Computer Systems Performance Evaluation and Prediction

Efficiency, 340-41

defined, 340

measurement, 340

multiprocessor curve, 341

ENIAC computer system, 2

Erlang distribution, 176-77

defined, 176

See also Probability distributions

Evaluation parameters, 311-14

Events, 110-12

characteristics, 476

control, 479

defined, 110

hierarchy of relationships, 112

independence of, 147

interface unit, 477-78

LAN simulation, 476-79

nodal activity, 478-79

partial orderings, 111

processor, 477

utilization, 479

values, 112-13

See also Performance measures

Event timing, 256

Executable models, 29

Executive subsystems (NT), 367

Expectation, 155-63

for continuous random variable, 156

defined, 155

for discrete random variable, 155-56

for function of random variable, 156

nth moment, 158

See also Random variables

Expected delay, 240

Expected waiting time, 210

Experimental design, 326-28

fractional factorial, 327, 328

full factorial, 327, 328

simple, 327

Exponential distribution, 130, 173-76

defined, 173

illustrated, 175

Markovian property, 173, 181

random variable variance, 176

service, 207

See also Probability distributions