On 6/30/23 09:25, Frode Nordahl wrote:
> Hello all,
> 
> On Tue, May 30, 2023 at 5:16 PM Felix Huettner
> <felix.huettner@mail.schwarz> wrote:
>>
>> Hi Dumitru,
>>
>> On Fri, May 26, 2023 at 01:30:54PM +0200, Dumitru Ceara wrote:
>>> On 5/24/23 09:37, Felix Huettner wrote:
>>>> Hi everyone,
>>>
>>> Hi Felix,
>>>
>>>>
>>>> Ilya mentioned to me that you will want to bring openstack examples to
>>>> ovn-heater.
>>>>
>>>
>>> Yes, we're discussing that.
>>>
>>>> I wanted to ask how to best join this effort. It would be great for us
>>>
>>> Everyone is welcome to contribute! :)
>>>
>>
>> Great, we will try that out.
> 
> Thank you for your interest in this effort, as promised I'm in the
> process of organizing a community meeting to get this going.
> 
> Below are some proposals for dates and times, please respond with a
> prioritized list of what works best for you and we'll try to land on a
> single date/time for a first meeting:
> Wednesday July 5th 13:00 UTC
> Tuesday July 11th 13:30 UTC
> Wednesday July 12th 8:30 UTC
> 

Wednesday July 12th 8:30 UTC
Wednesday July 5th 13:00 UTC
Tuesday July 11th 13:30 UTC (I only have a 30 min slot available here)

Thanks for organizing this, Frode!

>>>> to have a tool to scale test ovn. Also we have an ovn deployment with
>>>> currently 450 compute nodes where we can try to extract the typically
>>>> used northbound entries from.
>>>>
>>>
>>> This is great!  I'm not an OpenStack user so I'm probably not using the
>>> right terminology and I might be missing things but I think we're
>>> interested in:
>>> - how many tenant networks do you have in the cluster
>>> - for each tenant network:
>>>   - how many VMs (on average but maybe also min/max/etc)
>>>   - how many floating IPs (dnat-and-snat)
>>>   - how many compute nodes run VMs from this network
>>> - for each compute:
>>>   - how many VMs run on it (on average but also min/max/etc)
>>>
>>
>> Ok, so i'll try to give an overview below.
>> If you need any more detail just ask.
>>
>> General amount of nodes:
>> * ~500 Hypervisors
>> * 9 Nodes that are just serve as gateway chassis (connected to 4
>>   different external networks)
>>
>> Amount of tenant Networks (== logical routers): 2300 (only 1400 are
>> actually hosting VMs).
>>
>> Amount of logical Routers: 2010 (2000 of these have a chassisredirect
>> port that is hosted on one of the 9 nodes.
>>
>> * Amount of VMs:
>>    * min: 1
>>    * max: 300
>>    * avg: 4.5
>>    * 630 networks only have a single VM, 230 have two VMs and 190 have 3
>>      VMs.
>> * Amount of Hypervisors per network:
>>    * min: 1
>>    * max: 90
>>    * avg: 3.6
>>    * 650 networks only strech on a single hypervisor, 250 on two
>>      hypervisors, 180 on three hypervisors
>>
>> Regarding floating ips we have currently 1530. I'll give you the amount
>> per Logical router:
>> * min: 1
>> * max: 230
>> * avg: 2.7
>> * 430 routers have a single floating ip, 140 routers have 2 floating
>>   ips.
>>
>> Regarding VMs per Hypervisor we have:
>> * min: 1
>> * max: 80
>> * avg: 15
>>
>>
>> Other potentially interesting values:
>>
>> * Amount of Load_Balancer: 0
>> * Amount of Logical_Switch_Port type=virtual: 800
>> * Amount of Port_Group: 6000
>> * Amount of ACL: 35500
>>    * All of these referce portgroups in `match` using `@` or `$`
>>    * Referencing other portgroups using `$`: 8300
> 
> Thanks alot for providing this information, and gauging the size of
> your deployment, your inputs would be very valuable in this effort.
> One of the main goals of ovn-heater is the ability to simulate
> workloads, because as developers, we seldom have access to actual 500-
> or 1000- node clusters. Having a participant in the project with
> actual hardware installation of such a size would give us the
> opportunity to help confirm the accuracy of our simulations.
> 

+1

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