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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 ] [ -T ] [ -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, pro-
       cessor 0 being the first one.  Global average activities among all processors are also re-
       ported.   The  mpstat  command can be used on both 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  re-
       ported  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 pa-
       rameter is specified without the count parameter, the  mpstat  command  generates  reports
       continuously.

OPTIONS
       -A     This  option  is  equivalent  to specifying -n -u -I ALL.  This option also implies
              specifying -N ALL -P ALL unless these options are explicitly  set  on  the  command
              line.

       --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 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.

              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 sta-
              tistics are to be reported for all nodes.

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

              NODE   Logical NUMA node number. The keyword all indicates that statistics are cal-
                     culated 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 processors.  Offline processors are not displayed.

       -T     Display topology elements in the CPU report (see option -u  below).  The  following
              elements are displayed:

              CORE   Logical core number.

              SOCK   Logical socket number.

              NODE   Logical NUMA node number.

       -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 in-
                     terrupts.

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

              %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  pro-
                     cessor.

              %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
              By default statistics are displayed in color when the output is connected to a ter-
              minal.  Use this variable to change the settings. Possible values for this variable
              are never, always or auto (the latter is equivalent to the default settings).
              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=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 ig-
              nored 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 inter-
              vals.

       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 <at> orange.fr)

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

       https://github.com/sysstat/sysstat
       http://pagesperso-orange.fr/sebastien.godard/

Linux                                      AUGUST 2020                                  MPSTAT(1)

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