Gaia people,
We are working on a new tool. A timeline.
Screenshot:
http://i.imgur.com/D5i5Ghg.png
It records: reflow, restyle and paint.
To test it you need to use WebIDE in Firefox Nightly,
and have a very recent build on your device. In the
toolbox settings (gear on the right of the devtools),
you need to enable the timeline.
Known issues:
- iframes activity is ignored (bug 1050773)
- rare crashes (bug 1065122)
- some paint operations are duplicated (bug 1065954)
- some markers might be missed (bug 1050773)
Even though it's still in an early stage of development,
the timeline is useful as it is, and you might want to
give it a try, and we would like to get your feedback.
Please file bugs (Firefox > Developer Tools: Timeline).
Next:
- address mentioned issue
- add more data (compositing, requestAnimationFrame, DOM events, ...)
- merge timeline within the performance tab
Relevant bugs:
-
http://bugzil.la/timeline
-
http://bugzil.la/timeline-v1
-- Paul