288379 - Runaway threads get 100% of the CPU

Status: RESOLVED EXPIRED

(SeaMonkey :: General, defect)

Description

[Deyan Bektchiev]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b) Gecko/20050217 MultiZilla/1.8.0.1d
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b) Gecko/20050217 MultiZilla/1.8.0.1d

After running for a while usually one, sometimes more threads get 100% of the
CPU usage although the browser might be in the background, not doing anythig.

I'm running on a dual Xeon with hyperthreading enabled (4 logical CPUs) so
sometimes Mozilla gets 25% (90% of the cases) and sometimes 50% of the total CPU
usage.

Even when this happens I can work and the application is stable, but in order to
free the CPU I need to restart it.

Reproducible: Sometimes

Steps to Reproduce:



Expected Results:  
Normal CPU usage.

Comment 1

[Andrew Schultz]

please try without multizilla

Comment 2

[Deyan Bektchiev]

I uninstalled MultiZilla yesterday and this morning the mozilla process was
getting 25% of the CPU again so Multizilla is not to blame.

Comment 3

[Deyan Bektchiev]

Is there a way on Windows to get a thread dump of the Mozilla process so that
one can see which thread is getting all of that CPU time?

Comment 4

[Andrew Schultz]

does the CPU usage continue if you close everything except 1 window, open a new
window and then close the 1 window that you left open?

Also please try a clean profile (mozilla -profilemanager)

Comment 5

[Deyan Bektchiev]

I had already tried that (closing all windows, then opening a new window and
then closing the previously opened window) and the CPU usage stays high.

I'll try with a new profile later today and see if it helps.

Comment 6

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
are asking for your help in focussing our efforts. If you can still reproduce
this problem in the latest version of the product (see below for how to obtain a
copy) or, for feature requests, if it's not present in the latest version and
you still believe we should implement it, please visit the URL of this bug
(given at the top of this mail) and add a comment to that effect, giving more
reproduction information if you have it.

If it is not a problem any longer, you need take no action. If this bug is not
changed in any way in the next two weeks, it will be automatically resolved.
Thank you for your help in this matter.

The latest beta releases can be obtained from:
Firefox:     http://www.mozilla.org/projects/firefox/
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Comment 7

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.