Introduction and Overview - Pages
... • Virtualize resources so multiple users or applications can share • Protect applications from one another • Provide efficient and fair access to resources ...
... • Virtualize resources so multiple users or applications can share • Protect applications from one another • Provide efficient and fair access to resources ...
The Evolution of Operating Systems
... Coordinating the Machine’s Activities • “One of the most fundamental concepts of modern operating systems is the distinction between a program and the activity of executing a program.” – A program -- a static set of directions – A process -- the dynamic activity of the machine whose properties chan ...
... Coordinating the Machine’s Activities • “One of the most fundamental concepts of modern operating systems is the distinction between a program and the activity of executing a program.” – A program -- a static set of directions – A process -- the dynamic activity of the machine whose properties chan ...
09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To
... 09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
... 09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
System Structures
... Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one level ...
... Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one level ...
Operating System
... • Hardware is surrounded by the operating system software • Operating system is called the system kernel • Comes with a number of user services and ...
... • Hardware is surrounded by the operating system software • Operating system is called the system kernel • Comes with a number of user services and ...
System
... Dennis Ritchie: They're not all that different when you actually use them. "Micro" kernels tend to be pretty large these days, and "monolithic" kernels with loadable device drivers are taking up more of the advantages claimed for microkernels. ...
... Dennis Ritchie: They're not all that different when you actually use them. "Micro" kernels tend to be pretty large these days, and "monolithic" kernels with loadable device drivers are taking up more of the advantages claimed for microkernels. ...
Lecture 1: Operating System Services What is an Operating System?
... Scheduling: The system has to decide when to introduce new processes into the system and the order in which processes should run. Resource Allocation: When there are multiple process running concurrently, resources must be allocated to each one of them. Example: A compiler. A tape unit. Memory. ...
... Scheduling: The system has to decide when to introduce new processes into the system and the order in which processes should run. Resource Allocation: When there are multiple process running concurrently, resources must be allocated to each one of them. Example: A compiler. A tape unit. Memory. ...
Chapter 2 Operating System Overview
... – Was a hot topic in the 1990s – Working examples Mach, QNX – Current operating systems: Windows, Linux, Mac OS are not microkernel based ...
... – Was a hot topic in the 1990s – Working examples Mach, QNX – Current operating systems: Windows, Linux, Mac OS are not microkernel based ...
CMSC 312 Introduction to Operating System Syllabus
... Computer systems structure, process management (threads / scheduling / synchronization / deadlocks), memory management, storage management (filesystem interface, I/O systems), distributed systems. Students will work in teams to design and implement an operating system simulation. 2.0 – Course Struct ...
... Computer systems structure, process management (threads / scheduling / synchronization / deadlocks), memory management, storage management (filesystem interface, I/O systems), distributed systems. Students will work in teams to design and implement an operating system simulation. 2.0 – Course Struct ...
1.2 Operating System Structure
... layer using interfaces that hide their implementation • Layer OS are more modular than monolithic OS because the implementation of each layer can be modified without requiring any modification to other layers ...
... layer using interfaces that hide their implementation • Layer OS are more modular than monolithic OS because the implementation of each layer can be modified without requiring any modification to other layers ...
virtual machine
... want to control use of that information, concurrent processes should not interfere with each other ...
... want to control use of that information, concurrent processes should not interfere with each other ...
Chapter 1 Basic Concepts of Operating Systems
... • Application program Interface (API): libraries, system calls • OS kernel ...
... • Application program Interface (API): libraries, system calls • OS kernel ...
NETWORK OPERATING SYSTEMS
... The physical part of the computer. We can touch it. Software: Logical part of the computer which Is a collection of code and instructions. We cannot touch it. ...
... The physical part of the computer. We can touch it. Software: Logical part of the computer which Is a collection of code and instructions. We cannot touch it. ...
Operating Systems - arabunityschool.com
... There are a number of operating systems that you could use on your computer. The one that you are most likely to be familiar with is one of the Microsoft Windows operating systems. Almost all personal computers are loaded with Windows before you purchase them and most schools use a network version. ...
... There are a number of operating systems that you could use on your computer. The one that you are most likely to be familiar with is one of the Microsoft Windows operating systems. Almost all personal computers are loaded with Windows before you purchase them and most schools use a network version. ...
Operating Systems: Principles and Practice, Introduction
... pass. The right approach is to [read each chapter before class and] re-read each chapter once we've covered the corresponding material… more of it will make sense then. Don't save this re-reading until right before the mid-term or final – keep up.” ...
... pass. The right approach is to [read each chapter before class and] re-read each chapter once we've covered the corresponding material… more of it will make sense then. Don't save this re-reading until right before the mid-term or final – keep up.” ...
Lecture 2
... system calls OS provides. • System call causes a TRAP to switch from user to kernel mode and starts execution at interrupt vector location for TRAP instruction. • Operating system looks at requested operation and any parameters passed by the application. • Dispatches the correct system call handler ...
... system calls OS provides. • System call causes a TRAP to switch from user to kernel mode and starts execution at interrupt vector location for TRAP instruction. • Operating system looks at requested operation and any parameters passed by the application. • Dispatches the correct system call handler ...
os_ch1-2008
... which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing – Response time should be < 1 second – Each user has at least one program executing in memory process – If several jobs ready to run at the same time CPU scheduling – If ...
... which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing – Response time should be < 1 second – Each user has at least one program executing in memory process – If several jobs ready to run at the same time CPU scheduling – If ...
Introduction To Operating Systems
... A user program can’t use arbitrary amount of memory. A user program can’t access data belonging to the operating system or other user programs. • How to achieve memory protection? Indirect memory access: memory access with a virtual address which needs to be translated into physical address. ...
... A user program can’t use arbitrary amount of memory. A user program can’t access data belonging to the operating system or other user programs. • How to achieve memory protection? Indirect memory access: memory access with a virtual address which needs to be translated into physical address. ...
Operating Systems - inst.eecs.berkeley.edu
... application development: “all the code you didn’t write” in order to implement your application • Because hardware changes faster than applications! • Because some concepts are useful across applications ...
... application development: “all the code you didn’t write” in order to implement your application • Because hardware changes faster than applications! • Because some concepts are useful across applications ...
OPERATING SYSTEMS
... OS coordinates system resources to maximize the amount of processing per unit time 4. To minimize the time needed to execute a user command. 5. To optimize the use of computer system resources. OS constantly keeps track of what tasks need to be done and what resources (processor, RAM, peripheral dev ...
... OS coordinates system resources to maximize the amount of processing per unit time 4. To minimize the time needed to execute a user command. 5. To optimize the use of computer system resources. OS constantly keeps track of what tasks need to be done and what resources (processor, RAM, peripheral dev ...
PDF
... (a) What, if anything, should be recorded in each process’s PCB? (b) Under what conditions, if any, would there be a context switch? (c) What would the state-transition diagram for a process look like? (d) How do your answers to (a)-(c) change if the system uses n processors to run n processes? (e) ...
... (a) What, if anything, should be recorded in each process’s PCB? (b) Under what conditions, if any, would there be a context switch? (c) What would the state-transition diagram for a process look like? (d) How do your answers to (a)-(c) change if the system uses n processors to run n processes? (e) ...