I've been having some pretty bad firefox performance issues in 13.10, even in safe mode. It seems that if I disable the the global menu with this (in about:config): ui.use_unity_menubar = false
then restart, performance is *greatly* improved. unity-panel-service and hud do not peg the CPU any more. Not sure why this was worse from me (guessing something in 23?) but now I can change tabs, load page, use the menu and the browser is snappy. -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/968533 Title: Alt-tab to Firefox sends Firefox to 100% CPU; unity-panel-service to 80% CPU and hud-service to 20-80% CPU Status in Unity: Confirmed Status in “unity” package in Ubuntu: Confirmed Bug description: I've been seeing UI hangs after switching tabs in Firefox, and switching from other applications to Firefox. It can take 3-8 seconds to change *tab*. During this time the CPU is maxed out; typical output from 'top' during this period shows 'hud- service' and 'unity-panel-service' combined using about the same CPU as Firefox itself: 100 10.4 26:07.73 firefox 53 0.6 6:14.86 hud-service 38 1.5 6:42.14 unity-panel-service I suspect that the change is causing a (an inefficient) re-index related to updated menu structures. (Eg. something like the history menu, although I can't see what it is as don't currently have a menu bar). To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/968533/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
