This read-write Integer32 (1-100) sets the CPU utilization percentage at or above which VISM sends a trap alerting that the card's processor is under heavy load. An admin cares because this trap is the mechanism for detecting CPU-bound performance problems on the VISM card before they cause call processing delays or failures. For example, an operator who has seen call setup slow down during peak hours would lower this threshold from a very high default so the trap fires earlier as CPU load climbs.