[ovirt-users] Using 10gb vNIC/vbridge into VM is possible?

Lior Vernia lvernia at redhat.com
Sun Dec 21 08:58:17 UTC 2014



On 19/12/14 22:19, Amador Pahim wrote:
> On 12/19/2014 02:08 PM, Darrell Budic wrote:
>> I tried a quick iperf test a while back and got 3-4Gb/sec between a
>> pair of VMs on separate hosts with a 10G infrastructure, no real
>> tuning and no SRIOV. That met my needs so I didn’t try anything
>> further. If you were aiming for 10G for all, you’d want to work on
>> SRIOV I imagine, but they get pretty good performance even without it.
> 
> Maybe we should report vNIC speed as the speed of underlying NIC/Bond.
> Even being the underlying NIC/Bond shared, it would reflect better the
> vNIC max. speed than a fake hard coded value.
> 

Or maybe even have it configurable from the GUI?...

>>
>>
>>> On Dec 19, 2014, at 4:49 AM, Kalil de A. Carvalho <kalilac at gmail.com
>>> <mailto:kalilac at gmail.com>> wrote:
>>>
>>> Dear Amador.
>>>
>>> No, unfortunately not.
>>>
>>> This was just a friend question, because he need VM with 10GB NIC's.
>>>
>>> Today he is using Xenserver, this solution does not attend his
>>> expedition and he is research another solution.
>>>
>>> I told him about oVirt/KVM but this is a prerequisite to use.
>>>
>>> I will plan with him to try make a project to test a take the resolts.
>>>
>>> Best regards. 
>>>
>>> On Fri, Dec 19, 2014 at 1:18 AM, Amador Segundo <asegundo at redhat.com
>>> <mailto:asegundo at redhat.com>> wrote:
>>>
>>>     Virtio devices does not support speed, so we fake their speeds
>>>     showing "1000mbps" in Admin. Portal. If your boxes have 10gbps
>>>     devices then your vms are already taking advantage of that. Did
>>>     you test it? Could you share some results? 
>>>
>>>
>>>     -----Original Message----- 
>>>     From: Kalil de A. Carvalho [kalilac at gmail.com
>>>     <mailto:kalilac at gmail.com>] 
>>>     Received: Thursday, 18 Dec 2014, 22:59 
>>>     To: users at ovirt.org <mailto:users at ovirt.org> 
>>>     Subject: [ovirt-users] Using 10gb vNIC/vbridge into VM is possible? 
>>>
>>>
>>>     Hello all.
>>>
>>>     Today a follow work ask me if is possible to use vNIC or vbridge
>>>     in a VM managed by ovirt.
>>>
>>>     What he wants is to have a virtual 10gb network to some machines.
>>>
>>>     All hosts NIC's are 10gb.
>>>
>>>     Is this possible?
>>>
>>>     If yes how can I do it?
>>>
>>>     Best regards.
>>>
>>>
>>>
>>>
>>> -- 
>>> Atenciosamente,
>>> Kalil de A. Carvalho
>>>
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>>> Users mailing list
>>> Users at ovirt.org <mailto:Users at ovirt.org>
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
> 
> 
> 
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