Meeting 2024-09-10

• Team calendar

  • Next on Necko triage: Ed

• New contributors / Friends of Necko THANK YOU!!

  • amarchesini@mozilla.com

    • 1903403 - Do not reject cookies containing %x9

    • 1913161 - Implement a max-age cap for cookies

    • 1909980 - Duo 2fa hits "403 forbidden" if your system clock is wrong, only in Firefox

  • aborovova@mozilla.com

    • 1916105 - Perma /fetch/api/basic/request-upload.h2.any.html | Fetch with POST with empty ReadableStream - assert_equals: expected "" but got "[object ReadableStream]" when Gecko 131 merges to beta on 2024-09-02

  • tannal2409@gmail.com

    • 1916102 - Remove network.url.strict_protocol_setter pref

• Round Table

  • [kershaw] Bugs that might affect page load metrics

    • 1917528

      • Duplicate telemetry recording for mDefaultLoadRequest
      • Fixed

    • 1678312

      • TLS handshake timings are not correct
      • About to land

    • [Kershaw] Post in #perf #tls

• Active Projects roadmap Fx131 rel Oct 01, Fx132 freeze Sep 26

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

    • No changes again (sept 10). 3PCD will proceed in a phased approach

      • 131: Enable in nightly all windows(dry run)

        • Check back once 131 hits release and see the telemetry

      • 132: Enable in PBMode and ETP Strict to release

      • 133: Release telemetry on partition limit will start, review it

      • 134: All windows in release (targeting January)

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

  • Fetch keepalive: (in progress, Target Fx132) 

[Sunil]

• Incorporated feedback from Eden, waiting for final patch approval

• HTTP Priorities Experiments (in progress, target Fx 132)

  • [acreskey]

    • Bug 1915490 -  privacy.annotate_channels.strict_list.enabled in Nightly and Beta leads to slower page load

    • Bug 1915186 -  UrlClassifierCommon::AnnotateChannel lowers priority of channels requested at high priority

    • Bug 1915866 -  Optimize Class of Service tailing and tracker request postponement

      • Experiment Brief incoming

    • Meta: 1797715 - [meta] Fetch Priority (was Priority Hints)

    • HTTP/2 extensible prioritization scheme would be helpful

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

  • [kershaw]

    • Chrome support implemented (patch not landed yet)

    • How to run the test:

      • ./mach try fuzzy –full

      • test-linux1804-64-qr/opt-browsertime-network-bench-firefox-h3-upload

        • H3 Download: Firefox 850.45 Mbps, Firefox NSPR 838.01 Mbps, Chrome 127 620.6 Mbps
        • H3 Upload: Firefox 349.24 Mbps, Firefox NSPR NA, Chrome 127 547.85 Mbps

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

  • [Ed] Addressing more feedback on defaultURI phab/D207810  

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

  • (sekim) Migrated few other probes using glean’s new labeled timing distribution

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

  • Milestone 1 - end-to-end integration

    • On Android x86 Focus and Fenix CI startup tests have failed due to a seccomp panic after a `recvmmsg` call.

      •  Fix blocked on mozilla-central moving to `windows` crate `v0.59.0`. See Matrix discussion.

    • Report of network.http.http3.use_nspr_for_io set to false breaking HTTP3/QUIC on _Windows on ARM.

      • Thus far not reproducible on other _Windows on ARM_ machines. Both native and as VM.

      • See further discussion in Slack thread.

  •  Milestone 2 - ECN

    • Neqo v0.9.0 released, exposing ECN metrics in neqo_transport::Stats.

      • Landed in mozilla-central to phabricator#D221019.

      • Update triggers build failure on tier 2 Windows 2012 platform which is now[fixed with  phabricator#D221284.

    • Update phabricator#D220062 to use Glean to expose ECN metrics.

  • Milestone 3 - Benchmarks and metrics

    • Intermediate Thread-local buffered metrics proposal phabricator#D216034 ready for review.

    • Long term fix in Glean is work-in-progress mozilla/glean#2948.

    • Draft for migrating Http3Session::CloseConnectionTelemetry to Glean bugzilla#1917778

  • Milestone 5 - multi-packet state machine

    • Draft removing allocations in UDP IO send and receive path mozilla/neqo#2093

• Performance work: 

  • [acreskey] 

    • Bug 1915700 - Expose socket process network markers with MarkerThreadId::MainThread()

    • Fyi: Bug 1915717 -  [network-markers] Expose http protocol version for a request in the profiler network tab

    • Helping Robin Marx get answers to priority questions

      • Bug 1915852 -  Document network request scheduling and prioritization system

      • Bug 1917649 -  Duplicate img cached requests appear in the network monitor

    • Performance Telemetry Reports no longer public

  • New experiments:

    • OMT Decompression for Beta complete next steps??