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Calculate the Average memory access time for the following memory hierarchy. Where AM = Hit Time + Miss Rate * Miss Penalty AMAT = hit time0 + miss rate0* (hit time1 + miss rate1* (hit time2 + miss rate2* miss penalty2)) Level O is on-chip cache. The on-chip cache hit rate is 90%, hit time is 5 ns. Level 1 is off-chip cache. The off-chip cache hit rate is 96%, hit time is 10 ns. Level 2 is main memory. The main memory hit rate is 99.8%, hit time is 60 ns. Level 3 is disk (miss penalty2 is disk access time given the disk is the highest tier, which is lengthy). Memory miss penalty or Disk access time is 10 micro sec = 10,000 ns.

Calculate the Average memory access time for the following memory hierarchy. Where AM = Hit Time + Miss Rate * Miss Penalty AMAT = hit time0 + miss rate0* (hit time1 + miss rate1* (hit time2 + miss rate2* miss penalty2)) Level O is on-chip cache. The on-chip cache hit rate is 90%, hit time is 5 ns. Level 1 is off-chip cache. The off-chip cache hit rate is 96%, hit time is 10 ns. Level 2 is main memory. The main memory hit rate is 99.8%, hit time is 60 ns. Level 3 is disk (miss penalty2 is disk access time given the disk is the highest tier, which is lengthy). Memory miss penalty or Disk access time is 10 micro sec = 10,000 ns.

Computer Networking: A Top-Down Approach (7th Edition)
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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Calculate the Average memory access time for the following memory hierarchy. Where AMAT = Hit Time + Miss Rate * Miss Penalty AMAT = hit time0 + miss rate0* (hit time1 + miss rate1* (hit time2 + miss rate2 * miss penalty2)) Level O is on-chip cache. The on-chip cache hit rate is 90%, hit time is 5 ns. Level 1 is off-chip cache. The off-chip cache hit rate is 96%, hit time is 10 ns. Level 2 is main memory. The main memory hit rate is 99.8%, hit time is 60 ns. Level 3 is disk (miss penalty2 is disk access time given the disk is the highest tier, which is lengthy). Memory miss penalty or Disk access time is 10 micro sec = 10,000 ns. Please note memory miss penalty is the same as the disk hit time, or disk access time, given the disk is the lowest tier of the memory hierarchy. a. What is the AMAT when the main memory is the last tier of your memory hierarchy? (On- chip cache -> off-chip cache -> main memory) b. What is the AMAT when the disk is the last tier of your memory hierarchy? (On-chip cache - > off-chip cache -> main memory -> disk)
Transcribed Image Text:Calculate the Average memory access time for the following memory hierarchy. Where AMAT = Hit Time + Miss Rate * Miss Penalty AMAT = hit time0 + miss rate0* (hit time1 + miss rate1* (hit time2 + miss rate2 * miss penalty2)) Level O is on-chip cache. The on-chip cache hit rate is 90%, hit time is 5 ns. Level 1 is off-chip cache. The off-chip cache hit rate is 96%, hit time is 10 ns. Level 2 is main memory. The main memory hit rate is 99.8%, hit time is 60 ns. Level 3 is disk (miss penalty2 is disk access time given the disk is the highest tier, which is lengthy). Memory miss penalty or Disk access time is 10 micro sec = 10,000 ns. Please note memory miss penalty is the same as the disk hit time, or disk access time, given the disk is the lowest tier of the memory hierarchy. a. What is the AMAT when the main memory is the last tier of your memory hierarchy? (On- chip cache -> off-chip cache -> main memory) b. What is the AMAT when the disk is the last tier of your memory hierarchy? (On-chip cache - > off-chip cache -> main memory -> disk)
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