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Consider a computer with 250 MB of available memory (not used by the OS), a mouse, a keyboard, and a printer. Three programs, Job1, Job2, and Job3, are submitted for execution at 5 seconds, 10 seconds, and 20 seconds, respectively. We assume minimal processor requirements for Job1 and Job2, and continuous printer use by Job2, and keyboard and mouse use by Jobl. In a simple batch environment, these jobs will be executed in sequence. Assuming Jobl completes in 10 seconds, Job2 must wait until the 10 seconds are over and then completes 15 seconds after that. Job3 begins after 30 seconds and completes at 35 seconds. Now, suppose that the jobs are run concurrently under a multiprogramming OS. The memory requirements for Job1, Job2, and Job3 are 100 Mb, 150 Mb, and 70 Mb, respectively.

Consider a computer with 250 MB of available memory (not used by the OS), a mouse, a keyboard, and a printer. Three programs, Job1, Job2, and Job3, are submitted for execution at 5 seconds, 10 seconds, and 20 seconds, respectively. We assume minimal processor requirements for Job1 and Job2, and continuous printer use by Job2, and keyboard and mouse use by Jobl. In a simple batch environment, these jobs will be executed in sequence. Assuming Jobl completes in 10 seconds, Job2 must wait until the 10 seconds are over and then completes 15 seconds after that. Job3 begins after 30 seconds and completes at 35 seconds. Now, suppose that the jobs are run concurrently under a multiprogramming OS. The memory requirements for Job1, Job2, and Job3 are 100 Mb, 150 Mb, and 70 Mb, respectively.

Database System Concepts
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
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Fill out the table in part C

Consider a computer with 250 MB of available memory (not used by the OS), a mouse, a keyboard, and a printer. Three programs, Job1, Job2, and Job3, are submitted for execution at 5 seconds, 10 seconds, and 20 seconds, respectively. We assume minimal processor requirements for Job1 and Job2, and continuous printer use by Job2, and keyboard and mouse use by Jobl. In a simple batch environment, these jobs will be executed in sequence. Assuming Job1 completes in 10 seconds, Job2 must wait until the 10 seconds are over and then completes 15 seconds after that. Job3 begins after 30 seconds and completes at 35 seconds. Now, suppose that the jobs are run concurrently under a multiprogramming OS. The memory requirements for Jobl, Job2, and Job3 are 100 Mb, 150 Mb, and 70 Mb, respectively. (a) Fill out the following table: Type of job Submission time Duration Memory required Need mouse? Need printer? Need keyboard? Jobl Job2 MacBook Air Job3
Transcribed Image Text:Consider a computer with 250 MB of available memory (not used by the OS), a mouse, a keyboard, and a printer. Three programs, Job1, Job2, and Job3, are submitted for execution at 5 seconds, 10 seconds, and 20 seconds, respectively. We assume minimal processor requirements for Job1 and Job2, and continuous printer use by Job2, and keyboard and mouse use by Jobl. In a simple batch environment, these jobs will be executed in sequence. Assuming Job1 completes in 10 seconds, Job2 must wait until the 10 seconds are over and then completes 15 seconds after that. Job3 begins after 30 seconds and completes at 35 seconds. Now, suppose that the jobs are run concurrently under a multiprogramming OS. The memory requirements for Jobl, Job2, and Job3 are 100 Mb, 150 Mb, and 70 Mb, respectively. (a) Fill out the following table: Type of job Submission time Duration Memory required Need mouse? Need printer? Need keyboard? Jobl Job2 MacBook Air Job3
C (c) Fill out the following table: Processor utilization (%) Memory usage (%) Printer usage (%) Mouse usage (%) Keyboard usage (%) Elapsed Time Throughput Mean response time Ś Ռ. Uniprogramming MacBook Air Multiprogramming DIL
Transcribed Image Text:C (c) Fill out the following table: Processor utilization (%) Memory usage (%) Printer usage (%) Mouse usage (%) Keyboard usage (%) Elapsed Time Throughput Mean response time Ś Ռ. Uniprogramming MacBook Air Multiprogramming DIL
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