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

Description

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 Configuration Parameters
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.

Attention RBAC users and Trusted AIX users: This command can perform privileged operations. Only privileged users can run privileged operations. For more information about authorizations and privileges, see Privileged Command Database in Security. For a list of privileges and the authorizations that are associated with this command, see the lssecattr command or the getcmdattr subcommand.

Examples

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

sadc 1 10 /tmp/rpt

Files

Item	Description
/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.