1001593 - AnimationBenchmark/svg perf regression in Firefox 30

Status: RESOLVED WORKSFORME

(Core :: SVG, defect)

Description

[Chris Peterson [:cpeterson]]

The following SVG benchmark is 2x slower in Firefox than Chrome and 6x slower in Firefox 30 than Firefox 29:

http://themaninblue.com/experiment/AnimationBenchmark/svg/

* Chrome 34: 40–50 fps
* Firefox 28: 30 fps
* Firefox 29: 30 fps
* Firefox 30: 5 fps
* Firefox 31: 5 fps

I bisected the regression to this pushlog:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=0085a162499f&tochange=8ed8185b72c4

Comment 1

[Chris Peterson [:cpeterson]]

jgilbert: could this regression be related to WEBGL_color_buffer_float bug 843666 or its backout in the regression range? I am testing on OS X.

Comment 3

[Daniel Holbert [:dholbert]]

On Linux, mozregression gives me this range (which is a superset of cpeterson's range in comment 0, so cpeterson's range is more useful):
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=0085a162499f&tochange=ad3b57404218

I get 70-100 FPS pre-regression, and 1-5 FPS post-regression.

Comment 4

[Alice0775 White]

(FYI, For Windows7, I filed Bug 1001845, because the regression range is different from this)

Comment 5

[Kelsey Gilbert [:jgilbert]]

I do not think this regression is related to a WebGL extension.

Comment 6

[Alice0775 White]

I think this was fixed in Beta31.

:cpeterson
Could you try it in latest Beta31.0b5?

Comment 7

[Chris Peterson [:cpeterson]]

I verified that the regression in Firefox 30 has been fixed in Beta 31, Aurora 32, and Nightly 33. Note that Chrome is still 2–3x faster (~80 fps) than Beta 31 with the fix (~30 fps).