GWT dev mode performance problems?

Question

I'm working on a small GWT project in Intellij using their built-in support. Dev mode functions, but the performance is really spotty, and I can only reload the app a handful of times before getting OutOfMemoryError (using -Xmx512M).

What should I be able to expect out of dev mode? Do others experience consistent reload times and long running processes?

I'm running GWT 2.2 with IDEA 10.0.3. My app is small, but I do include several other modules like Activity, Place, Resources, Guava Collect + Base, UiBinder, Gin Inject, etc. I believe the performance problems started before many of these dependencies were added, though.

Thanks!

Answer 1

You can try to increase PermGen memory size via: -XX:MaxPermSize=256m. It should help. I had the same problem, analyzed what's becoming exhausted with Visual VM and it turned out that PermGen was the problem. Of course -Xmx also helps.