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CHAPTER THREE Criteria for performance evaluation
CHAPTER FOUR Evaluating and improving performance
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Appendix application program average seek average throughput rate batch jobs batch production benchmark bottleneck resource bytes calculated channel busy characteristics cylinders data processing system discrete event simulator disk jobstream disk seek elapsed Equation estimate ETMF evaluation interface evaluation period Figure GPSS hardware monitor illustrates inquiries per second interactive time sharing job logging routine jobs per hour jobs processed jobs successfully completed latency load profile long jobs magnetic tape main memory meaningful measured multiprocessor multiprogrammed needed operating system output master file overlay paper analysis pencil and paper performance evaluation performance improvement probe processor busy queue real time system reduced Relative throughput rate representative work load resource utilization sharing systems short jobs simulation model software monitor software overhead specific step system processing tape jobstream tape transfer tion transactions per second transactions processed turn unit of data user programs vendor virtual memory system Wall clock system