Operating Systems Assignment #5 Of Chapter 4 Eighth Edition of Operating System Concepts by Avi Silberschatz Peter Baer Galvin & Greg Gagne 2009 4.1 Provide two programming examples in which multithreading does not provide better performance than a single-threaded solution Answer: (1) Any kind of sequential program is not a good candidate to be threaded. An example of this is a program that calculates an individual tax return. (2) Another example is a "shell" program such as
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Chapter 2 – Operating System Overview TRUE/FALSE QUESTIONS: 1) An OS should be constructed in such a way as to permit the effective development‚ testing‚ and introduction of new system functions without interfering with service. (True) 2) The OS masks the details of the hardware from the programmer and provides the programmer with a convenient interface for using the system. (True) 3) The ABI gives a program access to the hardware resources and services available in a system through the user
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1. Briefly‚ what is an operating system? An operating system serves as a hardware/software interface‚ acts as a repository for common‚ shared routines and defines a platform for constructing and executing application software. 2. An operating system presents an application programmer with a relatively "friendly" hardware/software interface. What does this mean? Why is it important? The user interface‚ sometimes called the shell‚ provides a mechanism for the user and application programs to communicate
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Chapter no | Topic | 1 | Introduction‚ Types ‚ Computer System Overview | 2 | Operating System Structure‚ Components and Functions‚ Virtual Machine | 3 | Process Concept‚ Operation‚ Process scheduling‚ symmetric multi -processing‚ Cooperating Processes | 4 | Thread Concept‚ Thread Vs Process‚ IPC ‚kernel ‚microkernel | 5 | Scheduling‚ Types‚ Scheduling in batch‚ interactive and real-time systems (SJN‚ SJF‚ FIFO‚ LJN‚ round-robin‚ priority scheduling‚ and hybrid schemes). | 6 | Deadlock:
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3) Which of the following components of the program state are shared across threads in a multithreaded process? a. Register value b. Heap memory c. Global variable d. Stack memory Answer: The threads of a multithreaded process share heap memory and global variables. Each thread has its separate set of register values and a separate stack. 4.4) Output at LINE C is 5. Output at LINE P is 0. 4.6) What are the two differences between user-level and kernel-level threads? Under what circumstances
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INTRODUCTION Operating system (OS) is a set of programs that acts as an interface between user and computer hardware. It also manages the internal resources of a computer like control Unit‚ arithmetic logic unit‚ memory unit‚ I/O unit etc. simply we can say that operating system (OS) is a communication channel between the user and the computer machine. It is must for any computer system because the OS is only: The one program that runs at all the times on the computer. The program that
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sedang dialihkan. 4.3 Under what circumstances does a multithreaded solution using multiple kernel threads provide better performance than a single-threaded solution on a single-processor system? * Umumnya‚ setiap situasi di mana pemungutan dihindari menggunakan multithreading‚ yang memungkinkan thread untuk memblokir daripada berkutat di beberapa kondisi. 4.4 Which of the following components of program state are shared across threads in a multithreaded process? * Heap memory dan
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CS 3530 Operating Systems L02 OS Intro Part 1 Dr. Ken Hoganson Chapter 1 Basic Concepts of Operating Systems Computer Systems A computer system consists of two basic types of components: • Hardware components‚ which are the electronic devices and electromechanical devices‚ such as the processors‚ memory modules‚ disk units‚ keyboard‚ screen‚ and other devices. • Software components‚ such as the application programs‚ operating system‚ utilities‚ and other programs. 3 Computer Architecture
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error or by a specific request from a user program that an OS service be performed .Dual-mode Operation allows OS to protect itself and other system components whereas Multimode Operation increasingly CPUs support multi-mode operations. System call provides the means for a user program to ask OS to perform OS tasks on the user program’s behalf. When a system callis executed‚ it is treated by H/W as a S/W interrupt. Timer protects CPU resource from getting stuck by a user program. To ensure OS maintains
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Operating system ABCs An operating system‚ or OS‚ is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system‚ a computer would be useless. Operating system types As computers have progressed and developed so have the operating systems. Below is a basic list of the different operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will
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