Example of Preemptive Entities

In this example entity (EntA) arrives at location Loc1. Immediately upon arrival it requests to use resource Res1 for a normally distributed amount of time. The priority for obtaining the resource is 99, which means that it is a non-preemptive request. When Res1 becomes available, EntA will be first in line because it has the highest non-preemptive priority possible. When processing is complete for this entity, it is routed to Loc2 with priority 200. This means that it can preempt another entity or a downtime that may already be in process at Loc2. (See Location Downtimes and Resource Downtimes for more details on entity preemption.)

Process Table

Routing Table