Firefox/Channels/Meetings/2021-03-02

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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

REMEMBER

These notes are read by people who weren't able to attend the meeting. Please make sure to include links and context so they can be understood.

Attendees

pascal, jcristau, RyanVM, Aryx, TaniaM, dveditz,

Schedule Update

• 87.0b4 (desktop) and 87.0.0-beta.2 (fenix) are out at 100%
• 87.0b5 gtb later today
• Fenix 86.1.1 and Focus/Klar 8.13.1 at 100% (from 99%)

Desktop Stability

Nightly

mc2 crash rate: 2.05 (+0.14 compared to previous week), crash incidence: 1.80% (+0.21pp)

• Mission Control v2 shows increase in Nightly crash rate on macOS, have asked #stability for insights. Has anything related landed on 2021-02-22 or 2021-02-23?
  • Macos specific landings on :
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1694186
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1694089
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1693234
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1692944
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1690842
    • https://bugzilla.mozilla.org/show_bug.cgi?id=1422855

• Partial update generation for Windows in Lithuanian fails. Already failed for previous Nightly but that got fixed by rerunning the tasks which hasn't been successful for the latest Nightly. Issue is being investigated today, unknown what branches and locales are at risk. https://bugzilla.mozilla.org/show_bug.cgi?id=1695898
• Fixed in next Nightly: https://bugzilla.mozilla.org/show_bug.cgi?id=1678330 Crash in [@ shutdownhang | mozilla::TaskController::GetRunnableForMTTask | nsThreadManager::SpinEventLoopUntilInternal] (#15 of nightly crashes)
• 3 Nightly respins this week: https://bugzilla.mozilla.org/show_bug.cgi?id=1678505 (panning/zooming crashes), https://bugzilla.mozilla.org/show_bug.cgi?id=1646817 (process switching on macOS, same issue like for previous landing), https://bugzilla.mozilla.org/show_bug.cgi?id=1693541 (font crash on Linux)

Beta

mc2 crash rate: 1.91 (+0.48), crash incidence: 1.58% (+0.56pp)

• crash in [@ brush_image_TEXTURE_2D_frag::brush_fs ]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1692815
  • affects sw-wr, only in early beta

• crash in [@ core::option::expect_failed | style::properties::UnparsedValue::substitute_variables]
  • no bug yet?
  • https://crash-stats.mozilla.org/signature/?signature=core%3A%3Aoption%3A%3Aexpect_failed%20%7C%20style%3A%3Aproperties%3A%3AUnparsedValue%3A%3Asubstitute_variables

Release

mc2 crash rate: 1.42 (+0.12), crash incidence: 0.83% (-0.11pp)

Mobile Stability

Fenix

• https://bugzilla.mozilla.org/show_bug.cgi?id=1651221 top crasher in 86.1.1, higher than in 85, investigation and potential fix in https://github.com/mozilla-mobile/fenix/issues/17714
  • This has not affected the crash telemetry so this may be crash data being processed better. telemetry at https://sql.telemetry.mozilla.org/queries/75521#188520 SSO
  • possibly not a release driver in itself
• Filed a couple crashes for Fenix/AC
  • https://github.com/mozilla-mobile/fenix/issues/18239
  • https://github.com/mozilla-mobile/fenix/issues/18238

QA

Nightly

• 2 PI tickets for Fx88 but working mostly on Proton feature test planning
• Proton
  • Test Plan creation and review
  • Kick-off meetings
  • E2E Test Plan discussion

Beta

• On track - Prelim reports are due tomorrow (as per the updated milestones)
  • Final sign-off will be provided next Wednesday

Roundtable & Special Topics

Post-Mortem (Tues 2wks from GA Release)

• 85 post mortem next week
• 86 postmortem: March 16 after the channel meeting

[Tania] have a conflict, March 10th, same time?