Firefox/Channels/Meetings/2020-01-21

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Channel Meeting Details

• Tuesdays at 10am and Thursdays at 8am Pacific Time
• irc.mozilla.org #planning for backchannel
• Past meeting notes: https://wiki.mozilla.org/Firefox/Channels/Meetings

Video/Teleconference Details - NEW Zoom Meeting ID: 266 532 573 https://mozilla.zoom.us/j/266532573 +17207072699,,266532573# 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

tania, RyanVM, philipp, pascal, telin, aryx, julien, dveditz

Schedule Update

• 72.0.2 shipped yesterday at 25%
  • aiming to go 100% tomorrow if there are no blockers
• also shipped 68.4.2 ESR and fennec

• Automated betas running on schedule. 73.0b7 shipped yesterday, 73.0b8 gtb later today & shipping tomorrow

Release metrics

Report on release criteria metrics from DRIs

• Stability
• Performance
• Security
• Functionality

• Fx73 release metrics are generally trending in the right direction, but not fast enough for RC
• Overall quality is putting Fx73 at risk right now
  • Need more timely replies to NI requests and bug triage
• Overholt to ask about disabling sw-e10s
• Any decisions about Fx73 schedule changes need to be made ASAP
  • Ryan and Thomas to meet later today to discuss options

Off-train releases

Current Shield studies: https://strategy-and-insights.mozilla.com/shield-studies/index.html

Stability

new mc2 url: https://metrics.mozilla.com/public/sguha/mc2/missioncontrol_v2.html

Nightly

mc2 crash rate: 1.82, crash indicence: 1.97%, mc1 summary score: 5.61 thursday mc2 crash rate: 2.00, crash indicence: 1.75%, mc1 summary score: 6.66

• https://bugzilla.mozilla.org/1610485 top crash in Jan 21, regressor backed out and nigtlies being respun
• https://bugzilla.mozilla.org/1610158 medium crasher over the last week
• nightly crash triage roster - most of the spots now empty: https://wiki.mozilla.org/NightlyCrashTriage

Beta

mc2 crash rate: 1.82, crash indicence: 1.82%, mc1 summary score: 4.90 thursday mc2 crash rate: 1.72, crash indicence: 1.46%, mc1 summary score: 6.16

[73.0b7]

• Crash in [@ mozilla::net::PDocumentChannelParent::SendRedirectToRealChannel]: https://bugzilla.mozilla.org/show_bug.cgi?id=1606901 - 7.6% of browser crashes
  • patch on nightly, needs uplifting to determine if it's working or not
• Crash in [@ mozilla::gfx::AdjustedPattern::operator mozilla::gfx::Pattern*]: https://bugzilla.mozilla.org/show_bug.cgi?id=1604800 - 5.2% of tab crashes
  • printing related; various speculative backouts have been tried - without success so far
  • new backout patch attached for 73.0b8
• Crash in [@ mozilla::interceptor::ReadOnlyTargetBytes<T>::EnsureLimit]: https://bugzilla.mozilla.org/show_bug.cgi?id=1604008 - 1.1% of browser crashes
  • 3rd party induced crash (0patch); follow-up patch for the fix has just landed on nightly
• Crash in [@ js::ErrorObject::init]: https://bugzilla.mozilla.org/show_bug.cgi?id=1608760 - 0.6% of browser crashes
• SW-e10s related crashes:
  • AsyncShutdownTimeout | profile-change-teardown | ServiceWorkerShutdownBlocker: shutting down Service Workers: https://bugzilla.mozilla.org/show_bug.cgi?id=1588152 - 2.4% of browser crashes
    • no obvious progress in the bug
  • Crash in [@ mozilla::dom::ServiceWorkerRegistrationInfo::MaybeScheduleTimeCheckAndUpdate]: https://bugzilla.mozilla.org/show_bug.cgi?id=1609665 - 0.6% of browser crashes
    • diagnostics intended to land in b7 had to be backed-out
  • Crash in [@ mozilla::dom::ServiceWorkerManager::UpdateInternal]: https://bugzilla.mozilla.org/show_bug.cgi?id=1604943 - 0.4% of browser crashes
    • got wontfixed for 73 early in the cycle, but the volume turns out to be non-trivial

Release

mc2 crash rate: 1.49, crash indicence: 1.07%, mc1 summary score: 2.57 thursday mc2 crash rate: 1.41, crash indicence: 1.07%, mc1 summary score: 2.84

[72.0.2]

• nothing apparent in stability data that should prohibit a full rollout of 72.0.2
• stability fixes that were uplifted have apparently been successful: https://bugzil.la/1607703,1607716,1609184
• sudden spike in [@ mozilla::ScriptPreloader::CacheWriteComplete]: https://bugzilla.mozilla.org/show_bug.cgi?id=1610246
  • seems independent from anything we've shipped, affecting zh-cn builds
• Crash in [@ OOM | large |...| mozilla::gfx::SourceSurfaceRawData::GuaranteePersistance]: https://bugzilla.mozilla.org/show_bug.cgi?id=1604535 - 1.3% of tab crashes

Mobile

• Crash rate is calculated based on usage hours (the time Firefox is actively used).
• Usage hours will be significantly lower on Fennec than on desktop Firefox, so we can't compare mobile rates to desktop rates.

¯\_(ツ)_/¯

QE

Nightly

• fairly low volume of PI requests for all the QA teams.
• Search fetaures are waiting for meeting with Engineering (email sent last week), work not started.
• 4 weeks cycle updates - no major concerns from QA, planning is on track

Beta

• on track, prelim reports are expected by end of this week
• DoH US Rollout: https://jira.mozilla.com/browse/PI-445, QA is awaiting for exception approval process to be completed.
  • QA may not be able to provide prelim status report for this work, pre-release sign-off will be shared as per the schedule.

Roundtable

• RelMan coverage next week
  • Ryan on PTO, Julien and Pascal will keep an eye on approval requests
• Updating; https://wiki.mozilla.org/Release_Management/Release_owners
  • Fx74 is missing several owners. Do we have a new owner for Fx75? Pascal is listed for both 74 and 75.
• (Softvision RO) will be out on 24 Jan

Special Topics

Post-Mortem (Tues 2wks from GA Release)

• 72 PM week after Berlin, exact timing TBC