562108 - FireFox using alot of memory

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[sales]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)

Firefox is using a lot of memory since upgrading to latest version.

Currently using 485000KB of memory, when I have about 10 different Tabs open.

Reproducible: Always

Steps to Reproduce:
1. Open multiple Tabs
2.
3.
Actual Results:  
Firefox is using a lot of memory

Expected Results:  
Not use as much memory

Firefox runs very slow.

Comment 1

[Matthias Versen [:Matti]]

URLs ?
Do you already tried http://support.mozilla.com/en-US/kb/Safe+Mode because such things are often caused by addons.

Comment 2

[agrzesiczak]

got same problem on Version - 3.6.8

Basically Firefox is not releasing memory from closed tabs I think and after not restarting Firefox for few days I got memory usage to 800MB or more [max was 1.5GB] this is because I'm opening lot of web pages in new tabs to read later but when I close them Memory usage is still high.

Tested on Windows XP and Windows 7 both with addons and without.

Can do some more testing and send screen shots as I'm heavy Firefox user ;]

Comment 3

[Ed Sanford]

Happens on macs too

Comment 4

[Srinivas]

Mozilla/5.0 (Windows NT 5.1; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

Opened about 70 tabs, firefox occupied about 450mb of ram.
Then closing tabs one by one firefox kept on releasing the memory slowly
Checked with Firefox 3.6.12

Comment 5

[Tyler Downer [He/Him]]

Reporter, does this still happen with Firefox 3.6.13 or later, the latest plugins (etc. flash, java, adobe reader 10, etc) and a fresh profile?
http://support.mozilla.com/en-US/kb/Managing%20profiles

Comment 6

[langet]

I use "Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.18) Gecko/20110614 Firefox/3.6.18" with latest flash-plugin.

When I used a gamesite made in flash and other sites, the used memory sometimes rises above 1GB. Even when the site is closed, FF don't release the memory.
When I close FF it takes about 5-10 minutes until FF is removed from memory.
Only in the last seconds FF releases the memory down to 151MB and quit.

Comment 7

[langet]

Attachment: Last 9 minutes after closing FF

Comment 8

[Tyler Downer [He/Him]]

Langet, can you please update to Firefox 5 or later. If you still see the issue, then please create a fresh profile and test there. If you still see the issue with a fresh profile , create a new bug report.

Comment 9

[Wayne Mery (:wsmwk)]

Srinivas ?

(In reply to Tyler Downer [Triage] (away) from comment #5)
> Reporter, does this still happen with Firefox 3.6.13 or later[like version 7], the latest
> plugins (etc. flash, java, adobe reader 10, etc) and a fresh profile?
> http://support.mozilla.com/en-US/kb/Managing%20profiles