'Ready processes' diaporamas de présentation

Lecture 11: I/O Management and Disk Scheduling

Lecture 11: I/O Management and Disk Scheduling Categories of I/O Devices Human readable Used to communicate with the user Printers Video display terminals Display Keyboard Mouse Categories of I/O Devices Machine readable Used to communicate with electronic equipment Disk and tap drives

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CPU Scheduling & Deadlock

CPU Scheduling & Deadlock. Operating Systems Lecture 4. Process Management. Concept of a Process Context-Change Process Life Cycle Process Creation Process Spawning. Process State Diagrams. Three State Model Ready Running Blocked Five State Model Ready Running Blocked

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Memory Management

Memory Management. Memory Management Requirements Relocation A programmer does not know in advance which other programs will be resident in main memory at the time of execution of a program.

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CGS 3763 Operating Systems Concepts Spring 2013

CGS 3763 Operating Systems Concepts Spring 2013. Dan C. Marinescu Office: HEC 304 Office hours: M- Wd 11:30 - 12:30 A M. Last time: CPU Scheduling Today: CPU scheduling Process synchronization Next time Process synchronization Reading assignments

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CPU Scheduling

CPU Scheduling. To introduce CPU scheduling, which is the basis for multiprogrammed operating systems To describe various CPU-scheduling algorithms To discuss evaluation criteria for selecting a CPU-scheduling algorithm for a particular system. Objectives.

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Chapter 5: CPU Scheduling

Chapter 5: CPU Scheduling. Chapter 5: CPU Scheduling. Basic Concepts Scheduling Criteria Scheduling Algorithms Thread Scheduling Multiple-Processor Scheduling Operating Systems Examples Algorithm Evaluation. Objectives.

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Chapter 6: CPU Scheduling

Chapter 6: CPU Scheduling. Chapter 6: CPU Scheduling. Basic Concepts Scheduling Criteria Scheduling Algorithms Thread Scheduling Multiple-Processor Scheduling Real-Time CPU Scheduling Operating Systems Examples Algorithm Evaluation. Objectives.

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Operating Systems

Operating Systems. Process Scheduling and Switching. Processor Scheduling. Maximize CPU use, quickly switch processes onto CPU for time sharing. Process scheduler selects among available processes for next execution on CPU. Maintains scheduling queues of processes:

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CPU Scheduling

CPU Scheduling. Schedulers. Process migrates among several queues Device queue, job queue, ready queue Scheduler selects a process to run from these queues Long-term scheduler: load a job in memory Runs infrequently Short-term scheduler: Select ready process to run on CPU Should be fast

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Uniprocessor Process Management & Process Scheduling

CS 514 Operating Systems. Uniprocessor Process Management & Process Scheduling. Department of Computer Science Southern Illinois University Edwardsville Spring, 2009 Dr. Hiroshi Fujinoki E-mail: hfujino@siue.edu. Process_Management/000. Uniprocessor Process Management.

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CPU Scheduling

CPU Scheduling. Agenda. What is CPU scheduling? CPU burst distribution CPU scheduler and dispatcher CPU scheduling criteria CPU scheduling algorithms Other issues. 1. What is CPU scheduling (1): process and thread. Uniprogramming Multiprogramming Multitasking Multithreading

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