Firefox uses high CPU for extended periods of time when spawning a new window with many tabs already open
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
firefox (Ubuntu) |
Expired
|
Low
|
Unassigned | ||
firefox-3.0 (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
If I have many browser tabs (in one or many windows) open already and I open a new window (either by clicking a link that opens a new window, implicitly having a window opened by a pop-up that slips through the cracks, or by invoking the "new window" action by the keyboard or menu), Firefox locks up (fails to repaint any of its windows) for an extended period of time (30 to 40 seconds is not unheardof) and uses 100% CPU. The time spent appears to be proportional to the number of tabs open.
I took a preliminary look into Firefox with a debugger while it was doing this, and a few samples showed that it appeared to be spending some time laying out all of its pages that it had open again. I could be way off base, though; I took 5 or 6 non-scientific samples with control-c (gdb) bt, and I don't know Firefox's internals well enough to say that's what those functions actually did.
It adversely impacts Firefox's usability.
description: | updated |
Changed in firefox: | |
assignee: | nobody → mozillateam |
importance: | Undecided → Low |
Changed in firefox: | |
assignee: | mozillateam → mozilla-bugs |
Changed in firefox-3.0 (Ubuntu): | |
status: | Fix Released → Fix Committed |
Is this still an issue for you? We are trying to trying sort out the older Mozilla issues and would like to know if this still happens.
What version of firefox are you using and what version of ubuntu is this on?
Which flash package do you have installed?
Which Java package do you have installed?
Which firefox extensions do you have installed?
Can you please provide us with the links?