Assume a computer has on-chip and off-chip caches, main memory and virtual memory. Assume the following hit rates and access times: on-chip cache 95%, 1 ns, off-chip cache 99%, 10 ns, main memory: X%, 50 ns, virtual memory: 100%, 2.5 ms. Assume that an acceptance effective access time is 1.6 ns. What should X be (the percentage of page faults) to ensure that EAT is no worse than 1.6 ns?

Q: n paging (given diagram), for CPU request there are two access time one for accessing page table and…

A: paging is the method of retrieving the process from secondary storage into main memory, where as…

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Q: QUESTION 4 Consider the two memory access scenario A & B: A: The memory access request results in a…

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A:

Q: 1. Given the hit ratio of level-1 cache is 0.1 and the access time is 1, the hit ratio of level-2…

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Q: Consider a demand-paging system with a paging disk that has an average access time of 20…

A: A) When it's not a page fault, total time is 3*memory access time When it's a page fault, total time…

Q: Q2: Assume the access time of a cache memory is one tenth of the main memory access time. The…

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Q: Solve.  1.Consider a system with 2 level cache. Access times of Level 1, Level 2 cache and main…

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Q: Q1- An 1MB process need to be executed by the operating system. The size of the available memory for…

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Q: Q3 Consider a swapping system in which main memory contains the following hole sizes in memory…

A: best fit is nothing but which finds the block near to the best actual size needed.

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Q: . Assume a computer has on-chip and off-chip caches, main memory and virtual memory. Assume the…

A: Given Data : On chip cache hit rate(oh) =  0.95 Off chip cache hit rate(fh) =  0.99 Total cache…

Q: Assume that a computer system is having 4-page frames for holding process pages in the main memory.…

A: Assume that a computer system is having 4-page frames for holding process pages in the main memory.…

Q: Consider a direct mapped cache with 8 cache blocks (0-7). If the memory block requests are in the…

A: I have Provided this answer with full description in step-2.

Q: Assume we have a direct-mapped cache with 64 blocks and each block consists of 16 bytes, the cache…

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Q: Consider a memory system with cache access time of 0.1 us and memory access time (time needed to…

A:

Q: Consider a two level cache system. For 100 memory references, 20 misses in the first lyel cache and…

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Q: 1. Which algorithm chooses the page that has not been used for the longest period of time whenever…

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Q: A computer has an average main memory access time of 60 ns. We want to reduce this time to 20 ns by…

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A: Priority Scheduling is a method of scheduling processes that is based on priority.

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Q: Consider a fully associative cache with a total of 8 cache blocks (0-7). The main memory block…

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Q: Consider the following string of page references 7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2. Show the…

A: Since you have posted a question with multiple sub-parts, according to the company's policy we will…

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A:

Q: 11. Suppose the time to service a page fault is on the average 10 milliseconds, while a memory…

A: Introduction

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Q: In paging (given diagram), for CPU request there are two access time one for accessing page table…

A: Actually, given information: In paging (given diagram), for CPU request there are two access time…

Q: Computer Science Question: Consider a virtual cylinder identical to the one shown the figure below…

A: Below is the answer to above question. I hope this will be helpful.

Q: Operating System: Consider a demand-paging system with a paging disk. The average disk access time…

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A:

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A: solution :

Q: In paging (given diagram), for CPU request there are two access time one for accessing page table…

A: In paging (given diagram), for CPU request there are two access time one for accessing page table…

Q: In paging (given diagram), for CPU request there are two access time one for accessing page table…

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Fundamentals of memory

A collection of connected storage devices form the memory unit. It is a space to store data and instructions required for processing. Information is stored in a memory unit in the form of bits. There are two types of memory namely: