Displaying Accounting system activity
You can display formatted information about system activity with the sar command.
To display system activity statistics, the sadc command must be running.
Note: The typical method of running the sadc command
is to place an entry for the sa1 command in the root crontab file.
The sa1 command is a shell-procedure variant of the sadc command
designed to work with the cron daemon.
To display basic system-activity information, type:
sar 2 6
where
the first number is the number of seconds between sampling intervals and the
second number is the number of intervals to display. The output of this command
looks something like this: arthurd 2 3 000166021000 05/28/92
14:03:40 %usr %sys %wio %idle
14:03:42 4 9 0 88
14:03:43 1 10 0 89
14:03:44 1 11 0 88
14:03:45 1 11 0 88
14:03:46 3 9 0 88
14:03:47 2 10 0 88
Average 2 10 0 88
The sar command also offers a number of flags for displaying an extensive array of system statistics. To see all available statistics, use the -A flag. For a list of the available statistics and the flags for displaying them, see the sar command.