Firefox/Channels/Meetings/2021-03-09

Channel Meeting Details

• Tuesdays at 10am and Thursdays at 7:30am Pacific Time
• Riot #release-drivers for backchannel
• Past meeting notes: https://wiki.mozilla.org/Firefox/Channels/Meetings

Video/Teleconference Details

• Zoom Meeting ID: 536 097 768
• https://mozilla.zoom.us/j/536097768
• +17207072699,,536097768# US
• Find your local number: https://zoom.us/u/agItTmqIu

Attendees

jcristau, RyanVM, pascal, Aryx, kbrosnan, telin, JR Johnson, dveditz

Schedule Update

• 87.0b8 gtb today
• 86.0.1 coming later this week, collection of fixes not a chemspill, mostly stability and functional regressions fixes

Desktop Stability

Nightly

mc2 crash rate: 2.06 (+0.01 compared to previous week), crash incidence: 1.62% (-0.18pp)

• backdrop-filter: RustMozCrash [@ webrender::spatial_tree::SpatialTree::get_relative_transform]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1649668
  • got more frequent at the end of February, scheduled for investigation this week
• Crash in [@ IPCError-browser | ShutDownKill | EMPTY: no crashing thread identified; ERROR_NO_MINIDUMP_HEADER]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1614564
  • Already one of the top crashers and saw an increase of 30-50% in the last 2 weeks, scheduled for investigation this or next month
• [@ IPCError-browser | ShutDownKill | trunc | nsThread::Shutdown | mozilla::ChildProfilerController::GrabShutdownProfileAndShutdown]
  • part of https://bugzilla.mozilla.org/show_bug.cgi?id=1613798
  • went from 1 Nightly crash/day to 9 over the last 2-3 weeks

Beta

mc2 crash rate: 1.91 (+-0), crash incidence: 1.36% (-0.22pp)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1696409 fix going into b8: [@ core::option::expect_failed | style::properties::UnparsedValue::substitute_variables]
• https://bugzilla.mozilla.org/show_bug.cgi?id=1693137 might also get fixed there [@ XDRParserAtomTable<T>]
  • through https://bugzilla.mozilla.org/show_bug.cgi?id=1693625

Release

mc2 crash rate: 1.42 (+-0), crash incidence: 0.75% (-0.72p)

Mobile Stability

Fenix

• Release looks good crash rate is under half of the team's target
• Beta 87-beta3 has a #3 crash that is from one user, https://crash-stats.mozilla.org/signature/?product=Fenix&signature=mozilla%3A%3AReflowInput%3A%3AReflowInput&version=87.0.0-beta.3
  • Talked to emilio and it does not look useful
• Nightly builds were stuck on older GV over the long weekend, should be back to normal with today's build

QA

Nightly

Aurora / Dev Edition

Beta

Mobile

Action items

Feature Status Review

• Fx87 Beta overall feature status is On Track
  • Deliverables for Proton in Fx87 we're considered challenged in recent weeks but I would now consider this as 'on track' as we've slipped scope to Fx88
• Fx88 Nightly overall feature status is On Track
  • AVIF image format remains on track and planned for Fx88 rollout. Intent to ship email being drafted and about to be sent
  • (Proton) Tabs bar was considered challenged for Fx88 devcomplete. Forecast has been shifted to Fx89

SUMO Report

• Firefox Screenshot overhall in 86. If window.devicePixelRatio exceeds 100% -- these issues:
  • Standard Firefox configuration https://bugzilla.mozilla.org/show_bug.cgi?id=1696758
  • privacy.resistFingerprinting set to true https://bugzilla.mozilla.org/show_bug.cgi?id=1696637

Roundtable & Special Topics

• Upcoming OS support decisions
• The bugs in this doc. Can we share with NDA'd vs Non NDA'd contributors?
  • notes are public on the wiki, most of the bugs are public too

Post-Mortem (Tues 2wks from GA Release)