[ovirt-users] 10Gb Networking with OVN

[Yaniv Kaul]

On Mon, Dec 11, 2017 at 8:21 PM, Beau Sapach <bsapach at 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 at 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 at 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*
> *Phone: 780.492.4181 <(780)%20492-4181> | Email: Beau.Sapach at ualberta.ca
> <Beau.Sapach at ualberta.ca>*
>
>
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