778514 - High CPU use on http://grssam.com/

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Mayank Bansal]

Attachment: support info.txt

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0
Build ID: 20120728030524

Steps to reproduce:

opened the URL : http://waterfoxproject.org/

1. The page has an animation + some effects.
2.Monitor the CPU usage during the animation transition.
3. Monitor the CPU usage during scrolling on the page
4. Monitor CPU use during page idle.


Actual results:

CPU usages for Firefox :

Idle : 6%
animation : 15%
Scrolling : 23%

CPU usages for chrome/Opera

idle : 1%
animation: 2%
scrolling: 4%

Out of a possible 25% ( i have a quad core CPU)
All the animations/scrolling is smooth, so that is not the issue.


Expected results:

Idle and active CPU usage should have been lower. 

Configuration : 
win7 x64
core i3-350M
4GB RAM
ATI 5470M with 12.6 drivers.
Attaching the about:support info.

Cleopatra profile :  
http://people.mozilla.com/~bgirard/cleopatra/?report=2e595de659941a4ad40b78def3f2ed78162f12d6

Comment 1

[Matthias Versen [:Matti]]

I can reproduce the high CPU usage with FF14 but not with Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/17.0 Firefox/17.0 SeaMonkey/2.14a1 (animation: 4%CPU, scrolling:12% on my system)

Comment 2

[Mayank Bansal]

Since waterffox has changed its site, here is a new site with the same issue :

http://grssam.com/

Try scrolling on this site. The CPU usage is almost 100%.

Comment 3

[Mayank Bansal]

This is no longer an issue. The CPU usage on the animation has reduced to almost nil now.

Please close this bug.