For each situation below, define the customers, the server(s), the queue discipl
ID: 328850 • Letter: F
Question
For each situation below, define the customers, the server(s), the queue discipline the service time, the maximum queue length, and the calling source: Orders for jobs are received at a workshop for processing. On receipt, the supervisor decides whether it is a rush or a regular job. Some orders require the use of one of several identical machines. The remaining orders are processed in a two- stage production line, of which two are available. In each group, one facility is assigned to handle rush jobs. Jobs arriving at any facility are processed in order of arrival. Completed orders are shipped on arrival from a shipping zone having a limited capacity. Sharpened tools for the different machines are supplied from a central total crib. When a machine breaks down, a repairperson is summoned from the service pool to make the repair. Machines working on rush orders always receive priorities both acquiring new tools from crib and in receiving repair serviceExplanation / Answer
Case-1
Customer- the entity which requires some service so in this case job orders are requiring to serviced by the machines so job orders are customers
Servers- Here in workshop machines are there which will process the orders so Machines are servers
Queuing discipline- Here jobs are getting serviced according to their priority(Rush or Regular) so the queuing discipline would be Priority Service
Service time -It is the time required for processing
Here some jobs are getting service from any of the identical machines so the service time is constant for some jobs
Some other jobs require to be serviced in series so service time will be addition of two machines service time
Calling Source -> It is the source of population which generates customers for a queuing system.In this case calling source is finite as there are limited no of machines are there for service.In case of banks or stores It can be infinite
Case-2
Customers -Jobs
Servers - Shipping zone
Queuing Discipline- FIFO or FCFS (first ome first serve basis) as they are processed in order of arrival
Service time - The time required to ship the order from shipping zone
Calling source-. It is finite here as there are limited zones to ship the jobs
Case-3
Customers - Machines as they getting served in case of breakdown
Server- 1 repair person
Queuing discipline -Priority service as machines working on rush orders get priority
Service time- Time required by the repair person to repair the break down machine
Calling source - finite here as limited repair person that is one is available
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