894939 - Improve Browser panning and content repainting performance

Status: RESOLVED WORKSFORME

(Firefox OS Graveyard :: Gaia::Browser, defect, P1)

Description

[Chris Lee [:clee]]

User Story:
As a user when I am surfing the web, the Firefox OS browser should feel responsive/snappy and re-paint the screen consistently at 55-60 fps when I pan around a web page.

Benchmark stats to define "responsive/snappy" from the user dragging the content to panning: 
*50ms lag when panning for visual feedback

Acceptance criteria:
*User can consistently pan around web content with a drag to pan lag time of <=50ms
*The browser content repaints at >=55fps

Comment 1

[Chris Lord [:cwiiis]]

Just noted in bug 894954, we need to find a way of automating the testing of this. I think investigation into this can be considered as sprint ready now.

Comment 2

[ffos-browser]

A Pivotal Tracker story has been created for this Bug: http://www.pivotaltracker.com/story/show/55559964

Comment 3

[ffos-browser]

Karen Rudnitski deleted the linked story in Pivotal Tracker

Comment 4

[Mike Lee [:mlee]]

Brad,

Is the Browser taking this one or looking for fxos-perf to pick it up?

Mike

Comment 5

[Chris Lord [:cwiiis]]

(In reply to Mike Lee [:mlee] from comment #4)
> Brad,
> 
> Is the Browser taking this one or looking for fxos-perf to pick it up?
> 
> Mike

We're hoping that the work to enable the tiled layer backend will help here, but it'd be great for someone to look at effectively measuring these numbers.

Comment 6

[Brad Lassey [:blassey] (use needinfo?)]

As Chis said, our tiles work is intending to improve panning perf.

Comment 7

[Mason Chang [Inactive] [:mchang]]

Now that APZC and tiling have landed, is this still a valid bug?

Comment 8

[Chris Lord [:cwiiis]]

Yes, but perhaps it's better tracked by specific bugs now. Panning performance is pretty good on the whole atm, I don't think this bug helps us.

Comment 9

[Mason Chang [Inactive] [:mchang]]

From comment 8, closing this bug for now. Please reopen specific browser bugs if this is an issue.