Clue: If a related service provider (i.e. OT, PT) is the only one delivering specially designed instruction â it belongs in the top specially designed instruction box, not related service. Clue: Be specific about the service delivered like Specially Designed Instruction (SDI) above.
In Java, the default and maximum heap size are allocated based on this â ergonomics algorithm. Heap sizes. Initial heap size of 1/64 of physical memory up to 1Gbyte. Maximum heap size of 1/4 of physical memory up to 1Gbyte.
Xms - the minimum size of the heap. Xmx - the maximum size of the heap. -XX:MaxPermSize - the maximum size of PermGen (this is not used in Java 8 and above) In case you need an advice regarding how much memory you should use please check this page for some examples of hardware specifications.