IRPCOUNTV establishes the upper limit to which IRPCOUNT can be
    automatically increased by the system.

    If this parameter is set too low, system performance can be
    adversely affected because IRPCOUNTV cannot be used for nonpaged
    pool requests.

    A physical memory penalty of 1 percent results for any unused
    growth space (1 longword for every 3 unused intermediate request
    packets).

    IRPCOUNTV has the GEN attribute.