Beware of Firefox TabMix .2 Extension

By Angsuman Chakraborty, Gaea News Network
Tuesday, May 10, 2005

It slowed my Firefox considerably. Whenever I opened a new tab, closed one there would be a delay of 10-12 seconds! It is that bad. Even loading a page at some point stops everything else.

Firefox would frequently consume 95-100% of the CPU and appear to be hung. It almost made me think to go back to IE. The time appeared to be geometrically proportional to the number of opened tabs.

Finally I uninstalled it and things are back to normal. I know of two versions of TabBrowser Extensions. I am hesitant to try them now.

If you are looking for a good Firefox experience then stay away from TabMix .2 Extension.

Update: I am using TabMix Plus 0.2.4 for 15 days now without any problems. If you are looking for TabMix functionality try TabMix Plus.

Filed under: Firefox, Technology, Web

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Discussion

arturs
October 1, 2007: 12:08 pm

hi. i’m trying to get * geek 0.21 for ff 1.5 and i just can’t find it anyone ?


pancho
September 20, 2006: 9:57 am

My CPU usage becomes high when Firefox opens a new window via javascript, and when I first open Firefox. What could be the reason for that?

Here’s my Firefox information:

Last updated: Wed, 20 Sep 2006 15:55:46 GMT
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7
Extensions (enabled: 20, disabled: 0):

* Adblock Filterset.G Updater 0.3.0.4
* Adblock Plus 0.7.1.2
* CustomizeGoogle 0.51
* Download Sort 2.5.5
* Download Statusbar 0.9.4.1
* Fasterfox 1.0.3
* Firefox Google Bookmarks 0.2
* FlashGot 0.5.96.060910
* HideTabBar 0.2.1
* IE Tab 1.1.0.6
* Image Zoom 0.2.6
* InfoLister 0.9e
* MinimizeToTray 0.0.1.2006030906+
* Options Menu 1.1
* PDF Download 0.7.5
* Reel New Media Toolbar 1.0.1.20
* SlimSearch 0.1.6
* Tab Mix Plus 0.3.0.5
* Talkback 1.5.0.7
* Yahoo! Photos Easy Upload Tool 2006.4.26

Themes (6):

* Breeze 1.5.3
* Firefox (default) 2.0
* geek 0.21
* Grafari 1.0.0 [selected]
* Maczilla Graphite 1.01.2
* Simpler Black 0.2

Plugins (11):

* Adobe Acrobat
* Java(TM) 2 Platform Standard Edition 5.0 Update 6
* MetaStream 3 Plugin
* Microsoft® DRM
* Mozilla Default Plug-in
* PCMan’s IE Tab Plug-in for Mozilla/Firefox
* Photodex Presenter Plugin
* RealPlayer Version Plugin
* RealPlayer(tm) G2 LiveConnect-Enabled Plug-In (32-bit)
* Shockwave Flash
* Windows Media Player Plug-in Dynamic Link Library


Jag11
September 30, 2005: 6:27 pm

guys, tabmix gives me a little problem too, since I installed tabmix, I can’t use the Ctrl+Tab (switch tab) feature of fx.

September 18, 2005: 11:56 pm

@nobbsch
I do not use GreaseMonkey anymore after the security scare. I have started using TabMix Plus without any problems and with several tabs open as always.

August 31, 2005: 9:42 pm

I will give it another shot and see what happens :)


nobbsch
August 31, 2005: 2:56 pm

I experienced slowdowns an my fast computer just yesterday. I pinned it down to Grease Monkey…the page loading was fast again as soon as I had uninstalled it…
Maybe the processing overhead for Grease Monkey is too high if you have dozens of tabs open.
Maybe Tabmix just adds that little bit of waiting for you to get annoyed…

Try uninstalling Grease Monkey and see if it changes things…you can always reinstalll it later.
gl
Norbert


kirk
June 11, 2005: 11:01 pm

I use TabMix and 33 other extentions without any problems. I can open any number of tabs without delays or high CPU usage. At one point I remember having problems and did a clean install of Firefox and then extensions. I began with Tabmix as I consider it indispensible and added one at a time to look for problems. It worked for me and could help others.

May 26, 2005: 6:53 pm

@BranStorm
I do use a lot of extensions. However I do not have any performance problems after I removed TabMix .2.

My extensions are:
Dictionary Search
SessionSaver .2
Super DragAndGo
cuneAform
Document Map 0.4
PRGoogleBat
UserAgentSwitcher
GreaseMonkey
ImageZoomer
PermitCookies
Clone Window
SEOpen
ieview
Live HTTP Headers 0.10
ColorZilla 0.82
SpellBound 0.73

Let me know if you find any of the above suspicious.

One thing which came to my mind is whether SessionSaver is interacting with TabMix to degrade the performance.


Branstrom
May 26, 2005: 4:56 pm

Nope, it isn’t. I’m using Tabmix .2 right now and I don’t have that problem anymore. I remember having it earlier on though, but then I removed another extension and the hangups went away. Can’t remember which one however… can you list your extensions here? (there’s an extension called InfoLister that does the job if you have lots of em)

May 25, 2005: 1:48 am

@pinthenet
At this moment I have 33 tabs open in Firefox 1.04. The browser and the machine are running super-fast with 2% CPU usage only. The problem is, without any shade of doubt, with TabMix 0.2 extension.


pinthenet
May 24, 2005: 11:59 pm

How does your machine perform when you have 25-30 separete firefox windows open?

May 19, 2005: 3:10 pm

TabMix is fine with 5-7 tabs. The time increases in
geometric proportion (with low coefficient; in other words more than arithmetic progression) to the number of tabs in use. With 25-30 tabs it becomes very much unusable, peaking the machine to 95% CPU and above for significant periods of time and hangs the machine for a minute or more! The problem increases when you check certain options like switching to the last tab after closing a tab etc.

I have a 1800 Ghz Intel Pentium 4 with 256MB RAM.

May 19, 2005: 1:00 pm

I use TabMix .2 and I don’t have the slowdown or hanging problems. In fact, TabMix is one of the extensions I recommend most!

How fast is your computer? I’m using an Athlon 64 3400+ so maybe it is actually using a lot of CPU power, and I’m just not aware of it. On the other hand, I often have so many tabs open that it takes a while to scroll through them all to find the one I’m looking for. So, if it caused a geometrically proportional slowdown compared to the number of opened tabs, I surely would have seen something.

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