Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Engineering Expert

problem 1

The performance of a file system depends on the cache hit rate (fraction of blocks found in the cache). If it takes 1 msec to satisfy a request from cache, however 40 msec to satisfy a request if a disk read is needed, provide a formula for mean time required to satisfy a request if the hit rate is h. Plot this function for values of h changing from 0 to 1.0.

problem 2

A UNIX file system has 1-KB blocks and 4-byte disk addresses. What is maximum file size if i-nodes hold 10 direct entries, and one single, triple, and double indirect entry each?

problem 3

How many disk operations are needed to fetch i-node for the file /usr/ast/courses/os/handout.t? Suppose that i-node for the root directory is in memory, but nothing else along the path is in memory. Also suppose that all directories fit in one disk block.

problem 4

Illustrate when you run unlink () operation to remove a file on ext3 file system. Be specific about what disk blocks have to be written where in what order. Describe your assumptions.

problem 5

The ext3 fsck program recovers a crashed ext3 file system through scanning the journal of this file system and replaying each record in journal. The ext3 fsck program also clears the journal to save space for new journal records. Is there a strict order between the two steps? Why or why not?

problem 6

In the software v.s. hardware virtualization paper, the author discussed the problem with popfl in Section 4.4. What exactly is the problem?

problem 7

As the number of cores keeps rising, the probability that some cores fail at any given moment also raises. What are the implications of this trend on Barrelfish?

problem 8

prepare pseudo code to execute the pthread_create wrapper of the Tern memoizer. Note you need to describe your data structure for maintaining deterministic thread IDs. In addition, think of what might go wrong when the child thread calls self().

Computer Engineering, Engineering

  • Category:- Computer Engineering
  • Reference No.:- M91503

Have any Question? 


Related Questions in Computer Engineering

1 write a program holleprinter that switches the letters e

1. Write a program HollePrinter that switches the letters "e" and "o" in a string. Use the replace method repeatedly. Demonstrate that the string "Hello, World!" turns into "Holle, Werld!" 2. Write a graphics program tha ...

1 run the life model several times what is the minimum

1. Run the Life model several times. What is the minimum number of ticks before the model stabilizes? What is the maximum number of ticks you can find before it stabilizes? Is it possible for the model to never come to a ...

You are managing an insurance claim processing process and

You are managing an insurance claim processing process, and you have just been informed that the repairer, Chris Gray, will not be available for work after June 7, 2011, for several days. You need to set a constraint on ...

Overview of business casealive amp boating aampb is a small

Overview of business case: Alive & Boating (A&B) is a small start-up company that sells small boats in Wagga. A&B keeps its models in several showrooms across the city. At this stage customers cannot view the available m ...

1 how does a signature-based idps differ from a

1. How does a signature-based IDPS differ from a behavior-based IDPS? 2. What is a monitoring (or SPAN) port? What is it used for? 3. List and describe the three control strategies proposed for IDPS control.

Define the group of each of the following multicast

Define the group of each of the following multicast addresses (local network control block, internetwork control block, SSM block, Glop block, or administratively scoped block): a. 224.0.1.7 b. 232.7.14.8 c. 239.14.10.12

1 why is it important to explore divisional and group

1. Why is it important to explore divisional and group structures of an organization when starting a network design project? 2. The "Networks Offer a Service" section mentioned ITSM and ITIL. Research these topics in mor ...

1 which law was specifically created to deal with

1. Which law was specifically created to deal with encryption policy in the United States? 2. What is privacy in an information security context? 3. What is another name for the Kennedy-Kassebaum Act (1996), and why is i ...

Prove that the magnitude of determinant of a unitary

Prove that the magnitude of determinant of a unitary transform is unity. Also show that all the eigenvalues of a unitary matrix have unity magnitude Show that the entropy of an N x 1 Gaussian random vector u with mean p. ...

1 you know that the domain name of a computer is

1. You know that the domain name of a computer is "aBusiness.com". Write a statement in Java to create an InetAddress object associated with that computer. 2. You know that the IP address of a computer is "23.14.76.44". ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen