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System Administration Guide: Advanced Administration

How to Set Up Automatic Data Collection

  1. Become superuser.

  2. Edit the /etc/init.d/perf file and uncomment the following lines: 


    # if [ -z "$_INIT_RUN_LEVEL" ]; then
#       set -- `/usr/bin/who -r`
#       _INIT_RUN_LEVEL="$7"
#       _INIT_RUN_NPREV="$8"
#       _INIT_PREV_LEVEL="$9"
# fi
# 
# if [ $_INIT_RUN_LEVEL -ge 2 -a $_INIT_RUN_LEVEL -le 4 -a \
#     $_INIT_RUN_NPREV -eq 0 -a \( $_INIT_PREV_LEVEL = 1 -o \
#     $_INIT_PREV_LEVEL = S \) ]; then
# 
#       /usr/bin/su sys -c "/usr/lib/sa/sadc /var/adm/sa/sa`date +%d`"
# fi

    This version of the sadc command writes a special record that marks the time when the counters are reset to zero (boot time).

  3. Edit the /var/spool/cron/crontabs/sys crontab file and uncomment the following lines:


    # 0 * * * 0-6 /usr/lib/sa/sa1
# 20,40 8-17 * * 1-5 /usr/lib/sa/sa1
# 5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A