Storage performance considerations

Use the RPTSTG(ON) option to generate a report about the amount of storage your application uses in various Language Environment storage classes (such as STACK, THREADSTACK, LIBSTACK, THREADHEAP, HEAP, HEAPPOOLS and BELOWHEAP). You can also use the report to determine your application's minimum storage requirements and the number of segments allocated and freed, and the manner in which heap pool cells are being used. You can use this information to tune your application to minimize the number of segments allocated and freed, and to increase the efficiency of the heap pools algorithm. Before putting your application into production, be sure to specify the RPTSTG(OFF) option so that no storage report is generated. RPTSTG(ON) can have a negative affect on the performance of your application, because as the application runs, statistics are kept on storage requests.