OPERATING SYSTEMS-18CS003

Unit-1 --> OPERATING SYSTEMS CONCEPTS

• Introduction to Operating Systems
• Computer System Architecture: Single Processor Systems
• Multiprocessor Systems
• Clustered Systems
• Operating System Structure
• Operating System Services
• System Calls: Types of System Calls
• System Programs
• Process: Process Concept
• Process Scheduling
• Operation on Processes
• Cooperating Process
• Inter Process Communication.

Unit-2 --> THREADS AND CPU SCHEDULING

• Threads: Overview
• Multithreading Models
• Thread Issues
• CPU Scheduling: Basic Concepts
• Scheduling Criteria
• Scheduling Algorithms:FCFS
• SJF
• Priority
• Round Robin
• Process Synchronization: Critical Section Problem
• Peterson’s Solution
• Synchronization Hardware
• Semaphores
• Classic Problems of Synchronization.

Unit-3 --> DEADLOCK AND MEMORY MANAGEMENT

• Deadlock : System Model
• Deadlock Characterization
• Methods for Handling Deadlocks
• Deadlock Prevention
• Deadlock Avoidance
• Deadlock Detection
• Recovery from Deadlock
• Memory Management: Background
• Swapping
• Contiguous memory Allocation
• Segmentation
• Paging
• Structure of the Page Table.

Unit-4 --> VIRTUAL MEMORY AND FILE SHARING INTERFACE

• Virtual Memory: Demand Paging
• Copy-on-Write
• Page Replacement
• Allocation of Frames
• Thrashing
• File Concepts: Access Methods
• Directory Structure
• File System Mounting
• File Sharing
• Protection.

Unit-5 --> FILE SYSTEM STRUCTURE AND STORAGE STRUCTURE

• File System Structure
• File System Implementation: Directory Implementation
• Allocation Methods
• Free space Management
• Mass Storage Structure: Disk Structure
• Disk Scheduling
• Disk Management
• Swap-Space Management
• RAID structure
• I/O Systems: I/O Hardware
• Kernel I/O Subsystem.

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