Meeting 2024-11-05

• Team calendar

  • Next on Necko triage: Valentin

• New contributors / Friends of Necko THANK YOU!!

  • Henri Sivonen (:hsivonen)

    • Bug: 1887898 Improper URL parsing in servo/rust-url

  • John Schanck [:jschanck]

    • Bug: 1926127 Enable mlkem768x25519 in h3 in early beta and earlier

  • Robert Longson [:longsonr]

    • Bug: 1928694 Replace mozilla::clamped with std::clamp

  • Andrea Marchesini [:baku]

    • Bug: 1928123 Crash [@ IsCurrentThread]

  • Cosmin Sabou [:CosminS]

    • Bug: 1925999 Perma [tier 2] netwerk/test/unit/test_http3.js | xpcshell return code: 0 | testOnStartRequest - [testOnStartRequest : 155] 0 == 2152398919

• Round Table

  • [Greg] Globs reported networking issue NS_ERROR_CONNECTION_REFUSE hitting server on local LAN, Sunil looking at logs 

• Active Projects roadmap Fx132 rel Oct 29, Fx133 rel Nov 26, Fx134 code freeze Nov 21 

  • Firefox Essential Internal Services Toughening[FEISTY] (in progress, TBD)

    • Approved - ready to go

    • Have prototype 

  • DoH Enablement - Fenix and Focus (in progress, TBD)

    • Approved - ready to go

  • 3rd Party Cookie Deprecation (in progress, target Fx134)

    • [Ed] Due to CHIPS incident and 3PCD experiment, we are pushing back the rollout plan, probably won’t make 134:

      • 134: 

        • 3PCD experiment

        • re-enable chips, ride the trains to release (Jan 7)

          • Note: CHIPS-related breakage

      • >134

        • (pending experiment): 3PCD in all windows in release

          • Note: 3pcd-related  breakage

      • >136

        • (pending all-windows): “Migration”/deletion of TCP cookies (non-chips partitioned)

  • Fetch keepalive: (riding the trains, Target Fx133) 

    • – enter updates – 

  • Firefox/Chrome benchmark test suite (in progress, Fx132)

    • First cut of download results: https://lookerstudio.google.com/reporting/f5fbaacd-a473-4daf-bf22-faa3d3c8391f/page/DO9EE

      • Update TC scripts 

      • Ship this week or next 

    • Needs validation, maybe hand testing 

    • Related: Chromium’s loadline framework

      • https://chromium.googlesource.com/crossbench/+/refs/heads/main/config/benchmark/loadline

    • (greg) Perf Infra Hardware review Performance Hardware Review

      • How long test take to run and how many tests are we running 

    • [kershaw]

      • Landed a change to make the test more reliable.

• Interop 2024 URL (in progress, target H2 2024)

  • No progress

• necko-glean: (sekim) Landing glean patches using #ifndef ANDROID blocks tracking such blocks using Bug 1901798  

  • – enter updates –

• Fast UDP I/O in Firefox (in progress, target H2 2024)

  • – enter updates –

• Implement WebTransport based on HTTP/2

  • – enter updates –

• Performance work: 

  • Fenix pref-flip experiment live and actually working

    • https://experimenter.services.mozilla.com/nimbus/fetch-priority-fenix-nightly/summary

    • Related bug on about:studies

      • https://bugzilla.mozilla.org/show_bug.cgi?id=1928658

  • In-progress experiments:

    • https://mozilla-hub.atlassian.net/wiki/spaces/FIREFOX/pages/11047744/Experiments+Necko#Schedule

  • Working on:

    • Bug 1906726 - Fenix pageload progress bar can take multiple times longer to complete than Chrome (e.g. 50 seconds vs 10 seconds)

  • Pageload Event properties by TRR domain

    • https://sql.telemetry.mozilla.org/dashboard/pageload-event-by-trr_domain?edit&p_channel=nightly&p_cutoff_value_seconds=60&p_days=20&p_group_by=submission_date&p_minimum_entries_group=10000&p_product=firefox_desktop

      • Note: only counts non-zero dns lookup times

        • https://searchfox.org/mozilla-central/source/dom/base/Document.cpp#2142-2147

  • [sunil]

    • OnDataFinished and OnStopRequest probes indicate we still experience delays in between dispatching and running OnDataFinished in the background thread. 

    • Modified code to dispatch directly to the background thread skipping the queue. Testing ongoing.