Scheduling Class

Scheduling classes provide different CPU access characteristics to threads that are based on algorithmic logic. The scheduling classes include:

• Realtime scheduling class

• Interactive scheduling class

• Fixed priority scheduling class

• Timesharing scheduling class

• Fair share scheduling class

For an overview of fair share scheduler and example commands for administering the fair share scheduler, see Chapter 8, Fair Share Scheduler (Overview), in System Administration Guide: Solaris Containers-Resource Management and Solaris Zones and Chapter 9, Administering the Fair Share Scheduler (Tasks), in System Administration Guide: Solaris Containers-Resource Management and Solaris Zones.

Do not mix scheduling classes in a set of CPUs. If scheduling classes are mixed in a CPU set, system performance might become erratic and unpredictable. Use processor sets to segregate applications by their characteristics. Assign scheduling classes under which the application best performs. For more information about the characteristics of an individual scheduling class, see priocntl(1).

For an overview of resource pools and a discussion of when to use pools, see Chapter 6, Resource Pools.