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System Administration Commandsmpstat(1M)


NAME

 mpstat - report per-processor or per-processor-set statistics

SYNOPSIS

 /usr/bin/mpstat [-a] [ -p | -P set] [interval [ count] ]

DESCRIPTION

 

mpstat reports processor statistics in tabular form. Each row of the table represents the activity of one processor. The first table summarizes all activity since boot; each subsequent table summarizes activity for the preceding interval. All values are rates (events per second) unless otherwise noted.

During execution of this kernel status command, the "state" of the kernel can change. An example would be CPUs going online or offline. mpstat reports this as State change.

mpstat reports the following information:

CPU or SET
Without the -a option, mpstat reports CPU, the processor ID. With the -a option, mpstat reports SET, the processor set ID.
minf
minor faults
mjf
major faults
xcal
inter-processor cross-calls
intr
interrupts
ithr
interrupts as threads (not counting clock interrupt)
csw
context switches
icsw
involuntary context switches
migr
thread migrations (to another processor)
smtx
spins on mutexes (lock not acquired on first try)
srw
spins on readers/writer locks (lock not acquired on first try)
syscl
system calls
usr
percent user time
sys
percent system time
wt
percent wait time
idl
percent idle time

With the -a option, mpstat also reports:

sze
number of processors in the set

With the -p option, mpstat also reports:

set
processor set membership of the CPU

OPTIONS

 

The following options are supported:

-a
Aggregate output by processor set. Sort the output by set. The default output is sorted by CPU number.
-p
Report processor set membership of each CPU. Sort the output by set. The default output is sorted by CPU number.
-P set
Display only those processors in the specified set.
interval
Report once each interval seconds.
count
Only print count reports.

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
AvailabilitySUNWcsu

SEE ALSO

 

sar(1), iostat(1M), sar(1M), vmstat(1M), attributes(5)

NOTES

 

The sum of CPU utilization might vary slightly from 100 because of rounding errors in the production of a percentage figure.


SunOS 5.9Go To TopLast Changed 25 Oct 2001

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.