Here's what I did and what little I came up with: http://stufftohelpyouout.blogspot.com/2011/05/diagnosing-webappportlet-hot-deploy.html
I'm definitely not an expert at diagnosing leaks, so if you have any recommendations/comments, please let me know. I unfortunately started off just thinking I could tune JVM settings, not just by bumping up permgen but by adding things like: -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled But, I was (really) wrong as you can see in the post, along with the various tools used to try to identify what was causing the issue(s). It doesn't seem like determining exactly what is leaking memory (at least in the case of permgen and hot-redeploys/hot-deploys) is a whole lot easier than it was years ago, unless I'm doing something wrong, which I most likely am. Thanks in advance for any feedback! Gary
