1079593 - High CPU usage & memory leak when images were disabled

Status: RESOLVED DUPLICATE of bug 588742

(Firefox :: Untriaged, defect, P1)

Description

[shashi]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0
Build ID: 20140923175406

Steps to reproduce:

There are times you don't want images. Many news papers contain images that are ads, at times inappropriate. So, I decided to stop loading images altogether, firefox used to have an option to disable images but not anymore. I used "Web Developer" plugin to disable images (with load images option). Here is an example page to reproduce the issue after disabling images (i.e. the page loads fine without memory issues if you don't disable images).

http://code.tutsplus.com/tutorials/getting-cozy-with-underscorejs--net-24581

I had this issue forever, almost for about 3 years. Only thing is mostly dangling (I am from india and use a lot of indian news papers esp. eenadu.net). This is the first time I was able to reproduce the bug even after multiple restarts and uninstall/reinstall.



Actual results:

When I open this page without images, CPU usage goes up to 40% and memory usages keeps spiking, fan starts roaring.... I had to kill firefox process from task manager as it won't close by itself.


Expected results:

The behavior was supposed to be same with/without loading images.

Comment 1

[Nickolay_Ponomarev]

The script on the site doesn't work correctly when the images are disabled, as you can see if you use Tools -> Web developer -> Performance. There's not much we can do about it.