gproc global will create a bootleneck in my app?

[Pablo Platt]

Hi,

I'm using gproc to handle IM sessions on one node and it works great.
I want to use it with gen_leader to extend to several nodes.
Saving a global name will be slower because that leader has to coordinate 
uniqueness.
Will it affect reads as well?
If one gen_server is responsible for everything, does writing a global name 
might block all reads?

What is a reasonable number of unique names and non-unique properties I can save 
with gproc?
Am I only limited by RAM?

Thanks