[Openstack] Is the Quantum a network bottleneck

Gary Kotton gkotton at redhat.com
Wed Jan 23 08:08:25 UTC 2013


On 01/22/2013 07:02 PM, Jian Wen wrote:
> On 2013?01?22? 10:56, Balamurugan V G wrote:
>> Hi,
>>
>> In an Openstack deployment using Quantum, the compute nodes access 
>> the public/external network via the network node (as per the diagram 
>> http://docs.openstack.org/trunk/openstack-network/admin/content/connectivity.html).
>>
>> So if I have a hundred compute nodes each running hundred instances, 
>> wouldn't the link to the network node choke? Also wouldnt the network 
>> node's resources be a bottleneck?
>>
>> Regards,
>> Balu
>>
>>
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>  Quantum Multi-host DHCP and L3
> https://blueprints.launchpad.net/quantum/+spec/quantum-multihost

Yes. At the moment the network node is the bottleneck. There is a patch 
upstream in review that will solve this issue:
https://review.openstack.org/#/c/18216/

Hopefully this will be ready in the Grizzly cycle.

In addition to this it also provides HA for the L3 and DHCP agents.
Thanks
Gary

>
> -- 
> Jian Wen
>
>
> _______________________________________________
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