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MPSTAT(1) | Linux User's Manual | MPSTAT(1) |
NAME¶
mpstat - Report processors related statistics.SYNOPSIS¶
mpstat [ -A ] [ -I { SUM | CPU | SCPU | ALL } ] [ -u ] [ -P { cpu [,...] | ON | ALL } ] [ -V ] [ 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.OPTIONS¶
- -A
- This option is equivalent to specifying -I ALL -u -P ALL
- -I { SUM | CPU | SCPU | ALL }
- Report interrupts statistics.
Processor number. The keyword all
indicates that statistics are calculated as averages among all
processors.
Show the total number of interrupts received
per second by the CPU or CPUs.
- -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:
Processor number. The keyword all
indicates that statistics are calculated as averages among all
processors.
Show the percentage of CPU utilization that
occurred while executing at the user level (application).
Show the percentage of CPU utilization that
occurred while executing at the user level with nice priority.
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.
Show the percentage of time that the CPU or
CPUs were idle during which the system had an outstanding disk I/O
request.
Show the percentage of time spent by the CPU
or CPUs to service hardware interrupts.
Show the percentage of time spent by the CPU
or CPUs to service software interrupts.
Show the percentage of time spent in
involuntary wait by the virtual CPU or CPUs while the hypervisor was servicing
another virtual processor.
Show the percentage of time spent by the CPU
or CPUs to run a virtual processor.
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_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 5Display five reports of global statistics
among all processors at two second intervals.
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)AUGUST 2011 | Linux |