OpenDarwin 7.2.1 - man page for sa1 (opendarwin section 8)

sa1(8)				   BSD System Manager's Manual				   sa1(8)

NAME
     sa1 -- Generate a system activity daily data file.

SYNOPSIS
     /usr/lib/sa/sa1 [t n]

DESCRIPTION
     The sa1 command is a shell script used to invoke the system activity data collector, sadc.
     The binary sample data is collected at intervals t seconds apart, in a loop n times.  The
     binary sample data is written to the standard daily data file, /var/log/sa/sadd where the dd
     represents the current day of the month.

     sa1 is intended to be started by cron.

EXAMPLE CRON ENTRY
     # Starting at 8am collect system activity records
     # every 20 minutes for 12 hours
     # 20 minutes = 1200 seconds
     # 12 hours with 3 samples each hour = 36 loops

     0 8 * * 1-5 /usr/lib/sa/sa1 1200 36

     # After the 12 hour period,
     # collect a system activity report

     30 20 * * 1-5 /usr/lib/sa/sa2 -A

FILES
     /var/log/sa/sadd  Default daily activity file that holds the binary sampling data.  dd are
		       digits that represent the day of the month.

SEE ALSO
     sa2(8), sadc(8), sar(1), iostat(8), vm_stat(1), netstat(1), top(1), sc_usage(1),
     fs_usage(1), crontab(1), crontab(5)

Mac OS X				   Jul 25 2003					 Mac OS X