Operating System Objectives and Functions
... Process isolation - prevent independent processes from interfering with each other Automatic allocation and management - transparent to the programmer Support of modular programming Protection and access control Long-Term Storage The above requirements are satisfied by means of virtual memory and fi ...
... Process isolation - prevent independent processes from interfering with each other Automatic allocation and management - transparent to the programmer Support of modular programming Protection and access control Long-Term Storage The above requirements are satisfied by means of virtual memory and fi ...
Chapter - 5th Semester Notes
... • Since main memory (primary storage) is volatile and too small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. • Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. • ...
... • Since main memory (primary storage) is volatile and too small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. • Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. • ...
Operating-System Structures - Stanford Computer Graphics
... memory and to run it. I/O operations – since user programs cannot execute I/O operations directly, the operating system must provide some means to perform I/O. File-system manipulation – program capability to read, write, create, and delete files. Communications – exchange of information between pro ...
... memory and to run it. I/O operations – since user programs cannot execute I/O operations directly, the operating system must provide some means to perform I/O. File-system manipulation – program capability to read, write, create, and delete files. Communications – exchange of information between pro ...
operating system
... Memory: Programs compete for access to memory. The currently running program must be in memory. Other programs may be swapped to disk to make room. I/O: Some devices can be shared by multi-tasking programs (e.g. hard disks). Others must be dedicated to a program until task completion. (e.g. printer) ...
... Memory: Programs compete for access to memory. The currently running program must be in memory. Other programs may be swapped to disk to make room. I/O: Some devices can be shared by multi-tasking programs (e.g. hard disks). Others must be dedicated to a program until task completion. (e.g. printer) ...
Course Syllabus
... memory management (virtual memory, segmentation, and paging) and auxiliary storage management (file systems, directory structuring, and protection mechanisms). Course Objectives Upon completion of this course the student will: ...
... memory management (virtual memory, segmentation, and paging) and auxiliary storage management (file systems, directory structuring, and protection mechanisms). Course Objectives Upon completion of this course the student will: ...
system call.
... Job scheduling: Choose jobs to bring into memory. Memory management – the system must allocate the memory to several jobs. CPU scheduling – the system must choose among several jobs ready to run. Allocation of devices. ...
... Job scheduling: Choose jobs to bring into memory. Memory management – the system must allocate the memory to several jobs. CPU scheduling – the system must choose among several jobs ready to run. Allocation of devices. ...
Lecture1
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such a ...
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such a ...
Batching processing
... Scheduler--According to some priorities or concerns, it determines which activities should be considered for execution. ...
... Scheduler--According to some priorities or concerns, it determines which activities should be considered for execution. ...
Module 3: Operating
... convenient to use, easy to learn, reliable, safe, and fast. System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and ...
... convenient to use, easy to learn, reliable, safe, and fast. System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and ...
Module 3: Operating-System Structures
... reliable, safe, and fast. System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient. ...
... reliable, safe, and fast. System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient. ...
Lecture 3 - The College of New Jersey
... protection of system resources since each virtual machine is isolated from all other virtual machines. This isolation, however, permits no direct sharing of resources. A virtual-machine system is a perfect vehicle for operating-systems research and development. System development is done on the vi ...
... protection of system resources since each virtual machine is isolated from all other virtual machines. This isolation, however, permits no direct sharing of resources. A virtual-machine system is a perfect vehicle for operating-systems research and development. System development is done on the vi ...
OS Components and Structure
... Problems with monolithic kernels: – hard to understand – hard to modify – unreliable: a bug anywhere causes a system ...
... Problems with monolithic kernels: – hard to understand – hard to modify – unreliable: a bug anywhere causes a system ...
08 Operating System Support
... • Can’t expect that process will load into the same place in memory • Instructions contain addresses —Locations of data —Addresses for instructions (branching) ...
... • Can’t expect that process will load into the same place in memory • Instructions contain addresses —Locations of data —Addresses for instructions (branching) ...
CH 4 – Review - WordPress.com
... Silverman believes that we will see operating systems in the future that – are more touch oriented, are simpler and easier to learn, will run faster and start up almost instantly The operating system and utilities are known as – system software This operating system is an open source program – Linux ...
... Silverman believes that we will see operating systems in the future that – are more touch oriented, are simpler and easier to learn, will run faster and start up almost instantly The operating system and utilities are known as – system software This operating system is an open source program – Linux ...
OS support
... —Operating System must swap in required page —May need to swap out a page to make space —Perhaps select page to throw out based on recent ...
... —Operating System must swap in required page —May need to swap out a page to make space —Perhaps select page to throw out based on recent ...
This course is an introduction to computer operating systems
... MAC230 Comparative Operating Systems 3 Credits; 4 Hours (3 lecture, 1 lab) ...
... MAC230 Comparative Operating Systems 3 Credits; 4 Hours (3 lecture, 1 lab) ...
Chapter 4
... sub-tasks (threads) - the OS manages process memory (memory management) and other resources and would switch between tasks as needed - for example, listening to music while writing a paper while having a chat window open while having a browser window open ...
... sub-tasks (threads) - the OS manages process memory (memory management) and other resources and would switch between tasks as needed - for example, listening to music while writing a paper while having a chat window open while having a browser window open ...
Chapter 4
... sub-tasks (threads) - the OS manages process memory (memory management) and other resources and would switch between tasks as needed - for example, listening to music while writing a paper while having a chat window open while having a browser window open ...
... sub-tasks (threads) - the OS manages process memory (memory management) and other resources and would switch between tasks as needed - for example, listening to music while writing a paper while having a chat window open while having a browser window open ...
Operating System Overview
... • The entity that can be assigned to and executed on a processor • A unit of activity characterized by a single sequential thread of execution, a current state, and an associated set of ...
... • The entity that can be assigned to and executed on a processor • A unit of activity characterized by a single sequential thread of execution, a current state, and an associated set of ...
XOberon Operating System
... physical memory into pages and mapping it page by page into the virtual address space of 232 bytes. ...
... physical memory into pages and mapping it page by page into the virtual address space of 232 bytes. ...
Module 3: Operating
... – Drivers for specific hardware devices File Management • A file is a collection of related information defined by its creator. Commonly, files represent programs (both source and object forms) and data. • The operating system is responsible for the following activities in connections with file mana ...
... – Drivers for specific hardware devices File Management • A file is a collection of related information defined by its creator. Commonly, files represent programs (both source and object forms) and data. • The operating system is responsible for the following activities in connections with file mana ...