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Firefox uses all system resources, still slow

Posted

Using FF 19.0 on OSX 10.7.5.

Firefox, with one tab open (Gmail), draws OVER 100% CPU and 800MB+ of RAM. As a result, the CPU runs at over 80 degrees celcius, and the fan runs at max speed.

As much as I love FF, this is simply not acceptable as it uses all available system resources, preventing me from doing any other tasks. I must open Activity Monitor, and force close FF, since it frequently hangs when drawing full system resources and cannot close itself.

This issue has been persistent ever since I started using FF on OSX, around FF 17. However, it has WORSENED at each new release.

I have tried disabling all add-ons/extensions, resetting FF, and re-installing FF, all to no avail.

I will unfortunately have to use Chrome until this is fixed, as it is simply not acceptable, nor practical to have a single Gmail tab using this much resources.

Using FF 19.0 on OSX 10.7.5. Firefox, with one tab open (Gmail), draws OVER 100% CPU and 800MB+ of RAM. As a result, the CPU runs at over 80 degrees celcius, and the fan runs at max speed. As much as I love FF, this is simply not acceptable as it uses all available system resources, preventing me from doing any other tasks. I must open Activity Monitor, and force close FF, since it frequently hangs when drawing full system resources and cannot close itself. This issue has been persistent ever since I started using FF on OSX, around FF 17. However, it has WORSENED at each new release. I have tried disabling all add-ons/extensions, resetting FF, and re-installing FF, all to no avail. I will unfortunately have to use Chrome until this is fixed, as it is simply not acceptable, nor practical to have a single Gmail tab using this much resources.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17

More Information

Application Basics
Name
Firefox
Version
19.0
User Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:19.0) Gecko/20100101 Firefox/19.0
Build Configuration
about:buildconfig
Extensions
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web2pdfextension@web2pdf.adobedotcom
Coupons at Checkout
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DownThemAll!
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{DDC359D1-844A-42a7-9AA1-88A850A938A8}
Easy YouTube Video Downloader
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Media Hint
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mediahint@jetpack
PDF Viewer
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uriloader@pdf.js
Reddit Enhancement Suite
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jid1-xUfzOsOFlzSOXg@jetpack
Social Fixer
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socialfixer@mattkruse.com
Unseen
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unseen@tangrs
URL Advisor
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urladvisor@kaspersky.com
User Agent Switcher
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{e968fc70-8f95-4ab9-9e79-304de2a71ee1}
Virtual Keyboard
13.0.0
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wvkbd@kaspersky.com
YouTube to MP3
1.2.3
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youtube2mp3@mondayx.de
Important Modified Preferences
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Value
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
358400
browser.cache.disk.smart_size_cached_value
358400
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size.use_old_max
false
browser.places.smartBookmarksVersion
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browser.privatebrowsing.dont_prompt_on_enter
true
browser.sessionstore.restore_on_demand
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browser.startup.homepage
about:home
browser.startup.homepage_override.buildID
20130215130331
browser.startup.homepage_override.mstone
19.0
browser.tabs.warnOnClose
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dom.mozApps.used
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extensions.lastAppVersion
19.0
gfx.blacklist.webgl.msaa
4
network.cookie.prefsMigrated
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places.database.lastMaintenance
1360675288
places.history.expiration.transient_current_max_pages
104858
places.history.expiration.transient_optimal_database_size
167772160
plugin.disable_full_page_plugin_for_types
application/pdf
print.macosx.pagesetup-2
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO
privacy.cpd.cache
false
privacy.cpd.cookies
false
privacy.cpd.downloads
false
privacy.cpd.history
false
privacy.cpd.sessions
false
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false
Graphics
Device ID
0x 126
GPU Accelerated Windows
1/1 OpenGL
Vendor ID
0x8086
WebGL Renderer
Intel Inc. -- Intel HD Graphics 3000 OpenGL Engine
AzureCanvasBackend
quartz
AzureContentBackend
none
AzureFallbackCanvasBackend
none
JavaScript
Incremental GC
true
Accessibility
Activated
false
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.4
4.9.4
NSS
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSSMIME
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NSSSSL
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NSSUTIL
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3.14.1.0

cor-el
  • Top 10 Contributor
  • Moderator
12142 solutions 112771 answers

Are there any plugins running in the tabs?

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe mode start window or otherwise make changes.
Are there any plugins running in the tabs? Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance). *Do NOT click the Reset button on the Safe mode start window or otherwise make changes. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes *https://support.mozilla.org/kb/Troubleshooting+plugins

Question owner

In Safe Mode, everything runs fine and I can confirm that add-ons are disabled.

However, as soon as I leave Safe Mode and return to normal, the resource use rapidly climbs.

I have also tried doing a re-install of FF, deleting all Library/preference files and starting from scratch. When doing this, the initial launch of FF runs hitch free, but when the process is closed and restarted, the lag returns.

In Safe Mode, everything runs fine and I can confirm that add-ons are disabled. However, as soon as I leave Safe Mode and return to normal, the resource use rapidly climbs. I have also tried doing a re-install of FF, deleting all Library/preference files and starting from scratch. When doing this, the initial launch of FF runs hitch free, but when the process is closed and restarted, the lag returns.
sfox410 0 solutions 3 answers

Helpful Reply

I have a 4 core AMD A10 notebook, 8GBs of ram running Win 64 bit. * In my case, Firefox 19 uses up between 93% and 97% of CPU resources and it's not even open, it's closed....I've even checked the Windows Task Mgr and made sure the process was not running.

I'll shut down FF19 and be busy with other things and I return sometime later and Firefox.exe32* is maxing out my CPU. I'll open WTM to stop the process (Firefox.exe32*) and sure enough a short while later it's back maxing out my CPU again.

I've tried running Firefox in safe mode....same thing happens, tried uninstalling and reinstalling Firefox, again same result, I've reset the Firefox profile and started from scratch...no change. I've manually disabled all add-ons, extensions and appearance add-ons, still happens.

I've been using repairing and building computers since 1998 and this has me stumped. The strange thing is I also have a desktop running Win7 Pro 64 bit with Firefox 19 and it doesn't happen even with the exact same add-ons. I'm convinced it's something inside Firefox....everything else has pretty much been eliminated. If anyone can get a handle on this it would be greatly appreciated.

I have a 4 core AMD A10 notebook, 8GBs of ram running Win 64 bit. * In my case, Firefox 19 uses up between 93% and 97% of CPU resources and it's not even open, it's closed....I've even checked the Windows Task Mgr and made sure the process was not running. I'll shut down FF19 and be busy with other things and I return sometime later and Firefox.exe32* is maxing out my CPU. I'll open WTM to stop the process (Firefox.exe32*) and sure enough a short while later it's back maxing out my CPU again. I've tried running Firefox in safe mode....same thing happens, tried uninstalling and reinstalling Firefox, again same result, I've reset the Firefox profile and started from scratch...no change. I've manually disabled all add-ons, extensions and appearance add-ons, still happens. I've been using repairing and building computers since 1998 and this has me stumped. The strange thing is I also have a desktop running Win7 Pro 64 bit with Firefox 19 and it doesn't happen even with the exact same add-ons. I'm convinced it's something inside Firefox....everything else has pretty much been eliminated. If anyone can get a handle on this it would be greatly appreciated.

Modified by sfox410

sfox410 0 solutions 3 answers

After my on-going problem stated above, I uninstalled Firefox 19 and installed Firefox 14 and the problem appears to be gone. I'm using the same profile as in Firefox 19, so no settings or add-ons were changed. Firefox 19 would self-start the Firefox.exe32* and max out my CPU.....I would shut it down in the WTM, but within 10 minutes it would restart, again maxing out my CPU.

Firefox 14 doesn't seem to have this quirk, I've left it on for hours and shut it down, it hasn't happened.....so I'll stick with this for a while until this gets straightened out. The problem with FF14 is that when you close it, it doesn't close, Firefox.exe32* continues to run (in WTM) and you can't reopen later without going into the WTM and ending it first......but at least it doesn't use valuable CPU resources. Who knows....maybe one day Firefox will work the way it is intended. I love the browser, I just don't like all the hassles and quirks.


UPDATE: Nope......it didn't work after all. What's most surprising is that I uninstalled Firefox completely.....but "Firefox.exe *32" still runs and maxes out my CPU. I've run Malwarebytes, Norton Antivirus and IObit Malware Fighter...nothing turned up. I guess next I'll have to run regedit and remove every entry in the registry that has the word Firefox in it. This is like dealing with malware or a virus! Either Mozilla Firefox is has a huge system resource sinkhole in its code or there is some sort of malware masquerading as Firefox.

After my on-going problem stated above, I uninstalled Firefox 19 and installed Firefox 14 and the problem appears to be gone. I'm using the same profile as in Firefox 19, so no settings or add-ons were changed. Firefox 19 would self-start the Firefox.exe32* and max out my CPU.....I would shut it down in the WTM, but within 10 minutes it would restart, again maxing out my CPU. Firefox 14 doesn't seem to have this quirk, I've left it on for hours and shut it down, it hasn't happened.....so I'll stick with this for a while until this gets straightened out. The problem with FF14 is that when you close it, it doesn't close, Firefox.exe32* continues to run (in WTM) and you can't reopen later without going into the WTM and ending it first......but at least it doesn't use valuable CPU resources. Who knows....maybe one day Firefox will work the way it is intended. I love the browser, I just don't like all the hassles and quirks. UPDATE: Nope......it didn't work after all. What's most surprising is that I uninstalled Firefox completely.....but "Firefox.exe *32" still runs and maxes out my CPU. I've run Malwarebytes, Norton Antivirus and IObit Malware Fighter...nothing turned up. I guess next I'll have to run regedit and remove every entry in the registry that has the word Firefox in it. This is like dealing with malware or a virus! Either Mozilla Firefox is has a huge system resource sinkhole in its code or there is some sort of malware masquerading as Firefox.

Modified by sfox410

sfox410 0 solutions 3 answers

Helpful Reply

OK!.........A SOLUTION AT LAST!.........I downloaded and ran a free antivirus/trojan program called "Combfix" and ran it after shutting off my anti-virus program. It runs through the command prompt, but you startit through windows like any other program....it's automated...easy even for a novice. It took about a half an hour and a reboot, but no more resource hog. I re-installed Firefox 19 and all is well. None of the other anti-virus programs I used found anything. Combo fix deleted about 12 files during its run and now my system runs like it should.........finally. I hope this tidbit of info helps others with similar problems.

OK!.........A SOLUTION AT LAST!.........I downloaded and ran a free antivirus/trojan program called "Combfix" and ran it after shutting off my anti-virus program. It runs through the command prompt, but you startit through windows like any other program....it's automated...easy even for a novice. It took about a half an hour and a reboot, but no more resource hog. I re-installed Firefox 19 and all is well. None of the other anti-virus programs I used found anything. Combo fix deleted about 12 files during its run and now my system runs like it should.........finally. I hope this tidbit of info helps others with similar problems.
AndriaD 0 solutions 2 answers

I was having the exact same problem, running 19.0.2 on WinXPPro w/4 gb RAM; from the time I installed that update, everytime I opened FF, within 15 mins, CPU usage would be at 100% and I could sometimes not even get control back of the machine, but had to hold down the OFF button to do anything. I've just installed the latest update, 20.0.1, and I'm wondering if this bug is fixed, because I didn't see anything specifically about it in the release notes.

The fact that this happened on both a mac and a win machine says this really is a problem, not something I imagined.

I've had to start using Chrome (I'm certainly not going to use IE!) just so I can continue working (I design templates so obviously I have to be online all the time), but Chrome is vastly inferior; I had to install some system updates and then reboot this morning, and when I restarted Chrome, all my settings were gone; man I was steamed, and I want my FF back, but NOT to hog all my system resources!!!

Andria

I was having the exact same problem, running 19.0.2 on WinXPPro w/4 gb RAM; from the time I installed that update, everytime I opened FF, within 15 mins, CPU usage would be at 100% and I could sometimes not even get control back of the machine, but had to hold down the OFF button to do anything. I've just installed the latest update, 20.0.1, and I'm wondering if this bug is fixed, because I didn't see anything specifically about it in the release notes. The fact that this happened on both a mac and a win machine says this really is a problem, not something I imagined. I've had to start using Chrome (I'm certainly not going to use IE!) just so I can continue working (I design templates so obviously I have to be online all the time), but Chrome is vastly inferior; I had to install some system updates and then reboot this morning, and when I restarted Chrome, all my settings were gone; man I was steamed, and I want my FF back, but NOT to hog all my system resources!!! Andria
AndriaD 0 solutions 2 answers

I've left FF running all afternoon while I went out; so far, no CPU-hogging or sending the fan into hyperdrive, so maybe 20.0.1 has fixed that particular NASTY bug.

Thx!! Andria

I've left FF running all afternoon while I went out; so far, no CPU-hogging or sending the fan into hyperdrive, so maybe 20.0.1 has fixed that particular NASTY bug. Thx!! Andria