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

Design and implement an algorithm that will efficiently

Design and implement an algorithm that will efficiently search a given text for a particular keyword or pattern and record the number of times the keyword or pattern is found. Design a main program that calls the procedu ...

1 write a program that draws two solid squares one in pink

1. Write a program that draws two solid squares: one in pink and one in purple. Use a standard color for one of them and a custom color for the other. Provide a class TwoSquareViewer and a class TwoSquareComponent. 2. Wr ...

Compute-intensive communicating processes which transfer a

Compute-intensive communicating processes. which transfer a total of 100 characters during their operation. Assume that the time-sharing system time-slices between these processes with a 1-S quantum; that is, an alarm-cl ...

Both turtles and patches can create visual images in the

Both turtles and patches can create visual images in the NetLogo view. Create a turtle and have it draw a circle (using the PEN-DOWN command). Create the outline of a circle with patches without using a turtle pen. Write ...

1 explain why an mospf router can create the shortest path

1. Explain why an MOSPF router can create the shortest path with the source as the root in one step, but DVMRP needs three steps to do so. 2. Explain why PIM is called Protocol Independent Multicast. 3. Which version of ...

A company develops a new security product using the extreme

A company develops a new security product using the extreme programming software development methodology. Programmers code, then test, then add more code, then test, and continue this iteration. Every day, they test the ...

1 prove that any file in the dgux system with a link count

1. Prove that any file in the DG/UX system with a link count greater than 1 must have an explicit MAC label. 2. In the DG/UX system, why is the virus prevention region below the user region? 3. In the DG/UX system, why i ...

Consider the vector adt from programming project 21a

Consider the Vector ADT from Programming Project 2.1: (a) Implement a new version of the ADT using an unsorted linked list. (b) Evaluate your new implementation to determine the worst case run time of each operation. (c) ...

For the single neuron model that we saw in class compute

For the single neuron model that we saw in class compute the gradient update for the weights, whenthe nonlinearity is a rectified unit:y(a) = a, a > 0 y(a)=0, a ≤ 0

Assignmentlego mindstorms line following algorithmlego

Assignment Lego Mindstorms Line following algorithm Lego Mindstorms have EV3 robots which can be modified to do assignments, one time or over and over. We utilize the software Lego Mindstorms which has in-fabricate alter ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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