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| =Performance=
| | #REDIRECT [[Performance]] |
| Mozilla's performance program focuses on improvements to the Gecko platform and the Firefox Desktop and Firefox for Android products.
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| ==Projects==
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| ===Active===
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| ====<span style="color: green">Incremental Cycle Collection (CC)</span>====
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| {| border="0" width="100%" align="left"
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| |-
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| ! width="120px" | Product impact
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| |{{desktop}} {{mobile}} {{b2g}}
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| |-
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| ! Team
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| | Andrew McCreight (lead)
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| |-
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| ! Duration
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| | TBD
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| |-
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| ! style="vertical-align: top;" |Goal
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| | Implement incremental cycle collection to reduce<sup>1</sup> cycle collector pauses in the Firefox UI.
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| <sup>1</sup><span style="font-size: 80%;">Reduction in cycle collector pauses will be measured with the [http://mzl.la/XLsAoB CYCLE_COLLECTOR_FULL Telemetry probe]. The degree of reduction that can be achieved is currently unclear.</span>
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| |-
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| ! Progress reports
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| | TeamStatus: [http://teamstat.us/#show/irc.mozilla.org/perf/mccr8 Andrew McCreight]
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| |-
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| ! Work
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| | {{bug|850065}}
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| |-
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| |}
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| ----
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| ====<span style="color: green">Profiler Backend for Mobile</span>====
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| {| border="0" width="100%" align="left"
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| |-
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| ! width="120px" | Product impact
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| |{{mobile}} {{b2g}}
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| |-
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| ! Team
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| | Julian Seward (lead), Benoit Girard, Mike Hommey
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| |-
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| ! Duration
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| | TBD
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| |-
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| ! style="vertical-align: top;" |Goal
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| | Accurate<sup>1</sup>, crash-free, deadlock-free, low overhead<sup>2</sup> stack unwinding for the SPS profiler for Firefox for Android and Firefox OS.
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| <sup>[1]</sup><span style="font-size: 80%;">The correct sequence of code return addresses on the stack, ideally without the unwind terminating before it gets back to main().</span><br/>
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| <sup>[2]</sup><span style="font-size: 80%;">Average unwind cost of 500 microseconds for a 30-frame backtrace on one core of a 1 GHz Cortex A9</span
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| |-
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| ! Progress reports
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| | [https://blog.mozilla.org/jseward Julian Seward's blog], TeamStatus: [http://teamstat.us/#show/irc.mozilla.org/perf/sewardj Julian Seward], [http://teamstat.us/#show/irc.mozilla.org/perf/BenWa Benoit Girard], [http://teamstat.us/#show/irc.mozilla.org/perf/glandium Mike Hommey]
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| |-
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| ! Work
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| |-
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| |}
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| ----
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| *Tab Animation: Avi, Tim
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| *Responsiveness Gecko: Vlad
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| *Startup: Vlad, Aaron
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| *Make workers good: David Teller, Paolo
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| *Addons: Irving
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| *Talos: Nathan, Avi
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| ===On Hold===
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| ====<span style="color: green">Shutdown</span>====
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| {| border="0" width="100%" align="left"
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| |-
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| ! width="120px" | Product impact
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| |{{desktop}}
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| |-
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| ! Team
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| | Benoit Girard (lead)
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| |-
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| ! Duration
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| | TBD
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| |-
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| ! style="vertical-align: top;" |Goal
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| | Ensure 95% of Firefox desktop instances shutdown in 3 seconds or less.
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| |-
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| ! Progress reports
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| | [http://benoitgirard.wordpress.com Benoit Girard's blog], TeamStatus: [http://teamstat.us/#show/irc.mozilla.org/perf/BenWa Benoit Girard]
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| |-
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| ! Work
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| | {{bug|819063}}
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| |- style="color:red"
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| ! Hold reason
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| | Resource availability
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| |-
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| |}
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| ----
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| ===Proposals===
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| *Font chromehangs: daggett???
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| *Non-e10s Plugin Hangs:
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| ==Tools==
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| *[[Telemetry|Telemetry]]
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| * [https://github.com/mozilla/jydoop jydoop: Efficient and Testable hadoop map-reduce in Python] ([http://benjamin.smedbergs.us/blog/2013-04-09/introducing-jydoop-fast-and-sane-map-reduce/ Introduction from Benjamin Smedberg])
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| * [https://developer.mozilla.org/en-US/docs/Performance/Profiling_with_the_Built-in_Profiler SPS Profiler]
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| * [[Buildbot/Talos]]
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| ==Communication==
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| {| class="wikitable fullwidth-table"
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| ! Communication Type !! Mechanism !! Audience
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| |-
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| | Announcements || [https://lists.mozilla.org/listinfo/dev-platform dev-platform] list || all
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| |-
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| | Meetings || meeting time
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| {{conf|99355}}
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| * Vidyo: Performance
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| * IRC: [irc://irc.mozilla.org/ircchannel #ircchannel]
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| * Agenda:
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| || all
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| |-
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| | Meeting summaries || [[Performance | this wiki]] || all
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| |-
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| | Micro status || [http://teamstat.us/#browse/irc.mozilla.org/perf statusbot] || devs
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| |-
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| | Weekly status || [http://benjamin.smedbergs.us/weekly-updates.fcgi/ Mozilla Status Board] || devs
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| |}
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| ===Press & Blog Posts===
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| ===Minutes and Progress Reports ===
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| {| class="wikitable collapsible" style="width: 100%"
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| ! style="background-color: rgb(221, 221, 221);" colspan="2" | 2013
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| |-
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| * minutes go here
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| |}
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| ==People==
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| list required competencies for people and, once defined, the people working on project. note that not all of these competencies will be required for every project
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| {| class="wikitable fullwidth-table"
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| | Project Champion ||
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| |-
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| | Program Management || Lawrence Mandel
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| |-
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| | Product ||
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| |-
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| | Engineering || Taras Glek, Vladan Djeric
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| |-
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| |}
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| ==References==
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| ===Related Projects===
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| * [[Performance/MemShrink|MemShrink]]
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| ==Archive==
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| ===Old Projects===
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| * [[Firefox/Projects/Mobile_Startup_Shrink|Mobile Startup Shrink]]
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| * [[Firefox/Projects/Startup_Time_Improvements|Startup Performance]]
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| * [[Firefox:FrontEndPerformance|Front-end Performance]] (i.e., responsiveness)
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| * [[Performance/Addons|Add-on Performance]]
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| * [[Performance/Snappy|Snappy]]
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| * [[Mobile/Performance|Mobile Performance Info]]
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| ===Tools===
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| * [[Codesighs]] - a tool which analyzes code and data size.
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| * [[Performance:Tools]]. For measuring performance. Tip o' the propeller-cap to [mailto:zuperdee@penguinpowered.com Daniel Roberts] (zuperdee@penguinpowered.com) for the pointers.
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| * [[Performance:Probes]]. Project to integrate a system of performance probes into Gecko.
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| ===Documentation and Presentations===
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| * Code Footprint [[Performance:Footprint_Reduction_Techniques]] explains common bad patterns and how to correct them.
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| * [[Performance:Profiling_JuJu]]. Things you should know about doing profiling. Tips and tricks for some of the tools, and lots of other Good Things To Know.
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| * [http://www.mozilla.org/performance/mac-performance.html Profiling and leak analysis] on the Mac.
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| * [[Performance:Footprint_Tools]]. Presentation on footprint tools
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| * [[Performance:Startup]] [http://www.mozilla.org/performance/perf-intro/slide1.xml slides] Presentation on general performance tools
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| * [[Performance:Leak_Tools]]. Presentation on memory leaks detection tools
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| * [http://www.mozilla.org/performance/mac-performance.html Mac Performance Tools] Presentation on performance tools that work on Mac
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