Necko Team – Weekly Status Meeting Notes

Date: 2026-04-14
Edition: April
Facilitator: Greg
Next on Triage: Randell Jesup
Quality Report Coordinators (April): Kershaw Jang / Max Inden

Round Table

Networking in Content Process (Strategic Discussion)

• Proposal discussed: move networking into content process.

• Potential benefits:

  • Reduced IPC overhead

  • Direct delivery of content to rendering process

  • Better isolation and storage partitioning

• Major challenges identified:

  • Resource management complexity

  • File/network access coordination

  • Connection sharing vs isolation trade-offs

• Decision:

  • Move discussion from Slack → Google Doc

  • Schedule deeper brainstorming at next NSS Necko meeting.

Roadmap Planning (Upcoming)

• Reminder: Roadmap planning session this Thursday.

• Team asked to:

  • Review and add discussion topics ahead of meeting.

• Key planned topic:

  • Reducing legacy telemetry cost

Legacy Telemetry Cleanup

• Focus:

  • Remove mirrored pings / duplicate probes

• Action:

  • Review top 25 probes

  • Evaluate 6 legacy Necko probes:

    • Remove OR

    • Stop mirroring OR

    • Migrate to Glean

• Associated cleanup:

  • Remove/update related Redash queries

Team Check-ins (Highlights)

• Valentin

  • Progress on cookie fixes (autoland, uplift pending).

  • Continuing telemetry and LNA-related work.

• Sunil

  • Updated speculation rules project plan.

  • Working on:

    • LNA workers merge

    • Prefetch-related bugs

  • Preparing next phase work.

• Oskar

  • Reduced availability (20h/week).

  • Working on:

    • Slow start experimentation

    • SEARCH algorithm prototype

  • Investigating drain phase relevance.

• Max (BER)

  • Released Happy Eyeballs Rust crate v0.5.

  • Working on:

    • IPv4 optimization

    • MASQUE Phase 3 design

    • WebTransport/WebSocket integration.

• Kershaw

  • Fixed API blockers.

  • Handling WebSocket-related test failures.

  • Continuing API work.

Important Business

Priority Queue

Active Projects

FEISTY

• Remote Settings and AMO work complete.

• Downloads and updates now completed and in review.

DoH Enablement (Fenix & Focus)

• Ongoing rollout and monitoring.

• Continued performance observation.

Local Network Access (LNA)

• Rollout moved to Fx151 (blocking issue).

• Work:

  • LNA for workers (pending approval)

  • Prompt behavior tuning

QUIC / Slow Start

• Loss-detection bug fixed.

• Restarting experimentation based on metrics.

• SEARCH implementation nearing review.

Happy Eyeballs

• Rust crate v0.5 released.

• Continuing integration work.

• Preparing for broader deployment.

MASQUE

• Phase 3 design in progress.

• Positive early feedback from VPN team.

• Work continues alongside HE improvements.

Speculation Rules API

• Project plan created.

• Work split across:

  • DOM / Necko / DevTools / Performance

• Initial work:

  • Prefetch-related bugs

Performance & Quality

• Focus areas:

  • Slow start experimentation reliability

  • API enablement stability

  • Networking architecture improvements

• Ongoing:

  • Performance tooling integration

  • CI expansion (upload/download testing)

WebCompat

Needs attention:

• https://bugzilla.mozilla.org/show_bug.cgi?id=2027641

• https://bugzilla.mozilla.org/show_bug.cgi?id=2022833

• https://bugzilla.mozilla.org/show_bug.cgi?id=2024332

• https://bugzilla.mozilla.org/show_bug.cgi?id=2012345

Guidance:

• Investigate and file component bugs.

• Avoid moving bugs directly.

• Remove PII before sharing logs.

Decisions & Alignment

• Explore (but not commit to) networking-in-content-process architecture.

• Prioritize:

  • Telemetry cleanup

• Maintain focus on:

  • Landing PP1/PP2 bugs before deadline

  • Roadmap planning alignment

Action Items

• Greg

  • Create Google Doc for networking-process discussion.

  • Clarify Ubuntu requirements with IT.

  • Add roadmap topics for planning session.

• Valentin

  • Review and document telemetry probes.

• Randell

  • Complete Linux upgrade.

• Sunil

  • Upgrade machine to Ubuntu LTS.

  • Continue speculation rules + LNA work.

• Oskar

  • Follow up on slow start / SEARCH discussions.

• All

  • Review telemetry probes and cleanup candidates.

  • Update tracking systems and action items.

  • Investigate WebCompat backlog.