The stack size in KB used for the Java stack. This property is synonymous to the StackSize property.
Each Java thread has two stacks: one for Java code and one for C code. The -Xss option sets the maximum stack size that can be used by C code in a thread. Every thread that is spawned by the JVM during the execution of the program has this value as its C stack size.
IJvmOptions Interface | Codemesh.JuggerNET Namespace