Commands Reference, Volume 5

sadc Command

Purpose

Provides a system data collector report.

Syntax

/usr/lib/sa/sadc [ Interval Number ] [ Outfile ]

/usr/lib/sa/sa1 [ Interval Number ]

/usr/lib/sa/sa2

The sadc command, the data collector, samples system data a specified number of times (Number) at a specified interval measured in seconds (Interval). It writes in binary format to the specified outfile or to the standard output. When both Interval and Number are not specified, a dummy record, which is used at system startup to mark the time when the counter restarts from 0, will be written. The sadc command is intended to be used as a backend to the sar command.

The operating system contains a number of counters that are incremented as various system actions occur. The various system actions include:

System unit utilization counters
Buffer usage counters
Disk and tape I/O activity counters
Tty device activity counters
Switching and subroutine counters
File access counters
Queue activity counters
Interprocess communication counters

Note: The sadc command reports only local activity.

Security

Access Control: These commands should grant execute (x) access only to members of the adm group.

Examples

To write 10 records of one second intervals to the /tmp/rpt binary file, enter:

sadc 1 10 /tmp/rpt

Files

/var/adm/sa/sadd	Contains the daily data file, dd represents the day of the month.
/var/adm/sa/sardd	Contains the daily report file, dd represents the day of the month.
/tmp/rpt	Contains the binary file used for input by the sar command.
/tmp/sa.adrf1	Contains the address file.

Related Information

The sar command, sa1 command, sa2 command, timex command.

The cron daemon.

Accounting Overview, Setting Up an Accounting System in the AIX 5L Version 5.1 System Management Guide: Operating System and Devices.

Accounting Commands in the AIX 5L Version 5.1 System Management Concepts: Operating System and Devices lists accounting commands that can be run automatically or entered from the keyboard.