Firefox/Channels/Meetings/2020-02-18

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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

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, RyanVM, roland, philipp, Aryx, telin, elan, julien, Luna, wlach

Schedule Update

• 73.0.1 shipped today at 25%
• 74.0b4 shipped yesterday
• Fennec 68.6b2 shipped yesterday

Release Metrics

Report on release criteria metrics from DRIs

• Stability
• Performance
• Security
• Functionality
• Accessibility

Desktop Stability

mc2 dashboard not giving numbers for beta & nightly channels currently

Nightly

mc2 crash rate: N/A, crash incidence: N/A, mc1 summary score: 6.12 thursday mc2 crash rate: 1.37, crash incidence: 1.82%, mc1 summary score: 5.06

New signatures to watch since last week:

• https://bugzilla.mozilla.org/1616005 - Crash in [@ mozilla::net::nsHttpConnection::OnWriteSegment]
• https://bugzilla.mozilla.org/1616004 - Crash in [@ mozilla::image::RecyclingSourceSurface::Unmap]
• https://bugzilla.mozilla.org/1616009 - Crash in [@ neqo_transport::connection::Connection::discard_keys]
• https://bugzilla.mozilla.org/1616254 - Crash in [@ mozilla::dom::ServiceWorkerManager::RegistrationDataPerPrincipal::ScopeContainer::MatchScope]

Top crashers fixed:

• https://bugzilla.mozilla.org/1615832 - Crash in [@ mozilla::css::StreamLoader::~StreamLoader] => Top Crash (300/day, startup crash) mostly fixed with a patch, 20 crashes/day remaining
• https://bugzilla.mozilla.org/1615502 - Crash near null in [@ mozilla::a11y::HTMLLIAccessible::HTMLLIAccessible] =>Top Crash (700/day) fixed
• https://bugzilla.mozilla.org/1615786 - Crash Report [@ mozalloc_abort | abort | rlbox::rlbox_lucet_sandbox::impl_create_sandbox ] => 50/day fixed

Top crashers still unfixed:

• https://bugzilla.mozilla.org/1614259 Crash in [@ mozilla::dom::Location::CallerSubsumes] => marked as blocker for 74 and 75
  • diagnostic assert, only crashes on nightly and devedition

Beta

mc2 crash rate: N/A, crash incidence: N/A, mc1 summary score: 4.15 thursday mc2 crash rate: 1.73, crash incidence: 1.73%, mc1 summary score: 6.20

[74.0b4]

• Crashes with Moz_crash_reason (Attempt to deserialize absent BrowsingContext): https://bugzilla.mozilla.org/show_bug.cgi?id=1616081 - 2% of browser crashes
• https://bugzilla.mozilla.org/show_bug.cgi?id=1614967 - 0.5% of browser crashes
• signatures related to sw-e10s work (gone since 73.0b9 & reappearing in 74.0b):
  • Crash in [@ AsyncShutdownTimeout | profile-change-teardown | ServiceWorkerShutdownBlocker: shutting down Service Workers]: https://bugzilla.mozilla.org/show_bug.cgi?id=1588152 - 1.7% of browser crashes
  • Crash in [@ static mozilla::dom::`anonymous namespace'::QuotaClient::ShutdownWorkThreads::<T>::operator()::<T>::__invoke]: https://bugzilla.mozilla.org/show_bug.cgi?id=1616084 - 0.3% of browser crashes
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1616079 - 0.3% of content crashes

Release

mc2 crash rate: 1.26, crash incidence: 1.17%, mc1 summary score: 3.22 thursday mc2 crash rate: 1.26, crash incidence: 1.17%, mc1 summary score: 9.93

[73.0]

• gtk crash: https://bugzilla.mozilla.org/show_bug.cgi?id=1613130 - 6.4% of browser crashes
  • first indications are that patch going into 73.0.1 didn't help
• https://bugzilla.mozilla.org/show_bug.cgi?id=1581121

Mobile Stability

Fennec

• 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.
• Release: 14.94, Beta: 39.45, Nightly: N/A
  • Fenix Beta migration starting next week, so Beta will eventually stop being tracked similar to Nightly

• 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.

Fenix

New Fenix Beta Released on Monday 24th February 19:00 Swedish time, Was about to be shown at https://www.mwcbarcelona.com/ Mobile World Congress 2020 but that got canceled due to Coronavirus

User Advocacy/ SUMO Report

• raw SUMO Feedback for 73: https://docs.google.com/document/d/1VFDoeWp5B13tYryCpzJe1SQ-7D6MoELuaJHPC-fG9GA/edit#
• "version 73 deleted all saved passwords" https://bugzilla.mozilla.org/show_bug.cgi?id=1615382 has at least 3 reports on SUMO; something to consider for a future dot release?
• megabar feedback
  • sumo: https://support.mozilla.org/en-US/questions/firefox?owner=all&tagged=megabar&show=all <--- [roland] agree with Philipp"early adopters of Firefox 74 beta are complaining: 20200213-1 ← don’t like the “popping out more than usual”, 20201213-2 ←- simple arrow-down button that showed most visitesdsites is gone, 20200215-1 ← “odd and distracting to show suggestions in url bar”
  • bugzilla: https://bugzilla.mozilla.org/buglist.cgi?email1=%25group.editbugs%25&list_id=15112713&chfieldfrom=2020-02-11&emailreporter1=1&chfield=%5BBug%20creation%5D&query_format=advanced&component=Address%20Bar&emailtype1=notsubstring
  • reddit:
    • https://old.reddit.com/r/firefox/comments/f2ipub/is_this_new_zoomed_in_address_bar_ui_here_to_stay/
    • https://old.reddit.com/r/firefox/comments/f2uqku/any_way_to_get_rid_of_or_adjust_this_blue_focus/
    • https://old.reddit.com/r/firefox/comments/f3bpc6/after_updating_firefox_dev_edition_the_search_bar/
    • https://old.reddit.com/r/firefox/comments/f4dnb6/nightly_makes_the_url_bar_big_on_focus_how_do_i/
    • https://old.reddit.com/r/firefox/comments/f3jr9y/url_bar_drop_down_does_not_exist_anymore/
    • https://old.reddit.com/r/firefox/comments/f2exon/updated_to_74_beta_and_url_bar_jump_list_button/
    • https://old.reddit.com/r/firefox/comments/f4exzu/what_is_the_utility_of_megabar/

Roundtable & Special Topics

Post-Mortem (Tues 2wks from GA Release)

• Fx72 & Fx73 joint post-mortem 25-Feb, invites will go out soon