The FSS must be the default scheduler on your system to have CPU shares assignment take effect.
Using a combination of the priocntl and dispadmin commands ensures that the FSS becomes the default scheduler immediately and also after reboot.
Become superuser or assume an equivalent role.
Set the default scheduler for the system to be the FSS.
# dispadmin -d FSS
This change takes effect on the next reboot. After reboot, every process on the system runs in the FSS scheduling class.
Make this configuration take effect immediately, without rebooting.
# priocntl -s -c FSS -i all