mpstat

 

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 Maintenance Commands                                   mpstat(1M)
 
 
 


NAME
      mpstat - report per-processor statistics
 


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


DESCRIPTION
      mpstat reports per-processor  statistics  in  tabular  form.
      Each row of the table represents the activity of one proces-
      sor. 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   processor 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
 
 
 
 SunOS 5.8           Last change: 25 Oct 2001                    1
 
 
 
 
 
 
 Maintenance Commands                                   mpstat(1M)
 
 
 
      For the -p option, mpstat also reports the following  infor-
      mation:
 
      set   processor set membership of the CPU
 


OPTIONS
      The following options are supported:
 
      -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.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8           Last change: 25 Oct 2001                    2
 
 
 

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