Comment 19 for bug 1252900

Sorry. I was not receiving updates on this bug.

As it can be seen in the last tests I did in comment 6, the download and upload speed were good between an instance and the Internet, not only between two instances running on separate compute nodes.

Also, the physical interface used by br-ex on my network node has GRO turned ON and this doesn't seem to affect the network performance, so I'm not sure that's the issue:

root@quantum-network:~# ovs-vsctl list-ports br-ex
eth0
qg-bb60f501-45
root@quantum-network:~# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: on