293689 - High CPU usage

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[John Bird]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.7) Gecko/20050414 Firefox/1.0.3

Similar to ID 288472 (MAC) - Firefox open a few hours, opened and closed a few 
tabs, Firefox looks to be idle (not loading any pages) but CPU usage high and 
stays stable - sometimes 55%, 65%, sometimes 95%.  Always Firefox is the 
offending process.  Closing Firefox and reopening the same pages again cures 
the problem.  Has happened since version 1.0.0 - had the problem probably 10-
15 times.

No unusual web sites - Yahoo mail, tucows and links from Tucows in the last 
case.  Yahoo mail is often open when this happens - dunno if this is 
coincidence.

Have a nice screen shot showing this with Firefox idle and systinternals and 
taskmanager both showing the high CPU.

WIndows XP SP2 Sony Vaio laptop (Athlon processor).

Reproducible: Sometimes

Actual Results:  
Firefox idle, but CPU usuage steady on a high value - eg 55% to 95%.

Expected Results:  
If firefox shows it is not loading a page, CPU usage should be around 0-5%

I have screen shots showing this in more detail if you would like.

Comment 1

[William Bumgarner [:zsinj]]

60 days inactive: INVALID in 72 hours.

Is this reproducable with a nightly build (http://www.mozilla.org/developer)?

Comment 2

[William Bumgarner [:zsinj]]

Exerpt from email:

I was having this problem consistently with Firefox until a couple of weeks
ago...current update of 1.0.4 seems OK so far....  Symptom was after a
couple of days of Firefox open, and opening and closing lots of tabs (15/20)
it would start to eat lots of CPU while doing nothing - ie no pages loading
or refreshing.

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