VirtualBox performance is much worse when Intel VT-x is enabled
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Virtualbox |
Won't Fix
|
Unknown
|
|||
virtualbox-ose (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: virtualbox-ose
I have Dell Latitude E6500 with P8600 CPU. When I run my Windows XP guest on VirtualBox OSE without virtualization VT-x option inactive it runs much faster than in the case I turn it on. It is really visible - with VT-x on I even see how screen flickers during the boot process.
I did Peacekeeper tests in Firefox and I got these results:
1) VT-x off, 3D support off - 1596
2) VT-x off, 3D support on - 1679
3) VT-x on, 3D support off - 900
4) VT-x on, 3D support on - 1314
Google Chrome behaves even more strange - with VT-x off it runs faster than Firefox, while with VT-x on it runs *VERY* slow but looses no frames in graphic tests and it finally gets about 8800 points.
ProblemType: Bug
Architecture: amd64
CheckboxSubmission: b35340b62900295
CheckboxSystem: d00f84de8a55581
Date: Mon Oct 19 04:44:51 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha amd64 (20091008)
Package: virtualbox-ose-qt 3.0.8-dfsg-1ubuntu1
ProcVersionSign
SourcePackage: virtualbox-ose
Uname: Linux 2.6.31-14-generic x86_64
VirtualBoxOse.
ii virtualbox-
ii virtualbox-ose 3.0.8-dfsg-1ubuntu1 x86 virtualization solution - base binaries
ii virtualbox-ose-qt 3.0.8-dfsg-1ubuntu1 x86 virtualization solution - Qt based user
ii virtualbox-
Changed in virtualbox: | |
status: | Unknown → New |
Changed in virtualbox-ose (Ubuntu): | |
status: | New → Fix Released |
Changed in virtualbox: | |
status: | New → Fix Released |
Changed in virtualbox: | |
status: | Fix Released → Won't Fix |
I have the same experience with the VirtualBox-3.0 PUEL version from sun's repository. With VT-x/AMD-V enabled, my Windows XP Pro virtual machine is unusable. After I switch VT-x off, it runs well.