Question

Context switch is a pure overhead

Answer 1

Answer:

Context-switch time is pure overhead, because the system does no useful work while switching. ... Context switching is overhead because it is cycles (time) that the processor is being used but no user code is executing, so no directly productive computing is getting done.

Answer 2

Context-switch time is pure overhead, because the system does no useful work while switching. ... Context switching is overhead because it is cycles (time) that the processor is being used but no user code is executing, so no directly productive computing is getting done.

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