How to makesure VM is in Para virtualization mode on XEN?

Posted by ananthan on Server Fault See other posts from Server Fault or by ananthan
Published on 2012-09-20T13:08:12Z Indexed on 2012/09/20 15:40 UTC
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Filed under:

xen

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kvm-virtualization

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xenserver

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intel-vt-x

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paravirtualization

I am having a server running XEN,with ubuntu 12.04 as Domain 0.

Intel VT is turned on by default and i dont want to run any Windows OS as VM. So

1. how can i makesure that all the created VM will be in
paravirtualized mode even with VT enabled?

I have heard that in Full Virtualization hypervisor needs to work hard for emulating all the underlying hardware,which may reduce performance for too much i/o specific applications when compared to para mode.

2.Since i am running only Linux VMs do i really need to enable VT
support?

3.Can i be able to run Linux VM in para mode with VT enabled?

4.Will simply turning on VT support changes virtualization from para to full virtualization??

5.Will there be any performance improvement for VM running Linux OS if VT is enabled?

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