kvm problem on karmic

[John Johansen]

Aljoša Mohorović wrote:
> On Wed, Dec 2, 2009 at 7:48 PM, John Johansen
> <john.johansen at canonical.com> wrote:
>> Is virtualbox running in an accelerated mode?
>>
>> Basically virtual box can run on processors without vt extensions, and kvm can't.
> 
> so i can get excellent performance on average hardware with virtualbox
> and should avoid kvm for that.
> i could use kvm on dedicated hardware intended for virtualization and
> get excellent performance?
> is this correct?
> 
essentially yes.  KVM used to have an acceleration component that would allow it to
work on none vt hardware at reasonable speeds, but it was removed for various reasons.
You could use KVM + qemu but it is not as fast a virtual box on hardware without vt
extension, or you could use vmware which is as fast or even faster than virtual box.

john