On Thu, Mar 10, 2016 at 05:20:06PM -0800, Han Zhou wrote:
> On Thu, Mar 10, 2016 at 4:01 PM, Ben Pfaff <[email protected]> wrote:
> >
> > Beyond supporting this usage model, the basic requirements for the OVN
> > use case are:
> >
> >     - Size: 20 MB to 100 MB of data (estimated database size to hold
> >       data for our target scale of 1,000 hypervisors and 20,000
> >       logical ports).
> >
> >     - Scale: The northbound database has only a single-digit number of
> >       clients.  Each hypervisor is a client to the southbound
> >       database, so about 1,000 clients for our target scale of 1,000
> >       hypervisors.
> >
> 
> Ben, is there any reason we limit the scale to 1,000 hypervisors? OVN seems
> have much more potential than that based on current tests, even with ovsdb.
> As for ports, considering container use cases, there can be more than
> 20,000 even for 1,000 hypervisors.

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?

Can you tell me about what you want to scale to?

> >     - OVSDB.  If we choose to use OVSDB, we'll have to add
> >       high-availability support.  Also, the table doesn't mention
> >       scaling, since it's hard to compare objectively, but the OVSDB
> >       server currently doesn't scale well to the 1000 clients required
> >       for the southbound database, although Andy has started working
> >       on that.
> 
> That's not true :). With probe disabled, in our scale testing OVSDB server
> is not yet the bottleneck with 1000 clients connected to southbound DB.

Wow.
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