Li, Chen
Cc: discuss@openvswitch.org; Gurucharan Shetty
Subject: Re: [ovs-discuss] network bandwidth in Openstack when using OVS+VLAN
Few more things to check:
* are you using KVM? If yes, can you verify that your VMs are using vhost_net,
please? In the KVM process related to the VM there should be
t have a linux bridge environment.
>
> But, I remember in virtio test, while I create bridge by hand and assigned
> it to an instance, I can always get near hardware limitation bandwidth if I
> have enough threads.
>
> ** **
>
> ** Are you using tunnels? If you are using a
uantum+OVS+VLAN.
Thanks.
-chen
From: Gurucharan Shetty [mailto:shet...@nicira.com]
Sent: Tuesday, July 30, 2013 12:06 AM
To: Li, Chen
Cc: discuss@openvswitch.org
Subject: Re: [ovs-discuss] network bandwidth in Openstack when using OVS+VLAN
There could be multiple reasons for the low throughpu
There could be multiple reasons for the low throughput. I would probably
look at the following.
* Is the VM ethernet driver a para-virtual driver? Para-virtual drivers
give a good performance boost.
* Is TSO ON in the VM and the Hypervisor?
* What throughput do you get while using Linux bridge ins
Hi list,
I'm a new user to OVS.
I installed OpenStack Grizzly, and using Quantum + OVS + VLAN for network.
I have two compute nodes with 10 Gb NICs, and the bandwidth between them is
about 8.49 Gbits/sec (tested by iperf).
I started one instance at each compute node:
instance-a => compute1
i
