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. Dynamic Resource Management

Dynamic Resource Management

The whole-core constraint is fully compatible with dynamic resource management (DRM).

The expected interactions between the whole-core constraint and DRM are as follows:

  • While a DRM policy exists for a domain, you cannot switch the domain from being whole-core constrained to whole-core unconstrained or from being whole-core unconstrained to whole-core constrained. For example:

    • When a domain is whole-core constrained, you cannot use the ldm set-vcpu command to specify a number of virtual CPUs and to remove the whole-core constraint.

    • When a domain is not whole-core constrained, you cannot use the ldm set-core command to specify a number of whole cores and to add the whole-core constraint.

  • When a domain is whole-core constrained and you specify the attack, decay, vcpu-min, or vcpu-max value, the value must be a whole-core multiple.