Storage statistics for AMODE 64 applications

The following runtime options control storage allocation:
  • HEAP64
  • HEAPPOOLS
  • HEAPPOOLS64
  • IOHEAP64
  • LIBHEAP64
  • STACK64
  • THREADSTACK64

Ensure that these options are tuned appropriately to avoid performance problems. Tuning tips are provided in the z/OS V2R1.0 Language Environment Programming Guide for 64-bit Virtual Addressing Mode. For an example and complete description of the storage report, see z/OS Language Environment Debugging Guide.