Operating Systems Lecture 3b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 The elephant on campus 1 What is going to happen with operating systems during the strike? Lectures and Labs will keep running as usual Lectures will be recorded as usual, too – those who want to support their […]
Assignment 2 The Trivial File Transfer Protocol (TFTP) is an Internet software utility for transferring files that is simpler to use than the File Transfer Protocol (FTP) but less capable. It is used where user authentication and directo ry visibility are not required. For example, it is used by Cisco routers and switches to transfer
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Operating Systems Lecture 3a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Processes Threads Distinction to processes (lightweight sub-processes) Single- and multi-threaded processes Implementation User-level threads Kernel-level threads Hybrid threads Today 2 Programming with Threads The relationship between processes and threads
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Evaluation of CPU Scheduling Algorithms Operating Systems Coursework 1 The aim of this assignment is to investigate the performance of different CPU scheduling algo- rithms. You will use a discrete event simulator to conduct experiments on different processor loads and schedulers, and analyse the results to determine in what situations each scheduling algorithm works most
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Operating Systems Lecture 1b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previous Lecture 1 A brief introduction to operating systems A bit of history: How operating systems came about and developed over time A few basics about operating systems They offer a virtual machine abstraction to work
Operating Systems Lecture 1a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Operating System – What’s that again? 1 A piece of software (virtual machine) Provides abstractions from the hardware Provides the basic services for running other programs Gives us a user interface (the shell or GUI)
Operating Systems Lecture 6b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Deadlocks Deadlock conditions Methods of handling deadlocks Today 2 More about deadlocks More deadlock avoidance Resource Allocation Graphs Deadlock detection and recovery Recap: Prevention of deadlocks 3 Prevention by design Make sure
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Operating Systems Lecture 10b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 The I/O System Interaction protocols Blocking vs. non-blocking I/O Recap questions 2 1. Which general factors make the I/O system of an operating system complex? 2. How do OS designers cope with this complexity? 3. What can we
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Operating Systems Lecture 6a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Process Synchronisation Critical Section problem Synchronisation primitives: Mutex, Semaphore, Monitor, Condition Variable, . . . Transactional Memory Message Passing Recap: Synchronisation primitives 2 Which synchronisation primitive would you use? 1. Public transport rules
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Candidate Number THE UNIVERSITY OF SUSSEX BSc and MComp SECOND YEAR EXAMINATION May/June 2017 (A2) Operating Systems Assessment Period: May/June 2017 (A2) DO NOT TURN OVER UNTIL INSTRUCTED TO BY THE LEAD INVIGILATOR Candidates should answer TWO questions out of THREE. If all three questions are attempted only the first two answers will be marked.
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