Variables Guide

1 • VARIABLES
Total.WaitCost—Total waiting cost. This is the total wait cost for all entities.
Total.TranCost—Total transfer cost. This is the total transfer cost for all entities.
Total.OtherCost—Total other cost. This is the total other cost for all entities.
Total.EntityCost—Total entity cost. This is the sum of the costs in the five allocation
categories above for all entities. This can be a simple way of determining the total
cost of all entities. Note that this number will typically include those resource costs
that can be attributed to a specific entity.
Total.ResUseCost—Total resource usage cost. This is the total of the usage costs (for
example, costs per seize) for all resources. It is the product of ResSeizes( ) *
ResUseCost( ), summed for all resources. Note that these costs are typically also
included in entity costs because they can be assigned to a particular entity.
Total.ResBusyCost—Total resource busy cost. This is the total of the busy costs (for
example, costs while seized) for all resources. It is the product of ResBusyCost( ) *
Average Number Busy * TNOW, summed for all resources. Note that these costs are
typically included in entity costs as well because they can be assigned to a particular
entity.
Total.ResIdleCost—Total resource idle cost. This is the total of the idle costs (for
example, costs while scheduled, but not busy) for all resources. It is the product of
ResIdleCost( ) * Average Number Idle * TNOW, summed for all resources. Note that
these costs are never included in entity costs because they cannot be assigned to a
particular entity.
Total.ResourceCost—Total resource cost. This is the sum of the costs in the three
categories above for all resources. This can be a simple way of determining the total
cost of all resources used in the system.
Total.SystemCost—Total system costs. This is the sum of all costs. This can be a
simple way of evaluating the total cost of one system relative to another. It is the sum
of Total.EntityCost and all costs that have been incurred, but not yet allocated to an
entity.
Statistics collection variables
A set of variables is provided to access information about each type of Arena statistic.
The types of variables provided depend upon the statistic type. Most of these
variables take the statistic identifier as an argument; frequency variables take the
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