698134 - js video demo slower in firefox than in chrome

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[(dormant account)]

http://devongovett.github.com/Broadway/Demo/broadway.html#2

Running latest nightly vs latest chrome release:
In firefox I get 7-8fps with d2d on. < 1frame with d2d off. Chrome gets 8-15fps. This is an i7 macbook air

Comment 1

[Jeff Muizelaar [:jrmuizel]]

(In reply to Taras Glek (:taras) from comment #0)
> http://devongovett.github.com/Broadway/Demo/broadway.html#2
> 
> Running latest nightly vs latest chrome release:
> In firefox I get 7-8fps with d2d on. < 1frame with d2d off. Chrome gets
> 8-15fps. This is an i7 macbook air

Isn't this a js problem?

Comment 2

[(dormant account)]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #1)
> (In reply to Taras Glek (:taras) from comment #0)
> > http://devongovett.github.com/Broadway/Demo/broadway.html#2
> > 
> > Running latest nightly vs latest chrome release:
> > In firefox I get 7-8fps with d2d on. < 1frame with d2d off. Chrome gets
> > 8-15fps. This is an i7 macbook air
> 
> Isn't this a js problem?

Turning off d2d caps my speed at <1frame/second. Given the large variation, it seemed like gfx might be the bottleneck.

Comment 3

[Boris Zbarsky [:bzbarsky]]

This might depend on the system... I'm seeing 90+% of the time spent in JS, but I'm on Mac.

Taras, how do things look for you if you disable hardware acceleration altogether?

Comment 4

[(dormant account)]

Turned out i was in the power saving power profile. In the normal profile, firefox is 20-35(!!!)fps vs 15-20fps for chrome