Meeting 2024-06-18

• Team calendar

  • Next on Necko triage: Randell

• New contributors / Friends of Necko THANK YOU!!

  • bugmail@asutherland.org 

    • Bug: 1900681 XMLHttpRequestMainThread::DisconnectFromOwner should not call Abort for `mForWorker` XHRs because it double-clocks the state machine 

  • fwang@igalia.com 

    • Bug: 1881040 Use the destination to refine the fetchpriority mapping of FetchDriver::HttpFetch 

    • Bug: 1900764 urgency of fonts in fetchpriority-urgency.h2.html are not affected by fetchpriority 

  • ctuns@mozilla.com

    • Bug: 1902560 Perma [tier 2] /fetch/fetch-later/new-window.tentative.https.window.html | A same-origin window[target=''][features='0'] can trigger fetchLater. - Test timed out 

• Round Table

  • (greg) Standards positions:

    • Bug: 1475599 Implement Cookie-Store API 

      • Web compatibility with Chrome and Safari

        • Safari recent, web compatibility risk is higher

    • Request standards position review?

    • Randell ping Simon in channel 

      • Mondays standards meeting

    • Zstd - standards position update? 

      • We’re positive already: https://github.com/mozilla/standards-positions/issues/775

      • The dashboard shows an old position, and needs to be updated

      • Will bring to standards meeting monday

• Active Projects roadmap Fx128 rel July 09, Fx 129 soft freeze July 04 

  • Native HTTPS RR Implementation (in progress, target Fx129)

    • Performance regression identified in Nightly https://bugzilla.mozilla.org/show_bug.cgi?id=1895908#c15 

    • [kershaw]

      • Bug 1898191 Improving HTTPS RR Handling to Mitigate Performance Regression

        • https://glam.telemetry.mozilla.org/fenix/probe/networking_http_channel_page_open_to_first_sent/explore?aggType=avg&currentPage=1&ref=2024022904&timeHorizon=ALL&visiblePercentiles=%5B99%2C95%2C75%2C50%2C25%2C5%5D 

        • (greg) Looks like we have fixed performance regression - confirmed

          • [Andrew] Consider future optimizations for DoH - HTTPS RR

        • [acreskey] FYI, full query

          • Cached performance pulse

          • Do we know perf impact on Page_open_to_first_sent with DoH?

            • Smaller scale desktop regression? dashboard

        • [kershaw] another potential blocker:

          • Bug 1895741 Intermittent valgrind-test | 28 bytes in 1 blocks are definitely lost at malloc / __res_context_send / __res_context_query / __res_context_querydomain

  • 3rd Party Cookie Deprecation (in progress, target Fx132)

    • [Ed] Received some feedback on patches, addressing this week

      • https://phabricator.services.mozilla.com/D201757

      • https://phabricator.services.mozilla.com/D203521

  • Fetch keepalive: (in progress, Target Fx129) 

    • [Sunil] Merged 1871376  and 1871377. Keepalive WPTs now pass except for resource limits tests.

    • [Sunil] Working on patch for Bug 1871378 

    • [Sunil] Won't be able to land in Fx129.

  • HTTP Priorities Experiments (in progress, target Fx130 )

    • Valentin to share this week 

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

    • [kershaw]

      • Test machines should be ready soon

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

    • (sekim): Incorrect parsing: file:c:\\foo\\bar.html against file:///tmp/mock/path landed.

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

    • [acreskey] Please continue to #ifndef non-essential probes on Android, I am re-raising this

  • Fast UDP I/O in Firefox

    • Milestone 1 - quinn-udp in Firefox

      • Ready for review

      • https://phabricator.services.mozilla.com/D212959

      • Looking into telemetry probes to add.

      • Discussion on static check disallowing Rust network calls.

    • Milestone 2 - sending and receiving ECN

      • Blocked on https://github.com/mozilla/neqo/issues/1925

  • Performance work: 

    • [acreskey] Landed increase socket pool of 40 to 100, android

      • Bug 1889771 - Increase network.http.max-connections on Android nightly (currently 40 (900 on desktop))

      • Meta: https://bugzilla.mozilla.org/show_bug.cgi?id=1903115

        • Probes in https://bugzilla.mozilla.org/show_bug.cgi?id=1901855

    • New experiments:

      • Performance Calibration (A/A/A) on Fenix, live (release channel might be affected, some probes)

        • Experiments completed; need changes to Performance Telemetry Reports to compare glean timing distributions

      • OMT Decompression + html5Parser, cssLoader 

        • Experiment Brief

        • Data ticket

        • Potential conflict with HTTP Priorities, push OMT first