Assume a quad-core computer system can process database queries at a steady state rate of requests per second. Also assume that each transaction takes, on average, a fixed amount of time to process. The following table shows pairs of transaction latency and processing rate.Average Transaction LatencyMaximum transaction processing rate1 ms2 ms1 ms2 ms5000/sec5000/sec10,000/sec10,000/secFor each of the pairs in the table, answer the following questions:> On average, how many requests are being processed at any given instant?> If move to an 8-core system, ideally, what will happen to the system throughput (i.e., how many queries/second will the computer process)?> Discuss why we rarely obtain this kind of speedup by simply increasing the number of cores.

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Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Assume a quad-core computer system can process database queries at a steady state rate of requests per second. Also assume that each transaction takes, on average, a fixed amount of time to process. The following table shows pairs of transaction latency and processing rate.

Average Transaction Latency

Maximum transaction processing rate

1 ms

2 ms

1 ms

2 ms

5000/sec

10,000/sec

For each of the pairs in the table, answer the following questions:
> On average, how many requests are being processed at any given instant?
> If move to an 8-core system, ideally, what will happen to the system throughput (i.e., how many queries/second will the computer process)?
> Discuss why we rarely obtain this kind of speedup by simply increasing the number of cores.

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