In this post we have posted some notes on CS8493 OPERATING SYSTEMS for ANNA UNIVERSITY AFFILIATED COLLEGES STUDENTS. 

Here We have listed the the notes whichever we could collect for CS8493 OPERATING SYSTEMS subject, We think that it will be helpful for your exam preparation.

• To understand the basic concepts and functions of operating systems.
• To understand Processes and Threads
• To analyze Scheduling algorithms.
• To understand the concept of Deadlocks.
• To analyze various memory management schemes.
• To understand I/O management and File systems.
• To be familiar with the basics of Linux system and Mobile OS like iOS and Android.

Computer System Overview-Basic Elements, Instruction Execution, Interrupts, Memory Hierarchy, Cache Memory, Direct Memory Access, Multiprocessor and Multicore Organization. Operating system overview-objectives and functions, Evolution of Operating System.- Computer System Organization Operating System Structure and Operations- System Calls, System Programs, OS Generation and System Boot.

Processes – Process Concept, Process Scheduling, Operations on Processes, Inter-process Communication; CPU Scheduling – Scheduling criteria, Scheduling algorithms, Multiple-processor scheduling, Real time scheduling; Threads- Overview, Multithreading models, Threading issues; Process Synchronization – The critical-section problem, Synchronization hardware, Mutex locks, Semaphores, Classic problems of synchronization, Critical regions, Monitors; Deadlock – System model, Deadlock characterization, Methods for handling deadlocks, Deadlock prevention, Deadlock avoidance, Deadlock detection, Recovery from deadlock.

Main Memory – Background, Swapping, Contiguous Memory Allocation, Paging, Segmentation, Segmentation with paging, 32 and 64 bit architecture Examples; Virtual Memory – Background, Demand Paging, Page Replacement, Allocation, Thrashing; Allocating Kernel Memory, OS Examples.

Mass Storage system – Overview of Mass Storage Structure, Disk Structure, Disk Scheduling and Management, swap space management; File-System Interface – File concept, Access methods, Directory Structure, Directory organization, File system mounting, File Sharing and Protection; File System Implementation- File System Structure, Directory implementation, Allocation Methods, Free Space Management, Efficiency and Performance, Recovery; I/O Systems – I/O Hardware, Application I/O interface, Kernel I/O subsystem, Streams, Performance.

Linux System – Design Principles, Kernel Modules, Process Management, Scheduling, Memory Management, Input-Output Management, File System, Inter-process Communication; Mobile OS – iOS and Android – Architecture and SDK Framework, Media Layer, Services Layer, Core OS Layer, File System.

At the end of the course, the students should be able to:

1. Analyze various scheduling algorithms.
2. Understand deadlock, prevention and avoidance algorithms.
3. Compare and contrast various memory management schemes.
4. Understand the functionality of file systems.
5. Perform administrative tasks on Linux Servers.
6. Compare iOS and Android Operating Systems.

1. Abraham Silberschatz, Peter Baer Galvin and Greg Gagne, ―Operating System Concepts‖,

 9 th Edition, John Wiley and Sons Inc., 2012.

1. Ramaz Elmasri, A. Gil Carrick, David Levine, ―Operating Systems – A Spiral Approach‖, Tata McGraw Hill Edition, 2010.

2. Achyut S.Godbole, Atul Kahate, ―Operating Systems‖, McGraw Hill Education, 2016.

3. Andrew S. Tanenbaum, ―Modern Operating Systems‖, Second Edition, Pearson Education, 2004.

4. Gary Nutt, ―Operating Systems‖, Third Edition, Pearson Education, 2004.

5. Harvey M. Deitel, ―Operating Systems‖, Third Edition, Pearson Education, 2004.

6. Daniel P Bovet and Marco Cesati, ―Understanding the Linux kernel‖, 3rd edition, O‘Reilly, 2005.

7. Neil Smyth, ―iPhone iOS 4 Development Essentials – Xcode‖, Fourth Edition, Payload media,

 2011.

CS8493 OPERATING SYSTEMS NOTES