Comment 22 for bug 1252900

Hi Darragh,

I was referring at the fact that running bandwidth tests from an instance showed good results (downloaded ~300 MB in 70s, or obtained 90.15 Mbit/s during a speedtest) -> see the end of comment 6.

Below are some more details about my network node:

root@quantum-network:~# ovs-vsctl -V
ovs-vsctl (Open vSwitch) 1.10.2
Compiled Oct 8 2013 15:09:03

root@quantum-network:~# uname -a
Linux quantum-network.tor.lab 3.2.0-56-generic #86-Ubuntu SMP Wed Oct 23 09:20:45 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

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

root@quantum-network:~# ethtool -i eth0
driver: bnx2
version: 2.1.11
firmware-version: bc 4.4.1 UMP 1.1.9
bus-info: 0000:03:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes

Maybe the issue was introduced in later kernels and the GRO fix is needed there, but I don't experience this issue in kernel 3.2.0-56.