Ch13_IO Systems.pdf - Chapter 13 I/O Systems Operating...

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Silberschatz, Galvin and Gagne © 2013 Operating System Concepts 9 th Edition Chapter 13: I/O Systems
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13.2 Silberschatz, Galvin and Gagne © 2013 Operating System Concepts 9 th Edition Chapter 13: I/O Systems I/O Hardware Application I/O Interface Kernel I/O Subsystem Transforming I/O Requests to Hardware Operations STREAMS Performance
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13.3 Silberschatz, Galvin and Gagne © 2013 Operating System Concepts 9 th Edition Objectives Explore the structure of an operating system’s I/O subsystem Discuss the principles of I/O hardware and its complexity Provide details of the performance aspects of I/O hardware and software
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13.4 Silberschatz, Galvin and Gagne © 2013 Operating System Concepts 9 th Edition Overview I/O management is a major component of operating system design and operation Important aspect of computer operation I/O devices vary greatly Various methods to control them Performance management New types of devices frequent Ports, busses, device controllers connect to various devices Device drivers encapsulate device details Present uniform device-access interface to I/O subsystem
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