not sure if this is the same bug or if I should report a new one, but I get gradually increasing CPU usage the longer I have the program open. At first I thought it was from having too many tabs open but even after closing all of them, it was still sucking a massive amount of CPU. Then I close and restart firefox and it's fine. I'm not sure if this is an upstream programmer error on the part of Mozilla or if it's just firefox's ubuntu packager using far too aggressive optimization flags that screwed something up subtly. (about:buildconfig reveals a startling amount of optimization flags, including that it used -Os instead of -O2)
Mind you, Firefox's performance doesn't slow down any. I can only detect that it's happening by monitoring my CPU usage. It's a very subtle problem. It only appears after a long session in which firefox has not been closed and restarted. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1064474 Title: Firefox high cpu usage Status in “firefox” package in Ubuntu: Confirmed Bug description: Firefox uses 76% of the cpu with no apparent reason. No flash or anything fancy, just by opening Google search page. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: firefox 15.0.1+build1-0ubuntu2 ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: fglrx AddonCompatCheckDisabled: False ApportVersion: 2.6.1-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: atoulan 2588 F.... pulseaudio /dev/snd/controlC0: atoulan 2588 F.... pulseaudio BuildID: 20120907073726 Channel: Unavailable Date: Tue Oct 9 17:13:28 2012 ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) IpRoute: default via 192.168.1.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.15 metric 9 PrefSources: prefs.js [Profile]/extensions/{b9db16a4-6edc-47ec-a1f4-b86292ed211d}/defaults/preferences/prefs-dwhelper.js [Profile]/extensions/[email protected]/defaults/preferences/prefs.js Profiles: Profile0 (Default) - LastVersion=15.0.1/20120907073726 (In use) RelatedPackageVersions: gecko-mediaplayer 1.0.6-1ubuntu2 totem-mozilla 3.4.3-0ubuntu4 icedtea-7-plugin 1.3-1ubuntu1 adobe-flashplugin 11.2.202.238-0precise1 google-talkplugin 2.8.5.0-1 RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: Upgraded to quantal on 2012-10-08 (0 days ago) dmi.bios.date: 04/21/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A13 dmi.board.name: 03C6YH dmi.board.vendor: Dell Inc. dmi.board.version: A13 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A13 dmi.modalias: dmi:bvnDellInc.:bvrA13:bd04/21/2011:svnDellInc.:pnInspironN5010:pvrA13:rvnDellInc.:rn03C6YH:rvrA13:cvnDellInc.:ct8:cvrA13: dmi.product.name: Inspiron N5010 dmi.product.version: A13 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1064474/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
