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Re: [Xen-users] HVM or not HVM?
| To: | Johann Spies <jspies@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] HVM or not HVM? |
| From: | Nico Kadel-Garcia <nkadel@xxxxxxxxx> |
| Date: | Mon, 27 Aug 2007 11:07:22 +0100 |
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Johann Spies wrote: There's a nice nutshell explanation at http://virt.kernelnewbies.org/TechOverview. Basically certain operations are *extremely* expensive to virtualization. Para-virtualized kernels simply don't use those operations. (I use the word "simply" in a very genteel sort of way, it's not that simple.)On Fri, Aug 24, 2007 at 04:02:33PM +0100, Mark Williamson wrote:HVM will give you greater flexibility in terms of what guest OSes you can offer to customers (e.g. non-Linux, maybe older Linux, etc).In a VPS environment (a dom0 which hosts some domU used as VPS by some customers, and you don't know what customers do with the domUs), do you think it is better to use HVM domU or non-HVM domUs?PV should achieve better per-guest performance, and therefore let you run moreThis is a suprise to me. I would have thought that one would get better performance from a HVM guest. Why would PV 'achieve better per-guest performance'? _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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