Scott TH Hopper commented on May 21, 2009

Usage information

While the goal especially in D8 and above is to not use this parameter. When on non-AIX platforms, by decreasing shared memory, private memory can increase, as on other platforms the process contains the shared memory. So limiting shared memory increases allows for greater private process size. Sometimes this may be desirable. On AIX, it simply reduces how much shared memory can be used.

In general, Domino will tend to consume more Shared memory than private.