Configuration Constraints

Constraints affect the range of possible configurations by eliminating some of the potential changes that could be made to a configuration. The following constraints, which are specified in the libpool configuration, are available.

• The minimum and maximum CPU allocations

• Pinned components that are not available to be moved from a set

See the libpool(3LIB) man page and Pools Properties for more information about pools properties.

pset.min Property and pset.max Property Constraints

These two properties place limits on the number of processors that can be allocated to a processor set, both minimum and maximum. See Table 12–1 for more details about these properties.

Within these constraints, a resource partition's resources are available to be allocated to other resource partitions in the same Solaris instance. Access to the resource is obtained by binding to a pool that is associated with the resource set. Binding is performed at login or manually by an administrator who has the PRIV_SYS_RES_CONFIG privilege.

cpu.pinned Property Constraint

The cpu-pinned property indicates that a particular CPU should not be moved by DRP from the processor set in which it is located. You can set this libpool property to maximize cache utilization for a particular application that is executing within a processor set.

See Table 12–1 for more details about this property.

pool.importance Property Constraint

The pool.importance property describes the relative importance of a pool as defined by the administrator.