS RIL (htsai)

<Read Only>

Work In Progress

  • bug 1038176 - SMS app launch latency regressed in v2.0 2.0+
    • Work with Gaia on profiling
  • bug 843452 - B2G RIL: use ipdl as IPC in MozMobileConnection. feature-b2g:2.1
  • bug 935843 - B2G RIL: Parse EF_IMG from SIM feature-b2g:2.1
  • bug 1031193 - [B2G][GAIA] API compatibility to unify both sendMMI() and dial() feature-b2g:2.1
    • API proposed
  • bug 1032858 - Add support for RIL_REQUEST_GET_CELL_INFO_LIST to expose neighboring cell data
  • bug 1036851 - Add 'ready' event to telephony to signal the completion of initialization
  • bug 977474 - [B2G] [NetworkCommandOptions] Combine the prefixLength, prefix and maskLength into one
  • bug 1038606 - implement a nsITelephonyService for Simulator

Landings From the Past Week

  • bug 1031640 - B2G RIL: incorrect STK TR for handling SEND_SS/SEND_USSD/SEND_SHORT_MESSAGE/SEND_DTMF in ril_worker.js.
  • bug 1033142 - B2G RIL: add support for mvno type 'gid' in matchMvno() function
  • bug 1022490 - [dolphin][perf] improve the performance of exporting Contacts to USIM card (china unicom) 1.4+
  • bug 1029721 - CDMA call waiting call is not logged in call history 2.0+

Firefox OS Systems - Front End (gwagner)

Firefox OS Systems - Platform (timdream)

GFX (milan)

  • Firefox OS plans for 34:
    • bug 989403 transform: scale(X) not being repainted when assigned to
    • bug 967844 support multi-layer APZ controllers
    • bug 1016539 color related (b&w, invert, contrast) accessibility features
  • Other active work not locked to 34:
    • bug 996611 Skia for content everywhere (where everywhere excludes D2D)
    • APZ on desktop
    • tiling on desktop

JS (terrence)

<Read Only>

  • Compiler (JIT)
  • Front End and Other
    • bug 1038038: ShapeTable optimizations -- saves >1MiB on gmail
    • bug 975011: nspr is automatically built for SM shell on windows now

Layout (jet/dbaron)

<Read Only> No update this week.

Media (mreavy)

<Read Only>

  • OpenH264 working in the tree in today's nightly (perhaps some Mac issues)
  • New UI for screen sharing and for webrtc camera/mic/etc use
    • More redesign in 34

Necko (dougt/jduell)

Performance (vladan)

<Read Only>

No updates this week

Seceng (grobinson)

<Read Only>

  • bug 985252 - Sandboxing is now enabled for GMP processes on Windows. Next step is to ratchet down permissions, so that the sandbox is more effective.

Shumway (tschneidereit)

WebAPI (overholt)


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

<Read only beyond this point>

Friends of the Tree

There were great changes by volunteers in Core and Toolkit during the past week. Thanks to all of these contributors for their passion and hard work, and say hi to new contributors lewis and Corentin Wallez! Here are some highlights:

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.)

irc #planning Log From This Meeting

jesup: (WebRTC test for OpenH.264)