311242 - When browser is open with several tabs, after some time, it causes 100% CPU utilization

Status: RESOLVED INCOMPLETE

(Firefox :: Tabbed Browser, defect)

Description

[Nati]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

I often discover, usually after several hours, that the computer is very slow.
Using the task manager we see 100% CPU USAGE.
I continues till I shut down Firefox completely.
Usually it happens when Firefox is open with several tabs.

Reproducible: Sometimes

Steps to Reproduce:
1.Open browser with several tabs
2.live it working for severa hours
3.




PC is AMD Athlon 64, 1GB memory
Programs which were running along with Firefox:
NAV 2005
Outlook 2003
Shareaza
Soulseek
Google Desktop 2

Comment 1

[Irwin]

I have exactly the same problem using v 2.0.0.1 in win2k.  My wife reports the same issue on her computer which is also running win2k but with FF 1.5.0.9.

If you let firefox run for a while, CPU usage gradually creeps up to 100%.  By using the 'restart firefox' extension, CPU usage drops to ~0%.

So my workaround is to restart FF every 3-4 hours.

At work I have been running v1.5.0.9 on XP with no similar problem.

Comment 2

[Arthur Cronos]

Running WinXP on a Dell about 1.5 years old, Firefox has run perfectly for a year and more, but in the last few days, will suddenly go into a race condition of some kind, consuming all available CPU. I can close Firefox, but in the Task Manager I can see that 'firefox.exe' process is still running, and still consuming all available cpu.

I can shut the computer down, but it sure takes a long time when firefox.exe is consuming all available cpu.

For me this has happened most after Firefox has been open for some time. Usually I have more than one tab open. But it has also happened when rerunning almost immediately after a close down and reboot.

Bummer.

Comment 3

[william drescher]

Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1

Me too.
Usually when I have multiple FF windows open, each with multiple tabs.
I have 2 GB of RAM so there is ram available (it is not swapping) and 2 cores so the usage goes to 50% + other tasks but is clear when trying to download: the save button never becomes available (when this is not happening, the save button takes less than a second to un-grey.

Comment 4

[Wayne Mery (:wsmwk)]

still see this problem when using FF 3.5 beta (or 3.0?)
 http://www.mozilla.com/en-US/firefox/all-beta.html

Comment 5

[Tyler Downer [He/Him]]

@Reporter, we have not heard back from you in a while, so I am closing this bug as INCOMPLETE. You can reopen this bug if more information becomes available. Some helpful information you can provide us is found at http://quality.mozilla.org/bug-writing-guidelines. You should also use a recent version of Firefox, from http://www.getfirefox.com.