Sunday, June 3, 2007

Question 37

For a given online system, the number of CPU instructions which need to be executed in order to process a single transaction is 80,000, with an average processing time of one microsecond per instruction. If this system is upgraded, what is the minimum factor by which CPU processing performance must be increased in order to process 30 transactions per second? For this problem, assume
that the limit to CPU utilization is 80%, and that processing performance is independent of I/O and determined only by the CPU.

a) 2.0
b) 2.4
c) 3.0
d) 12.0

answer

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