CSE 8343 – Adv. OSCSE 8343 – Adv. OSGroup A5Group A5

Proposal for Paper Presentation I & IIProposal for Paper Presentation I & II

andand

Survey paper ISurvey paper I

Group membersGroup members

Amit SharmaAmit Sharma Dhaval SanghviDhaval Sanghvi Ali Abbas (videotape student)Ali Abbas (videotape student)

Paper Presentation IPaper Presentation I

Area: Distributed File Systems (DFS)Area: Distributed File Systems (DFS)

Topic: Sun’s NFSTopic: Sun’s NFS

Distributed File Systems (DFS)Distributed File Systems (DFS)

What is a DFS and why we need oneWhat is a DFS and why we need one Requirements of a DFSRequirements of a DFS Some FeaturesSome Features

– MountingMounting

– CachingCaching

– Write policyWrite policy

– ScalabilityScalability

Sun’s Network File SystemSun’s Network File System

History of NFSHistory of NFS Alternatives to NFSAlternatives to NFS Architecture of NFSArchitecture of NFS ImplementationImplementation

Paper Presentation IIPaper Presentation II

Distributed Architecture (DA)Distributed Architecture (DA)

Windows NTWindows NT

DA - Windows NTDA - Windows NT Why Windows NT - Limitations of MS-DOSWhy Windows NT - Limitations of MS-DOS Design Goals of Windows NTDesign Goals of Windows NT Windows NT ArchitectureWindows NT Architecture

Main FeaturesMain Features Three LayersThree Layers

Upper – ExecutiveUpper – Executive

A) Object Manager (OM)A) Object Manager (OM)

B) Process Manager (PM)B) Process Manager (PM)

C) Local Procedure Call Facilities (LPC)C) Local Procedure Call Facilities (LPC)

D) Virtual Memory Manager (VM)D) Virtual Memory Manager (VM)

DFS – Windows NTDFS – Windows NTE) Security Reference Monitor ( SRM)E) Security Reference Monitor ( SRM)F) I/O ManagerF) I/O Manager

Middle – KernelMiddle – Kernel Lower – HardLower – Hard88ware Abstraction Layerware Abstraction Layer

Environment SubsystemsEnvironment Subsystems» Win 32 subsystemWin 32 subsystem» OS/2 SubsystemOS/2 Subsystem» MS-DOS EnvironmentMS-DOS Environment» 16 Bit Windows Environment16 Bit Windows Environment» POSIX ClientPOSIX Client

BibliographyBibliography

Survey Paper ISurvey Paper I

Real Time Operating SystemsReal Time Operating Systems

VxWorksVxWorks

Real time operating systems Real time operating systems (RTOS)(RTOS)

What is a RTOSWhat is a RTOS How is it different from non RTOSHow is it different from non RTOS Misconceptions about RTOSMisconceptions about RTOS

RTOS - VxWorksRTOS - VxWorks

Key componentsKey components»Interrupt service routines (ISR’s)Interrupt service routines (ISR’s)

»TasksTasks

»Task schedulerTask scheduler

»The watchdogThe watchdog

»SemaphoresSemaphores

Any QuestionsAny Questions

??