lecture01-chapter01 - Operating Systems Operating COP 4600...

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Operating Systems Operating Systems COP 4600 COP 4600 Lecture 1 Instructor: Anda Iamnitchi anda@cse.usf.edu 1
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2 What is an Operating System? What is an Operating System?
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The Role of an OS The Role of an OS Exploit the hardware resources of one or more processors Provides a set of services to system users Manages secondary memory and I/O devices 3
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4 This Course This Course Bus Processe s, threads, schedulin g Memory managemen t I/O Management File Systems Monitor
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5 Why care about OS? (1) Why care about OS? (1) You, the CS major You, the CS major Most critical software in a computer. OS performance influences the performance of all software on a computer How to extract the best performance out of an OS? How to work around design flaws? Write software that takes advantage of the design of the OS
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Why care about OS? (2) Why care about OS? (2) You, the informed computer user You, the informed computer user You need to understand enough to make informed decisions about things like buying and using a personal computer Why do different platforms with the same CPU perform differently? Should I get Windows XP? Windows Vista? Linux? Mac? What’s the difference? Should I upgrade my hardware? Should I upgrade my OS? What’s going on with my PC, especially when I have to install something?
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lecture01-chapter01 - Operating Systems Operating COP 4600...

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