565677 - regular short freezes after multiple opening and closing external windows

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Kimpa Tammas]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

Regular short freezes (1 or 2 s) appears every about 5s after opening and closing some external (popup) windows (about 50 actions). During freezes, the CPU is about 50% loaded (duration is about 1 or 2 seconds). From the Process Explorer software, the performance Graph displays clearly the CPU peaks load. When starting Firefox, private bytes are to 108.8 MB. Then, private bytes reaches 371.3 MB on 440 MB of virtual size.

Reproducible: Always

Steps to Reproduce:
1. Open the browser and go on a web site which opens popup windows with a link.
2. Open et close several popup (about 50 actions).
Actual Results:  
The browser freeze 1 or 2 s regularly every about 5 s.  

Expected Results:  
The browser didn't freeze after multiple opening and closing popup windows.

This issue seems be appeared from the actual version 3.6.3. I used a same web site with the previous version, and I didn't have this issue.

Comment 1

[Kimpa Tammas]

Attachment: Initial process

Comment 2

[Kimpa Tammas]

Attachment: Process after

Comment 3

[Wayne Mery (:wsmwk)]

you need to cite a URL where you see this, or better yet attach a reduced testcase to the bug.

Comment 4

[Kimpa Tammas]

(In reply to comment #3)
> you need to cite a URL where you see this, or better yet attach a reduced
> testcase to the bug.

To reproduce this:
1. Go to the following URL: http://www.toutjavascript.com/reference/reference.php?iref=204 (this is a simple open.window Javasacript test).
2. Click on the link 'Ouverture d'un popup'.
3. Close the opened window.
4. Repeat steps 2 and 3 about 50 times

Comment 5

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.13 or later in safe mode? If not, please close. These links can help you in your testing.
http://support.mozilla.com/kb/Safe+Mode
http://support.mozilla.com/kb/Managing+profiles

You can also try to reproduce in Firefox 4 Beta 8 or later, there are many improvements in the new version, http://www.mozilla.com/en-US/firefox/all-beta.html

Comment 6

[Kimpa Tammas]

Actually, this issue persists with Firefox 3.6.13. I don't have test it with the 4 beta 8 version yet.

Comment 7

[Tyler Downer [He/Him]]

I went to the website you referenced in comment 4, opened the popup about 60-70 times, did not get a single freeze or hang with Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1. Would you mind trying to reproduce with Firefox 4?

Comment 8

[Kimpa Tammas]

This issue is always present with Firefox 4.01.

Comment 9

[Tyler Downer [He/Him]]

This bug was reported using a pre-release version of Firefox 4. Now that Firefox 4.0.1 final has been released, can you please update and retest your bug? A fresh profile would be a good starting place to test, 
http://support.mozilla.com/kb/Managing+profiles. If you continue to see the issue, can you please update this bug with your results?

Filter: firefox4prebugsunco

Comment 10

[Kimpa Tammas]

Attachment: Initial process (4.01 test)

Comment 11

[Kimpa Tammas]

Attachment: Process after (4.01 test)

Comment 12

[Kimpa Tammas]

I made new test with 4.01. The results after test are somewhat different: the slowdown occurs after about 250 popup window opening/closing and regular freezes persist but are not clearly visible on the graph. On the first picture (Initial process 4.01 test) are displayed opening/closing actions. There are about 100 actions within 2 minutes. On the second picture (Process after 4.01 test), this is the process after 250 actions. Only 16 actions have been done ​​in 2 minutes, the slowdown being too important. Private bytes increase meaningfully (133 MB at start, 236 MB after 100 actions, 839 MB after 250 actions).

Comment 13

[Kevin Brosnan [Ex-Mozilla]]

If this is still an issue please obtain a Gecko Profiler output of the problem. Details at https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Profiling_with_the_Built-in_Profiler and I would gladly assist with any questions about getting set up.