Open Stack

And the OVS release 1.11 fixes performance issues as discuss here :
http://www.mail-archive.com/discuss@openvswitch.org/msg07574.html

Édouard.


On Wed, Oct 16, 2013 at 11:10 AM, Jacob Godin <jacobgodin at gmail.com> wrote:

> Hi Darragh,
>
> Thanks for the input! I'm using Ubuntu 12.04 with the latest 3.5.0 kernel
> from stable with Grizzly.
>
> I followed a suggestion to upgrade OVS from stable to the latest Havana
> release under the Cloud Archive. This moved me from 1.4.0 -> 1.10.2. The
> migration was relatively seamless, and has fixed the issue.
>
> I'm not sure if this was a bug in 1.4.0 (which maybe the veth setting
> would have fixed), however the upgrade has completely fixed my latency
> issues.
>
>
> On Wed, Oct 16, 2013 at 5:47 AM, Darragh O'Reilly <
> dara2002-openstack at yahoo.com> wrote:
>
>> Jacob,
>>
>> what operating and kernel are you using?
>> what ovs datapath (dpkg -l openv\*) ?
>> what version of openstack?
>>
>> Maybe it is an issue getting in and/or out of the router namespace. Try
>> running tcpdump on the qr-xxxxxx-xx (from namespace) and the physical
>> interface in br-ex (from root namespace), and do a ping from namespace to
>> outside. Then compare the timestamps on the two tcpdumps. Then try a ping
>> from outside to in.
>>
>>
>> Jame Page reported a router performance issue recently, and setting
>> ovs_use_veth=true somehow fixed it.
>>
>> http://lists.openstack.org/pipermail/openstack/2013-October/001811.html
>>
>>
>> Re, Darragh.
>>
>>
>> _______________________________________________
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>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>
>
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