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2017-08-24

NECKO WEEKLY MEETING NOTES

Thurs August 24th, 2017

STICKY

  • Triage duty: nwgh
  • new untriaged bugs: https://tinyurl.com/zhk9yjf
  • NECKO-ACTIVE bugs: https://tinyurl.com/j8pj35u
  • NECKO NEXT bugs: https://tinyurl.com/zjwjfee
  • NECKO-BACKLOG bugs: https://tinyurl.com/hpkcxx3
  • Triage Notes
    • Android crashes on infra are currently not symbolicated: https://bugzilla.mozilla.org/show_bug.cgi?id=1389805 (makes triaging/diagnosing android crash bugs hard/impossible)

Round Table:

—PROJECT UPDATES— - rust-url meeting notes: https://public.etherpad-mozilla.org/p/mozloha-rust-url - rcwn https://public.etherpad-mozilla.org/p/mozaloha-rcwn

Nick

Honza

Michal

  • 1382688 Do not allow to enable old disk cache backend
  • 1392841 Enable RCWN on Nightly

Patrick

last week: mpendingq, 256fd telemetry, 0.9 telemetry, namespaces, neat tls, alt-svc, immutable bug, some non-necko stuff this week: neat tls, alt-svc, immutable bug, some non-necko stuff. more reviews.

Daniel

  • NEAT project work
  • IPv6 network identification

Valentin

Bug 1369317 - Optimized data URI parsing by ~20% [landed]

Bug 1306646 - Match updated Timing-Allow-Origin definition. [landed]

Bug 919391 - Incorrect Navigation Timing API: performance.timing.responseStart - performance.timing.requestStart <0 [landed]

Bug 1392260 - resource-timing - Fix error in gzip_xml.py [landed]

working on:

threadsafe URIs

other resource-timing bugs

Dragana

TFO

rel=preload and no-cache

JAR

gmail issue - Bug 1389772 (reports in bug 1380896 gmail is slow or stops responding)

Bug 1391543 - Network stops occasionally during “Performing a TLS handshake to…”

Gary

Bug 1373708 - Convert Jar channels to stop using main thread I/O

  • test_bug364677.html checks feedHandler (defined in subscribe.xhtml) before it is being loaded.

Junior

Bug 870460 - Lazy load of cookie service blocks main thread while cookie database loads

  • feedback granted, functional work, fixing treeherder

Amy

Bug 1376009 - Crash in mozalloc_abort | NS_DebugBreak | mozilla::ipc::LogicError | mozilla::net::PCookieServiceChild::SendGetCookieString

  • Landed Measured the performance analysis

  • Used a sikuli to test cnn.com on Nightly.

  • Found the function which is used to get cookies string on Chromium.

  • Wrote a testing webpage which used native getter and setter to replace document.cookie.

  • Nightly

  • Version: 57.0a1

  • Average Set Cookie Time: 33.75ms

  • Average Get Cookies Time:0.64ms

  • Max Get Cookies Time:1ms

  • Total Get Cookies Time:3.354ms

  • Chrome

  • Version: 60.0.3112.101

  • Average Set Cookie Time: 5.16ms

  • Average Get Cookies Time:0.51ms

  • Max Get Cookies Time:0.73ms

  • Total Get Cookies Time:2.658ms

Kershaw

CDP Test

  • Create a web site to present test results
  • http://10.247.28.241:8888/

Bug 1385576 - Tracking Protection broken in Nightly.

  • investigating

Bug 1388247 - Label PCookieServiceChild

  • working

SC

[PBg-Http]

  • performance analysis
    • find out why window.onload / DOMContentLoaded event is delayed after PBg-Http is enabled
    • StopRequestEvent is delayed because tasks generated by HTML parser is queued on main thread earlier, causing a long
    • detailed report: https://docs.google.com/a/mozilla.com/presentation/d/1H4F5Ac3PPnJmzGlbkXyFIvdeI8iEtef9SMrCiYwYAWg/edit?usp=sharing
    • experimenting the performance difference between different configuration (4*3 experiments)
    • ODA retargeting ( all on / all off / off for HTML parser )
    • PBg IPC ( all on / all off / disable for HTML parser / enable for image )
    • the best configuration for TALOS is to only turn off PBg-IPC for loading main HTML document.
    • this configuration will fix the sessionrestore_many_window performance regression.
    • facebook performance difference is reduced from 30-50 to 15 ms (first paint time)
    • perfherder link: https://treeherder.mozilla.org/perf.html#/compare?originalProject=try&originalRevision=fd6dceb87671ff98461f935a0be00678f017264b&newProject=try&newRevision=ead7b792855462e3843cf7f175d9bf157a2f3dfd&framework=1&showOnlyImportant=0&showOnlyConfident=1
    • need to get gecko profiler info for analysis the facebook performance regression
  • trying to get CC/GC log from treeherder for investigating bug 1353829 (awsy regression - image memory usage increased), but failed