[erlang-questions] pg2 scale limits

[Mark Allen]

What has been the experience of folks with the practical upper bound of
process groups registered with the pg2 application?

I have an application where I need to track 10000 or so process groups
across a set of erlang nodes (2 R14B04 Erlang VMs running on top of 2
Debian VMs to start.)  Would that size of registry cause problems?

I read 
http://christophermeiklejohn.com/erlang/2013/06/03/erlang-pg2-failure-seman
tics.html and it was a great read - are there any other pitfalls about pg2
that I should be aware of?

I am planning to implement a "prototype" of this application using pg2 at
reasonably low scale, but I am open to other implementation suggestions or
applications (I looked at gproc too, but I'd rather stick with pg2 if
possible because it comes "out of the box"...)

Thanks.

Mark