You might be using a default class other than TS. For example, your system might be running a window environment that uses the IA class by default. You can manually move all processes into the FSS scheduling class without changing the default scheduling class and rebooting.
Become superuser or assume an equivalent role.
Roles contain authorizations and privileged commands. For more information about roles, see Using the Solaris Management Tools With RBAC (Task Map) in System Administration Guide: Basic Administration.
Move the init process (pid 1) into the FSS scheduling class.
# priocntl -s -c FSS -i pid 1
Move all processes from their current scheduling classes into the FSS scheduling class.
# priocntl -s -c FSS -i all
All processes again run in the default scheduling class after reboot.