Canvas causes compiz slowdown when rendering offscreen

[Richard Lyon]

Binary package hint: firefox

Using the Three.js engine (probably unimportant, apart from the fact that it alters the SVG data 60 times a second), when I'm rendering some nodes off-screen, the system has full CPU usage and graphics stop updating.

Example can be seen at http://richardlyon.co.uk/force/index2.html and using arrows+WASD to maneuver a node out of shot.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: firefox 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CheckboxSubmission: 2ee8eb587361598911edbb21c7b112ff
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Sat Oct 23 17:01:23 2010
FirefoxPackages:
 firefox 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
 firefox-gnome-support 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
 firefox-branding 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
 abroswer N/A
 abrowser-branding N/A
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: firefox

[Richard Lyon (richthegeek)]

Re security vulnerability, as it affects systems outside of the current Firefox tab (and Firefox itself) it could be used to crash a system.

[Launchpad Janitor (janitor)]

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