Resource Group Management Statements [THREAD_PRIORITY [=]  N ] [ENABLE|DISABLE] vcpu_spec : { N  |  M  -  N } CREATE RESOURCE GROUP  is used for resource group management (see Section 5.1.16, “Resource Groups” ). This statement creates a new resource group and assigns its initial attribute values. It requires the  RESOURCE_GROUP_ADMIN  privilege. group_name  identifies which resource group to create. If the group already exists, an error occurs. The  TYPE  attribute is required. It should be  SYSTEM  for a system resource group,  USER  for a user resource group. The group type affects permitted  THREAD_PRIORITY  values, as described later. The  VCPU  attribute indicates the CPU affinity; that is, the set of virtual CPUs the group can use: •If  VCPU  is not given, the resource group has no CPU affinity and can use all available CPUs. •If  VCPU  is given, the attribute value is a list of comma-separated CPU numbers or ranges: • Each number must be an integer in the range from 0 to the number of CPUs  − 1. For example, on a system with 64 CPUs, the number can range from 0 to 63. • A range is given in the form  M − N , where  M  is less than or equal to  N  and both numbers are in the CPU range. •If a CPU number is an integer outside the permitted range or is not an integer, an error occurs. VCPU = 0,1,2,3,9,10 VCPU = 0-3,9-10 VCPU = 9,10,0-3 VCPU = 0,10,1,9,3,2 The  THREAD_PRIORITY  attribute indicates the priority for threads assigned to the group: •If  THREAD_PRIORITY  is not given, the default priority is 0. •If  THREAD_PRIORITY  is given, the attribute value must be in the range from -20 (highest priority) to 19 (lowest priority). The priority for system resource groups must be in the range from -20 to 0. The priority for user resource groups must be in the range from 0 to 19. Use of different ranges for system and user groups ensures that user threads never have a higher priority than system threads. •Create an enabled user group that has a single CPU and the lowest priority: •Create a disabled system group that has no CPU affinity (can use all CPUs) and the highest priority: ENABLE  and  DISABLE  specify that the resource group is initially enabled or disabled. If neither is specified, the group is enabled by default. A disabled group cannot have threads assigned to it. Examples: CREATE RESOURCE GROUP rg1 TYPE = USER VCPU = 0 THREAD_PRIORITY = 19; CREATE RESOURCE GROUP rg2 TYPE = SYSTEM 2884 Example  VCPU  specifiers (these are all equivalent):