Platform/2014-08-26

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Engineering Meeting Details

• Tuesday 2014-08-26 - 11:00 am Pacific Standard Time

• 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 / Air Mozilla / MTV Alien Nation / TOR Finch / SFO Warfield / PDX Hair of the Dog
• join irc.mozilla.org #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
Trains
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.)

• HTTP caches deployed in AWS for build/test/symbols downloads - reduced bandwidth by 50%
  • http://atlee.ca/blog/posts/cache-em-all.html
  • Goal is to reduce overall network traffic; too much traffic leads to packet loss and intermittent infra failures

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: 3.67.
  • Due to changes in logging, numbers aren't directly comparable to past numbers. Gory details explained in bug 1046162 comment 21 and down.
• Hot bugs:
  • UNASSIGNED #1: bug 1054292 - Intermittent Android TEST-UNEXPECTED-FAIL | remoteautomation.py | application timed out after 330 seconds with no output ("org.mozilla.fennec still alive after SIGABRT: waiting...", [@ libc.so + 0xd1fc]).
    • Widespread failures make this difficult to handle.
  • UNASSIGNED #2: bug 1054456 - Intermittent Android talos command timed out: 3600 seconds without output running ['/tools/buildbot/bin/python', 'scripts/scripts/android_panda_talos.py', '--talos-suite', 'remote-tp4m_nochrome', '--cfg', 'android/android_panda_talos_releng.py', ' ...
    • Failure rate high enough for hiding by default.
  • UNASSIGNED #3: bug 1033098 - Intermittent B2G runner.py | application crashed [@ mozilla::gl::GLBlitTextureImageHelper::BlitTextureImage(mozilla::gl::TextureImage*, nsIntRect const&, mozilla::gl::TextureImage*, nsIntRect const&)].
    • Will lead to Gaia Python Integration tests being hidden on OSX if not addressed soon.
• 28 intermittent failures fixed in the last week - List - Thanks!.
  • Thanks to Jeff Gilbert and the Necko team for fixing various test issues with cache2 in time for it to ship with Fx32.
  • Thanks to Martijn Wargers for unearthing and fixing various test failures that weren't previously being caught by the harness.

MemShrink (njn)

• Robert O'Callahan optimized the handling of transparent text, which gives significant time and memory wins on some PDF files viewed with pdf.js.

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)

• The 1-week experiment to run debug tests on most desktop platforms every other push on mozilla-inbound is currently in progress. See dev.platform post.
• --run-by-dir for mochitest-browser-chrome: only 1 bug left that needs attention before this can be turned on: bug 1041594.
• The w3c web-platform-tests are coming! They will be enabled for linux64 opt on trunk trees this week; other platforms coming soon. James Graham will have a post to dev.platform explaining all the details.

App Tools (prouget)

<Read Only>

• WebIDE can debug app startup on device: https://groups.google.com/forum/#!topic/mozilla.dev.gaia/LMz9Pu9REEk

Electrolysis (e10s) (blassey)

• If you'd like to test e10s in Nightly, flip the "browser.tabs.remote.autostart" pref to true and restart Nightly.
  • Known issues likely to affect you: https://etherpad.mozilla.org/e10s-known-issues
• bug 1050447 - Address bar no longer loses on about:newtab
• bug 1042653 - Fixed Tree Style Tab crash
• bug 961362 - HTML5 video is now full screen (but Flash video still has problems in full screen, bug 1056385)

Firefox OS Connectivity (vchang)

<Read Only>

1. https://wiki.mozilla.org/TPE_CONNECTIVITY_GROUP/2014-08-26

Firefox OS Devices/Porting (ericchou)

<Read Only>

• Gonk team (led by Thomas Tsai)
  • Tarako: Solving gating issues which were reported by Spice/Intex
  • Dolphin: SPRD PTR3
  • Woodduck: Meta bug
  • Flame: KK + v1.4/v2.0 porting
  • Tako

• Bluetooth (members: Shawn Huang, Ben Tian, Jamin Liu, Jocelyn Liu)
  • BLE GATT Client API draft has been proposed to dev-webapi. (https://wiki.mozilla.org/B2G/Bluetooth/WebBluetooth-v2)
  • bug 1050114 - Crash in mozilla::dom::bluetooth::BluetoothChild::RecvNotify - landed (2.0+, CAF blocker)
  • bug 929376 - Content process should be able to use API: BluetoothManager.IsConnected() - landed (2.1+)

• Media Playback (members: Bruce Sun, Blake Wu, Star Cheng)
  • bug 1052206 - [MADAI][Multimedia] Attached mp3 file is occurred tick noise - under investigation (2.0?)
  • All B2G Platform Decoder Module related code has landed.
    • MSE still doesn't work well on B2G. Blake is cooperating with Chris Pearce to figure out the root cause.

• Device Storage & Stability (members: Alphan Chen)
  • MTP will be finally supported in nightly build after bug 964601 is fixed. (2.1 feat+)

Firefox OS RIL (htsai)

<Read Only>

1. https://wiki.mozilla.org/TPE_RIL_team/2014-08-26

GFX (milan)

• Desktop:
  • OMTC on Windows has a few issues remaining; it's still riding 33 (Aurora), and we're hoping that we can leave it there, a version ahead of the plan, by landing those fixes this week.

Firefox OS:

• Features for 34/2.1 generally on track:
  • Vsync related work done in the Taipei graphics team is going to land behind pref, but we're not drawing attention to it as it is a "preparatory" work anyway.
  • Multi-layer-apz work (bug 1026271) is going down to the wire. There is a bit more layout work to be completed in the prerequisite bug 967844, and that's a sizable patch, so some of it may start behind a pref as well. On the other hand, this layout work is a prerequisite for async scrolling on desktop, so it's worth the wait.

Layout (jet/dbaron)

<Read Only>

• CSS font features (font-variant-* properties and @font-feature-values rule) now enabled on trunk, and font-feature-settings unprefixed (bug 975744)
• Unicode database tables updated to version 7 (bug 1057548)
• imgIContainer::Draw refactoring landed (bug 1043560), improving numerical accuracy (rounding), and paving the way for future improvements such as downsample-on-decode and media fragments

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.)