Lisa Database Sizes

I have a few more questions that I don't find the answers to on the website.  

1.  Knowledge Base Size:
On thing I don't see covered on the website is a realistic feel for how big a database can get before it becomes unusable.

Let's pretend I wanted to build a census system for all the hobbits in the shire.  To continue the hobbit examples from the manual:

If there are millions of hobbits, and I want to store dozens of facts about them, will Lisa be able to handle this much data?

Or, more realistically, what if I have a few thousand entities, with a few dozen attributes on each?

2.  Knowledge Base Persistence:
Can the state of my Lisa session be made persistent in some way, or does it rely on saving a new lisp image to retain it?

3.  Performance:
I imagine that as the number of assertions and rules grow, the time required to find and trigger them increases.  Is there a known upper bound for database size before performance issues become too annoying?

Thanks,

-Brent


-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems?  Stop!  Download the new AJAX search engine that makes
searching your log files as easy as surfing the  web.  DOWNLOAD SPLUNK!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642