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A solution to test 1 for cs330 spring 2007 course. It covers various topics including cpu-i/o overhead, memory hierarchy, multiprogramming vs time-sharing, system calls, pcbs, threading, and scheduling. It includes explanations and formulas for calculating hit-ratios and effective access times, comparisons between multiprogramming and time-sharing, and discussions on the roles of system calls, pcbs, and threading in a computer system.
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Solution Test 1 CS Spring 2007
Assume, for the problem, the hit-ratio to be H. The effective access time = 110 ns. This implies 110 ns = H * 100 ns + (1-H) * 1300 ns Or, 1200* H = 1190. This yields H = 1190/1200 =
Ready Queue to receive more CPU bursts unless blocked for I/O or interrupted. A typical example
The objective of a MP is maximization of processor’s utilization (minimization of its idle-time).