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RedHat 9 (Linux i386) - man page for mpstat (redhat section 1)

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

NAME
       mpstat - Report processors related statistics.

SYNOPSIS
       mpstat [ -P { cpu | ALL } ] [ -V ] [ 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
       reported.   The mpstat command can be used both on SMP and UP machines, but in the latter,
       only global average activities will be printed.

       The interval parameter specifies the amount of time in seconds  between	each  report.	A
       value of 0 indicates that processors statistics are to be reported for the time since sys-
       tem 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  with-
       out the count parameter, the mpstat command generates reports continuously.

REPORTS
       The report generated by the mpstat command has the following format:

       CPU
	      Processor number. The keyword all indicates that statistics are calculated as aver-
	      ages among all processors.
       %user
	      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.
       %system
	      Show the percentage of CPU utilization that occurred while executing at the  system
	      level (kernel).
       %idle
	      Show the percentage of time that the CPU or CPUs were idle.
       intr/s
	      Show the total number of interrupts received per second by the CPU or CPUs.

OPTIONS
       -P cpu | 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  ALL  keyword
	      indicates that statistics are to be reported for all processors.

       -V     Print version number and usage then exit.

ENVIRONMENT
       The mpstat command takes into account the following environment variable:

       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 format (YYYY-MM-DD) instead.

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.

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

FILES
       /proc contains various files with system statistics.

AUTHOR
       Sebastien Godard <sebastien.godard@wanadoo.fr>

SEE ALSO
       sar(1), sadc(8), sa1(8), sa2(8), iostat(1), vmstat(8)

       http://perso.wanadoo.fr/sebastien.godard/

Linux					     MAY 2000					MPSTAT(1)


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