Strange, but one thing is for certain, MMBase is quite thread hungry, so I think you should up the number of threads first (about 200 to 300).
We have already tried 'upping' the number of threads. This will make Tomcat 'hang' more rapidly. Really: maxProcessors="60" is the maximum Tomcat can handle in our configuration.
The point is that in my opinion the Multicast causes a huge peak in Tomcat's thread usage (and because of that: memory usage). It occurs quit frequently and normally Tomcat just keeps running but the Multicast is not delivered (everywhere) and the nodes in the live webapps are not updated.
If this still occurs you really have an OutOfMemory (not strange with editwizards), and not a thread problem.
That's not the case. The EditWizards run in a webapp of their own and have a lot of memory allocated.
---André -- ------------------------------------------------------------------>><<-- André van Toly http://www.toly.nl 06-27233562
