463585 - Firefox slowly sucks up all available processor power

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[fresnel149]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4

As Firefox runs for longer and longer, it begins picking up more and more processor space, until it chokes out every other process and eventually even itself. It also causes my cooling fan to run nonstop while Firefox is open. Cannot say if it is related to multiple windows/tabs being open, because I always have multiple windows/tabs open.

Reproducible: Always

Steps to Reproduce:
1.Open Firefox
2.Browse assorted web pages
3.Check Activity  monitor
Actual Results:  
Firefox has been open long enough for me to create an account and fill out this much of the bug report form, and it's already climbed to 73.2% of my processing space.

Expected Results:  
It should maintain a low processor use, as no background windows have any operations running.

Comment 1

[Damian Shaw [Quan]]

This can be a problem of extensions or plug-ins (Flash can take up a lot of CPU and lots of web pages are covered in Flash adverts).

This seems more like a support issue than a bugzilla issue. But I would suggest trying Firefox with a new profile or in Firefox safe-mode to see if that fixes the problem:

http://support.mozilla.com/en-US/kb/Managing+profiles
http://support.mozilla.com/en-US/kb/Safe+Mode

Comment 2

[fresnel149]

(In reply to comment #1)
> This can be a problem of extensions or plug-ins (Flash can take up a lot of CPU
> and lots of web pages are covered in Flash adverts).
> 
> This seems more like a support issue than a bugzilla issue. But I would suggest
> trying Firefox with a new profile or in Firefox safe-mode to see if that fixes
> the problem:
> 
> http://support.mozilla.com/en-US/kb/Managing+profiles
> http://support.mozilla.com/en-US/kb/Safe+Mode

The only add-on I have is Adblock Plus, but even if I leave Firefox in the background and don't change anything, it slowly climbs up the processor use table.

Comment 3

[Damian Shaw [Quan]]

Have you tried either of my suggestions? It's really the only way to start diagnosing something like this.

Comment 4

[Tyler Downer [He/Him]]

This is a mass search for bugs which are in the Firefox General component, are
UNCO, have not been changed for 500 days and have an unspecified version. 

Reporter, can you please update to Firefox 3.6.10 or later, create a fresh profile, http://support.mozilla.com/en-US/kb/managing+profiles, and test again. If you still see the issue, please update this bug. If the issue is gone, please set the status to RESOLVED > WORKSFORME.

Comment 5

[Tyler Downer [He/Him]]

No reply from reporter, INCOMPLETE. Please retest with Firefox 3.6.12 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.