assuming it's installled, try this:
crontab as root
sudo crontab -e -u root
5-55/10 * * * * /usr/lib/sa/sa1 -S ALL 1 1
59 23 * * * /usr/lib/sa/sa1 -S ALL 60 2
Save and exit the editor and
then check it after 2 minutes with
Please let us know...