Find out the average waiting time, average response time and average turnaround time of the following processes using a. Shortest Remaining Time First Scheduling b. Preemptive Priority Scheduling Process Arrival Time Priority Execution Time P1 0 2 7 P2 1 0 4 P3 1 1 3 P4 3 0 2
Find out the average waiting time, average response time and average turnaround time of the following processes using a. Shortest Remaining Time First Scheduling b. Preemptive Priority Scheduling Process Arrival Time Priority Execution Time P1 0 2 7 P2 1 0 4 P3 1 1 3 P4 3 0 2
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
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Question
Find out the average waiting time, average response time and average turnaround
time of the following processes using
a. Shortest Remaining Time First Scheduling
b. Preemptive Priority Scheduling
Process Arrival Time Priority Execution Time
P1 0 2 7
P2 1 0 4
P3 1 1 3
P4 3 0 2
b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132,
24, 134, 75, 77. The head is initially at cylinder number 63. The cylinders are
numbered from 0 to 199.
Find out the total head movements using the following
a) First Come-First Serve (FCFS)
b) Shortest Seek Time First (SSTF)
c) Elevator (SCAN)
d) Circular LOOK (C-LOOK)
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