mpstat(1M)

NAME

     mpstat - report per-processor or  per-processor-set  statis-
     tics

SYNOPSIS

     /usr/bin/mpstat [-a] [-p | -P set]  [interval  [ count]]

DESCRIPTION

     mpstat reports processor statistics in  tabular  form.  Each
     row  of  the table represents the activity of one processor.
     The first table summarizes all  activity  since  boot;  each
     subsequent  table  summarizes  activity  for  the  preceding
     interval. All values are rates (events  per  second)  unless
     otherwise noted.

     During execution of this kernel status command, the  "state"
     of  the  kernel  can  change. An example would be CPUs going
     online or offline. mpstat reports this as State change.

     mpstat reports the following information:

     CPU or SET
           Without the -a option, mpstat reports CPU, the proces-
           sor  ID.  With  the -a option, mpstat reports SET, the
           processor set ID.

     minf  minor faults

     mjf   major faults

     xcal  inter-processor cross-calls

     intr  interrupts

     ithr  interrupts as threads (not counting clock interrupt)

     csw   context switches

     icsw  involuntary context switches

     migr  thread migrations (to another processor)

     smtx  spins on mutexes (lock not acquired on first try)

     srw   spins on readers/writer locks (lock  not  acquired  on
           first try)

     syscl system calls

     usr   percent user time

     sys   percent system time
     wt    percent wait time

     idl   percent idle time

     With the -a option, mpstat also reports:

          sze   number of processors in the set

     With the -p option, mpstat also reports:

     set   processor set membership of the CPU

OPTIONS

     The following options are supported:

     -a    Aggregate output by processor set. Sort the output  by
           set. The default output is sorted by CPU number.

     -p    Report processor set membership of each CPU. Sort  the
           output  by  set.  The  default output is sorted by CPU
           number.

     -P set
           Display only those processors in the specified set.

     interval
           Report once each interval seconds.

     count Only print count reports.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|

SEE ALSO

     sar(1), iostat(1M), sar(1M), vmstat(1M), attributes(5)

NOTES

     The sum of CPU utilization  might  vary  slightly  from  100
     because of rounding errors in the production of a percentage
     figure.