Ubuntu
firefox package

The browser causes 20-40% CPU load when displaying an animated gif

Bug #916591 reported by Alexander Broshevich on 2012-01-14

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	firefox (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

When firefox is displaying a gif, for example http://i.imgur.com/MVKsc.gif , the CPU is under constant 20-40% load and system feels to run slower. Same load with and without any addons. When i remove the element which contains the gif via firebug, the load instantly drops to 1-2%.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: firefox 9.0.1+build1-0ubuntu0.11.10.2
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: wl fglrx
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: vlad 1888 F.... pulseaudio
/dev/snd/controlC0: vlad 1888 F.... pulseaudio
BuildID: 20111228084940
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfbf00000 irq 52'
   Mixer name : 'IDT 92HD81B1X5'
   Components : 'HDA:111d7605,10280447,00100105'
   Controls : 14
   Simple ctrls : 9
Card1.Amixer.info:
Card hw:1 'Generic'/'HD-Audio Generic at 0xfbe40000 irq 53'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Channel: release
Date: Sat Jan 14 22:43:13 2012
ForcedLayersAccel: False
IfupdownConfig:
auto lo
iface lo inet loopback
IncompatibleExtensions: LastPass - <email address hidden>, Version=1.80.0, minVersion=1.9a2, maxVersion=1.9.6, Location=app-profile, Type=extension, Active=Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
default via 192.168.0.1 dev eth0 proto static
169.254.0.0/16 dev eth0 scope link metric 1000
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.3 metric 1
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=9.0.1/20111228084940 (Running)
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/19/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0WK2G6
dmi.board.vendor: Dell Inc.
dmi.board.version: A15
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A15
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd07/19/2011:svnDellInc.:pnInspironN5010:pvrA15:rvnDellInc.:rn0WK2G6:rvrA15:cvnDellInc.:ct8:cvrA15:
dmi.product.name: Inspiron N5010
dmi.product.version: A15
dmi.sys.vendor: Dell Inc.

Tags:

Revision history for this message

Alexander Broshevich (vcosvic) wrote on 2012-01-14:

AlsaDevices.txt Edit (586 bytes, text/plain; charset="utf-8")
AplayDevices.txt Edit (270 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (61.1 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (1.8 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (8.5 KiB, text/plain; charset="utf-8")
Card1.Codecs.codec.0.txt Edit (1.0 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (2.2 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.9 KiB, text/plain; charset="utf-8")
Extensions.txt Edit (1.0 KiB, text/plain; charset="utf-8")
IpAddr.txt Edit (679 bytes, text/plain; charset="utf-8")
IwConfig.txt Edit (251 bytes, text/plain; charset="utf-8")
Locales.txt Edit (273 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (20.0 KiB, text/plain; charset="utf-8")
PciMultimedia.txt Edit (1.2 KiB, text/plain; charset="utf-8")
PciNetwork.txt Edit (1.3 KiB, text/plain; charset="utf-8")
Plugins.txt Edit (714 bytes, text/plain; charset="utf-8")
Prefs.txt Edit (650 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (6.4 KiB, text/plain; charset="utf-8")
PulseSinks.txt Edit (4.1 KiB, text/plain; charset="utf-8")
PulseSources.txt Edit (4.8 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (120 bytes, text/plain; charset="utf-8")
Themes.txt Edit (129 bytes, text/plain; charset="utf-8")
WifiSyslog.txt Edit (222.5 KiB, text/plain; charset="utf-8")

Revision history for this message

Launchpad Janitor (janitor) wrote on 2012-08-11:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in firefox (Ubuntu):
status:	New → Confirmed

Revision history for this message

G.M. (sexxxenator) wrote on 2016-06-05:

I have the same problem, but on an old dual-core desktop machine, firefox takes up to 105% CPU (or more) and often freezes the whole machine.

A typical example is when sufing the:
http://izismile.com/
web site and open a few tabs with some of its pages. There's always a moment where you open a page like:
http://izismile.com/2016/06/03/page,2,daily_gifdump_30_gifs.html
and the whole firefox / computer freezes.

Interestingly, just opening a single tab with the page:
http://izismile.com/2016/06/03/page,2,daily_gifdump_30_gifs.html
alone does not seem to cause any problem.

Also, using about:config and all its options to clean up memory (GC/CC/Minimize) does not help...

So I assume there is a memory leak somewhere that reveals itself under high usage.

Report a bug

This report contains Public information

Everyone can see this information.

You are

Subscribing...

Edit bug mail

Other bug subscribers

Bug attachments

Add attachment

Remote bug watches

Bug watches keep track of this bug in other bug trackers.

Ubuntufirefox package

The browser causes 20-40% CPU load when displaying an animated gif

Bug Description

Other bug subscribers

Bug attachments

Remote bug watches

Ubuntu
firefox package