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System Administration Commands sar(1M)
NAME
sar, sa1, sa2, sadc - system activity report package
SYNOPSIS
/usr/lib/sa/sadc [ t n] [ofile]
/usr/lib/sa/sa1 [ t n]
/usr/lib/sa/sa2 [-aAbcdgkmpqruvwy] [-e time] [-f filename]
[-i sec] [-s time]
DESCRIPTION
System activity data can be accessed at the special request
of a user (see sar(1)) and automatically, on a routine
basis, as described here. The operating system contains
several counters that are incremented as various system
actions occur. These include counters for CPU utilization,
buffer usage, disk and tape I/O activity, TTY device
activity, switching and system-call activity, file-access,
queue activity, inter-process communications, and paging.
For more general system statistics, use iostat(1M), sar(1),
or vmstat(1M).
sadc and two shell procedures, sa1 and sa2, are used to sam-
ple, save, and process this data.
sadc, the data collector, samples system data n times, with
an interval of t seconds between samples, and writes in
binary format to ofile or to standard output. The sampling
interval t should be greater than 5 seconds; otherwise, the
activity of sadc itself may affect the sample. If t and n
are omitted, a special record is written. This facility can
be used at system boot time, when booting to a
multi-user state, to mark the time at which the counters
restart from zero. For example, when accounting is enabled,
the svc:/system/sar:default service writes the restart mark
to the daily data file using the command entry:
su sys -c "/usr/lib/sa/sadc /var/adm/sa/sa'date +%d'"
The shell script sa1, a variant of sadc, is used to collect
and store data in the binary file /var/adm/sa/sadd, where dd
is the current day. The arguments t and n cause records to
be written n times at an interval of t seconds, or once if
omitted. The following entries in
/var/spool/cron/crontabs/sys will produce records every 20
minutes during working hours and hourly otherwise:
0 * * * 0-6 /usr/lib/sa/sa1
20,40 8-17 * * 1-5 /usr/lib/sa/sa1
SunOS 5.10 Last change: 20 Aug 2004 1
System Administration Commands sar(1M)
See crontab(1) for details.
The shell script sa2, a variant of sar, writes a daily
report in the file /var/adm/sa/sardd. See the OPTIONS sec-
tion in sar(1) for an explanation of the various options.
The following entry in /var/spool/cron/crontabs/sys will
report important activities hourly during the working day:
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A
FILES
/tmp/sa.adrfl address file
/var/adm/sa/sadd Daily data file
/var/adm/sa/sardd Daily report file
/var/spool/cron/crontabs/sys
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWaccu |
|_____________________________|_____________________________|
SEE ALSO
crontab(1), sag(1), sar(1), svcs(1), timex(1), iostat(1M),
svcadm(1M), vmstat(1M), attributes(5), smf(5)
System Administration Guide: Advanced Administration
NOTES
The sar service is managed by the service management facil-
ity, smf(5), under the service identifier:
svc:/system/sar
Administrative actions on this service, such as enabling,
disabling, or requesting restart, can be performed using
SunOS 5.10 Last change: 20 Aug 2004 2
System Administration Commands sar(1M)
svcadm(1M). The service's status can be queried using the
svcs(1) command.
SunOS 5.10 Last change: 20 Aug 2004 3
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:26:34 GMT 2007
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