Question: Suppose we have a round-robin scheduler in the OS kernel of a preemptively time sliced system, and three programs in its ready queue: P1, P2,

Suppose we have a round-robin scheduler in the OS kernel of a preemptively time sliced system, and three programs in its ready queue: P1, P2, and P3. P1 takes 10 seconds to complete, P2 takes 8.5 seconds, and P3 takes 3 seconds. Suppose the time slice is 2 seconds, and the overhead for OS context switching is 0.2 seconds. If P1 starts executing first at time 0, when do each of the programs finish executing? Draw a timeline of execution. What is the percentage overhead due to context switching? Assume that a process that finishes early transfers control back to the OS scheduler.

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