Fundamentals of Applied Probability Theory
Fundamentals of Applied Probability Theory
Multiprocessor memory organization and memory interference
Communications of the ACM
A performance measurement and system evaluation project plan proposal
ACM SIGMETRICS Performance Evaluation Review
A queueing network model for the effect of data compression on system efficiency
AFIPS '76 Proceedings of the June 7-10, 1976, national computer conference and exposition
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A multiple channel controller (MCC)is a controller which allocates a given number of channels among a larger number of peripheral devices, and permits simultaneous access to as many devices as there are channels available. Using simplifying assumptions, we develop formulas, based on infinite source queueing models, which closely approximate the mean effective service time, (MEST). The MEST is the time interval between arrival at the head of the queue and service completion, which includes both service time and waiting time at the head of the queue caused by the sharing of channels among devices. We also derive expressions for the variance of the effective service time. Various service time distributions and channel scheduling disciplines are examined and analytic results are compared graphically with those obtained by simulation. Alternative system configurations are compared with the objective of minimizing queueing delays.