Self Doubt CPU

Question

In Multi-processing Operating Systems:
(a) Maximum utilization of CPU can be achieved
(b) Maximum throughput is achieved
(c) Maximum security can be achieved
(d) Not suitable for Real time Applications

Answer 1

Answer is option b

Maximum throughput is achieved in Multiprocessing operating system.

We know that in multiprocessing OS,multiple processors work in parallel that share the same clock and other periperal devices.

Since multiple processors are working in parallel,so the number of processes executed per unit time increases.As a result,the throughput also increases.

Comments

any effect on CPU utilization?

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No

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@Sreshta somewhere I read the answer was 'A' any comment on this one?

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Are you interpreting multiprocessing and multiprocessor the same?

As the question is about the multiprocessing system, how multiprocessing system can have multiple processor?

Answer 2

Option (B):

As the number of processors increases,number of process executed per unit time increases which increases the throughput

If its about CPU utilization it may either be more or be less depending on the number of process at ant instant and also depends on the scheduling algorithms the individual processors possesses.

Answer 3

Note that an utilization of 50% on a system with 4 processors corresponds to a workload that is double with respect to a 2 processor system with an utilization of 50%. In fact, 4 processors used half of the time can allocate twice the tasks of two processors used half of the time.

A. CPU utilization may decrease. 

B. This is actual use of it.

C. Security may decrease. Single processor is more secured.

D. As throughout is more it's suitable for real time system as we are more likely to finish job within deadline.

So B is correct.

 

Source: https://www.sciencedirect.com/topics/computer-science/multiprocessor-systems