Answered: If memory access time = 20ons and…

If memory access time = 20ons and Average page fault time = 8 ms. If I access out of 1000 Causes a page favet. Find effective access time. E-A-T = (1-P) xmemory access time & PX Page fault time

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: Suppose there is a paging system with a translation lookaside buffer. Assuming that the entire page…

Q: A paged memory is shared by two processes, p1 and p2. 16 24 15 1 3 -2 9 -3 17 -12 25 -3 18 -16 19 10…

A: Answer

Q: Write an MPI program segment for all-to-all personalized broadcast on a ring of p processors, each…

A: MPI program for ring topology to send and receive values

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

A: Question. Let the page fault service time be 10ms in a computer with average memory access time…

Q: Suppose a byte-addressable memory with 4 frames of size 32 bytes each and a paged virtual memory…

A: I will explain it in details,

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: lol 0-2 14534561756132652152 lol Number of page faults= Effective Access Time = 14534561756132652152…

A: Optimal replacement:- Optimal page replacement is a page replacement algorithm used in computer…

Q: Consider two cache organization which are byte addressable. In both cache organization cache size is…

A: Solution is given below.

Q: On a 32-bit processor, a baggy bounds scheme is expected to set all of the bounds table entries to…

A: please see the next step for solution

Q: We have a system that uses virtual memory and a swap partition. The virtual address space consists…

Q: 200 KB which has ent size is 256 KB. is the correct nur

Q: For each of the following page replacement policies, list the total number of page faults and fill…

A: Answer:Clock page replacement:

Q: Consider a process of 200 KB which has 2 segments each segment size is 256 KB. Which of the…

A: In segmented paging, the overhead is the amount of memory required for the segment table and page…

Q: We have demand-paged memory with single-level paging and the page-table is stored in memory. It…

A: Dear Student, The required answer to your question is given below -

Q: Because HTTP is stateless, if client requests an identical web URL it previously requested within…

A: Both mcq answers are given below in detail

Q: The memory access problem of locating page-table in paging can be solved by: O Page-table base…

A: The correct choice is: translation lookaside buffer

Q: nsider a paging system with the page table stored in associative registers. emory reference takes…

A: paging system with the page table stored in associative registers. If a memory reference takes 200…

Q: In the demand paging memory, a page table is held in registers. If it takes 1000 ms to service a…

A: GIVEN:

Q: Assume that a main memory with only 4 frames each of 16 bytes is initially empty. The CPU generates…

A: Optimal Page replacement Algorithm:- In an operating system, the page fault occurs whenever a…

Q: For the page replacement mechanism, Consider the page reference string 5, 7, 1, 3, 7, 0, 7, 4, 3, 0,…

A: Let's understand step by step : Answer (1) : FIFO Algorithm : FIFO stands for First In First Out…

Q: Given an O/S which has divided all of main memory into 3 frames; if this O/S uses the LRU algorithm…

A: The Least Recently Used (LRU) algorithm is a page replacement algorithm used in computer operating…

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: La de p f serieebe 10s cter w nengr ey ato e hg Ifne pgr f i g d nery f ery acs What efltcce tefothe…

A: Hi there, Please find your solution below, I hope you would find my solution useful and helpful.…

Q: A system uses 3 page frames for storing process pages in main memory. It uses the page replacement…

A: In page replacement policy algorithm, pages are replaced which would not be used for the longest…

Q: mgsters hold the most active pagr entres and able take I80 s, what must the hit ratio be t ive ry If…

A: The hit ratio to be achieve an effective access time of 125ns is

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: In the demand paging memory, a page table is held in registers. If it takes 1000 ms to service a…

A: To find the effective access time for a page fault rate.

Q: s to service the e is available or ified. It takes 15 ified. Assuming = 1 ms and 70% s modified. The…

Q: Also calculate the hit ratio , miss ratio, page faults, page fault rate.

A: Given Page Replacement is A new page replaces the page that has not been referred by the CPU for the…

Q: Consider a system with 36-bit virtual addresses, 32-bit physical addresses, and 4KB pages. The…

A: Given,The virtual Address space = 236 bytesPage size = 212 bytesPages = 236 / 212 = 224 Pages

Q: Assume that we have a paged memory system with a cache to hold the most active page table ent Ons to…

A: Cache access time = 20 ns = 0.02 microsecond Memory access time = 1 microsecond

Q: Translate the following virtual addresses to physical addresses, and show how you obtain the…

A: - We need to get the physical address for the virtual addresses provided.

Q: If an operating system uses the FIFO page replacement algorithm and the main memory has only 3…

A: Hello student Greetings Hope you are doing great. Thank You!!! FIFO (First-In, First-Out) is a…

Concept explainers

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:

Question

100%

10 If memory access time = 200ns and Average page fault time = 8 ms.
If I access out of 1000 Causes a page favet. Find effective access
time.
E-A-T = (1-P) xmemory access time + PX Doge fault time

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Consider a swapping system in which memory consists of the following hole sizes inmemory order: 12 MB, 4 MB, 20 MB, 12 MB,18 MB, 7 MB, 9 MB and 12 MB.Which hole is taken for successive segment requests of(a) 10MB(b) 15MB(c) 9 MBfor first fit, worst fit, and next fit?
For each of the following page replacement policies, list the total number of page faults and fill in the contents ofthe page frames of memory after each memory reference.
Solve it ,if you are 100% sure , else i will downvote.
Consider a system that implements demand paging without a TLB. The single-level page table is held in memory, and we assume that there are no free frames. Each memory access requires 100 nanoseconds. It takes 6 additional milliseconds to handle a page fault if the victim page is not “dirty” or 12 additional milliseconds if the victim page is “dirty”. Experiments show that the probability of page faulting is 0.00003 (i.e., 0.003% chance) and that the average memory access time is 400ns. What is the percent chance that a page is dirty at the time it is evicted? Hint: Call the “being dirty” probability d and write a simple equation that gives the average data access time as a function of d. Solve for d (the result should be a number between 0 and 1, which you then convert to a percentage).
A demand - paging uses a TLB (Translation Look - aside Buffer) and single level page table stored in main memory. The memory access time is 5 us and the page fault service time is 25 ms. If 70% of access is in TLB with no page fault and of the remaining, 20% is not present in main memory. The effective memory access time in ms is (Write answer up to two decimal places)
Give a comparison of FIFO, LRU and OPTIMAL algorithms in term of Page faults with three and four frames in each case for the reference string of pages duly demanded in Main Memory. Reference String: 2, 3, 3, 2, 1, 4, 0, 0, 3, 2, 1, 1, 2, 3, 4
Consider an 8-bit memory architecture that uses a single level page table with 4-bit page numbers and implements demand paging and copy-on-write. Consider the following page table where the pages are numbered from the bottom up. I.e., the bottom entry corresponds to page 0. Valid Access Frame 1 RW Ox3 RW Ox0 1 RW Ox1 RW RW RW RW RW RW RW 1 RW Ox7 1 RW Ox8 RW Ox2 RX Ox4 RX Ox9 RX Ox4 In the worst case, how many pages will need to be copied as a result of this process' execution? O All of them
Consider a system that implements demand paging without a TLB. The single-level page table is held in memory, and we assume that there are no free frames. Each memory access requires 100 nanoseconds. It takes 6 additional milliseconds to handle a page fault if the victim page is not "dirty" or 12 additional milliseconds if the victim page is "dirty". Experiments show that the probability of page faulting is 0.00003 (i.e., 0.03% chance) and that the average memory access time is 400ns. What is the percent chance that a page is dirty at the time it is evicted? Hint: Call the "being dirty" probability d and write a simple equation that gives the average data access time as a function of d. Solve for d (the result should be a number between 0 and 1, which you then convert to a percentage).
Assume we have a demand-paged memory. The page table is held in registers. It takes 9 milliseconds to service a page fault if an empty page is available or the replaced page is not modified, and 22 milliseconds if the replaced page is modified. Memory access time is 100 nanoseconds. Assume that the page to be replaced is modified 80 percent of the time. What is the maximum acceptable page-fault rate for an effective access time of no more than 250 nanoseconds?