[ovs-dev] RFCv2: OVN database options

[Russell Bryant]

On Thu, Mar 10, 2016 at 9:41 PM, Han Zhou <zhouhan at gmail.com> wrote:

> On Thu, Mar 10, 2016 at 5:45 PM, Ben Pfaff <blp at ovn.org> wrote:
> >
> > On Thu, Mar 10, 2016 at 05:31:18PM -0800, Ben Pfaff wrote:
> > > I have been considering this as a minimum interesting scale.  It's hard
> > > for me to know what the interesting scale range is.  I am really happy
> > > to hear what is important to you?
> >
> > That ? was supposed to be an !
> >
> > > Can you tell me about what you want to scale to?
> >
> > But that's really a question.
>
> It is hard to tell an exact number since it increases over time. But
> considering scale of modern data centers, it is not uncommon to have more
> than 1k hypervisors in a single control plane. Would 5k - 10k clients be a
> realistic target?
> For number of ports, considering number of cores in a BM, maybe something
> around 100 lports per hypervisor sounds better.
>

I had a discussion with a group last week that was wanting to target 10k
hypervisors in a single OpenStack environment.

We should also not forget the vast numbers of environments that really only
need 10s to a few hundred hypervisors to work *really* well.  There are
other pain points for OpenStack at the higher end of scale targets.
OpenStack already works great for these 10s-100s enterprise private cloud
use cases.  With that context, HA is far more of an immediate concern for
me than the much higher scale targets.

-- 
Russell Bryant