Deployment of Orben Forms utulises almost all Apache Server jvm memory

Hi.
Right now we found some issues with web server memory. After several deploys of forms in Orbeon, application performance become very slow, it’s almost impossible to open/reload page.
Only restart of Apache service helps. So far we increased jvm memory for Apache, but it didn’t solve problem.

Is there any sugegstion how to check what cause memory problem ?
Bellow is the initial pool of apache JVM

Edit: Today we made a test and we didn't change or deploy any form, we were just working with form runner and enter data using existing forms. Effect was the same - after some time performance become very slow and application didn't respond. We had to restart of Apache service.

Piotr,

Unless you have unusually gigantic forms, 2 GB of heap should be fine.

Is this server under load?

Could it be that, somehow, the JVM settings don't apply properly?

-Erik