virtualbox.org

The upgrade from 3.0.0 to 3.0.2 brought only marginal improvements for SMP operation.
(host: Vista 64bit, guest: Fedora 10 64bit, AMD Athlon X2)

enabling 2 CPUs in the guest no longer breaks 3D support, but after running for several hours the machine still locks up solid, so hat only a virtual power cycle helps. For now, I am continuing to run with only 1 virtual CPU.

Roman

Same here. Host: Ubuntu Jaunty 32bit, guest: Windows XP 32 bit, cpu: Core2Duo.

Testing it right now. quad core is still worthless. Dual core seems about normal speed. Now started to download something and decode it and will see if it lock on me or not.

SawyerX wrote:Testing it right now. quad core is still worthless. Dual core seems about normal speed. Now started to download something and decode it and will see if it lock on me or not.

yeah i noticed quad cores doesn't work well with a few solaris/linux guests, dual is ok. anyone with more than 4 cores (core-i7?) care to comment if 4 cores works for them - i'm wondering if it doesn't like using all your cores.....?

sej7278 wrote:

SawyerX wrote:Testing it right now. quad core is still worthless. Dual core seems about normal speed. Now started to download something and decode it and will see if it lock on me or not.

yeah i noticed quad cores doesn't work well with a few solaris/linux guests, dual is ok. anyone with more than 4 cores (core-i7?) care to comment if 4 cores works for them - i'm wondering if it doesn't like using all your cores.....?

I have a Core2 Quad processor, and if I activate more than 1 processor in the Windows XP guest in VBox 3.0.2:
- from time to time, the guest crashes into BSOD,
- the performance is below what I would expect from 4 cores,
- sometimes, the guest fails to boot.

Nevertheless, the situation improved since 3.0.0, where the performance of Virtual SMP was horrible indeed, and the guest would crash all the time. Thank you, guys and gals from Sun ... a few more steps in this direction, and SMP will be fine.

As Terry said here, SMP development will probably take almost one year and several releases before it gets to a usable state.

Lets be patient, for now its great to see VB is already moving towards this goal!

I am getting similar (intermittent ?) BSODs on booting Windows XP (Ubuntu Maverick host) with both VirtualBox 3.2.8 and now 3.2.10 if I use more than 1 core.

billstei wrote:I am getting similar (intermittent ?) BSODs on booting Windows XP (Ubuntu Maverick host) with both VirtualBox 3.2.8 and now 3.2.10 if I use more than 1 core.

I have exactly the same configuration but running the Windows guest with 2 cores hasn't caused any problems any more in the past months. CPU Core2Duo, Kubuntu Maverick host 64bit.