q7 An operating system uses shortest remainingtime (SRT) scheduling algorithm. Consider thearrival times and execution time for thefollowing processes:ArrivalExecutionProcesTimeTimeP120P21525P33010P44515What is the sum of waiting time for allprocesses?

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Engineering

Computer Science

remair consider

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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Concept explainers

Storage Devices

Storage devices can store digital information/data and applications (in the form of audio, video, image, etc.) to process the result of any computational work. They are a kind of computer hardware that stores information and instruction to be processed. A storage unit is a part of a computer system. Every computer has a storage device. The storage devices work as a memory. They are also known as a storage medium, digital storage, or storage media, which temporarily or permanently store information. They are used either internally or externally in the computer system, server, or any computation device to hold the information. Examples include a pen drive, CD, DVD, floppy disk, memory card and so forth.

Question

An operating system uses shortest remaining
time (SRT) scheduling algorithm. Consider the
arrival times and execution time for the
following processes:
Arrival
Execution
Proces
Time
Time
P1
20
P2
15
25
P3
30
10
P4
45
15
What is the sum of waiting time for all
processes?

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