Open Stack

On 10/31/2012 09:48 AM, Edgar Magana (eperdomo) wrote:
> Hi Folks,
>
> I am running OpenStack Folsom with Quantum/OVS plugin. I am running 
> some performance tests for Quantum, basically I am creating 5000 
> network with one subnet each one of them.
> After the first ~50 -- 70 networks the system response time is slower 
> and slower, to the point that it could take up to ~6 - 7 seconds to 
> create just a network and the same for the subnets.

Hi,
Is the problem you are seeing with the Quantum service or the agents? 
Off the bat I would say that it is with the Quantum service. Are the 
calls done in parallel or are they done sequentially?

There are a number of things that we should do to isolate this:
1. Check the internal logic of the network creation. Basically there are 
3 stages:
      i. provider network treatment
     ii network create
     iii. l3 notification
It would be interesting to see who eats the most time.
2. Need to profile database access

Thanks
Gary

> I would like to know if somebody else has experimented this kind of 
> behavior in Quantum or even in nova-network.
>
> Thanks,
>
> Edgar
>
>
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