SUMO Problem Investigation
Looks like increase in negative SUMO reports that I mentioned last time was due to over-counting. There might be some networking regressions, but no general slowdown. Without solid data it’s hard to tell.
In order to provide more context to make SUMO reports more useful to developers we are looking into allowing users to attach their telemetry data: bug 732522.
Work in Progress
There are few exciting landings to report this week, but there is a lot of exciting work going on.
Nick is getting rid of main thread cache locks, bug 723577. Limited initial testing indicates this can significantly improve Firefox responsiveness.
Dietrich is pushing automation changes to how we monitor startup so we can alter our startup sequence to show the main window sooner, bug 715402.
Vlad tweaked chromehang to work on all windows versions and is working on the serverside component with Benjamin, bug 712109.
Dietrich and Andrew are looking into massive CC pauses after resume, bug 639262.
Async livemarks changes landed, bug 613588. Macro is following up to fix any slowdown for livemark users.
Local Storage Discussion
I have some raw data on exactly how slow DOM Local Storage is, I will post it once Xavier has time to yank data properly out of the cluster.