TAILIEUCHUNG - Lecture Operating system concepts - Lecture 25

This chapter examines two problems that plague all efforts to support concurrent processing: deadlock and starvation. We begin with a discussion of the underlying principles of deadlock and the related problem of starvation. Then we examine the three common approaches to dealing with deadlock: prevention, detection, and avoidance. | CSC 322 Operating Systems Concepts Lecture - 27: by Ahmed Mumtaz Mustehsan Special Thanks To: Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. (Chapter-5) Silberschatz, Galvin and Gagne 2002, Operating System Concepts, Ahmed Mumtaz Mustehsan, GM-IT, CIIT, Islamabad 1 Chapter 5 Input/ Output Hardware Magnetic Disk CD/ CD-ROM /DVD Lecture-27 2 Ahmed Mumtaz Mustehsan, GM-IT, CIIT, Islamabad Stable Storage RAIDS can protect against sectors going bad Can’t protect against write operations spitting out garbage or crashes during writes Stable storage: either correct data is laid down or old data remains in place Necessary for some apps-data can’t be lost or go bad Ahmed Mumtaz Mustehsan, GM-IT, CIIT, Islamabad Assumptions Can detect a bad write on subsequent reads via ECC (Error Correction Code) Probability of having bad data in sector on two different disks is negligible If CPU fails, it stops along with any write in progress at the time. Bad data can be detected .

• Hệ điều hành
• Operating system
• Operating system concept
• Memory management
• File systems
• Operating systems design
• Operating system structure
• Operating system concepts
• Lecture Operating system concepts
• Operating system services
• Operating system structures
• Operating system design
• Hệ điều hành
• Computer system organization
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Lecture Operating system principles
• Computer system
• Modern operating systems
• Evolution of operating systems
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system