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    CPU Utilization

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    Consider a demand-paging system with the following time-measured utilizations:

    CPU utilization 20%
    Paging disk 97.7%
    Other I/O devices 5%

    For each of the following say, whether it will (or is likely to) improve CPU utilization. Explain the answer.

    a. Install a faster CPU.
    b. Install a bigger paging disk.
    c. Increase the degree of multiprogramming
    d. Decrease the degree of multiprogramming
    e. Install more main memory
    f. Install a faster hard disk or multiple controllers with multiple hard disks
    g. Add prepaging to the page-fetch algorithms
    h. Increase the page size

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    https://brainmass.com/computer-science/cpu-utilisation/cpu-utilization-355033

    Solution Preview

    A)Install a faster CPU: No, Installing a faster CPU will not improve CPU utilization in current scenario , because the CPU is already under Utilized.

    B)Install a bigger paging disk: No, in this scenario , paging disk is full but still has some room for storage , but CPU is running on just 20% of its capacity , increasing the paging disk will give the ability to store more data on the paging disk , but it will not make CPU to perform faster.

    C)Increase the degree of multiprogramming: Yes , In this scenario it is evident that there are many programs that are waiting to get the execution cycle of the CPU , since the paging disk is almost full , but the CPU is running at just 20% which means it is running few ...

    Solution Summary

    Consider a demand-paging system with the following time-measured utilizations:

    CPU utilization 20%
    Paging disk 97.7%
    Other I/O devices 5%

    $2.19