Policy Types

Allocates a fixed (constant) amount of CPU resources to a workload’s compartment.

gWLM satisfies these policies before attempting to satisfy any other type of policies.

Attempts to keep a workload’s CPU utilization close to a target percentage by requesting more CPU resources when the workload is using too much of its current CPU resource allocation or by requesting fewer resources when the workload is using too little of its allocation. For example, assume a workload has a utilization policy with a target of 80% and an allocation of 5 cores. If the workload is consuming 4.5 cores, its utilization percentage is 4.5/5, or 90%. gWLM would attempt to allocate additional CPU resources to the workload’s compartment to meet the target. An allocation of 6 cores would result in a utilization percentage of 4.5/6, or 75%, meeting the target.

With a utilization policy, you specify the minimum and maximum CPU resource requests. Workloads with this type of policy are always allocated at least the minimum request. Utilization policies allow you to prioritize workloads.

Allows you to set the following values:

The compartment of a workload with an OwnBorrow policy is allocated the owned CPU resources when needed. The minimum and maximum sizes allow you to specify how much the workload can lend (when resources are not needed) or borrow (when additional resources are needed and available). If a compartment has lent out cores and that compartment’s workload becomes busy, the compartment re-acquires those lent-out cores.

Available for advanced users. For information on custom policies, refer to the online help or gwlmxml(4).

Specifies the existing policy to use when a time-based condition, a file-based condition, or a Serviceguard condition is met.