Performance/Status Meetings/2007-December-12

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Leaks

Fragmentation

• Smaug's patch for content object in bug 403830 is showing good wins. Awaiting sr.
• JS still showing up really high.
  • Pav is working with the JavaScript Engine developers on this.
• Layout is showing up next as a churning. Could use nsAutoTArray more on stack to avoid heap allocations.

Status on found leak bugs

• Not much new to report

Fixed bugs

• 23 leaks resolved since last week. [1]
  • 6 bugs fixed in past week.
  • Jesse marked some old leak bugs as WFM.

Action Items

• AI:sicking Look into enabling trace-refcount, without the tracing part in nightlies.
• AI:cbarrett Look into OS leaks on Mac.
• AI:dbaron Make assertions fatal on new windows leak box.
• AI:sicking Test leaked handles on windows manually using purify.
• AI:sayrer Run leak buster while looking for trace-malloc leaks.
• AI:sicking to go through and prioritize leak bugs

Perf (speed) discussion

• Perf Bugs for FF3:
  • http://tinyurl.com/yub492

• Txul platform differences according to mac mini machines
  • mac: slowest on 1.8, slower still on 1.9 (30% regression)
  • windows: fastest on 1.8, now in second place (30% regression)
  • linux: middle on 1.8, now fastest on 1.9 (30% improvement)

• massive Ts regression in 2006
  • Related to thread manager landing
  • [AI:vlad] looking for an owner, will talk to Damon

• Firefox front-end perf
  • sayer to put list of tasks on wiki
    • focus on measurements on tabbrowser reduction
    • Performance:FrontEnd
  • dolske will do some profiling work

• Linux talos cycling increases
  • http://people.mozilla.org/~vladimir/misc/linux-talos-iterations.xml
  • [AI:vlad] figure it out.

• JS spinlocks vs. full locks (Crashes in Fx2)
• CSS fastload

• On radar (unowned stuff that people have mentioned have mentioned we should look at at some point)
  • Stuart's page-out/page-in tests?
  • Theme optimization
  • roc's scrollbar issues
  • startup performance (fastload perf, loading libXUL and other files, etc.) (unowned)
  • more work to speed up onSecurityChange, but further work will require SSL work and reducing the number of notifications