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.
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
intr/s
The ALL keyword is equivalent to specifying all the keywords above and therefore all the interrupts statistics are displayed.
NODE
All the other fields are the same as those displayed with option -u (see below).
CPU
%usr
%nice
%sys
%iowait
%irq
%soft
%steal
%guest
%gnice
%idle
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.
mpstat -P ALL 2 5
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