Here is a presentation I put together about Java heaps and garbage collection to go into some more detail than just raising the heap size. I put in links to some great websites and blog posts that are fantastic reads if you are trying to tune your app’s garbage collector.
The best part though is the “wicked awesome” presentation tool Prezi. It is an infinitely zoomable moving twisting camera landscape thingy . . . its kinda hard to describe. But it makes PowerPoint look like two cups with a string between them. Just check it out.
You can view it fullscreen and Prezi lets you copy presentations and modify them. Here is the direct link to the presentation above if you want to copy it. You can download a self contained offline viewer of a presentation you own (or one you’ve copied).