Job scheduling: Consider the problem of scheduling n jobs of known durations t1, t2, . . ., tn for execution by a single processor. The jobs can be executed in any order, one job at a time. You want to find a schedule that minimizes the total time spent by all the jobs in the system. (The time spent by one job in the system is the sum of the time spent by this job in waiting plus the time spent on its execution.) Design a greedy algorithm for this problem. Does the greedy algorithm always yield an optimal solution?

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
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Job scheduling: Consider the problem of scheduling n jobs of known
durations t1, t2,. . ., tn for execution by a single processor. The jobs can be
executed in any order, one job at a time. You want to find a schedule that
minimizes the total time spent by all the jobs in the system. (The time spent
by one job in the system is the sum of the time spent by this job in waiting
plus the time spent on its execution.) Design a greedy algorithm for this
problem. Does the greedy algorithm always yield an optimal solution?
Transcribed Image Text:Job scheduling: Consider the problem of scheduling n jobs of known durations t1, t2,. . ., tn for execution by a single processor. The jobs can be executed in any order, one job at a time. You want to find a schedule that minimizes the total time spent by all the jobs in the system. (The time spent by one job in the system is the sum of the time spent by this job in waiting plus the time spent on its execution.) Design a greedy algorithm for this problem. Does the greedy algorithm always yield an optimal solution?
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