install-cron

Answer y if you want to automate sar reporting. In this case, a crontab will
be created to periodically start the data collector. System activity daily
data files will then be created in the /var/log/sa directory.
You can find various crontab templates in sysstat directory. By default
sysstat will try to use sysstat.crond template and install it in the
/etc/cron.d directory.
Default answer is n here.