Queuing network techniques are effective for evaluating the performance of computer systems. We discuss a queuing network technique for computer systems with multiple memory resource requirements. When a job arrives from outside the network, it occupies one of the memory resources and executes CPU and I/O processing in the network occupying the memory. When the job completes the CPU and I/O pro...

a r t i c l e i n f o During the course of a construction project, there are many situations in which formation of waiting lines or queues is inevitable. The effect of resource delays in queues on the overall project completion time and cost has motivated researchers to employ simulation for analysis of queuing systems in order to identify the best operational strategies to reduce the time wast...

In this paper, we use both fuzzy optimization and normal simulation methods to solve fuzzy web planning model problems, which are queuing system problems for designing web servers. We apply fuzzy probabilities to the queuing system models with customers arrival rate λ and servers’ service rate μ, and then compute fuzzy system performance variables, including Utilization, Number (of requests) in...