3
votes
1answer
46 views

Is there a way to identify the busy (CPU-consuming) tab in Firefox?

Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it. Sometimes I get lucky, but ...
0
votes
2answers
91 views

Firefox bottleneck with lot's of tabs open?

I'm currently using Firefox 28.0 on a windows 7 system on a SSD. Sometimes, when I do some research, I open about 180 + tabs on my machine. This makes firefox super slow, without using the SSD or CPU ...
0
votes
0answers
87 views

Why is Firefox Using 2 Gigabytes of RAM?

I have version 26.0. Firefox uses 2 gigabytes of RAM minimum with only one tab open. I've tried uninstalling add-ons, disabling plug-ins, everything, but nothing helps. What do I do?
0
votes
0answers
29 views

hundred-tab friendly Mozilla w/ no continuous javascript

I often have hundreds of tabs open in many windows in Mozilla, and, after a while, it starts consuming significant amount of CPU for these dormant pages, and each new window and page takes a very long ...
0
votes
1answer
204 views

How to remove speed restrictions while downloading files using a browser ?

I have a 2MB line which support downloads at about 200kbps.When I download files over Internet using Firefox or any other browser, I only get a speed below 20kbps. Is there any way to remove this ...
4
votes
3answers
3k views

Firefox: slow visual performance and high CPU usage

My Firefox(24.0) is currently suffering quite badly in terms of performance, no smooth flow scrolling(smooth scroll enabled), even the page loading favicon is not smooth, CPU usage is high and video ...
1
vote
4answers
591 views

Firefox changing tabs is slow

How can I diagnose the problem behind the delay I get when changing tabs in Firefox? It is up to about 1.5 seconds. To provide some background, I use three monitors and often have three Firefox ...
0
votes
1answer
23 views

Firebug - turn of (deactivate) panels that are not used

I have all firebux panels on right now. There is one javascript application that horibly laggs when all panels are active. So how do I turn panel (HTML, DOM, CSS, Net) off when I don't need one, but I ...
2
votes
0answers
699 views

When tab groups are loaded, Firefox becomes unresponsible for minutes (Unresponsive script)

I have several tab groups (~ 20) in Firefox. I can start the browser without any problems. However, as soon as I … click at the "Group tabs" icon in the toolbar, or right-click on a tab and hover ...
3
votes
2answers
1k views

Firefox 16.0.2 slows everything down in Windows 8

Firefox 16.0.2 (the latest version) was working ok when I installed it, but today the whole system slowed down and only worked intermittently and screens kept losing focus before I could type in ...
2
votes
1answer
482 views

Low YouTube framerate while loading Windows 8 Firefox

I am getting terrible frame rates while trying to stream videos on YouTube, particularly HD and/or fullscreen ones, while using Firefox on Win8. However, once the video is fully buffered there does ...
3
votes
6answers
2k views

Addons which actually make Firefox run faster? [closed]

I would like to know of addons which actually enhance firefox's performance, both intentionally and unintentionally. I find that firefox tends to have major performance issues with certain websites. ...
0
votes
3answers
465 views

Lightweight ad-blocker for firefox [closed]

On a old machine (512 MB RAM) I am currently running ubuntu jaunty and firefox 3.0.15. I tried the ad blocker addon add block plus but it eats lots of RAM (>300 MB). Is high memory load of this ...
1
vote
1answer
324 views

Firefox not using cache?

Some times I have issues with the wireless connection where I live. That issue is irrelevant to this (there are two IT departments managing this thing; there's nothing I can do about it). Most of ...
1
vote
2answers
2k views

Faster two way Boomark/History Sync for Firefox?

I need a fast automatic two-way bookmark & history sync. Firefox sync seems too slow because I might bookmark/visit a URL then within a few mins put desktop to sleep and leave the house; if it ...
0
votes
1answer
54 views

Firefox performance of web pages

I know a thing called firebugs exists but I am looking for any other firefox plugin that gives useful performance information. What I would really like is something that would record my clicks and ...
0
votes
1answer
300 views

Iceweasel 8.0 extremely sluggish in Debian Squeeze

My installation of Iceweasel is extremely sluggish in Debian Squeeze. CPU usage by /usr/bin/Xorg seems to spike when doing very simple things like switching empty tabs, opening new tabs, scrolling. ...
3
votes
1answer
719 views

Why is the firefox so slow over `ssh -XC`?

If I compare Firefox to other browsers like Chrome or Epiphany, Firefox takes ages to load and behaves very slow. Why? I would like to use Firefox instead of others, in order to use my environment, ...
1
vote
1answer
901 views

Does a full cache slow down firefox page loading speed?

On the road i had to use a slow (64kB/s) internet connection with firefox 6. Max. cache size is 250 MB. While i never had problems with full cache on DSL connections and page loading speed, on very ...
0
votes
1answer
39 views

How can I get my Firefox Addons page to display again?

My Firefox has lately been significantly slower than usual. I wanted to see if I could delete an add-on that might be causing the problem but when I click on add-ons, it never shows me the add-on ...
7
votes
5answers
11k views

Why does Firefox cause high-CPU-usage “spikes” every few seconds?

When I start Firefox, I have no problems for a while, but after a couple of days, CPU spikes start to occur. During a spike, Firefox freezes and then stops. Spikes occur every seven to ten seconds, ...
5
votes
1answer
410 views

Profiling add-ons in firefox

One new feature of ie9 I like is that it alerts you to which add-ons are making your browser run slowly. Is there a way to get access to similar information in firefox?
1
vote
1answer
425 views

Why does my Firefox web browser consume CPU around 30-40%?

Why does my firefox web browser consume CPU around 30-40% even when running with just a single or two tabs ? Are the web applications probably using my CPU resources ?
1
vote
1answer
602 views

How to run Firefox jailed without serious performance loss?

My Firefox configuration is tricky: Firefox runs at separate restricted user account which cannot connect to main X server. Firefox uses Xvfb (virtual "headless" X server) as X server. x11vnc is ...
7
votes
2answers
3k views

How to make high performance cluster out of 2 laptops I have at home [duplicate]

Possible Duplicate: Is it possible to combine processing power of 2 computers? Hi, I have 2 laptops at home. Could someone please suggest some free cluster softwares using which I can make ...
7
votes
4answers
8k views

Why is my browser using so much memory?

I've recently had problems with Firefox running very slowly when I have many tabs open; say 20 tabs. My whole system would slow down. I decided to give Google Chrome a try, and it started out fine. ...
0
votes
2answers
366 views

firefox running slowly on redhat linux

I have firefox version 3.6.13 and redhat linux and I've noticed firefox freezes up often, especially when opening new pages. I've seen some things citing javascript heavy sites as the cause of the ...
4
votes
2answers
712 views

Do Firefox Persona slow your computer?

I have noticed that my system has slowed down since i started using Firefox Persona. it is very frustrating to move to next tab. Is it because of the Personas or is my computer to be blamed?
0
votes
2answers
196 views

How can Firefox be sped up / made faster?

I know that there are related questions: how to get firefox to load faster - Windows Vista Increase Firefox Speed? but both are quite specific to me. I'd just like to see a list of good tips for ...
1
vote
3answers
893 views

Firefox 3.6 so slow to start

This issue is present since Firefox v3.6 and now it's 3.6.6 without any changes. When I start Firefox, it takes more than 5 minutes to start and it kills me. I have the same version at home with more ...
6
votes
3answers
417 views

How to investigate why my firefox is so slow?

My Firefox v3.5.2 has loads of extensions (48 total, 33 enabled), also considerable database of visited pages and in general rather old profile. Flash is disabled by NoScript, so this is not an issue. ...
1
vote
2answers
1k views

Will any skin/theme/persona of firefox slow my firefox?

Will any skin/theme/persona of Firefox slow my Firefox, compare to default theme, even little ? is it good to stick with Default Firefox look/theme?
3
votes
2answers
1k views

Firefox x86 (32-bit) vs. Firefox x64 (64-bit)

I'm using Firefox 3.6 (32-bit version) on Windows 7 x64 Home Professional. I wonder whether it is better for me to start using 64-bit version of Firefox or not? Is 64-bit Firefox better in terms of ...
3
votes
1answer
939 views

Firefox “auto-complete” is very slow

Firefox version: 3.6 My places.sqlite is rather big (114MB, after being optimized by SpeedyFox.) If I turn on auto-complete, it may take 1 or 2 seconds for Firefox to accept a newly typed URL. To ...
0
votes
2answers
2k views

How to increase speed of Firefox rendering complex UI over many tabs?

I typically have 8-10 tabs open while working - my local website, mostly programming/poweruser sites like this one, a couple of news sites and 1-2 Youtube videos. Firefox becomes slower (not painful ...
2
votes
2answers
804 views

Extreme network slowdown Due to Windows 7

I was able to get fairly good speeds and steady video/gaming. However, after I upgraded to Windows 7 64-bit, I am now unable to get more than 5% traffic, no matter how hard I push the system. I am on ...
4
votes
3answers
4k views

How to stop Firefox on an SSD from freezing when using the search box or submitting a form?

Firefox usually freezes for about a second whenever I search for something from the toolbar search box, when submitting a form, or when clearing the search box history. I suspect it has something to ...
3
votes
3answers
326 views

Is there Firefox addon to identify performance problems in web applications?

I want a Firefox add-on to know where time is being spent in my Web Application.
14
votes
7answers
16k views

“Task Manager” addon for Firefox?

Are there any addons for Firefox that can replicate the performance monitoring of Task Manager in Windows - seeing memory and CPU used - but for all the tabs in the current Firefox session? I want to ...
4
votes
1answer
2k views

Firefox and Chrome slow on localhost; known fix doesn't work on Windows 7

Firefox and Chrome are known to be slow on localhost when IP6 is enabled. In previous versions of Windows, the simplest fix is to comment out this line from the hosts file, as explained in the answer ...
0
votes
2answers
2k views

Slow GIF animations in Firefox

Anyone experiencign slow GIF animations in Firefox 3.5.3, Mac OSX 10.5.8 ? They tend to slow whole page scrolling, but when viewed as single animations, they run smoothly.
9
votes
4answers
8k views

Does Adblock slow down Firefox?

You might have heard of the Adblock extension that has a massive list of URL filters to block out adverts from most websites. Does this slow down Firefox, considering that for every little image and ...
6
votes
5answers
2k views

Why is Firefox 3.0 so slow in Linux?

I'm running Firefox 3.0.14 32-bit on Ubuntu 9.10 32-bit. It's much slower than in Windows XP on the same machine. Does anyone know why? Also, what's a possible way to improve the performance? ...
6
votes
5answers
2k views

Firefox still working in memory after being closed

I'm about ready to give up on Firefox, because whenever I shut it down, it's still working in the background, and if I leave it up it, then over time it works more and more. My hard drive is really ...
3
votes
5answers
2k views

What is Firefox doing?

If one watches Firefox's CPU consumption, one can see it consuming large amounts of CPU even while it's not being interacted with. On lower-spec computers, this can cause performance problems that ...
1
vote
3answers
264 views

firefox flash drags performance down

I have an old notebook with a hardware profile like this : cpu: Intel Celeron 1.5GHZ ram: 1G os : winxp sp2 browser: firefox 3.5.3 I found when I browse web pages with embeded flash ads or video ...
4
votes
5answers
1k views

Optimized versions of Firefox: are they worth it?

I've seen that some people have compiled themselves so-called "optimized" versions of Firefox, from the official source code. One example of such an optimized build is the "Blazing Fast", from Binary ...
3
votes
1answer
1k views

Why does QuickTime lag in Firefox if I don't put my mouse over it?

This has happened for me as long as I can remember. Since the first version of Firefox, on multiple computers and under different versions of Windows. QuickTime plays fine in IE and Chrome (even ...
27
votes
3answers
1k views

Do disabled Firefox extensions make Firefox slower?

Do disabled Firefox extensions make Firefox slower? I know that extensions make browsing slower, but what about extensions that are disabled and not in use?
4
votes
3answers
470 views

How to determine bottlenecks in Firefox?

I have some problems with Firefox 3.5 opening several tabs at once. It takes some seconds and that really annoys me. I have some addons installed and now I want to determine which is the most braking ...