493370 - latest update causes cpu overload by more as 100 %

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[[e-mail]]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.10) Gecko/2009042315 Firefox/3.0.10
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.10) Gecko/2009042315 Firefox/3.0.10

latest upload causes often cpu overload
cpu use by firefox races up to more as 100%
this while no extensive use is being made of firefox
after quitting with save
and restart cpu load use of fire fox is minimal

Reproducible: Always

Steps to Reproduce:
1.after a while of  firefox inactivity
and no use has been made of firefox the cpu overload by  firefox suddenly happens



Expected Results:  
the software should not have produced an cpu overload of more 100 % after a period of inactivity

if wanted a print screen is available of the activity monitor during  cpu overload

Comment 1

[[e-mail]]

Attachment: firefox-cpu-overload-printscreen-activitymonitor

this is the printscreen of the activity monitor during a cpu overload of more as 100% by firefox during a period of inactivity

Comment 2

[Matthias Versen [:Matti]]

Do you get this in the Firefox safemode ?
http://support.mozilla.com/en-US/kb/Safe+Mode

Comment 3

[Matthias Versen [:Matti]]

via private mail :
"I think that i found the culprit

as even in the safe mode of firefox the cpu started suddenly to run out of control
with  my usual windows open in firefox
i started to switch on and off one by one the windows and I found out that the culprit url
was the home page of myspace

witout the "home" of myspace open firefox had 4,0  cpu use
and
with the "home" of myspace open the cpu use of firefox ran immediately up to allready 84 %

so not having the "home" of myspace open in the background solves this cpu overload problem

and saves temperature of my cpu and my fans do not need to work anymore in overdrive"


I will mark this wfm, pages with many flash applets are using more CPU, that is not unusual.