1. Oracle VM Server for SPARC 3.6 Administration Guide
  2. Managing Resources
  3. CPU Allocation
  4. Interactions Between the Whole-Core Constraint and Other Domain Features
  5. CPU Dynamic Reconfiguration

CPU Dynamic Reconfiguration

The whole-core constraint is fully compatible with CPU dynamic reconfiguration (DR). When a domain is defined with the whole-core constraint, you can use the ldm add-core, ldm set-core, or ldm remove-core command to change the number of cores on an active domain.

However, if a bound or active domain is not in delayed reconfiguration mode, its number of cores cannot exceed the maximum number of cores. This maximum is set with the maximum core constraint, which is automatically enabled when the whole-core constraint is enabled. Any CPU DR operation that does not satisfy the maximum core constraint fails.