svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
sar(1)
sar(1) User Commands sar(1)
NAME
sar - system activity reporter
SYNOPSIS
sar [-aAbcdgkmpqruvwy] [-o filename] t [n]
sar [-aAbcdgkmpqruvwy] [-e time] [-f filename] [-i sec]
[-s time]
DESCRIPTION
In the first instance, the sar utility samples cumulative activity
counters in the operating system at n intervals of t seconds, where t
should be 5 or greater. If t is specified with more than one option,
all headers are printed together and the output can be difficult to
read. (If the sampling interval is less than 5, the activity of sar it‐
self can affect the sample.) If the -o option is specified, it saves
the samples in filename in binary format. The default value of n is 1.
In the second instance, no sampling interval is specified. sar extracts
data from a previously recorded filename, either the one specified by
the -f option or, by default, the standard system activity daily data
file /var/adm/sa/sadd for the current day dd. The starting and ending
times of the report can be bounded using the -e and -s arguments with
time specified in the form hh[:mm[:ss]]. The -i option selects records
at sec second intervals. Otherwise, all intervals found in the data
file are reported.
OPTIONS
The following options modify the subsets of information reported by
sar.
-a
Reports use of file access system routines: iget/s, namei/s,
dirblk/s
-A
Reports all data. Equivalent to -abcdgkmpqruvwy.
-b
Reports buffer activity:
bread/s, bwrit/s
transfers per second of data between system buffers and disk or
other block devices.
lread/s, lwrit/s
accesses of system buffers.
%rcache, %wcache
cache hit ratios, that is, (1−bread/lread) as a percentage.
pread/s, pwrit/s
transfers using raw (physical) device mechanism.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-c
Reports system calls:
scall/s
system calls of all types.
sread/s, swrit/s, fork/s, exec/s
specific system calls.
rchar/s, wchar/s
characters transferred by read and write system calls. No in‐
coming or outgoing exec(2) and fork(2) calls are reported.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-d
Reports activity for each block device (for example, disk or tape
drive) with the exception of XDC disks and tape drives. When data
is displayed, the device specification dsk- is generally used to
represent a disk drive. The device specification used to represent
a tape drive is machine dependent. The activity data reported is:
%busy, avque
portion of time device was busy servicing a transfer request,
average number of requests outstanding during that time.
read/s, write/s, blks/s
number of read/write transfers from or to device, number of
bytes transferred in 512-byte units.
avwait
average wait time in milliseconds.
avserv
average service time in milliseconds.
For more general system statistics, use sstore(1), iostat(8),
sar(8), or vmstat(8).
-e time
Selects data up to time. Default is 18:00.
-f filename
Uses filename as the data source for sar. Default is the current
daily data file /var/adm/sa/sadd.
-g
Reports paging activities:
pgout/s
page-out requests per second.
ppgout/s
pages paged-out per second.
pgfree/s
pages per second placed on the free list by the page stealing
daemon.
pgscan/s
pages per second scanned by the page stealing daemon.
%ufs_ipf
the percentage of UFS inodes taken off the freelist by iget
which had reusable pages associated with them. These pages are
flushed and cannot be reclaimed by processes. Thus, this is the
percentage of igets with page flushes.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-i sec
Selects data at intervals as close as possible to sec seconds.
-k
Reports kernel memory allocation (KMA) activities:
sml_mem, alloc, fail
information about the memory pool reserving and allocating
space for small requests: the amount of memory in bytes KMA has
for the small pool, the number of bytes allocated to satisfy
requests for small amounts of memory, and the number of re‐
quests for small amounts of memory that were not satisfied
(failed).
lg_mem, alloc, fail
information for the large memory pool (analogous to the infor‐
mation for the small memory pool).
ovsz_alloc, fail
the amount of memory allocated for oversize requests and the
number of oversize requests which could not be satisfied (be‐
cause oversized memory is allocated dynamically, there is not a
pool).
-m
Reports message and semaphore activities:
msg/s, sema/s primitives per second.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-o filename
Saves samples in file, filename, in binary format.
-p
Reports paging activities:
atch/s
page faults per second that are satisfied by reclaiming a page
currently in memory (attaches per second).
pgin/s
page-in requests per second.
ppgin/s
pages paged-in per second.
pflt/s
page faults from protection errors per second (illegal access
to page) or "copy-on-writes".
vflt/s
address translation page faults per second (valid page not in
memory).
slock/s
faults per second caused by software lock requests requiring
physical I/O.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-q
Reports average queue length while occupied, and percent of time
occupied:
runq-sz, %runocc
Run queue of kernel threads in memory and runnable
swpq-sz, %swpocc
Swap queue of processes
-r
Reports unused memory pages and disk blocks:
freemem
average pages available to user processes.
freeswap
disk blocks available for page swapping.
-s time
Selects data later than time in the form hh[:mm]. Default is 08:00.
-u
Reports CPU utilization (the default):
%usr, %sys, %wio, %idle
portion of time running in user mode, running in system mode,
idle with some process waiting for block, and otherwise idle.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-v
Reports status of process, i-node, file tables:
proc-sz, inod-sz, file-sz, lock-sz
entries/size for each table, evaluated once at sampling point.
ov
overflows that occur between sampling points for each table.
-w
Reports system swapping and switching activity:
swpin/s, swpot/s, bswin/s, bswot/s
number of transfers and number of 512-byte units transferred
for swapins and swapouts (including initial loading of some
programs).
pswch/s
process switches.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
-y
Reports TTY device activity:
rawch/s, canch/s, outch/s
input character rate, input character rate processed by canon,
output character rate.
rcvin/s, xmtin/s, mdmin/s
receive, transmit and modem interrupt rates.
If run in a non-global zone and the pools facility is active, these
values reflect activity on the processors of the processor set of
the pool to which the zone is bound.
EXAMPLES
Example 1 Viewing System Activity
The following example displays today's CPU activity so far:
example% sar
Example 2 Watching System Activity Evolve
To watch CPU activity evolve for 10 minutes and save data:
example% sar -o temp 60 10
Example 3 Reviewing Disk and Tape Activity
To later review disk and tape activity from that period:
example% sar -d -f temp
FILES
/var/adm/sa/sadd
daily data file, where dd are digits representing the day of the
month
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/accounting/legacy-accounting
SEE ALSO
sstore(1), exec(2), fork(2), attributes(7), iostat(8), sar(8),
sstored(8), vmstat(8)
NOTES
The sum of CPU utilization might vary slightly from 100 because of
rounding errors in the production of a percentage figure.
CPU utilization may be inaccurate (e.g. > 100%) when the number of cpus
changes. For example, as part of the pset used by a zone.
Starting in the Oracle Solaris 11.4 release, the StatsStore is provided
to record a wider array of statistics than sar and to view them in more
ways, including the System Web Interface. See the Using Oracle Solaris
11.4 StatsStore and System Web Interface book for more information.
Oracle Solaris 11.4 10 Mar 2021 sar(1)