|
Hopefully, this page is exactly what you are looking for, but if not, you can always find further assistance on Unix/Linux Forum!
System Administration Commands vmstat(1M)
NAME
vmstat - report virtual memory statistics
SYNOPSIS
vmstat [-cipqsS] [disks] [ interval [count]]
DESCRIPTION
vmstat reports virtual memory statistics regarding kernel
thread, virtual memory, disk, trap, and CPU activity.
On MP (multi-processor) systems, vmstat averages the number
of CPUs into the output. For per-processor statistics, see
mpstat(1M).
vmstat only supports statistics for certain devices. For
more general system statistics, use sar(1), iostat(1M), or
sar(1M).
Without options, vmstat displays a one-line summary of the
virtual memory activity since the system was booted.
During execution of the kernel status command, the state of
the system can change. If relevant, a state change message
is included in the vmstat output, in one of the following
forms:
<<device added: sd0>>
<<device removed: sd0>>
<<processors added: 1, 3>>
<<processors removed: 1, 3>>
See System Administration Guide: Advanced Administration for
device naming conventions for disks.
OPTIONS
The following options are supported:
-c Report cache flushing statistics. This option is
obsolete, and no longer meaningful. This option
might be removed in a future version of Solaris.
-i Report the number of interrupts per device. count
and interval does not apply to the -i option.
-p Report paging activity in details. This option will
display the following, respectively:
SunOS 5.10 Last change: 20 Dec 2004 1
System Administration Commands vmstat(1M)
epi Executable page-ins.
epo Executable page-outs.
epf Executable page-frees.
api Anonymous page-ins.
apo Anonymous page-outs.
apf Anonymous page-frees.
fpi File system page-ins.
fpo File system page-outs.
fpf File system page-frees.
When executed in a zone and if the pools facility
is active, all of the above only report actitivity
on the processors in the processor set of the
zone's pool.
-q Suppress messages related to state changes.
-s Display the total number of various system events
since boot. count and interval does not apply to
the -s option.
SunOS 5.10 Last change: 20 Dec 2004 2
System Administration Commands vmstat(1M)
-S Report on swapping rather than paging activity.
This option will change two fields in vmstat's
``paging'' display: rather than the ``re'' and
``mf'' fields, vmstat will report ``si'' (swap-ins)
and ``so'' (swap-outs).
OPERANDS
The following operands are supported:
count Specifies the number of times that the
statistics are repeated. count does not
apply to the -i and -s options.
disks Specifies which disks are to be given prior-
ity in the output (only four disks fit on a
line). Common disk names are id, sd, xd, or
xy, followed by a number (for example, sd2,
xd0, and so forth).
interval Specifies the last number of seconds over
which vmstat summarizes activity. This
number of seconds repeats forever. interval
does not apply to the -i and -s options.
EXAMPLES
Example 1: Using vmstat
The following command displays a summary of what the system
is doing every five seconds.
example% vmstat 5
kthr memory page disk faults cpu
r b w swap free re mf pi p fr de sr s0 s1 s2 s3 in sy cs us sy id
0 0 0 11456 4120 1 41 19 1 3 0 2 0 4 0 0 48 112 130 4 14 82
0 0 1 10132 4280 0 4 44 0 0 0 0 0 23 0 0 211 230 144 3 35 62
0 0 1 10132 4616 0 0 20 0 0 0 0 0 19 0 0 150 172 146 3 33 64
0 0 1 10132 5292 0 0 9 0 0 0 0 0 21 0 0 165 105 130 1 21 78
1 1 1 10132 5496 0 0 5 0 0 0 0 0 23 0 0 183 92 134 1 20 79
1 0 1 10132 5564 0 0 25 0 0 0 0 0 18 0 0 131 231 116 4 34 62
1 0 1 10124 5412 0 0 37 0 0 0 0 0 22 0 0 166 179 118 1 33 67
1 0 1 10124 5236 0 0 24 0 0 0 0 0 14 0 0 109 243 113 4 56 39
^C
SunOS 5.10 Last change: 20 Dec 2004 3
System Administration Commands vmstat(1M)
example%
The fields of vmstat's display are
kthr Report the number of kernel threads in each
of the three following states:
r the number of kernel threads in run
queue
b the number of blocked kernel
threads that are waiting for
resources I/O, paging, and so forth
w the number of swapped out light-
weight processes (LWPs) that are
waiting for processing resources to
finish.
memory Report on usage of virtual and real memory.
swap available swap space (Kbytes)
free size of the free list (Kbytes)
page Report information about page faults and
paging activity. The information on each of
the following activities is given in units
per second.
re page reclaims - but see the -S
option for how this field is modi-
fied.
SunOS 5.10 Last change: 20 Dec 2004 4
System Administration Commands vmstat(1M)
mf minor faults - but see the -S
option for how this field is modi-
fied.
pi kilobytes paged in
po kilobytes paged out
fr kilobytes freed
de anticipated short-term memory
shortfall (Kbytes)
sr pages scanned by clock algorithm
When executed in a zone and if the pools
facility is active, all of the above (except
for "de") only report activity on the pro-
cessors in the processor set of the zone's
pool.
disk Report the number of disk operations per
second. There are slots for up to four
disks, labeled with a single letter and
number. The letter indicates the type of
disk (s = SCSI, i = IPI, and so forth); the
number is the logical unit number.
faults Report the trap/interrupt rates (per
second).
in interrupts
SunOS 5.10 Last change: 20 Dec 2004 5
System Administration Commands vmstat(1M)
sy system calls
cs CPU context switches
When executed in a zone and if the pools
facility is active, all of the above only
report actitivity on the processors in the
processor set of the zone's pool.
cpu Give a breakdown of percentage usage of CPU
time. On MP systems, this is an average
across all processors.
us user time
sy system time
id idle time
When executed in a zone and if the pools
facility is active, all of the above only
report actitivity on the processors in the
processor set of the zone's pool.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
| Interface Stability | See below. |
|_____________________________|_____________________________|
Invocation is evolving. Human readable output is unstable.
SunOS 5.10 Last change: 20 Dec 2004 6
System Administration Commands vmstat(1M)
SEE ALSO
sar(1), iostat(1M), mpstat(1M), sar(1M), attributes(5)
System Administration Guide: Basic Administration
System Administration Guide: Advanced Administration
NOTES
The sum of CPU utilization might vary slightly from 100
because of rounding errors in the production of a percentage
figure.
The -c option (Report cache flushing statistics) is not sup-
ported in this release.
SunOS 5.10 Last change: 20 Dec 2004 7
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:26:49 GMT 2007
|
Your favourite pages:
No pages logged yet... Top 10 most popular pages:
prstat man page (24546 hits)
(Solaris 10 11_06)
netcat man page (17695 hits)
(Suse Linux 10.1)
ssh-socks5-proxy-connect man page (13531 hits)
(Solaris 10 11_06)
signal man page (12551 hits)
(Suse Linux 10.1)
startproc man page (11991 hits)
(Suse Linux 10.1)
raidctl man page (11357 hits)
(Solaris 10 11_06)
adv_cap_autoneg man page (10286 hits)
(Solaris 10 11_06)
sqlite3 man page (9729 hits)
(openSUSE 10.2)
CPAN man page (8947 hits)
(Suse Linux 10.1)
BusyBox man page (7702 hits)
(Suse Linux 10.1)
|
Man Pages 
