Lecture Notes || SNS Courseware

Subject Details

Dept : CSE

Sem : 4

Regul : 2019

Faculty : Mrs. Lavanya M

phone : NIL

E-mail : lavanya.m.cse@snsct.org

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Lecture Notes

UNIT 1:

Introduction: Computer System Organization, Architecture,

Operation ,Process Management

Memory Management – Storage Management

Operating System – Process concept

Process scheduling

Operations on processes Cooperating processes

Inter process communication

Threads: Multi-threading Models

Threading issues

UNIT 2:

CPU Scheduling: Scheduling criteria

Scheduling algorithms-FCFS,SJF

Scheduling algorithms-Priority, Round Robin

Multiple-processor scheduling – Real time scheduling , Algorithm Evaluation,

Process Synchronization, The critical-section problem, Synchronization hardware

Semaphores – Classical problems of synchronization.

Deadlock: System model – Deadlock characterization, Methods for handling deadlocks

Deadlock prevention, Deadlock avoidance

Deadlock detection – Recovery from deadlock

UNIT 3:

Memory Management: Background

Swapping – Contiguous memory allocation

Paging

Structure of the Page Table

Segmentation, Segmentation with paging

Virtual Memory: Background

Demand paging, Process creation

Page replacement

Allocation of frames, Thrashing

UNIT 4:

File concept: Access methods

Directory structure

Files System Mounting

File Sharing

Protection.

File System Implementation

Directory implementation

Free-space management.

UNIT 5:

I/O Systems: I/O Hardware

Application I/O interface, Kernel I/O subsystem

Streams – performance

Mass-Storage Structure: Disk scheduling

Disk management

Swap-space management

RAID – disk attachment

Stable storage – Teritiary storage

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