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mpstat is a computer command-line software used in Unix-type operating systems to report (on the screen) processor-related statistics. It is used in computer monitoring in order to diagnose problems or to build statistics about a computer's CPU usage.
The mpstat command writes to standard output activities for each available processor.
The mpstat command can be used both on SMP and UP machines, but in the latter, only global average activities will be printed.
$ mpstat <interval> <count>
Interval is the time in seconds between printing out a line of statistics. Count is the number of lines of output you want.
Note that the first line of output from mpstat (like iostat, vmstat, etc.) contains averages since system boot. The subsequent lines will show current values.
Different examples of output under different operating systems:
under Linux kernel 4.14 on a two CPU machine:
Linux 4.14.24.mptcp (hostname) 05/23/2018 _x86_64_ (2 CPU)03:51:19 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle03:51:20 PM all 2.51 0.00 2.01 0.00 0.00 0.00 0.00 0.00 0.00 95.4803:51:21 PM all 2.53 0.00 2.02 0.00 0.00 0.00 0.00 0.00 0.00 95.45under Linux kernel 2.4:
$ mpstat Linux 2.4.21-32.ELsmp (linux00) 07/04/0710:26:54 CPU %user%nice%system%iowait%irq%soft%idleintr/s 10:26:54 all 0.07 0.00 0.16 8.48 0.00 0.09 91.18 165.49under Solaris 11:
$ mpstat CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 0 329 121 169 6 0 0 0 406 0 1 0 98under AIX 6:
$ mpstat11System configuration: lcpu=8 ent=1.0 mode=Uncappedcpu min maj mpc int cs ics rq mig lpa sysc us sy wa id pc %ec lcs 0 8 0 0 182 336 102 0 0 100 1434 38 51 0 12 0.02 1.8 185 1 0 0 0 11 5 5 0 0 - 0 0 19 0 81 0.00 0.1 12 2 0 0 0 1 0 0 0 0 - 0 0 42 0 58 0.00 0.0 0 3 0 0 0 1 0 0 0 0 - 0 0 43 0 57 0.00 0.0 0 4 0 0 0 1 0 0 0 0 - 0 0 45 0 55 0.00 0.0 0 5 0 0 0 1 0 0 0 0 - 0 0 44 0 56 0.00 0.0 0 6 0 0 0 1 0 0 0 0 - 0 0 2 0 98 0.00 0.0 0 7 0 0 0 53 5 5 0 0 - 0 0 66 0 34 0.00 0.2 54 U - - - - - - - - - - - - 0 99 0.99 99.0 -ALL 8 0 0 251 346 112 0 0 100 1434 0 0 0 99 0.02 2.0 251BogoMips is a crude measurement of CPU speed made by the Linux kernel when it boots to calibrate an internal busy-loop. An often-quoted definition of the term is "the number of million times per second a processor can do absolutely nothing".
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Unix is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors including University of California, Berkeley (BSD), Microsoft (Xenix), Sun Microsystems (SunOS/Solaris), HP/HPE (HP-UX), and IBM (AIX).
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