This  directory  contains  a  program,  BUSUSE,  written  at  the
     Washington  University  School of Medicine to measure the disk IO load
     on your VAX.  It is a direct decendant of an  earlier  program  called
     MBAUSE.   It  generates a monitor like display of the activity on each
     disk drive and on each MASSbus adapter.  Included in the  display  are
     the instantaneous QIO rates to each drive, a long term average of each
     drive QIO rate, the percentage of time each drive is busy, the average
     length  of  each  drive wait queue, the average length of each drive's
     ACP queue, the percentage of time each MBA is busy,  and  the  average
     channel wait queue length for each MBA.

          A command file is included to build the  program.   Since  BUSUSE
     has  its  fingers  in  the  executive,  it will have to be rebuilt for
     version 4 of VMS.  In fact, if you don't rebuild BUSUSE each time  you
     move  to  a new major release of VMS, then it will probably crash your
     system.
        Richard F. Wrenn
        Washington University School of Medicine
        Department of Biological Chemistry
        660 S. Euclid
        St. Louis, MO, 63110