On Mon, Apr 28, 2014 at 1:37 PM, Lopez, James <[email protected]> wrote: > Team, I am working through an issue with OVS and tunneling. My setup > consist of 2 nodes running Ubuntu 12.04 LTS / KVM / OVS 1.10 and the > Mellanox Connect X3 , and 2 nodes running Ubuntu 12.04 LTS / KVM / OVS 1.10 > and the Mellanox Connect X3 Pro. Currently I am seeing an 85% reduction of > throughput VM-VM using iperf vs the same iperf test running on the nodes > br-tun to br-tun… ConnectX3 and ConnectX3 Pro show the exact same results , > also although VXLAN performance is slightly better it still shows the same > 85% reduction. > > > > I can clear this up by adjusting the MTU’s > > > > 7000 on the VM > > 8000 on the br-tun > > 9000 on the nic > > > > Is this expected behavior ? Any help is greatly appreciated.
Yes, if there is fragmentation then that will greatly reduce performance. _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
