Open Stack

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Raghu V. Vadapalli
Principal Software Architect 
Smart Packet Solutions




On Monday, Sep 29, 2014 at 1:33 PM, NAPIERALAMARIA H <mn1921 at att.com>, wrote:

On 27.09.2014 06:37, Jason Kölker wrote:

>> On Sat, Sep 27, 2014 at 3:50 AM, Raghu Vadapalli <rvatspac... at gmail.com> 

>> wrote:

>>> As per this news article listed below, Rackspace is abandoning Open vSwitch.

>>> Is this where everyone else going in general ?

>> 

>> That conclusion is inaccurate. The entirety of the public cloud runs

>> openvswitch for both public/servicenet connectivity as well as

>> isolated tenant network features.The article is referring to the

>> private cloud distribution no longer choosing to use the Neutron

>> OpenVswitch plugin

>> (https://github.com/openstack/neutron/tree/master/neutron/plugins/openvswitch)

>> as it is being deprecated. The ML2 plugin replaces this and can use a

>> variety of mechanisms including openvswitch.

>> 

>> The article's conclusion that openvswitch is not ready for production

>> and high-volume workloads is ludicrous. Versions 2.0+ perform very

>> well with multithreading in the vswitchd process and megaflows in the

>> datapath. However it is important to point out that datapath

>> performance is very much related to the flows programmed. A poorly

>> written flow set will result in bad performance. Tuning the flows and

>> optimizing the ability for megaflow'ing is the key to high throughput.

 

> That's the theory though and the article seems to talk about practical

> problem Rackspace ran into with OVS so it would have been nice to learn

> what specifically was the problem.

 

> What are the alternatives though? As far as I know the regular linux

> bridge lacks most of the features of OVS and these are the only to

> options I've played with so far. Is the a third alternative out there

> that they've switched to?

 

One alternative is OpenContrail vRouter as ML3 plugin. It meets the scale and feature requirements.

 

Maria

 



​did you mean to say contrail with ML2 not ML3 ? I am not quite sure contrail integration but is ml3 available in icehouse yet ?
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