248743 - CPU being used to render gif animations even if window is minimized or looking at a different tab

Status: RESOLVED DUPLICATE of bug 204002

(Firefox :: General, defect)

Description

[Eric K]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040615 Firefox/0.9
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040615 Firefox/0.9

Whenever there are animated gifs on a page and you minimize the window or switch
tabs, the cpu is still using up cycles to render the animation.

Reproducible: Always
Steps to Reproduce:
1.  Visit a page with gif animations
2.  Minimize window or switch tabs to a window with no animations
3.  Run some form of process viewing application

Actual Results:  
Firefox-bin was using between 2-6 % of the cpu (for small gifs) and up to 80%
for large gifs.

Expected Results:  
Stopped rendering the gifs' animation

Comment 1

[OstGote!]

Dupe of Bug 120154? (see bug 204002 comment 3)

Comment 2

[Eric K]

(In reply to comment #1)
> Dupe of Bug 120154? (see bug 204002 comment 3)

No that one was for Mozilla.  This one is for Firefox.

Comment 3

[OstGote!]

(In reply to comment #2)
> (In reply to comment #1)
> > Dupe of Bug 120154? (see bug 204002 comment 3)
> 
> No that one was for Mozilla.  This one is for Firefox.

I know. Bug 204002 is a FF bug duped against the general Browser bug 120154.
Why? I guess because this rendering is done in the shared code (almost only the
GUI is different). So IMO this is not FF specific. Mozilla and FF have the same
behavior on this. 

Comment 4

[Robin Monks]

I have duped to Bug 204002 as it does contain more information, even tho it has
since been duped.  Reporter, If you feel this is incorrect, please, feel free to
reopen this bug.

-Robin

*** This bug has been marked as a duplicate of 204002 ***