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V 17 & 18 use minimum of 30% cpu (even with all add-ons disable and safe mode) on MacBook 10.7

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Posted

I have been having problems since release 17 (at least) with Firefox sucking up CPU. I have 4GB ram and often have multiple programs open, including Firefox with between 5 and 15 tabs / windows. Decreasing the number of open tabs / windows will decrease CPU usage by 2% for each tab / window closed until it hits 30%, then no more improvement. Oddly enough it drops to a constant 25% when Firefox is NOT in safe mode and all my plugins are enabled. But not below.

Help. I love firefox, but it is becoming more and more problematic.

I have been having problems since release 17 (at least) with Firefox sucking up CPU. I have 4GB ram and often have multiple programs open, including Firefox with between 5 and 15 tabs / windows. Decreasing the number of open tabs / windows will decrease CPU usage by 2% for each tab / window closed until it hits 30%, then no more improvement. Oddly enough it drops to a constant 25% when Firefox is NOT in safe mode and all my plugins are enabled. But not below. Help. I love firefox, but it is becoming more and more problematic.

Modified by Uncle_Davey

Additional System Details

Installed Plug-ins

All currently disabled.

DivX 2.02.39 Flip4Mac 2.4.4.2 PDF Browser Plugin 2.4.4 Schubit QT 7.7.1 Real Player 0.0.121 Flash 11.5.502.146 Silverlight 5.1.10411.0 Webx64 General Plugin 1.205

No Extensions Default Theme

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

Safe-mode
All add-ons updated
All add-ons disabled (no difference)
Application Basics
Name
Firefox
Version
18.0.1
User Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:18.0) Gecko/20100101 Firefox/18.0
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
Important Modified Preferences
Name
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.history_expire_days.mirror
90
browser.places.importBookmarksHTML
false
browser.places.importDefaults
false
browser.places.leftPaneFolderId
-1
browser.places.migratePostDataAnnotations
false
browser.places.smartBookmarksVersion
4
browser.places.updateRecentTagsUri
false
browser.search.update
false
browser.search.useDBForOrder
true
browser.startup.homepage
http://www.google.com
browser.startup.homepage_override.buildID
20130116073211
browser.startup.homepage_override.mstone
18.0.1
dom.max_script_run_time
0
extensions.lastAppVersion
18.0.1
gfx.blacklist.webgl.msaa
4
network.cookie.prefsMigrated
true
network.dns.disableIPv6
true
places.database.lastMaintenance
1358616938
places.history.expiration.transient_current_max_pages
100664
places.last_vacuum
1314565516
plugin.disable_full_page_plugin_for_types
image/png,,,,,,,,,,,,,,,,,,,,
print.macosx.pagesetup-2
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO
print.print_bgcolor
false
print.print_bgimages
false
print.print_command
print.print_downloadfonts
true
print.print_evenpages
true
print.print_footerleft
print.print_footerright
print.print_headerleft
print.print_headerright
print.print_in_color
true
print.print_margin_bottom
0.5
print.print_margin_left
0.5
print.print_margin_right
0.5
print.print_margin_top
0.5
print.print_oddpages
true
print.print_orientation
0
print.print_pagedelay
500
print.print_paper_data
0
print.print_paper_height
11.00
print.print_paper_size
1626502930
print.print_paper_size_type
1
print.print_paper_size_unit
0
print.print_paper_width
8.50
print.print_printer
print.print_reversed
false
print.print_scaling
1.00
print.print_shrink_to_fit
true
print.print_to_file
false
print.print_unwriteable_margin_bottom
56
print.print_unwriteable_margin_left
25
print.print_unwriteable_margin_right
25
print.print_unwriteable_margin_top
25
privacy.clearOnShutdown.cookies
false
privacy.clearOnShutdown.offlineApps
true
privacy.cpd.downloads
false
privacy.cpd.formdata
false
privacy.cpd.history
false
privacy.cpd.offlineApps
true
privacy.cpd.sessions
false
privacy.donottrackheader.enabled
true
privacy.item.offlineApps
true
privacy.sanitize.migrateFx3Prefs
true
security.disable_button.openCertManager
false
security.disable_button.openDeviceManager
false
security.warn_viewing_mixed
false
Graphics
Device ID
0x 863
GPU Accelerated Windows
0/5 Basic no information
Vendor ID
0x10de
WebGL Renderer
NVIDIA Corporation -- NVIDIA GeForce 9400M 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
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSSSL
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSUTIL
3.14.1.0
3.14.1.0