mpstat(1M)                                                       mpstat(1M)

NAME
     mpstat - report multi-processor statistics

SYNOPSIS
     /usr/ucb/mpstat [interval] [count]

DESCRIPTION
     mpstat reports certain statistics kept about process, virtual memory,
     exception, and CPU activity. It provides a subset of the virtual
     memory information provided by vmstat, but expands the CPU utilization
     information to show the activity on each of the processors on the sys-
     tem. vmstat gives the composite CPU statistics for all processors on
     the system. mpstat reports in the first line a summary of the system
     activity since the system has been booted.

     If interval is specified, then successive lines are reported over the
     last interval seconds. For example, mpstat 5 will print what the sys-
     tem is doing every five seconds. This is a good choice for printing
     interval because some statistics are sampled every five seconds in the
     system. Watch the output for a while will to identify what statistics
     are sampled in what interval.

     If a count is given, the statistics are repeated count times.

     These format fields are available:

     procs     Information about numbers of processes in various states.

               r     In run queue.

               b     Blocked for resources (I/O or paging).

               w     Operable process or short sleeper (< 20 secs) but
                     swapped.

     memory    Information about the usage of virtual and real memory. Vir-
               tual pages are considered active if they belong to processes
               which are running or have run in the last 20 seconds. A page
               here is 1024 bytes.

               avm   Active virtual pages.

               fre   Size of the free list.












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mpstat(1M)                                                       mpstat(1M)

     page      Information about page faults and paging activity. These are
               averaged each five seconds, and given in units per second.

               pi    Pages paged in.

               po    Pages paged out.

               si    Pages swapped in.

               so    Pages swapped out.

     Cpu       Information about exceptions and interrupts. These are given
               in units per second. Breakdown of CPU activity (one set per
               CPU).

               int   Device interrupts fielded by this CPU.

               cint  Inter-CPU interrupts fielded by this CPU.

               fint  Floating point exceptions fielded by this CPU.

               syc   System calls per second.

               cs    Cpu context switch rate (switches/sec).

               id    Percentage of CPU time spent in idle or I/O wait mode.

               us    Percentage of CPU time spent in user mode.

               sy    Percentage of CPU time spent in system mode (other
                     than idle).

               io    Percentage of CPU time spent in I/O wait mode.

SEE ALSO
     vmstat(1M).


















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