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Computer system components
Queuing models of computer systems
8 other sections not shown
active terminals analysis arrival rate average number batch jobs batch streams behavior benchmark bottleneck device busy cache calculate capacity management capacity planner capacity planning central system channel Chapter chargeback system closed workload cluster complete components computer system considered context switches coprocessor costs described disk drive disk subsystem estimate eventTime example exponential distribution Figure hardware monitor important increase initial input installation job classes jobPointer jobs/sec large number latency Little's Law load main memory maximum number mean response measurements NFUs number of active number of jobs number of terminals obtained open workload operating system optimizing page fault parameters peak hour predictions priority processing processor queue length queuing model queuing theory random number resource requirements rotational position sensing sampling secs server service level agreements system performance terminal system throughput rate transactions transfer tuning usage users utilization variables visit ratio workload forecasts