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The logarithm transformation is just one of numerous other possible transformations. For a discussion of other possible transformations, see Chapter 15.

TABLE 21.18 Measured Execution Times for the Intel iAPX 432 Study

Workload Execution Times
System Word
No. Processor Language Size 484 Sieve Puzzle Acker
1 VAX-11/780 C 32 1.4 250.0 9,400.0 4,600.0
2 Pascal (UNIX) 32 1.6 220.0 11,900.0 7,800.0
3 Pascal (VMS) 32 1.4 259.0 11,530.0 9,850.0

4 68000 (8 MHz) C 32 4.7 740.0 37,100.0 7,800.0
5 Pascal 16 5.3 810.0 32,470.0 11,480.0
6 Pascal 32 5.8 960.0 32,520.0 12,320.0

7 68000(16 MHz) Pascal 16 1.3 196.0 9,180.0 2,750.0
8 Pascal 32 1.5 246.0 9,200.0 3,080.0

9 8086(5 MHz) Pascal 16 7.3 764.0 44,000.0 11,100.0

10 432 Ada 16 35.0 3,200.0 350,000.0 260,000.0
11 Ada 16 14.2 3,200.0 165,000.0 260,000.0
12 Ada 32 16.1 3,200.0 180,000.0 260,000.0

Data from Hansen et al. (1982). Reprinted with permission.

TABLE 21.19 ANOVA Table for the Intel iAPX 432 Study

Sum of Percentage of Degrees of Mean F- F-
Component Squares Variation Freedom Square Computed Table

y 576.64
449.01
127.63 100.0 47
Workloads 113.01 88.5 3 37.7 1158.5 2.3
Systems 13.55 10.6 11 1.2 37.9 1.8
Errors 1.07 0.8 33 0.03


FIGURE 21.5  Confidence intervals for effects in the Intel iAPX 432 study.


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