virtualbox.org

Hi guys

Due the missing multicore support in Microsoft Virtual PC I decided to give Virtual Box 3.0.10 a try.
In a first step I booted the existing Windows XP 32 bit service pack 3 harddrive image, reactivated windows and let the drivers reinstall. Everything worked fine.
Then I updated the HAL to multicore (halmacpi.dll, ntkrnlmp.exe) and increased the number of processors to 2. The system did start fine, in the task manager two cores were shown. In the device manager the computer was shown as ACPI Multiprocessor PC and the cores were also listed correctly.

Now the problem:
In the virtual machine I build a .NET solution. With more than one core I get strange internal compiler errors or sometimes a bluescreen after some minutes of building (minidump from guest os is attached). With the same configuration but only one core the system works fine for hours.

Any ideas?

My configuration:
Host:
Microsoft Windows Server 2003 R2, Standard x64 Edition Service Pack 2
4x Dual-Core AMD Opteron(tm) Processor 2218, 2.6 GHz, 4 GB RAM

Box (complete configuration file is attached):
Microsoft Windows XP Service Pack 3
IOACPI enabled, 1 core
2.5 GB RAM
128 MB Graphic, no 3D support
Audio USB and CD ROM disabled

Let me know if you need more informations.

Thanks in advance
Samuel

Hi again

I did some further investigations:
I tested the same harddisk image under a Windows XP 32 bit host. There I was able to run the virtual box and my application under multiple processors without any strange errors or bluescreens.

The configuration in detail
Host:
Microsoft Windows XP Professional Service Pack 3
Intel Core2 Duo CPU E6750

Box (complete configuration file is attached):
Microsoft Windows XP Service Pack 3
IOACPI enabled, 2 cores with VT-x/AMD-V enabled
900 MB RAM
128 MB Graphic, no 3D support
Audio USB and CD ROM disabled


Thanks in advance
Samuel

See this one http://forums.virtualbox.org/viewtopic.php?f=6&t=24104
This one might need a bugtracker ticket.

It's not exactly the same behaviour and operating systems than in your linked post but as far as I can judge the situtation there is maybe a bug or I miss something completly.
I hope an experienced user can jump in and check this?

I've attached another fileset which contains the box configuration and session logfile and the minidump.
As I already said: When using this configuration and switching back to one CPU everything works fine.

Samuel

Create a ticket on bugtracker and attach those files, posting them here is no good, the dev's only work from bugtracker not the forum (ok, rarely then).

Ok, ticket is created. Sorry for posting all the files here...
Samuel