*Chrome Jank Task Force Status Update*
The UI Jank task force is focused on improving UI 'jankiness'/slowness
throughout the browser. These are status updates of team members working on
the task force.
*
*
* Current Status*
Chase
- Working on reference build (hasn't been updated in ~7 months) to get
our tab switching tests rolling.
- Mozilla using "Consume" tool to load down a system? May want to
investigate using the same tool.
Carlos
- Gardening on Jank bots.
John
- ImageUnloadHandler work, passing along the work to Nate.
- Found that thread 'jumping' could possibly lead to deadlocks w/ UI
thread; investigating.
- Investigating moving spellchecking to file thread
- Evan to move spellchecking to renderer process (estimate: this
quarter)
Evan
- Fixing Chrome 4 bugs.
- Tackling moving spellchecking to renderer this quarter.
Tony
- Fixing Chrome 4 bugs / Webkit merges.
- Wrote change to delete unused themes on shutdown.
- Slows down shutdown but speeds up startup (+/- 500ms?)
- Maybe delete the themes as soon as 'undo' bar goes away?
- Need to eliminate shutdown slowdown (John filed a bug on this)
Peter
- Added more plumbing into memory purger (probably can't purge web
database based on architecture & SQLite)
- Still not plumbed but need
investigation: Appcache, Database, Safebrowsing (probably?)
- Would probably only purge the bloom filter -- may be expensive to
rebuild.
- Safebrowsing seems to be hitting the HD pretty hard on wake, not clear
why this is happening. (bug filed on this)
- "Renderer is slow after waking up" -> affected by safebrowsing?
- Do we vacuum the SB SQLite database? (data indicates it may not make a
big difference)
- Maybe add histograms for whiteout duration / etc. with SB on or off --
may already have this data and we just need to correlate.
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