I was able to get a full heap dump (before Garbage Collection) on my x86 machine. It weighs in at ~1.2gb. When I tried to run Garbage Collection, the UI was non responsive so I wasn't able to make it happen or grab it.
I was finally given the x64 machine to see if this resolves the problem. While it appears to have resolved the acute problem (no Java heap space errors yet), it does reach a point around 1.3 or 1.4gb of memory used where performance slows down significantly, with each query/test taking roughly 5-20x longer to complete that usual. This time, I was able to stop the test, close my projects, run garbage collection, and do a heap dump. It weighs in at 922mb.
I don't have an FTP to host these on, so I guess I will upload them to some cloud storage and PM you the links. If Eviware could host an FTP on which users could upload heap dumps, that could be helpful and would be appreciated =]
