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Measurements of a certain system have shown that the
average process runs for a time T before blocking
on I/O. A process switch requires a time S, which is
e&#64256;ectively wasted (overhead). The CPU’s e&#64259;ciency is
the fraction of its time its spends executing user
programs, i.e., executing user processes. For round robin
scheduling with quantum Q, give a formula for the CPU
e&#64259;ciency for each of the following:
(a) Q = &#8734;
(b) Q > S + T
(c) S <Q<S + T
(d) Q = S


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