On Mon, Dec 11, 2017 at 8:21 PM, Beau Sapach <bsapach@ualberta.ca> wrote:
Yes, we've done some testing.  With an oVirt VM running on a host using 10Gb ethernet copying data to a physical machine also using 10Gb ethernet we don't see network utilization exceed 800Mbits or so.  A bit of research online yields some experimentation done by others who used SR-IOV to achieve 10Gb from a VM.

Are you using multiple TCP streams, jumbo frames, threads, etc.?
Y.


I'm not sure where the bottleneck is, possibly in the VirtIO driver.

Beau

On Mon, Dec 11, 2017 at 1:23 AM, Dominik Holler <dholler@redhat.com> wrote:
Is there an indication that the VMs will not take advantage of 10Gb?

On Thu, 7 Dec 2017 15:27:25 -0700
Beau Sapach <bsapach@ualberta.ca> wrote:

> Hello everyone,
>
> I see here:
> https://www.ovirt.org/blog/2017/09/introducing-ovirt-4.2.0/ that
> version 4.2 will have OVN support.  Does anyone know if this will
> allow VMs to take advantage of 10Gb networking without needing SR-IOV?
>
>




--
Beau Sapach
System Administrator | Information Technology Services | University of Alberta Libraries


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