Re: [Xen-users] Xen Performance

[Grant McWilliams <grantmasterflash@xxxxxxxxx>]

On Fri, Oct 16, 2009 at 12:51 PM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:

On Sat, Oct 17, 2009 at 2:19 AM, Grant McWilliams
<grantmasterflash@xxxxxxxxx> wrote:

> However a PV on Xen should
> cream KVM in just about every other aspect.

One of the reasons for pv_ops support in Linux kernel was that so when
the kernel runs in virtualization solutions (KVM, Xen, VMware, etc) it
can automatically switch and use virtualization-friendly instructions,
thus eliminating CPU overhead imposed by hardware-assisted
virtualization, achieving similar performance to that of Xen PV guest.
At least in theory :)

> I've heard and I haven't
> finished my testing yet to confirm this that KVM is faster than a Xen HVM
> doing the same tasks if they both have PV drivers which means KVM may be
> better solution for virtualizing Windows.

Do share your test results once you have them.

> I have a contract for Virtualizing
> 75 Window 2K systems

Are they even supported? Mainstream support ended many years ago.

Sorry Win 2k8... Thought one thing, wrote another.
 

--
Fajar

_______________________________________________

Grant McWilliams

Some people, when confronted with a problem, think "I know, I'll use Windows."
Now they have two problems.
 

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