Firefox 4 becoming slow after few hours of use




7 years ago
6 years ago


(Reporter: Mark Dekker, Unassigned)


4.0 Branch
Windows 7

Firefox Tracking Flags

(Not tracked)


(Whiteboard: [bugday-20110401], URL)


(1 attachment)



7 years ago
User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.2a1pre) Gecko/20110330 Firefox/4.2a1pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.2a1pre) Gecko/20110330 Firefox/4.2a1pre

Firefox becomes very slow after 2 hours of work, loading pages come to a near halt and only continues after you move your mouse.

Reproducible: Always

Steps to Reproduce:
1.have around 5 tabs open
2.upload pics, download pics, post here and there, have your webmails open and close tabs according to your browser needs
Actual Results:  
after a couple of hours, Firefox becomes slower, every page you open take a long time to load, only if you move your mouse it opens right away

Expected Results:  
it should have been stable and open everything right away instead of when i move my mouse

Comment 1

7 years ago
Does the issue occur in Safe Mode?

How about with a new profile?
Version: unspecified → 4.0 Branch
Whiteboard: [bugday-20110401]

Comment 2

7 years ago
This happens also in safe mode, new profile doesn't seem to make any difference

Comment 3

7 years ago
Please post the contents from about:memory next time you experience the slowness.

Comment 4

7 years ago
Mark -> Any update? Were you able to get the contents from about:memory?

Comment 5

7 years ago
It is so slow now, i cannot press anything, so i am posting this with IE9 :-(

  Memory Usage


Memory mapped: 	166,723,584
Memory in use: 	139,318,218

    Other Information

Description 	Value
malloc/allocated	139,321,266
malloc/mapped	166,723,584
malloc/committed	148,361,216
malloc/dirty	2,711,552
win32/privatebytes	189,366,272
win32/workingset	211,521,536
js/gc-heap	32,505,856
js/string-data	6,702,468
js/mjit-code	8,501,512
storage/sqlite/pagecache	4,132,208
storage/sqlite/other	956,544
gfx/d2d/surfacecache	0
gfx/d2d/surfacevram	0
gfx/surface/win32	17,165,726
images/chrome/used/raw	0
images/chrome/used/uncompressed	162,296
images/chrome/unused/raw	0
images/chrome/unused/uncompressed	0
images/content/used/raw	1,624,118
images/content/used/uncompressed	16,108,006
images/content/unused/raw	24,177
images/content/unused/uncompressed	195,969
layout/all	5,109,989
layout/bidi	886
gfx/surface/image	5,520
shmem/allocated	806,912
shmem/mapped	806,912
content/canvas/2d_pixel_bytes	707,820

Comment 6

7 years ago
Tim -> Any update on this ? It seems that more and more people experience this problem, shutting down add-ons or plugins or safe mode doesn't seem to help, update the video card drivers is not helping.
I am experiencing it right now, but i am still confused what's causing it.

Comment 7

7 years ago
Please paste the contents of about:support to a txt file and upload using the 'add an attachment' link above

Comment 8

7 years ago
A very loosely related BR where moving the Mouse affects the Browser is demonstrated in Bug 661717 it is accompanied by low Memory.

Comment 9

7 years ago
Created attachment 542751 [details]
about:config file

I am currently using Firefox 5.0 and this problem started when i uploaded some mp3's and m4a's with 2 different webmail it might has something to do with this.
Also i found out that the browser loads when i press buttons on my keyboard, but when i do not touch them it stops loading.
Here is a quick movie that i made that shows the problem.

Comment 10

6 years ago
Mark -> Are you still having issues with Firefox 11?

Comment 11

6 years ago
Tim -> no i haven't had the problem for quite awhile, so i think it is has been fixed...

Comment 12

6 years ago
Thanks for the update Mark!
Last Resolved: 6 years ago
Resolution: --- → WORKSFORME
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