Employee Employee number name (6) (20) Designation Address (10) (30) Basic pay (6) (20) Allowances Deductions Number of platters Number of cylinders Number of tracks (surfaces)/cylinder Number of sectors/track Number of bytes/sector Maximum seek time Average seek time Maximum Latency time Average latency time Time to read/write a sector 6 800 10 50 512 50 ms 25 ms 16.66 ms 8.33 ms 0.33 ms (20) Table P18.1. Specifications of a typical disk storage system Total salary (6)
Employee Employee number name (6) (20) Designation Address (10) (30) Basic pay (6) (20) Allowances Deductions Number of platters Number of cylinders Number of tracks (surfaces)/cylinder Number of sectors/track Number of bytes/sector Maximum seek time Average seek time Maximum Latency time Average latency time Time to read/write a sector 6 800 10 50 512 50 ms 25 ms 16.66 ms 8.33 ms 0.33 ms (20) Table P18.1. Specifications of a typical disk storage system Total salary (6)
Chapter13: File Input And Output
Section: Chapter Questions
Problem 9RQ
Related questions
Question
Answer the following questions for the personnel file using Table P18.1: Records from the employee file must be read, and the total compensation for each employee must be estimated using the basic pay, allowances, and deductions. Assume that the processing for a single record takes 200 s of CPU time. The revised records must be written to disc.
a) What is the time taken to process a sector of records?
b) Having processed a sector of records, what is the time taken to process all records in the very next sector?
c) What is the time taken to process the records, in all sectors of a track, assuming that the sectors are continuously read?
![Employee Employee
number
name
(6)
(20)
Basic
pay
(10) (30) (6)
Designation Address
Number of platters
Number of cylinders
Allowances Deductions
Number of tracks (surfaces)/cylinder
Number of sectors/track
Number of bytes/sector
Maximum seek time
Average seek time
Maximum Latency time
Average latency time
Time to read/write a sector
(20)
6
800
10
50
512
50 ms
25 ms
16.66 ms
8.33 ms
0.33 ms
(20)
Table P18.1. Specifications of a typical disk storage system
Total
salary
(6)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff9911953-2099-4836-a80d-8e56b2f049cc%2F44676bf4-4641-4ecc-bd82-57fa6c9c1b91%2Fusfp53g_processed.png&w=3840&q=75)
Transcribed Image Text:Employee Employee
number
name
(6)
(20)
Basic
pay
(10) (30) (6)
Designation Address
Number of platters
Number of cylinders
Allowances Deductions
Number of tracks (surfaces)/cylinder
Number of sectors/track
Number of bytes/sector
Maximum seek time
Average seek time
Maximum Latency time
Average latency time
Time to read/write a sector
(20)
6
800
10
50
512
50 ms
25 ms
16.66 ms
8.33 ms
0.33 ms
(20)
Table P18.1. Specifications of a typical disk storage system
Total
salary
(6)
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