Operating Systems Lecture 8b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Memory management Virtual memory Addressing and address spaces Partitioning and segmentation Paging & Page replacement Recap: Questions 2 Recap questions 1. How can we avoid page faults when a process starts? 2. How can […]
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Operating Systems Lecture 4a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Scheduling Time scales: Long-, medium-, and short-term scheduling Scheduling criteria Scheduling algorithms: FCFS, SJF, SRT, RR Today 2 Scheduling Performance overview of last week’s scheduling policies: FCFS, SJF, SRT, RR Another look at
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Operating Systems Lecture 5a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Evaluation of scheduling algorithms Deterministic evaluation Probabilistic evaluation Queueing models Little’s Law Stochastic evaluation Simulation models Today 2 Process Synchronisation Inter-Process Communication Race conditions Communication models Critical section
Operating Systems Lecture 9b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 File systems File systems implementation Kernel data structures Block allocation Today 2 File System Management File systems Data consistency Performance Virtual file systems Recap: Questions 3 Recap questions 1. What does
Operating Systems Lecture 5b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Process Synchronisation Inter-Process Communication Race conditions Communication models Critical section Software vs. Hardware solutions Condition synchronisation Today 2 Process Synchronisation CriticalSections Commonapplicationproblems: Producer-Consumer Readers-Writers (Lab next week)
Operating Systems Lecture 9a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previously 1 Storage management Persistent storage Formats, access, operations File attributes & permissions Today 2 Storage management File systems implementation Implementation Layout Kernel data structures Block allocation Logical file system File
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Assignment 1 Reliable Data Transport Overview In this programming assignment, you will be writing the sending and receiving transport-level code for implementing a simple reliable data transfer protocol. You will implement two different versions: Stop-and-Wait Protocol. Go-Back-N protocol. Your implementation will differ very little from what would be required in a real-world situation. Since we
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Candidate Number THE UNIVERSITY OF SUSSEX BSc SECOND YEAR EXAMINATION May/June 2016 (A2) OPERATING SYSTEMS Assessment Period: May/June 2016 (A2) G6059 DO NOT TURN OVER UNTIL INSTRUCTED TO BY THE CHIEF INVIGILATOR Candidates should answer TWO questions out of THREE. If all three questions are attempted only the first two answers will be marked. The
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Operating Systems Lecture 2a Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previous Lecture 1 Operating system architectures Abstractions Processes Virtual memory Files System call interface User mode vs. Kernel mode Basic design principles Separation of interface and implementation Separation of policy and
Operating Systems Lecture 2b Dr Ronald Grau School of Engineering and Informatics Spring term 2018 Previous Lecture 1 Processes Bootstrapping Processes Creation Management Execution Termination Quick knowledge check 2 A process is a program in execution What does it mean when we say processes run concurrently? What
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