Provided by: sysstat_11.2.0-1_amd64 bug

NAME

       mpstat - Report processors related statistics.

SYNOPSIS

       mpstat [ -A ] [ -u ] [ -V ] [ -I { keyword [,...] | ALL } ] [ -P { cpu [,...] | ON | ALL }
       ] [ interval [ count ] ]

DESCRIPTION

       The mpstat command writes to standard output  activities  for  each  available  processor,
       processor  0 being the first one.  Global average activities among all processors are also
       reported.  The mpstat command can be used both on SMP and UP machines, but in the  latter,
       only global average activities will be printed. If no activity has been selected, then the
       default report is the CPU utilization report.

       The interval parameter specifies the amount of time in seconds  between  each  report.   A
       value  of  0  (or  no  parameters  at  all) indicates that processors statistics are to be
       reported for the time since system startup (boot).  The count parameter can  be  specified
       in  conjunction  with  the interval parameter if this one is not set to zero. The value of
       count determines the number of  reports  generated  at  interval  seconds  apart.  If  the
       interval  parameter is specified without the count parameter, the mpstat command generates
       reports continuously.

OPTIONS

       -A     This option is equivalent to specifying -u -I ALL -P ALL

       -I { keyword [,...] | ALL }
              Report interrupts statistics.

              Possible keywords are SUM, CPU and SCPU.

              With the SUM keyword, the mpstat command reports the total number of interrupts per
              processor.  The following values are displayed:

              CPU
                     Processor  number.  The keyword all indicates that statistics are calculated
                     as averages among all processors.

              intr/s
                     Show the total number of interrupts received per second by the CPU or CPUs.

              With the CPU keyword, the number of each individual interrupt received  per  second
              by  the  CPU  or CPUs is displayed. Interrupts are those listed in /proc/interrupts
              file.

              With the SCPU keyword, the number of each individual  software  interrupt  received
              per  second  by  the  CPU or CPUs is displayed. This option works only with kernels
              2.6.31 and later. Software interrupts are those listed in /proc/softirqs file.

              The ALL keyword is equivalent to specifying all the keywords  above  and  therefore
              all the interrupts statistics are displayed.

       -P { cpu [,...] | ON | ALL }
              Indicate  the processor number for which statistics are to be reported.  cpu is the
              processor number. Note that processor 0 is the first  processor.   The  ON  keyword
              indicates  that  statistics  are to be reported for every online processor, whereas
              the ALL keyword indicates that statistics are to be reported for all processors.

       -u     Report CPU utilization. The following values are displayed:

              CPU
                     Processor number. The keyword all indicates that statistics  are  calculated
                     as averages among all processors.

              %usr
                     Show  the percentage of CPU utilization that occurred while executing at the
                     user level (application).

              %nice
                     Show the percentage of CPU utilization that occurred while executing at  the
                     user level with nice priority.

              %sys
                     Show  the percentage of CPU utilization that occurred while executing at the
                     system level (kernel). Note that this does not include time spent  servicing
                     hardware and software interrupts.

              %iowait
                     Show  the percentage of time that the CPU or CPUs were idle during which the
                     system had an outstanding disk I/O request.

              %irq
                     Show the percentage of time spent by the CPU or  CPUs  to  service  hardware
                     interrupts.

              %soft
                     Show  the  percentage  of  time spent by the CPU or CPUs to service software
                     interrupts.

              %steal
                     Show the percentage of time spent in involuntary wait by the virtual CPU  or
                     CPUs while the hypervisor was servicing another virtual processor.

              %guest
                     Show  the  percentage  of  time  spent  by  the CPU or CPUs to run a virtual
                     processor.

              %gnice
                     Show the percentage of time spent by the CPU or CPUs to run a niced guest.

              %idle
                     Show the percentage of time that the CPU or CPUs were idle  and  the  system
                     did not have an outstanding disk I/O request.

              Note:  On  SMP  machines  a  processor  that does not have any activity at all is a
              disabled (offline) processor.

       -V     Print version number then exit.

ENVIRONMENT

       The mpstat command takes into account the following environment variable:

       S_COLORS
              When this variable is set, display statistics in color on the  terminal.   Possible
              values for this variable are never, always or auto (the latter is the default).

              Please note that the color (being red, yellow, or some other color) used to display
              a value is not indicative of any kind of issue simply because of the color. It only
              indicates different ranges of values.

       S_COLORS_SGR
              Specify the colors and other attributes used to display statistics on the terminal.
              Its  value  is  a  colon-separated  list   of   capabilities   that   defaults   to
              H=31;1:I=32;22:M=34;1:N=33;1:Z=33;22.  Supported capabilities are:

              H=     SGR  (Select Graphic Rendition) substring for percentage values greater than
                     or equal to 75%.

              I=     SGR substring for CPU number.

              M=     SGR substring for percentage values in the range from 50% to 75%.

              N=     SGR substring for non-zero statistics values.

              Z=     SGR substring for zero values.

       S_TIME_FORMAT
              If this variable exists and its value is  ISO  then  the  current  locale  will  be
              ignored  when  printing the date in the report header.  The mpstat command will use
              the ISO 8601 format (YYYY-MM-DD) instead.

EXAMPLES

       mpstat 2 5
              Display five reports of global  statistics  among  all  processors  at  two  second
              intervals.

       mpstat -P ALL 2 5
              Display five reports of statistics for all processors at two second intervals.

BUGS

       /proc filesystem must be mounted for the mpstat command to work.

       Only a few activities are given by the Linux kernel for each processor.

FILES

       /proc contains various files with system statistics.

AUTHOR

       Sebastien Godard (sysstat <at> orange.fr)

SEE ALSO

       sar(1), pidstat(1), iostat(1), vmstat(8)

       http://pagesperso-orange.fr/sebastien.godard/