[Openstack-operators] improve perfomance Neutron VXLAN

Pedro Sousa pgsousa at gmail.com
Fri Jan 23 15:42:47 UTC 2015


I think you're right, the nic is not offloading because testing  the
instances I see a process ksoftirqd/0 with high CPU on compute hosts.

Doing iperf on baremetal I don't see this process with high CPU.

Is my assumption right?


On Wed, Jan 21, 2015 at 3:59 PM, Robert van Leeuwen <
Robert.vanLeeuwen at spilgames.com> wrote:

>  >is there a way to improve network performance on my instances with
> >I changed the MTU on physical interfaces to 1600, still performance it's
> lower than in baremetal hosts:
> Do you have VXLAN hardware offloading on the NIC?
> I think you are hitting the maximum speed you can do encapsulation in
> software.
> You will need network cards that can do VXLAN offloading to go to similar
> speed as hardware (10Gbit).
> Cheers,
> Robert van Leeuwen
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