utilizationPreferences

The preference to control the resource’s CPU utilization threshold, CPU utilization headroom, and memory utilization headroom. When this preference isn't specified, we use the following default values.

CPU utilization:

• P99_5 for threshold

• PERCENT_20 for headroom

Memory utilization:

• PERCENT_20 for headroom

• You can only set CPU and memory utilization preferences for the Amazon EC2 instance resource type.

• The threshold setting isn’t available for memory utilization.