A program repeatedly performs a three-step process it reads, Ask an Expert

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A program repeatedly performs a three-step process: it reads in a 4-KB block of data from disk, does some processing on that data, and then writes out the result as another 4-KB elsewhere on the disk. Each block is contiguous and randomly located on a single track on the disk.

The disk drive rotates at 7200 RPM, has an average seek time of 8 ms, and has a transfer rate of 20 MB/sec.

The controller overhead is 2 ms. No other program is using the disk or processor, and there is no overlapping of disk operation with processing.

The processing step takes 20 million clock cycles, and the clock rate is 400 MHz. What is the overall speed of the system in blocks processed per second?

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M93094765

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