1.0 BASIC CONCEPTS 1.1 What is a Process? In computing‚ a process is an instance of a computer program that is being executed. It contains the program code and its current activity. Depending on the operating system (OSf a process may be made up of multiple threads of execution that execute instructions concurrently (Robbins‚ Kay. A. and Steven Robbins‚ 1996). A computer program is a passive collection of instructions; a process is the actual execution of those instructions. Several processes
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for i=1 to n do w[i]=w[i-1]+b[i] avg=avg+w[i] 7) tt=tt+avg 8) avg=avg/n 9) tt=tt/n 10) Print the average waiting time and turn around time 11) Stop 3) Aim: To write a c program to simulate First Come First Served(FCFS)algorithm using CPU Scheduling. Description: In FCFS algorithm‚ which ever the process that enters first in the ready queue will be allocated CPU first. Initially‚ the waiting time of the first process is kept zero. In this algorithm‚ the waiting time of the second process
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QUESTION 1 Scheduling is a fundamental operating systems function. Almost all computer resources are scheduled before use. CPU is one of the primary computer resources uses scheduling to design the processes in an operating system. The operating system can make the computer more productive by switching the CPU among processes called CPU scheduler. a) Explain what is CPU scheduler? State FOUR (4) goals of the CPU scheduler in an operating system. CPU scheduler is to selects from among
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Operating Systems (basics) 1 m 1. What is an operating system? co An operating system is a program that acts as an intermediary between the user and the computer hardware. The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner. It is a resource allocator responsible for allocating system resources and a control program which controls the operation of the computer hardware. on Z. 2. Why paging
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Mariano Marcos State University College of Arts and Sciences DEPARTMENT OF COMPUTER SCIENCE Batac City‚ Ilocos Norte 2096 GRADING SYSTEM TOPIC PROPOSAL Agrade Puyot Santiago Tapac July 2014 Background of the Study Grading System is a web-based application that can be used to create report cards‚ class grade list and roll sheet attendance report. Grading system is a system where the teachers encode grades‚ it allows immediate access to grades‚ and often has user friendly
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Operating Systems User OS Kernel & Device Drivers Interface Programs Deadlock Brian Mitchell (bmitchel@mcs.drexel.edu) Operating Systems 1 Deadlocks • Computer resources are full of resources that can only be used by one process at a time • Unpredictable results can occur if two or more processes use the same resource at the same time • OS control this problem by arbitrating resource requests • OS grant exclusive access and manage access to system resources • By allowing processes
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being used to manufacture both the custom and the standard pieces of furniture is definitely problematic. In order to meet the demands of each product‚ it is critical that scheduling be created in the most efficient of manners given the current constraints. Allocating all the resources properly is a key along with scheduling and layout. In regards to long term decisions‚ Mr. Thomas is going to have to decide if he is going to stay with the same facility‚ equipment‚ employees and so on. Without
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Internet Case for Chapter 15: Short-Term Scheduling Old Oregon Wood Store In 2002‚ George Brown started the Old Oregon Wood Store to manufacture Old Oregon tables. Each table is carefully constructed by hand using the highest quality oak. Old Oregon tables can support more than 500 pounds‚ and since the start of the Old Oregon Wood Store‚ not one table has been returned because of faulty workmanship or structural problems. In addition to being rugged‚ each table is beautifully finished using a
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1. Convert the project network to an Activity-on-node (AON) representation. What is the project completion time and critical path for this project ? Critical path is A-B‚ B-D‚ D-E 3. Suppose that activity AD were delayed by 2 weeks (takes 8 weeks versus 6). What is the new project completion time and critical path? A-D already has 2 hours of slack time‚ therefore if it becomes delayed by 2 hours it will have no impact on the finish time. 4. Suppose that you have extra resources
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European Journal of Operational Research 205 (2010) 237–246 Contents lists available at ScienceDirect European Journal of Operational Research journal homepage: www.elsevier.com/locate/ejor Invited Review Architecture of manufacturing scheduling systems: Literature review and an integrated proposal Jose M. Framinan a‚ Rubén Ruiz b‚* a b Industrial Management‚ School of Engineering‚ University of Seville‚ Ave. Descubrimientos s/n‚ E41092 Seville‚ Spain Grupo de Sistemas de Optimización
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