Decreasing the value of this parameter tends to reduce the speed
    with which working set limits are increased when the need arises.
    Normally, you should keep this parameter at a high value because
    a rapid increase in limit is often critical to performance.

    WSINC specifies the number of pagelets by which the limit of a
    working set is automatically increased at each adjustment interval
    (which is quantum end). At a setting of 150, for example, the
    system increases the limit of a working set by 150 pagelets each
    time an increase is required.

    A value of 0 for WSINC disables the automatic adjustment of
    working set limits for all processes. Limits stay at their base
    values. You can disable the automatic adjustment of working
    set limits on a per-process basis by using the DCL command SET
    WORKING_SET.

    WSINC has the AUTOGEN, DYNAMIC, and MAJOR attributes.