[rules-users] High Performance Rules Environment

[Robert Mertens]

I would be interested in any feedback from users who have used / are using
the JBoss Rules engine in a high performance environment.  

In order to justify the use of JBoss Rules / Drools, I need to be able to
reference implementations that are using this rule engine in a production
environment.  

The BRMS components that form part of release 4.0 allow it to be evaluated
alongside Ilog Rules and Blaze Advisor; however, I really need some case
studies that detail the numbers of facts and rules that are in production
use, and any related stability issues.  

To date, I have come across the following links :

http://legacy.drools.codehaus.org/Testimonies 
http://lists.jboss.org/pipermail/rules-users/2007-July/002097.html
http://geekswithblogs.net/cyoung/articles/54022.aspx - Microsoft's Rule
Engine Scalability Results - A comparison with Jess and Drools

Does anybody know of any links to case studies, or performance /scalability
tests?

Thanks