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man mpstat
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Maintenance Commands mpstat(1M)
NAME
mpstat - report per-processor statistics
SYNOPSIS
/usr/bin/mpstat [ -p | -P set ] [ interval [ count ] ]
DESCRIPTION
mpstat reports per-processor statistics in tabular form.
Each row of the table represents the activity of one proces-
sor. 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 processor 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
SunOS 5.8 Last change: 25 Oct 2001 1
Maintenance Commands mpstat(1M)
For the -p option, mpstat also reports the following infor-
mation:
set processor set membership of the CPU
OPTIONS
The following options are supported:
-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 attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
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 5.8 Last change: 25 Oct 2001 |
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