Firefox/Channels/Meetings/2020-08-27

Channel Meeting Details

• Tuesdays at 10am and Thursdays at 8am 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, ajoltan, mberlinger, cionce, ebalazs, Aryx, tzsoldos, obotisan, phorea, cfogel

Schedule Update

• 80.0 updates at 25% tuesday, disabled wednesday

• ESR 78.2 and 68.12 shipped tuesday
  • last planned esr68 release

• fenix 79.0.5 rollout complete (US/CA as of today)

• 81.0b1 at 25% on tuesday, 81.0b2 at 50% wednesday, 81.0b3 at 100% tomorrow

Desktop Stability

Nightly

mc2 crash rate:1.31 (-23% mostly less content crashes), crash incidence: 1.65% (-14%), mc1 summary score: 5.43

• memcpy | nsJARInputStream::Read
  • 6.8% of all crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1551562
• core::option::expect_none_failed | remote::startup::handler::new_remote_agent_handler
  • 1.06% of all crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1660893
  • no assignee yet, but discussion and investigation
• RetainedDisplayListBuilder::MergeDisplayLists
  • 1.73% of all crashes combined
  • recent regression, fixed in https://bugzilla.mozilla.org/show_bug.cgi?id=1660490
  • we will have to check if this also fixes MergeState::ProcessItemFromNewList
• nsGlobalWindowOuter::Print
  • 0.78% of all crashes
  • regressor identified, developer is working on a fix

Beta

mc2 crash rate: 2.25(+8.3%), crash incidence: 2.6% (+70%), mc1 summary score: 10.48

• mozilla::ErrorLoadingSheet
  • fixed by backout in 80.0 rc2 but still with us in 81
  • 14.76% of browser crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1656261
• memcpy | nsJARInputStream::Read
  • 12.43% of browser crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1551562

Release

mc2 crash rate: 1.44 (-6.2%), crash incidence: 0.89 (-31%)%, mc1 summary score: 6.20

• shutdownhang | mozilla::TaskController::GetRunnableForMTTask | mozilla::SpinEventLoopUntil<T> | mozilla::Preferences::SavePrefFileBlocking
  • 2.26% of browser crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1636925 (wontfix)
• mozilla::widget::WindowHook::AddMonitor
  • 1.9% of browser crashes
  • mostly affecting German builds
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1661485
• mozilla::gfx::Matrix4x4Typed<T>::PreScale
  • 1.3% of browser crashes + 1.44% of content crashes
  • cpu-specific crash (intel gemini lake)
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1661169

Mobile Stability

Fenix

• May have a fix for the 79.0 top crash https://bugzilla.mozilla.org/show_bug.cgi?id=1659850

QA

Nightly

Aurora / Dev Edition

Beta

[cionce]

• In progress: Regression testing round 1
  • One bug uncovered so far - https://bugzil.la/1661253
• WebRTC testing also in progress - no issues so far.
• Modernized Print UI - Ongoing Nightly 82 exploratory test run for Bug 1636728 (Considered high risk of causing regressions).
  • First feature OFF state test run in 81 Beta starts tomorrow

[cfogel]

• PDF improvments - Update pdf.js to version 2.6.302 caused several new issues, that are already in attention of Feature Owners

[dcicas]

• Language packs updates - We are currently updating the Test Plan and High Level Test Cases to resolve what issues we had and things should be on schedule

Mobile

[ebalazs]

• Firefox 80.0.1-RC.1 and Firefox 80.1.0-RC.1 - signed off with status GREEN
• Focus Beta 8.7.1 GV 80 - signed off with status GREEN

Action items

Feature Status Review

SUMO Report

Roundtable & Special Topics

• [julien] we might need to find a new time for this meeting as it looks like it's going to clash with the platform and desktop org meetings going forward. earlier is harsh on Pacific time, later is harsh for Romania. stay tuned.

Post-Mortem (Tues 2wks from GA Release)