'\" te
.\"  Copyright 1989 AT&T Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved
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.TH sar 1M "20 Aug 2004" "SunOS 5.11" "System Administration Commands"
.SH NAME
sar, sa1, sa2, sadc \- system activity report package
.SH SYNOPSIS
.LP
.nf
\fB/usr/lib/sa/sadc\fR [\fIt\fR \fIn\fR] [\fIofile\fR]
.fi

.LP
.nf
\fB/usr/lib/sa/sa1\fR [\fIt\fR \fIn\fR]
.fi

.LP
.nf
\fB/usr/lib/sa/sa2\fR [\fB-aAbcdgkmpqruvwy\fR] [\fB-e\fR \fItime\fR] [\fB-f\fR \fIfilename\fR] 
     [\fB-i\fR \fIsec\fR] [\fB-s\fR \fItime\fR]
.fi

.SH DESCRIPTION
.sp
.LP
System activity data can be accessed at the special request of a user (see
\fBsar\fR(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 \fBCPU\fR utilization, buffer
usage, disk and tape \fBI/O\fR activity, \fBTTY\fR device activity, switching
and system-call activity, file-access, queue activity, inter-process
communications, and paging. For more general system statistics, use
\fBiostat\fR(1M), \fBsar\fR(1), or \fBvmstat\fR(1M).
.sp
.LP
\fBsadc\fR and two shell procedures, \fBsa1\fR and \fBsa2\fR, are used to
sample, save, and process this data.
.sp
.LP
\fBsadc\fR, the data collector, samples system data \fIn\fR times, with an
interval of \fIt\fR seconds between samples, and writes in binary format to
\fIofile\fR or to standard output. The sampling interval \fIt\fR should be
greater than 5 seconds; otherwise, the activity of \fBsadc\fR itself may affect
the sample. If \fIt\fR and \fIn\fR 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 \fBsvc:/system/sar:default\fR service writes
the restart mark to the daily data file using the command entry:
.sp
.in +2
.nf
su sys -c "/usr/lib/sa/sadc /var/adm/sa/sa\&'date +%d\&'"
.fi
.in -2
.sp

.sp
.LP
The shell script \fBsa1\fR, a variant of \fBsadc\fR, is used to collect and
store data in the binary file \fB/var/adm/sa/sa\fR\fIdd,\fR where \fBdd\fR is
the current day. The arguments \fIt\fR and \fIn\fR cause records to be written
\fIn\fR times at an interval of \fIt\fR seconds, or once if omitted. The
following entries in \fB/var/spool/cron/crontabs/sys\fR will produce records
every 20 minutes during working hours and hourly otherwise:
.sp
.in +2
.nf
0 * * * 0-6 /usr/lib/sa/sa1
20,40 8\(mi17 * * 1\(mi5 /usr/lib/sa/sa1
.fi
.in -2
.sp

.sp
.LP
See \fBcrontab\fR(1) for details.
.sp
.LP
The shell script \fBsa2\fR, a variant of \fBsar\fR, writes a daily report in
the file \fB/var/adm/sa/sar\fR\fIdd.\fR See the \fBOPTIONS\fR section in
\fBsar\fR(1) for an explanation of the various options. The following entry in
\fB/var/spool/cron/crontabs/sys\fR will report important activities hourly
during the working day:
.sp
.in +2
.nf
5 18 * * 1\(mi5 /usr/lib/sa/sa2 \fB-s\fR 8:00 \fB-e\fR 18:01 \fB-i\fR 1200 \fB-A\fR
.fi
.in -2
.sp

.SH FILES
.sp
.ne 2
.mk
.na
\fB\fB/tmp/sa.adrfl\fR\fR
.ad
.sp .6
.RS 4n
address file
.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/adm/sa/sa\fR\fBdd\fR\fR
.ad
.sp .6
.RS 4n
Daily data file
.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/adm/sa/sar\fR\fBdd\fR\fR
.ad
.sp .6
.RS 4n
Daily report file
.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/spool/cron/crontabs/sys\fR\fR
.ad
.sp .6
.RS 4n
 
.RE

.SH SEE ALSO
.sp
.LP
\fBcrontab\fR(1), \fBsag\fR(1), \fBsar\fR(1), \fBsvcs\fR(1), \fBtimex\fR(1),
\fBiostat\fR(1M), \fBsvcadm\fR(1M), \fBvmstat\fR(1M), \fBattributes\fR(5),
\fBsmf\fR(5)
.sp
.LP
\fI\fR
.SH NOTES
.sp
.LP
The \fBsar\fR service is managed by the service management facility,
\fBsmf\fR(5), under the service identifier:
.sp
.in +2
.nf
svc:/system/sar
.fi
.in -2
.sp

.sp
.LP
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using \fBsvcadm\fR(1M). The service's
status can be queried using the \fBsvcs\fR(1) command.