Question: Consider a disk queue with I/O requests to blocks on the following cylinders 30, 134, 28, 15, 56, 85, 126, 80, 60, 8. Currently

Consider a disk queue with I/O requests to blocks on the following cylinders — 30, 134, 28, 15, 56, 85, 126, 80, 60, 8. Currently the head is at cylinder 52. The system uses the SSTF disk scheduling algorithm. Assume that the range of cylinder numbers on the disk is from 0 to 199. Calculate the total head movement for servicing all the I/O requests. Clearly show the sequence in which the I/O requests are serviced. Also, clearly show the calculations. This is an upload type question.

Step by Step Solution

★★★★★

3.41 Rating (148 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The detailed ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Operating System Questions!

The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-5. Ivan's grandfather died and left a portfolio of municipal bonds. In 2012, they pay Ivan...

The request queue for disk cylinders is 78, 137, 156, 120, 103, 87, 177, 65. Initially, the read-write head is at cylinder 100. Calculate the total head movements using Shortest Seek Time First...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

Grand Canyon Manufacturing Inc. produces and sells a product with a price of $100 per unit. The following cost data have been prepared for its estimated upper and lower limits of activity: Required:...

Given a randomized block experiment with five groups and seven blocks, answer the following: a. How many degrees of freedom are there in determining the among-group variation? b. How many degrees of...

=+2. The traditional channel for consumer goods runs from producer to wholesaler to retailer to user. With a classmate, select a product from the following list (or choose one of your own) and create...

Respond that the following statements are TRUE or FALSE: 1) Fixed cost per unit is assumed to be constant within a particular relevant range of activity. 2) Total variable costs change in direct...

1. Auditors initial response to computer systems was to audit around the computer. This strategy is least likely to be successful in an audit of a. A batch processing system for payroll. b. A card-...

Consider the following information taken from the stockholders equity section: Required: 1. Calculate the following (Note: Round answers to two decimal places): Stockholder Payout Stockholder...

Assume that you have just been hired as business manager of Campus Deli (CD), which is located adjacent to the campus. Sales were $1,100,000 last year, variable costs were 60% of sales, and fixed...

please list and describe the different responsibility centers in very basic terms.

Hardy Life Insurance Company intends to launch Revolution, a new enterprise management system, in its offices nationwide. The software includes human resource management, finance, and planning...

At December 31, 2023, Cord Company's plant asset and accumulated depreciation and amortization accounts had balances as follows: Category Land Land improvements Buildings Equipment Automobiles and...

Ye' Olde Barrel Shop sells oak barrels to a local winery. The Master Cooper would like to reduce her oak lumber inventory by determining the optimal number of oak boards to order. The annual demand...

The first use of aircraft for moving materials occurred in India, in 1911, when 6,500 pieces of mail were carried for a distance of five miles. Two other early mail flights, taking place in the same...

Many people who travel to the Czech Republic come back with tales of the history, people, majesty of the country, and stories of the beer that to some is the heart of the country. A spa in The Czech...

Bike Friday is a small manufacturer of high-end folding travel bicycles. The bikes can be folded and carried in a Travelcase. The controller of Bike Friday is looking into ways to cut costs. The...

a. What is meant by the term tax haven? b. What are the desired characteristics for a country if it expects to be used as a tax haven? c. What are the advantages leading an MNE to use a tax haven...

Consider a setting where processors are not associated with unique identifiers but the total number of processors is known and the processors are organized along a bidirectional ring. Is it possible...

Why is it important for the scheduler to distinguish I/O-bound programs from CPU-bound programs?

Would you expect JPM Chase or Merrill Lynch to rely more on VAR? (JPM Chase takes large proprietary trading positions; Merrill largely hedges its risks.)

Prepare a run chart for the number of defective computer monitors produced in a plant shown below. Workers are given a 15-minute break at 10:15 A.M. and 3:15 P.M., and a lunch break at noon. What can...

Visit http://www.trilliumhealthcentre.org/newsroom/news_releaseS',lSeptember9_2008.html and http://www.trilliumhealthcentre.org/quality_safe_care/index.html, and identify how Trillium Health Centres...

Prepare a run chart for the following 911 call data. Use five-minute intervals (i.e., count the calls received in each five-minute interval. Use intervals of 04,5-9, etc.). Note: Two or more calls...