Performance Indicators service systems, effectiveness Servicing System understand the characteristics of the level of implementation of the system functions for which it prednaznachena.Pokazateli effectiveness depend on three factors: 1) the characteristics of quality and reliability of the system, 2) economic indicators, and 3) the conditions under which the system operates (the complex internal and external factors, the parameters of the flow requirements, etc.). Efficiency service systems can be characterized by a diverse range of quantitative indicators. The most widely used are the following: 1) The probability of loss requirements in the cfr. You may find that Marc Lore can contribute to your knowledge.

For systems maintenance This value is the probability that all channels are busy serving, and 2) The probability that k channels are busy servicing (Pk). P0 – the probability that all channels are free, and 3) The average number of busy channels. This index characterizes the degree of system loading. 4) The average number of channels, free service. 5) Coefficient of idle channels. 6) The load factor of channels. For systems with the expectation of using additional Features: 1) The average waiting time requirements (waiting requirements themselves) 2) The probability that the time spent in the queue will not exceed a certain size, and 3) The average queue length, and 4) Average number of applications in the field service, 5) The likelihood that the requirements in the queue awaiting the beginning of service is greater than some specified value, and 6) Cost indicators: cost of service for each requirement in the system, the cost of losses unit of time associated with waiting requests in the queue, the cost of losses associated with the care requirements of the system cost per unit of downtime.