Reads/sec         (All except Summary)

The "Reads/sec" Histogram on all screens (except for the Summary) displays the 
average number of reads per second for a particular Sun MTP system.  The value
is based on a Sun MTP system's Update Interval set via the PreferencesDialog 
(from the Overview Screen) and the number of physical reads issued by a Sun MTP 
system within the last Update Interval.

                   #Physical Reads (issued since last update)
                 ----------------------------------------------
                                Update Interval
