If memory access time is 200 nano seconds and average page-fault service time = 8 milliseconds, and if you want a performance degradation of less than 20 percent, in at least how many memory accesses a page fault may be endured to occur?

Q: In a paged memory, the page hit ratio is 0.40. The time required to access a page in secondary…

A: Introduction :       Given,         paged memory         page hit ratio=0.40         second memory…

Q: (b) Consider a system with multiple level memory as in Table Q520. Table Q52 (i) (ii) Component…

A: Please refer below for your reference: The average Memory access time for this system is given as :…

Q: A computer has a level 1 cache with an access time of 2 cycles and an average hit rate of 90% and…

A: we are not allow to gave nswer for all as per gideline , so please reupload rest of them:

Q: In a three level memory hierarchy, the access time of cache, main and virtual memory is 5…

A: data: Cache = T1 = 5 ns Hit ratio = p = 0.8 Miss ratio = 1 - p = 1 - 0.8 = 0.2 Main memory Main…

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…

A: Given that, level-1 cache Hit ratio = 0.1 level-1 cache access time=1 level-2 cache hit ratio= 0.2…

Q: empty page is available or the replaced page is not modified, and 20 percent of the time. What is…

A: In this question, we are asked to find out maximum page fault rate with the given data Given: Time…

Q: Problem: Suppose that a computer has a processor with two L1 caches, one for instructions and one…

A: Basics :- Consider a system with only one level of cache. In this case, the miss penalty…

Q: a cache access requires one clock cycle and dealing with cache misses requires an additional five…

A: The cache memory is a small sized memory which provides fast access to data. The data that is…

Q: Calculate the effective access time for a demand-paged memory given a memory access time of 100…

A: Effective memory access time = page fault rate * {page fault service time + access time without page…

Q: Assume the cache miss penalty is 100 clock cycles and all instructions normally take 1.0 clock…

A: The Answer is

Q: Write down the expression for the average memory access time for a system with two levels of caches…

A: Step 1:  As mentioned in the question, we have two levels of caches. So let us assume, 1st level of…

Q: Assume that we have a demand-paged memory. The page table is held in registers. It takes 10…

A: Here is the solution:

Q: Consider a cache memory with blocks of 23 = words (1 word = 4 bytes) , with a bus Main Memory -…

A: Given Data : Block size = 8 words 1 word = 4 bytes Cache bits = 32 bits Address sending time = 1…

Q: Assume that we have a demand-paged memory. The page table is held in registers. It takes 8…

A: Introduction :Given , Page fault service time = 8 ms service time if page is modified = 20 ms memory…

Q: Assume a process containing 5 pages with 1024 bytes per page and physical memory with 10 page…

A:

Q: If memory read cycle takes 100 ns and a cache read cycle takes 20 ns, then for four continuous…

A: Memory Read cycle : 100nsCache Read cycle : 20ns Four continuous reference is done - one reference…

Q: Let's say in a system, it takes 8 milliseconds to service a page fault if an empty page is available…

A: Introduction :Given , Page fault service time = 8 ms service time if page is modified = 20 ms memory…

Q: Need correct answer only upvote otherwise downvotes If the main memory access time is Ims and page…

A: The answer for effective access time is

Q: The arrival time for processes A,B,C and D is 0,2,4, and 5 while the required CPU burst time is…

A: Given data for calculating average turn-around time are, Arrival time for the processes A,B,C,D…

Q: Let the page fault service time be 10 ms in a computer with average memory access time being 20 ns.…

A: Correct answer is 30 ns

Q: Assume we have a demand-paged memory. The page table is held in registers. It takes 3 milliseconds…

A: Effective Access Time =  (1 - p) * (memory access time) + p * (1 - pm) * (page fault service with no…

Q: What is the effective memory access time if the memory access time is 450 ns and a page fault takes…

A: Effective access time The 'effective access time' is essentially the (weighted) average time it…

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

A: Introduction :

Q: Consider a cache memory with blocks of 23 words (1 word = 4 bytes) , with a bus Main Memory - Cache…

A: SUMMARY: -Hence, we discussed all the points

Q: If memory access time is 200 nanoseconds and average page-fault service time is 8 milliseconds, and…

A: If memory access time is 200 nanoseconds and average page-fault service time is 8 milliseconds,…

Q: Suppose the cache access time is 1 ns, main memory access time is 100 ns and the cache hit rate is…

A: Effective Memory Time = cache hit rate * cache access time + cache miss rate ( cache access time +…

Q: onsider a system with 3 I/O devices Printer (priority of 2) Disk (priority of 4) Communication line…

A: Interrupt Interrupt is a signal raised by software or hardware to get immediate attention of…

Q: You are given the following data about a virtual memory system: (a)The TLB can hold 1024 entries and…

A: consider the memory access time =1 clock cycle or 1 ns. we can write effective address translation…

Q: Let the page fault service time be 10 ms in a computer with average memory access time being 20 ns.…

A: It is given that viable memory access time without page shortcoming = 20 ns. Presently, subbing…

Q: Consider a 512 KB cache system used in our laptop. The access time for the cache is 25 ns, and the…

A: Your answer is given below in detail.

Q: Consider a computer system with DMA support. The DMA module is transferring one 8-bit character in…

A: Introduction :given , computer system with DMA support1 char(8 bits) take = 1 clock cyclefrequency =…

Q: n Paging, for CPU requests there are two access times, one for accessing page table and one for…

A: In Paging, for CPU requests there are two access times, one for accessing page table and one for…

Q: pose a computer using fully associative cache has 2MB of byte-addressable main memory and a he of…

A: A) Total number of main memory block = Main memory size /block size = 2^21/2^5 = 2^16 B) Size of…

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

A: Virtual memory is a popular technique used in the operating systems (OS) of computers. Virtual…

Q: Consider a system with 4GB of memory address space. Assuming a write-back policy and block size of…

A: Memory size = 32 bits.  A.  Total # of cache blocks = 2K So index bits = 11 bits Offset bits = 5…

Q: A memory system consists of a cache with a hit time of 5 nsec, if the miss penalty is 100 nsec and…

A: Here we calculate the Cache hit rate by using the given information and correct the answer , so the…

Q: Consider a swapping system in which memory consists of the following hole sizes in memory order: 12…

A: Given memory hole sizes are, 12 MB, 4 MB, 20 MB, 12 MB, 18 MB, 7 MB, 9 MB and 12 MB Given segment…

Q: Assume the following parameters for a shadow paging system. TLB Misses per1000 Instructions NPT…

A:

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

A: Introduction

Q: Assuming a base CPI of 1.0 without any memory stalls, what is the total CPI for P1 with the addition…

A: Given: Base CPI=1.0 Assumption: Assume that main memory accesses take 70 ns. Assume that, number of…

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

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

Q: (b) Consider a system with multiple level memory as in Table Q52 Table Q52 (i) (ii) Component Cache…

A: Please refer below for your reference: The average Memory access time for this system is given as :…

Q: Assume a swapping system in which memory consists of the following hole sizes in memory and in order…

A: Lets see the detailed answer to this question.

Q: 1 cache is 0.5 and the access time is 50ns, the hit ratio of level-2 cache is 0.3 and the access…

A: 5. Given that the hit ratio of level-1 cache is 0.5 and the access time is 50ns, the hit ratio of…

Q: If a processor has a CPI of 2 without any memory stalls, and the miss penalty is 100 cycles for all…

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: Given that the hit ratio of level-1 cache is 0.5 and the access time is 50ns, the hit ratio of…

A: Answer is given below.     The level 1 cache hit rate is 0.5, the access time is 50 ns, the level 2…

Q: You are given the following data about a virtual memory system: (a) The TLB can hold 512 entries and…

A: The chance of a hit is 0.99 for the TLB and the access time for TLB is 1 nsec. So, the term will be…

Q: Consider a process with 4GB logical memory, 4KB page size, and a page table whose entry is 4B each.…

A: We are given logical memory size, page size and size of each page table entry. We need to find which…

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.