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<p>A performance evaluation method for comparing and improving concurrent uniprocessor architectures is introduced, and a detailed case study of its application to two machines is reported. The architectures of the machines, the IBM RS/6000 and the Astronautics ZS-1, are described. The measured performance is given, and a model that yields hard bounds on a machine's performance on a benchmark is presented. The sources of performance loss, i.e. the difference between the model-derived bounds and the measured performance, are examined, and areas for improving the architectures are determined.</p>

E. S. Davidson, S. G. Abraham and W. Mangione-Smith, "A Performance Comparison of the IBM RS/6000 and the Astronautics ZS-1," in Computer, vol. 24, no. , pp. 39-46, 1991.
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