[ovs-discuss] Openvswitch performance limitation

[Gurucharan Shetty]

On Wed, Mar 6, 2013 at 7:14 AM, Tmusic <Tmusic987 at gmail.com> wrote:
> Hi,
>
> I'm running ovs on Ubuntu 11.04 and noticed that it can process max. 200Mbps
> (NIC's are gigabit).
That is quite low. I have seen 9 Gbps on non-tunnel mode (on 10G
NICs). You are sending traffic
through VM or through the host? If the former, use a high performance
driver. You can always
remove openvswitch and see the throughput with the exact same setup
with just the linux bridge and compare.



>
> It's used as an openflow switch with POX as controller and about 10 flows
> are installed. ovs is running with kernel module. The CPU is a quadcore
> Intel Xeon running at 2.2Ghz and one of the cores is fully used by vswitchd.
> So the CPU is limiting in this case. I'm pretty sure there are  are no loops
> in the network.
>
> Is this normal level of performance that can be expected from ovs or could
> something wrong with the configuration?
>
> Kind regards and thank you in advance,
>
> Tim
>
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