[dagenix]

It doesn't sound like you understand how memory Management in Java works. In Java, you have a defined heap size. Java will claim memory in order to support that heap. If you are unhappy about how much memory it is using, you can change the heap size.

[jerven]

Or use ShenadoahGC ;) and it will uncommit heap not in use. Or wait for http://openjdk.java.net/jeps/8204089 to land. In any case vastly improving idle RSS consumption.