[ovs-discuss] poor performance after adding vlan tag to a vport

[Hui Kang]

Hi, Justin,
I used OVS 1.9.3. But there is nothing suspicious in the log when I grep
for vlan in the log file.

- Hui


On Tue, Apr 29, 2014 at 5:28 PM, Justin Pettit <jpettit at nicira.com> wrote:

> On April 29, 2014 at 2:26:18 PM, Hui Kang (hkang.sunysb at gmail.com) wrote:
> > Hi,
> > I use iperf to test the 10G performance of OVS bridge with vlan tag added
> > on the vport for the VMs.
> >
> > On each machine, the OVS bridge are created on the Intel 82599 10G NIC. I
> > found the performance drops significantly when I added vlan tag on the
> > vport of both VMs.
> >
> > no vlan tag: 9.47 Gbps
> > add vlan tag: 3.96 Gbps
> >
> > Is this a normal behavior after adding vlan tag to the packet header?
>
> I don't think that should be happening.  What version of OVS are you
> running?  Do you see anything suspicious in your ovs-vswitchd.log?
>
> --Justin
>
>
>
>
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