On Thu, Apr 19, 2012 at 03:53:39AM +0000, Chegu Vinod wrote:
>
> Hello,
>
> Perhaps this query was answered in the past. If yes kindly point me to
> the same.
>
> We noticed differences in networking performance (measured via netperf
> over a 10G NIC) on an X86_64 server between the following two
> configurations :
>
> 1) Server run as a KVM Host (but with no KVM guests created on it (or) no
> extra bridges created other than the default vibr0 bridge)
>
> vs.
>
> 2) The same server running the same version of Linux but without any of the
> virtualization software installed on it.
>
> Config #2 performed much better !
> Is this expected ? What are the reasons behind this ?
>
> Is there any way to gain back the loss in performance on the KVM host
> without having to uninstall the virtualization software (i.e. in Config 1).
>
Can you list exactly what you need to uninstall to get performance back?
--
Gleb.
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