274074 - download manager very bad memory leak.

Status: VERIFIED DUPLICATE of bug 273244

(Toolkit :: Downloads API, defect)

Description

[stephen mcleod]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Download and save to disk repeated tiles from this page without closing the
download manager. 
http://www.aginsinn.com/tilesRon.html
A horrific memory leak will consume all memory.
If you close the download manager, the memory is recovered.
If you do not close the download manager, after it gets bad enough, it starts
consuming more and more memory without further downloads.


Reproducible: Always
Steps to Reproduce:
1.  go to http://www.aginsinn.com/tilesRon.html
2.  open task manager so you can see memory allocated
3.  start saving tiles to disk and notice memory usage only goes upwards-- fast!
4.  also firefox processor usage goes to almost 100% even when doing nothing.

Actual Results:  
application and entire machine locked up as virtual paging became continuous. 
was able to control - alt- delete - kill task and after about 5 minutes it
killed firefox.

Expected Results:  
save the file to disk and let go of the memory.  
firefox should not go to 100% of cpu usage and peg there.

Comment 1

[Jo Hermans]

*** This bug has been marked as a duplicate of 273244 ***

Comment 2

[Mike Kowalski]

v