VirtualBox

Ticket #5294 (new defect) — at Version 1

Opened 9 years ago

Last modified 8 years ago

VirtualBox performance is much worse when Intel VT-x is enabled

Reported by: m_gol Owned by:
Priority: major Component: other
Version: VirtualBox 3.0.8 Keywords: intel, vt, vt-x, virtualization, 64, 32
Cc: Guest type: Windows
Host type: Linux

Description (last modified by frank) (diff)

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.

I checked both on OSE version and a closed one. My OS is 64-bit Ubuntu Karmic. For more information, see here:  https://bugs.launchpad.net/bugs/455112

Change History

comment:1 Changed 9 years ago by frank

  • Description modified (diff)
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