Confirm
356
edits
Changes
Added Snappy updates
===Snappy [Bi-Weekly]===
* Feb 21 [[Performance/Snappy/2013-02-21|Minutes]]
;Startup & Shutdown
* {{bug|810454}}: Read-ahead entire sqlite cookie DB on DB connection open
** Experiments show 50% faster DB open time for a larger cookie DB (1.5MB)
** 87% regression for smaller cookies DB (512KB), but small in absolute terms. See bug for data & details.
** Plan to do a Telemetry trial to verify benefit in the field
** Pre-loading LocalStorage DB {{bug|842777}} and Flash shared library {{bug|836488}}
;Tab Strip
* {{bug|828097}}: We now have Telemetry for Tab animation smoothness
** Tab animation intervals are good when opening a blank page, not very good when newtab preview is enabled (regardless of browser.newtab.preload), especially on slow systems.
** Telemetry: http://goo.gl/LHjTZ
* {{bug|838758}}: Gradient cache keys were too precise. Avi landed a patch to key the gradient cache on gradient stops instead.
** This patch eliminates big memory spikes on some systems (HD4000) - {{bug|837542}}
** D2D speedup 20-25% for tab animation.
* {{bug|837885}}: We're working with fx-team (MattN, mconley) on Australis performance
** Benchmarks: http://goo.gl/TOXLe
** Now at about 15-20% regression from default theme on slow systems
* Timer interval irregularities hurt animation smoothness:
** {{bug|842967}} - timer may retarget the same timestamp
** {{bug|590422}} - remove timer compensation/smoother
;Content
* {{bug|842852}}: Improve LocalStorage performance by check-pointing the WAL log more frequently + preventing latch-up of reader and writer threads.
;Hangs
* {{bug|825588}}: Paolo landed the skeleton for a new downloads API. Iterating on features and will eventually port over callers
* {{bug|789348}}, {{bug|820834}}: Marco working on removing uses of LocalStorage from about:home
;Add-ons
* {{bug|810149}}: Addon Manager recursively scans unpacked addon directories for changes on startup. We would like to only check extension install manifests
** However, we're seeing very high number of Telemetry reports of unpacked addons getting updated without any changes to their install.rdf.
** If you see "addonManager: {"modifiedExceptInstallRdf": n > 0, ...}" in your about:telemetry's "Simple Measurements" section after starting Firefox, please contact Irving or Vladan.
;Tools
* We'll soon begin receiving reports of any Firefox late-writes (part of making shutdown faster)
;Other
* {{bug|840651}}: Telemetry ping storm from a few machines, idle-dily firing too much?
===Metro [1st Tuesday of each month]===
