Anyone running guest OS with more than one vCPU?

[baekmark]

Hi there

I'm trying to run some of my Guest OS'es with more juice than just one CPU, but I can't get it to run stable! It does work, but will crash randomly.

I have now downgraded a 2 vCPU Windows 2003 SE 32bit to only one vCPU. It's stable all right, but it also slow.

I would like to hear from you if you are running with more than one vCPU, how you did, and what version etc.

I'm using a Sun Fire X2270


System Configuration: Sun Microsystems SUN FIRE X2270
BIOS Configuration: American Megatrends Inc. 2.03 04/09/2010
BMC Configuration: IPMI 1.5 (KCS: Keyboard Controller Style)

==== Processor Sockets ====================================

Version Location Tag
-------------------------------- --------------------------
Intel(R) Xeon(R) CPU E5504 @ 2.00GHz CPU 1
Intel(R) Xeon(R) CPU E5504 @ 2.00GHz CPU 2

The OS is Solaris 11 Express:
SunOS x2270 5.11 snv_151a i86pc i386 i86pc Solaris

VirtualBox 4.0.8

Any help is appreciated!

Lars

[baekmark]

Well I guess not! No one is running a guest windows os with more than one vCPU!
It kind of render the multi vCPU useless!!

I have another installation on a similar server, but other CPU's

System Configuration: Sun Microsystems SUN FIRE X2270
BIOS Configuration: American Megatrends Inc. 2.03 04/09/2010
BMC Configuration: IPMI 1.5 (KCS: Keyboard Controller Style)

==== Processor Sockets ====================================

Version Location Tag
-------------------------------- --------------------------
Intel(R) Xeon(R) CPU L5520 @ 2.27GHz CPU 1
Intel(R) Xeon(R) CPU L5520 @ 2.27GHz CPU 2

This one is also running a Windows 2003 with 2 vCPU, and it's stable and fast.

The only difference is the CPU's. I'm getting 16 vCPU with the server that have the Intel L5520! and only 8 vCPU with the Intel E5504!

Anyone any input, help, etc....

Lars

[timtimtim]

Hi, Lars,

I have tried windows xp and windows xp 64-bit guests using 2 vCPUs without any problem (windows 2000 also, if I remember correctly, but not absolutely sure). I'm using vbox 3.2.12. I'm using a quad-core phenom II as my real CPU. Note that I build the VMs from the ground up using vboxmanage scripts so I can send these if they will help.