Firefox/Channels/Meetings/2016-03-29

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Channel Meeting Details

• Tuesdays and Thursdays at 10am Pacific Time
• irc.mozilla.org #planning for backchannel

Video/Teleconference Details - NEW

• 650-903-0800 or 650-215-1282 x92 Conf# 99951 (US/INTL)
• 1-800-707-2533 (pin 369) Conf# 99951 (US)
• Vidyo Room: ReleaseCoordination
• Vidyo Guest URL

REMEMBER

These notes are read by people who weren't able to attend the meeting. Please make sure to include links and context so they can be understood.

Attendees

lizzard, sylvestre, Kevin, Milan, Calixte, Kim, philipp, Jlund, ritu, lmandel

Schedule Update

• Updates disabled

• Potential 45.0.2
  • Bug 1257861 - Firefox 45 fails to send Cookie header with XHR post requests done from a web worker when third-party cookies are blocked
  • Bug 1259482 - Product image not changing upon selection in Woocommerce/Wordpress
  • Bug 1258650 - Yahoo finance chart comparison "overlays" not displayed properly

• 46 Beta 6 slightly delayed

Stability

Aurora

crash rate: 2.7 (red) - browser 1.3, content 1.39 big spike in the last few days

Spikes:

• signatures: _chkstk, UnmarkGrayTracer::onChild, js::ObjectGroup::traceChildren, JS::CallbackTracer::onShapeEdge
  • _chkstk: crashes rose from 0 (2016-03-26) to 248 (2016-03-28)
  • for the others: crashes were at 0 (2016-03-25) and rose to respectively 248, 99, 54 (2016-03-28)
  • the crash reason is always EXCEPTION_STACK_OVERFLOW
  • in all the cases, the backtrace is useless (reduced to one element)
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1259699 has been fixed (in Nightly) and we should have better information (signature or backtrace) to fix these issues
    • If the fix is helping, will request uplift to Aurora

Topcrash

• signature: mozilla::SandboxBroker::AddTargetPeer
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1260115
  • #1 in topcrash
  • startup crash
  • rose from 0 (2016-03-24) to 231 (2016-03-28)

Beta

crash rate: 1.33 (red) - browser 1.17 , content 0.16

Topcrashes in beta 5

• Bug 1246108 - Core::Audio/Video:Playback Drained AudioStreams should not be restarted (kinetik) This should land with beta 6

• Bug 1158189 - Core::Networking:HTTP shutdownhang in mozilla::net::nsHttpConnectionMgr::Shutdown()
  • Bug 1259089 - Set a socket nonblocking in sts, just to be sure (dragana) (no fix yet)

• Bug 1255737 - Async shutdown crash with "MediaStreamGraph shutdown: blocking on msg thread"
  • backed out MediaStreamgraph changes. May need help with Places crashes still.

Spikes:

• bug 1158189: rose from 0 (2016-03-24) to 472 (2016-03-28) Shutdown hangs mentioned above in Core::Networking

Release

crash rate: 1.16 (red)

trusteer rapport crashes still in high numbers (responsible for ~6% of all crashes on 45.0.1) - bug 1255026

Spikes:

• bug 1132499 - signature NS_ConvertUTF8toUTF16::NS_ConvertUTF8toUTF16, increase around 50% (from 144 to 201) between 2016-03-23 and 2016-03-28, the bug has been fixed 24 days ago
  • not uplifted to Beta46

Topcrashes

• bug 1259387 - signature js::AutoEnterOOMUnsafeRegion::crash | js::GCHashSetOperations<T>::lookupForAdd, appeared 2016-03-24, right now it's #37 in topcrash
• bug 1260470 - signature OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash | js::gc::StoreBuffer::MonoTypeBuffer<T>::trace, appeared 2016-03-24, right now it's #34 in topcrash
• bug 1258562 - signature dom::MediaSource::Duration, #3 in topcrash and fixed in nightly, aurora and beta
  • Will probably take it in 45.0.2 if we do one

QE

Beta

Perf regression of 10% reported (not yet reproduced?) between 45.0.1 and beta (2) https://bugzilla.mozilla.org/show_bug.cgi?id=1254684

Roundtable

• If relman adds the blocking flag to a bug, please don't remove it. Relman should remove it.

Special Topics

Aurora/Beta Feature Review

• mid-Beta check on what's new page: Asked Winston, Jennifer, and cmore. No what's new page is planned.

• Aurora47
  • Plan to enable VP9 on fast machines
  • Waiting for Mid-aurora sign offs on e10s and APZ.

Post-Mortem (Tues 2wks from GA Release)

• https://public.etherpad-mozilla.org/p/45-0-Post-Mortem