BALSETCNT

   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.