BALSETCNT sets the number of balance set slots in the system page
    table. Each memory-resident working set requires one balance set
    slot.

    You can monitor the active system with the DCL command SHOW
    MEMORY or the MONITOR PROCESSES command of the Monitor utility to
    determine the actual maximum number of working sets in memory. If
    this number is significantly lower than the value of BALSETCNT,
    this parameter value could be lowered. If all balance set slots
    are being used, raise the value of BALSETCNT.

    Never set BALSETCNT to a value higher than 2 less than
    MAXPROCESSCNT. If physical memory is a significant system
    constraint, consider lowering this value even further. However,
    if your system runs with a number of processes nearly equal to
    MAXPROCESSCNT, lowering BALSETCNT forces swapping to occur, which
    can affect system performance.

    BALSETCNT is no longer a strict setting of the number of
    processes that might be resident in memory. The swapper tries
    to reduce the number of resident processes down to BALSETCNT.
    However, if the total number of active processes and processes
    that have disabled swapping exceeds BALSETCNT, the swapper does
    not force processes out of memory just to meet the BALSETCNT
    setting.

    BALSETCNT is an AUTOGEN, GEN, DYNAMIC, and MAJOR parameter.