Introduction to Operating System
... • Time sharing or multitasking is a logical extension of multiprogramming. • A time-shared operating system allows several users to share the computer simultaneously. Each user has a separate program in memory. The operating system allocates the CPU to each user for a time interval of up to one time ...
... • Time sharing or multitasking is a logical extension of multiprogramming. • A time-shared operating system allows several users to share the computer simultaneously. Each user has a separate program in memory. The operating system allocates the CPU to each user for a time interval of up to one time ...
Operating Systems: Internals and Design Principles, 7th Edition
... 10) __________ was designed to keep the processor and I/O devices, including storage devices, simultaneously busy to achieve maximum efficiency. Answer: Multiprogramming 11) In a time-sharing, multiprogramming system, multiple users simultaneously access the system through __________ . Answer: termi ...
... 10) __________ was designed to keep the processor and I/O devices, including storage devices, simultaneously busy to achieve maximum efficiency. Answer: Multiprogramming 11) In a time-sharing, multiprogramming system, multiple users simultaneously access the system through __________ . Answer: termi ...
Slides for week 2
... transform the baking ingredients (input data), with the aid of cooking utensils and appliances (resources), into a cake (output). We recognize this entire activity as the process - an abstraction of an executing recipe. ...
... transform the baking ingredients (input data), with the aid of cooking utensils and appliances (resources), into a cake (output). We recognize this entire activity as the process - an abstraction of an executing recipe. ...
Module 4: Processes
... They provide interleaved execution of several processes to give an illusion of many simultaneously executing processes. Computers can be a single-processor or multi-processor machine. The OS must keep track of the state for each active process and make sure that the correct information is properly i ...
... They provide interleaved execution of several processes to give an illusion of many simultaneously executing processes. Computers can be a single-processor or multi-processor machine. The OS must keep track of the state for each active process and make sure that the correct information is properly i ...
Network Operating Systems - Partha Dasgupta`s Workstation!
... Network Operating Systems extend the facilities and services provided by computer operating systems to support a set of computers, connected by a network. The environment managed by a network operating system consists of an interconnected group of machines that are loosely connected. By loosely conn ...
... Network Operating Systems extend the facilities and services provided by computer operating systems to support a set of computers, connected by a network. The environment managed by a network operating system consists of an interconnected group of machines that are loosely connected. By loosely conn ...
2.01 - Computer Science Building, Colorado State University
... Important principle, performed at many levels in a computer (in ...
... Important principle, performed at many levels in a computer (in ...
Tips: To get information about installed OS quickly (for Windows)
... Topic 1: Computation of metrics of productivity of computer system: speed, efficiency, energy expenses, Amdal's law, CPU time. Basics: An operating system is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer. The other pr ...
... Topic 1: Computation of metrics of productivity of computer system: speed, efficiency, energy expenses, Amdal's law, CPU time. Basics: An operating system is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer. The other pr ...
PPT Slides - Iust personal webpages
... Approach MANNA Management application is divided into two phases: ...
... Approach MANNA Management application is divided into two phases: ...
ppt - Computer Science
... CS 416: Operating Systems Design, Spring 2001 Department of Computer Science ...
... CS 416: Operating Systems Design, Spring 2001 Department of Computer Science ...
Operating system
... 2. Operating system – controls and coordinates the use of the hardware among the various application programs for the various users. 3. Applications programs – define the ways in which the system resources are used to solve the computing problems of the users (compilers, database systems, video game ...
... 2. Operating system – controls and coordinates the use of the hardware among the various application programs for the various users. 3. Applications programs – define the ways in which the system resources are used to solve the computing problems of the users (compilers, database systems, video game ...
Peer-to-peer applications fostered explosive growth in recent years
... What is Peer-to-Peer? Every node is designed to(but may not by user choice) provide some service that helps other nodes in the network to get service Each node potentially has the same responsibility Sharing can be in different ways: ...
... What is Peer-to-Peer? Every node is designed to(but may not by user choice) provide some service that helps other nodes in the network to get service Each node potentially has the same responsibility Sharing can be in different ways: ...
1.01
... CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller. Device controller informs CPU that it has finished its operation by ...
... CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller. Device controller informs CPU that it has finished its operation by ...
ch01.pdf
... Mode bit provided by hardware Provides ability to distinguish when system is running user code or kernel code ...
... Mode bit provided by hardware Provides ability to distinguish when system is running user code or kernel code ...
LEDS:Providing Location –Aware End-to-End Data
... A report is always relayed between adjacent cells1 toward the sink The reportforward route of node u therefore consists of all the cells that are intersected by the line segment that connects the center of Iu and the sink Report-auth cell A cell is called a report-auth cell of node u if it belon ...
... A report is always relayed between adjacent cells1 toward the sink The reportforward route of node u therefore consists of all the cells that are intersected by the line segment that connects the center of Iu and the sink Report-auth cell A cell is called a report-auth cell of node u if it belon ...
Low Power Operating System for Heterogeneous Wireless
... To illustrate these concepts, we construct our argument in two steps. To demonstrate the benefit of a specialized OS that closely matches the application, we will first present a detailed comparison between two OS implementation of the same design -- a wireless protocol stack. The first is eCOS [2], ...
... To illustrate these concepts, we construct our argument in two steps. To demonstrate the benefit of a specialized OS that closely matches the application, we will first present a detailed comparison between two OS implementation of the same design -- a wireless protocol stack. The first is eCOS [2], ...
Abstract View of System Components
... The device driver is special operating system software that interacts with the device controller. Typically, the device controller informs CPU that it has finished its operation by causing an interrupt. The Device Controller has an equivalent device driver through which the device controller communi ...
... The device driver is special operating system software that interacts with the device controller. Typically, the device controller informs CPU that it has finished its operation by causing an interrupt. The Device Controller has an equivalent device driver through which the device controller communi ...
Operating System
... a program are continually being loaded into memory and then saved on the disk. In worse case conditions, the processor may be spending more time saving and loading blocks than actually performing any useful processing. This unfortunate state of affairs is known as thrashing. ...
... a program are continually being loaded into memory and then saved on the disk. In worse case conditions, the processor may be spending more time saving and loading blocks than actually performing any useful processing. This unfortunate state of affairs is known as thrashing. ...
PDF
... Bob, one of whom (e.g. Bob) would like to communicate a one-bit message to Charlie, but Alice and Bob want to hide the identity of the message originator. They first toss a coin in secret. Alice sends the truthful result of the coin flip to Charlie. Bob, on the other hand, reports the true result of ...
... Bob, one of whom (e.g. Bob) would like to communicate a one-bit message to Charlie, but Alice and Bob want to hide the identity of the message originator. They first toss a coin in secret. Alice sends the truthful result of the coin flip to Charlie. Bob, on the other hand, reports the true result of ...
QUESTION BANK AOS
... 6. Describe blocking and non blocking types of IPC. What is simpler to implement and Why ? Discuss their relative advantages and disadvantages. 7. What is datagram? Why are multidatagram messages used in IPC? What are the main Issues in IPC of multidatagram messages? Describe a mechanism for handlin ...
... 6. Describe blocking and non blocking types of IPC. What is simpler to implement and Why ? Discuss their relative advantages and disadvantages. 7. What is datagram? Why are multidatagram messages used in IPC? What are the main Issues in IPC of multidatagram messages? Describe a mechanism for handlin ...
Solution
... 10. What does it mean if a node has high betweenness centrality? Explain by an example. ANS: More pair of nodes to use this node to communicate as quickly as possible. 11. What does it mean if a node has high closeness centrality? Explain by an example. ...
... 10. What does it mean if a node has high betweenness centrality? Explain by an example. ANS: More pair of nodes to use this node to communicate as quickly as possible. 11. What does it mean if a node has high closeness centrality? Explain by an example. ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.