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

    SMP_TICK_CNT sets the frequency of sanity timer checks by each
    CPU in a multiprocessing system.

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