http://java.sun.com/docs/hotspot/VMOptions.html

-Xms:
	Sets the initial size of the heap. 

-Xmx:
	Sets the maximum size of the heap.

-Xmn:
 	Set the size of the young generation (available beginning in J2SE 1.4.0). 

-XX:LargePageSizeInBytes:
	Sets the large page size used for the Java heap. Set to 2m when running 32-bit
	JVM on Solaris 10 x86 with AMD64 CPUs. Solaris Only. 
	Defaults (SPARC: 8m, x86: 4m, x86_64: 2m)

-Xbatch:
	Disables background compilation.

-Xss:	
	Sets the Java thread stack size.