sadc(1M)                                                    sadc(1M)


       NAME
             sadc, sa1, sa2 - system activity report package

       SYNOPSIS
             /usr/lib/sa/sadc [t n] [ofile]
             /usr/lib/sa/sa1 [t n]
             /usr/lib/sa/sa2 [-P processor_id[, . . . ] | ALL] [-ubdycwaqvmpgrkAR]
                   [-s time] [-e time] [-i sec]

       DESCRIPTION
             System activity data can be accessed at the special request of
             a user [see sar(1M)] 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.

             sadc and two shell procedures, sa1 and sa2, are used to
             sample, 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 is used at system
             boot time, when booting to a multiuser state, to mark the time
             at which the counters restart from zero.  For example, the
             /etc/init.d/perf file writes the restart mark to the daily
             data by the command entry:
                   su sys -c "$TFADMIN /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 produce records every 20 minutes
             during working hours and hourly otherwise:

                   0 * * * 0-6 $TFADMIN /usr/lib/sa/sa1
                   20,40 8-17 * * 1-5 $TFADMIN /usr/lib/sa/sa1




                           Copyright 1994 Novell, Inc.               Page 1

      sadc(1M)                                                    sadc(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.  The options are explained in
            sar(1M).  The following entry in /var/spool/cron/crontabs/sys
            reports important activities hourly during the working day:

              5 18 * * 1-5 $TFADMIN /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

      FILES
            /var/adm/sa/sadd
                           daily data file
            /var/adm/sa/sardd
                           daily report file

      REFERENCES
            crontab(1), sar(1M), timex(1)































                          Copyright 1994 Novell, Inc.               Page 2