VMS Help Sys Parameters, PAPOOLINTERVAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specifies, in seconds, the interval at which the port driver
    checks available nonpaged pool after a pool allocation failure.

    This parameter trades faster response to pool allocation failures
    against increased polling overhead. Compaq recommends that you
    use the default value for this parameter.

    If CI or DSSI devices are not configured on your system, this
    parameter is ignored.

    PAPOOLLINTERVAL is a DYNAMIC parameter.