944989 - Leaving a tab open for extended causes high cpu usage

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[daf]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131125215016

Steps to reproduce:

open several tabs including the page http://gamemakerblog.com/2013/11/25/gamemaker-studio-standard-edition-is-currently-free-50-value/ on a background tab and leave the browser open overnight.


Actual results:

When i returned firefox cpu usage was 97% according to OSX activity monitor and was slow and unresponsive until closing the above tab.


Expected results:

Firefox should have used little to no cpu wile idleling overnight and not require closing the specified tab to become usable again.

Comment 1

[Liz Henry (:lizzard)]

daf, is this still happening? I was unable to replicate it.  

Have you tried the steps here? 

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

Thanks!

Comment 2

[Wayne Mery (:wsmwk)]

If you still see this with a current version please see comment 1

Comment 3

[daf]

(In reply to Liz Henry :lizzard from comment #1)
> daf, is this still happening? I was unable to replicate it.  
> 
> Have you tried the steps here? 
> 
> https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-
> fix
> 
> Thanks!

I have since then moved away from OSX and Firefox so I'm no longer able to do any testing on this bug.