Platform/2014-09-23

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Engineering Meeting Details

• Tuesday 2014-09-23 - 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/lmandel)

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.)

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.)

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.)

Developer Tools (prouget)

<Read Only>

• devtools overhead (Fx Desktop E10S & FxOS): from 7-8MB to 2-3MB.
• Simulator 2.2 released. 2.0 and 2.1 updated.

Electrolysis (e10s) (blassey)

• Please help dogfood e10s in Nightly!
  • To opt-in, open the "Preferences" and check the "Enable E10S (multi-process)" checkbox
  • (same as flipping the "browser.tabs.remote.autostart" pref to true and restart Nightly.
  • Known issues: https://wiki.mozilla.org/Electrolysis#What_to_Expect
• Added e10s opt-in prompt for Nightly users
  • E10S_AUTOSTART telemetry for Nightly sessions (26% with e10s enabled)
• bug 1067351 - Fixed file upload crash (e.g. attaching patches to Bugzilla!)
• bug 1064847 - Fixed YouTube video playback
• bug 899347 - Fixed plugin click-to-play
• bug 1068210 - Crashed tab's "Try Again" button reloads just the current page to avoid browser hang

Firefox OS Devices/Porting (ericchou)

<Read Only>

• Gonk team (led by Thomas Tsai & Shawn Ku)
  • Tarako: Spice/Intex feedback issues
  • Dolphin: 9/4 MP. 9/26 on the shelf.
  • Woodduck: Meta bug
  • Flame: KK + v1.4/v2.0 porting

• Bluetooth (members: Shawn Huang, Ben Tian, Jamin Liu, Jocelyn Liu)
  • BLE API discussion on dev-webapi
  • NFC workweek(9/15 ~ 9/19) @ Berlin. Shawn and Jamin gave two talks related to BT/NFC applications.
  • Current status of PTS test for Firefox OS 2.1
    • bug 1064733 - BlueZ - All bugs have been resolved fixed and verified.
    • bug 1064739 - Bluedroid - 7 blockers.
  • bug 1062697 - AVRCP metadata doesn't update on carkit - patch ready (2.0?)

• Media Playback (members: Bruce Sun, Blake Wu, Star Cheng)
  • bug 1053051 - When operate I-frame seek, video player position was not changed - r+ (2.0?)
  • bug 1059679 - BT headset can not play music when do some operates - WIP (2.0?)
  • bug 1033903 - Use GraphicBuffer with android::MediaCodec to reduce the overhead of memcpy video data - WIP (2.2 feat?)

• Device Storage (members: Alphan Chen, Eden Chuang)
  • bug 1060196 - Should forbid ejecting SD card when user is playing music which is stored in SD card - landed (2.1+)
  • Next week team will start to do the initial survey of supporting "Apps on SD card" for Firefox OS. The target will be 2.2.

Performance (vladan)

Fixes:

• bug 1038342: Firefox will now trigger a crash if shutdown hangs for more than a minute
  • "Are we shutting down yet" dashboard with signatures of shutdown hangs: http://yoric.github.io/are-we-shutting-down-yet-/
• bug 937306: Properly fixed our WaitMessage use on Windows. This should address user reports of pages not loading unless the user is moving the mouse. Needed for OMTC to be enabled on Windows for Firefox 33.
• bug 768802: Some good news: Flash 15 fixed a long-standing Flash bug that caused it to steal browser focus whenever the plugin process was launch or relaunched. This bug has plagued users for over 2 years, ever since Flash protected-mode was released.
• bug 918317: A C++ version of AsyncShutdown is now available
• bug 998863: Patch for fixing #1 cause of Firefox multi-second hangs (initialization of out-of-process plugins) will land soon. Please keep an eye out for plugin-related crashes over the next month. Contact aklotz or vladan if you spot any

Telemetry:

• bug 1045108: Unclaimed Telemetry probes will expire in Firefox 40! Please correct the expiration version yourself or comment in bug 1045108, or contact rvitillo or vladan. The unclaimed probes will stop collecting data!
• bug 1067372: We're adding new meta fields to Histograms.json for better automated regression detection

Misc:

• Debugging Talos regressions has been tricky since GraphServer doesn't show sub-test scores, DataZilla is broken (some requests time out persistently), and TreeHerder isn't ready. As a stop-gap measure, Kyle Lahnakoski has exposed the detailed Talos data on his own machine bug 1063324:
  • http://people.mozilla.org/~klahnakoski/talos/Alert-Talos.html#sampleMax=2014-09-16&sampleMin=2014-09-15&os=linux.Ubuntu+12.04&branch=Mozilla-Inbound&platform=x86_64&suite=a11yr.SUMMARY&test=1-customize-enter.all.TART

Ongoing perf work:

• The performance of the new tab animation and the newtab page have regressed considerably since Australis first landed. Fx-team and Perf team will be meeting to work on this in MV on September 29th. See bug 1059558 etc.
• Work on improving performance of the Places system together with the fx-team bug 834545, bug 1043863, etc
• Measuring impact of GC & CC on Firefox UI animation smoothness bug 1017055

Seceng (tanvi)

• Added load information (loadInfo) to all gecko created channels bug 1038756

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.)