Q. Consider the demand-paged computer system where the level of multiprogramming is currently fixed at four. The system was recently deliberate to determine utilization of CPU and the paging disk. The consequences are one of the following alternatives. For every case what is happening? Can the degree of multiprogramming be improved to increase the CPU utilization? Is a paging helping?
a. CPU utilization 13 percent disk utilization 97 percent
b. CPU utilization 87 percent disk utilization 3 percent
c. CPU utilization 13 percent disk utilization 3 percent
Answer:
a. Thrashing is taking place.
b. CPU utilization is adequately high to leave things alone and increase degree of multiprogramming.
c. Enhance the degree of multiprogramming.