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MPSTAT(1)                                              Linux User's Manual                                             MPSTAT(1)

NAME
       mpstat - Report processors related statistics.

SYNOPSIS
       mpstat  [  -A ] [ --dec={ 0 | 1 | 2 } ] [ -n ] [ -u ] [ -V ] [ -I { keyword [,...] | ALL } ] [ -N { node_list | ALL } ] [
       -o JSON ] [ -P { cpu_list | 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 ma

       chines, but in the latter, only global average activities will be printed. If no activity has been selected, then the de

       fault 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 parame

       ter can be specified in conjunction with the interval parameter if this one is not set to zero. The value of count deter

       mines 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 -n -u -I ALL -N ALL -P ALL

       --dec={ 0 | 1 | 2 }
              Specify the number of decimal places to use (0 to 2, default value is 2).

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

              Possible keywords are CPU, SCPU, and SUM.

              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.

              With the SUM keyword, the mpstat command reports the total number of interrupts per processor.  The following val

              ues are displayed:

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

                     sors.

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

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

       -N { node_list | ALL }
              Indicate the NUMA nodes for which statistics are to be reported.  node_list is a list of comma-separated values or
              range of values (e.g., 0,2,4-7,12-).  Note that node all is the global average among all nodes.  The  ALL  keyword
              indicates that statistics are to be reported for all nodes.

       -n     Report summary CPU statistics based on NUMA node placement. The following values are displayed:

              NODE
                     Node number. The keyword all indicates that statistics are calculated as averages among all nodes.

              All the other fields are the same as those displayed with option -u (see below).

       -o JSON
              Display the statistics in JSON (Javascript Object Notation) format.  JSON output field order is undefined, and new
              fields may be added in the future.

       -P { cpu_list | ALL }
              Indicate the processors for which statistics are to be reported.  cpu_list is a list of comma-separated values  or
              range  of  values  (e.g.,  0,2,4-7,12-).   Note  that processor 0 is the first processor, and processor all is the
              global average among all processors.  The ALL keyword indicates that statistics are to be reported for all proces

              sors.  Offline processors are not displayed.

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

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

                     sors.

              %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.

       -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).

              Note:  On  Debian  sysstems  the colors are displayed by default when output is connected to the terminal, even if
              this variable is not set (i.e. unset variable is treated as if it were set to auto).

              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-sepa

              rated list of capabilities that defaults to H=31;1:I=32;22:M=35;1:N=34;1:Z=34;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.  The timestamp will also be
              compliant with ISO 8601 format.

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.

FILES
       /proc contains various files with system statistics.

AUTHOR
       Sebastien Godard (sysstat  orange.fr)

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

       https://github.com/sysstat/sysstat

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

Linux                                                       JULY 2018                                                  MPSTAT(1)

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