To enable sysstat’s sar to collect stats in the background:
# ln -s /etc/init.d/perf /etc/rc2.d/S21perf
# /etc/rc2.d/S21perf start
Use “crontab -e sys” to make sure sys crontab looks like:
0 kraftek.html POSTS rescue rescued.html rescued.txt x y z kraftek.html POSTS rescue rescued.html rescued.txt x y z kraftek.html POSTS rescue rescued.html rescued.txt x y z 0-6 /usr/lib/sa/sa1
20,40 8-17 kraftek.html POSTS rescue rescued.html rescued.txt x y z kraftek.html POSTS rescue rescued.html rescued.txt x y z 1-5 /usr/lib/sa/sa1
5 18 kraftek.html POSTS rescue rescued.html rescued.txt x y z kraftek.html POSTS rescue rescued.html rescued.txt x y z 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A
To verify, issue “sar -A” or just “sar”