Output of uname -a since that may be important for trouble-shooting
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Linux nothankyousir 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Personal computing discussed
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Linux nothankyousir 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
just brew it! wrote:I recall seeing this issue (slow performance with multiple virtual cores) in the past, but don't remember which combination of guest/host OSes I was using at the time. I just tried giving my 12.04 VM 4 virtual procs; it boots to the desktop in about 10 seconds, and opens a terminal pretty much instantaneously (sub-second).
What's your host OS? Does your CPU support hardware virtualization, and is it enabled in the BIOS? What version of VirtualBox? Did you install the Guest Additions?
My specs: Host is an AMD FX-8150 on an Asus M5A97-EVO, 16 GB RAM, SVM enabled, Ubuntu 10.04 64-bit with all current updates, VirtualBox 4.1.20 with extension pack. Guest is 1 GB RAM, 4 cores, APIC, PAE/NX, AMD-V, and nested paging all enabled, Ubuntu 12.04 64-bit with all current updates.
Flatland_Spider wrote:Out of curiosity, why do you want to give it four procs?
TDIdriver wrote:Typically I give the VM at least one proc less than the computer actually has. That way at least one is free to do background tasks. I didn't base that on anything other than it made sense, so that might not be the case.
ChronoReverse wrote:Since your system has VTD and EPT support, how about just installing the free Hyper-V Server 2012?
From what I hear, even the graphics card can run at native speeds now so both your systems (Win and Lin) can be virtualized and not really virtualized at the same time =D
bthylafh wrote:Maybe it's Ubuntu? I've got Mint 13 on a VirtualBox VM in Win7 x64, Core i7 CPU.
just brew it! wrote:bthylafh wrote:Maybe it's Ubuntu? I've got Mint 13 on a VirtualBox VM in Win7 x64, Core i7 CPU.
Mint is based on Ubuntu, and I tested on my setup using Ubuntu for both the host and guest. I suppose it could be the specific combination of Windows 7 and the version of Ubuntu the OP is using though.
Flatland_Spider wrote:Did you happen to change the Motherboard Chipset from PIIX3 to ICH9? The ICH9 "chipset" gave me some problems a while back with my Windows 7 VM. It's not the same, but it might help.