[Openstack] Is the Quantum a network bottleneck

Gary Kotton gkotton at redhat.com
Thu Jan 24 13:26:48 UTC 2013


On 01/23/2013 11:32 AM, Staicu Gabriel wrote:
> These are great news Gary.
> Do you happen to know if the patch will be also available for folsom?

I think that we will have to wait and see. I do not think that the 
chances are great as it is a major change and could cause instability in 
the stable version.

>
> Thanks,
> Gabriel
>
> ------------------------------------------------------------------------
> *From:* Gary Kotton <gkotton at redhat.com>
> *To:* jian.wen at canonical.com
> *Cc:* openstack at lists.launchpad.net
> *Sent:* Wednesday, January 23, 2013 10:08 AM
> *Subject:* Re: [Openstack] Is the Quantum a network bottleneck
>
> On 01/22/2013 07:02 PM, Jian Wen wrote:
>> On 2013年01月22日 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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>
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