Heap pools modes of operation

Heap pools can be operated in two modes:

ON This mode is selected by specifying the runtime option HEAPPOOLS(ON). This mode will avoid contention during storage allocation and release. This mode uses less storage.

ALIGN This mode is selected by specifying HEAPPOOLS(ALIGN). In addition to avoiding contention during storage allocation and release, the goal of this mode is to reduce cache contention when two adjacent cells are being updated at the same time. Only multi-threaded applications will gain additional benefits from using ALIGN mode instead of ON mode. This mode uses more storage.