Returns system performance information about the local system.
    $GETRMI is an asynchronous system service and requires the
    $SYNCH service or another wait-state synchronous mechanism to
    guarantee that the required information is available. There is no
    synchronous wait form for this system service.

    For additional information about system service completion, see
    the Synchronize ($SYNCH) service.

    Format

      SYS$GETRMI  [efn] [,nullarg] [,nullarg] ,itmlst [,iosb]

                  [,astadr] [,astprm]

    C Prototype

      int sys$getrmi  (unsigned int efn, unsigned int nullarg,

                      unsigned int nullarg, void *itmlst, struct

                      _iosb *iosb, void (*astadr)(__unknown_params),

                      int astprm);