EXERCISES

  1.   1. Table 11.2 shows an execution mix and runtimes for two computers, System A and System C. In this example, System C is 83% faster than System A. Table 11.3 shows runtimes for System A with a different execution mix. Using the execution mix in Table 11.3, calculate the percentage by which System C would be faster than System A. Using the original statistics from Table 11.2, by how much has the performance of System A degraded under the new execution mix?

  2.      2. With regard to the performance data cited for programs v, w, x, y, and z in Section 11.3, find the geometric means of the runtimes of the programs for System B and System C, using System A as the reference system. Verify that the ratios of the means are consistent ...

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