A system has several processes that request I/O services in long time intervals compared with very short CPU service. For example, the processes request services that about 95 percent of the total service request time are I/O requests and only 5 percent are CPU requests. What potential problems can this system exhibit

Question

Computers and Technology

Koen Rush

4 November, 19:09

A system has several processes that request I/O services in long time intervals compared with very short CPU service. For example, the processes request services that about 95 percent of the total service request time are I/O requests and only 5 percent are CPU requests. What potential problems can this system exhibit

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Skylar Vaughn · Answer 1

Check the explanation

Explanation:

It boosts the CPU scheduler's task since it must regularly select the process and assign them to CPU for execution. In addition, there will always be a lot of switches from running state to waiting state.

It leads to largely high context switch which is complete overhead. So CPU will use additional time in context switch instead of executing the process which will later leads to under utilization of CPU.

Therefore, the CPU scheduler chooses the well mixture of processes so that CPU is utilized to its maximum capacity.