Meeting Notes Meetings notes from the Mozilla community

Notices/Schedule

• 20.0b5 (our fourth week of beta) going to build today
• Another round of CTP blocking: Blocking Flash 11.0.*-11.2.* = 6.9% users affected
  • Will be enabling/testing this week

Key Issues

• War on Orange – “extremely positive response from devs in many intermittent-failure bugs — RyanVM and Ed would like to thank everyone who has chipped in so far! 🙂
• Turning off window.Components for the web

Products/Projects

Firefox Desktop

• Please provide feedback to Dolske and Gavin about draft Q2 desktop goals

Firefox Mobile

Blog shout out (repeat signal ’cause it’s valuable info)

http://gbrownmozilla.wordpress.com/2013/03/02/firefox-for-android-performance-measures-february-check-up/

Usability and Responsiveness

• Landed preff’d off in Fx22 and will ride the trains: bug 716403 – Request to hide the navigation bar when scrolling down content. We’re busy landing follow up fixes including bug 849539, bug 849254, bug 850154
  • Help wanted: take nightly for a spin and set browser.chrome.dynamictoolbar = true via about:config
    
• We’re landing final support for ARMv6 QVGA support shipping in Fx20 on April 2nd; QA is testing inbound build for a fix for bug 840593 – In content UI cut off on small screens
• bug 846774 – Make synchronous events single events to reduce hangs
• Keep eyes open for more outcomes from last week’s work week!

Stability Report [Weekly]

• Bugs that need attention:
  • bug 744836 (… nsThread::Dispatch | nsTimerImpl::PostTimerEvent) – jumped into top 10 on Aurora 21, needs assignee
  • bug 798274 (gfxContext::PushGroupAndCopyBackground) – came back to be top 10 in Nightly, assigned to Bas but no action for months
  • bug 812881 (libsomxcore.so) – #2 on Android release, assigned to cdouble but no action in >6 weeks
  • bug 846465 (libstagefright.so, HTC devices, JB) – #2 topcrash on Android Beta, needs assignee
  • bug 782223 (libGLESv2_tegra.so, Nexus 7, JB) – #3 topcrash on Android Beta, needs assignee

• Note:
  • bug 752828 – android.database.sqlite.SQLiteDatabaseLockedException: database is locked at android.database.sqlite.SQLiteStatement.native_executeSql(Native Method) on ICS
    • STR in bug, workaround did not work ( bug 843029 )

• Mobile :
  • if anyone has run into the following bugs, please contact QA/Dev for Firefox for Android Team:
    • bug 782223 – crash in libGLESv2_tegra.so@0x4ae.. on Asus Nexus 7 (NVIDIA Tegra 3) with JB
    • bug 834243 – crash in mozilla::layers::LayerManagerOGL::Initialize with abort message: “We need a context on Android”
    • bug 795675 – crash in JSC::Yarr::interpret mainly on JB

Snappy [Bi-Weekly]

• March 7th Snappy minutes

• Telemetry dashboards have skewed data for the “idle-daily” dashboard view — the telemetry submission from multi-day sessions are given too much weight. Metrics has made the “saved-session” view the default until the data is cleaned up. You may need to re-evaluate any past analyses,
  • Comparison: oi49.tinypic.com/1zhp1w.jpg

Startup & Shutdown

• bug 845907: Generic readahead functions. This gives us a consistent way to warm IO caches
  • bug 810151: Readahead of of omni.ja file – 60% drop in omni.ja startup read time on Windows test. Will land soon

Tab Strip

• bug 842967: Refresh driver was re-targeting the same timestamp
• Australis is now on par with default theme: http://mikeconley.ca/blog/2013/03/01/australis-curvy-tabs-more-progress/

Content

• Networking team is working on a new http cache design: https://wiki.mozilla.org/Necko/Cache/Plans

HELP WANTED:

• bug 715376: Nathan Froyd’s implementation of per-page event queues has been block on DOM tests for a while. He needs help passing/fixing the tests

Hangs

• bug 566746: Neil Deakin’s refactor of form history is almost complete. This will eliminate a common source of main-thread I/O jank
• bug 669034: David Teller is working on a Session Storage refactor. He is cutting the state collection/serialization into chunks and moving I/O off the main thread

Add-ons

• Irving and Felipe are working on Add-on Manager redesign, expecting startup wins and less main-thread jank: https://etherpad.mozilla.org/snappy-addon-manager

Tools

• Thunderbird profiling support

Mobile Web Compat [2nd Tuesday of Month]

Outreach

• A couple of weeks ago I blogged Help Wanted: Firefox OS UA Detection
  • Fixes for Dailymotion, Dropbox, and Stack Overflow
  • New introductions for Abril, BBC, Bing, eHow, ESPN, Globo, Google (Accounts, GMail, Maps, News), Orange, TechTudo, ThinkGeek, Yahoo, Yelp
  • The best way to get sites fixed is with technical contacts, please share!

• UA detection frameworks WURFL and DeviceAtlas recognize Firefox OS as mobile

Gecko

• Two Gecko Firefox OS compat issues
  • bug 832923 Implement <input type=’file’> on B2G (blocks Facebook and Twitter)
  • bug 850209 – Support h.264 in <video> element (blocks Web video but does have workaround – use Web activity)

• Firefox for Android Tablet UA to remain unchanged
  • bug 829596 Remove “Tablet” from UA string of Firefox on Android tablets

Misc

• Req for Web Compatibility Engineer

• New meeting time, Mondays, 1-2pm PT

Roundtable

OrangeFactor Update

• Last week, we lost all previous OrangeFactor data due to a datacenter migration.
• Last week’s OrangeFactor: 4.03 (Previous Week: lost)
• Top 10 open trunk intermittent failure bugs:

• Landed a patch for bug 848943 on inbound this morning (yay!), though there appears to be a related failure from it now (boo!).
• Currently without an owner: bug 822321, bug 663657, bug 788999, and bug 603147.
• Progress on bug 833769 in the last week. No progress on bug 761987 since mid-February.
• 25 intermittent failures fixed in the last week (thanks!) – List

Designing a New HTTP Disk Cache

The networking team has started the process of designing a new HTTP disk cache. We have lost confidence in our ability to improve the existing disk cache as necessary. We just started, but you can monitor plans as they evolve via this page. Feel free to join the discussion if you have ideas, contact Josh Aas.