How do you pass options such as -Xrs to the JVM when your Tomcat container is running in-process within a Web server?

I am not sure if it works on IIS, but this worked on iPlanet (solaris). There are a couple of "undocumented" properties for the workers.properties file. Here are a couple:

worker.jni.ms=300m

worker.jni.mx=640m

and most importantly...

worker.jni.java2opts=-Xrs

If you want to find more, try looking at the source for the nsapi_redirector and jni_connect.