/sys$common/syshlp/helplib.hlb Sys Parameters, AFFINITY_TIME  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    AFFINITY_TIME controls the breaking of implicit affinity. The
    value indicates how long a process remains on the compute queue.

    This special parameter is used by Compaq and is subject to
    change. Do not change this parameter unless Compaq recommends
    that you do so.