[Nux]

Would love to see in there KVM and Xenserver; you know, stuff that actual clouds run on.

[bradleyland]

This is pretty clearly a test of developer related tools, not production cloud server infrastructure. I'm not even sure there's an equivalent of VirtualBox/VMWare shared folders in KVM or Xen, because guests and hosts don't usually share folders in the same way that you do with these workstation virtualization tools.

...

Spoke too soon. A Google search shows there are some methods [1], but their use cases are different.

[1]: http://www.linux-kvm.org/page/9p_virtio

[mitchellh]

bradleyland is correct: This test was focused primarily on using VMs for development tools. This test was done on a local machine with desktop virtualization software. The opening paragraph mentions I was investigating performance for development environments. This post should not be used for any production applications, since it would make no sense.

[liuw]

I think you mean KVM and Xen. Xen hypervisor is open source project just like KVM while XenServer is a product that uses Xen hypervisor.

Just think of Linux kernel and Linux distributions.

[Nux]

I actually meant Xenserver (which is open source, too), but you do have a valid point. Xen's in use a lot.