Microsoft`s Disk Operating System CS-550
... standard command processor is not required. Any user or vendor can implement DOS with their own command processor. A unique feature of the default command processor is that it is split into two pieces known as transient and resident. While OEM MS-DOS’s command processor behaves this way, this is not ...
... standard command processor is not required. Any user or vendor can implement DOS with their own command processor. A unique feature of the default command processor is that it is split into two pieces known as transient and resident. While OEM MS-DOS’s command processor behaves this way, this is not ...
Experience Distributing Objects in an SMMP OS
... other transaction-driven software, such as databases and Web servers, where parallelism results from parallel requests by the workload. Techniques for improving scalability of SMMP operating systems are relevant, as demonstrated by the efforts that have gone into parallelizing Linux and commercial o ...
... other transaction-driven software, such as databases and Web servers, where parallelism results from parallel requests by the workload. Techniques for improving scalability of SMMP operating systems are relevant, as demonstrated by the efforts that have gone into parallelizing Linux and commercial o ...
LINUX Virtualization
... AMD is producing hardware-assisted virtualization technology, under the name Pacifica which Pacifica maintains a control block for guest operating systems that are saved on execution of special instructions. This allows a virtual machine (and its associated guest operating system) to run until the V ...
... AMD is producing hardware-assisted virtualization technology, under the name Pacifica which Pacifica maintains a control block for guest operating systems that are saved on execution of special instructions. This allows a virtual machine (and its associated guest operating system) to run until the V ...
ppt
... • Device drivers are the routines that interact with specific device types – encapsulates device-specific knowledge • e.g., how to initialize a device, how to request I/O, how to handle interrupts or errors • examples: SCSI device drivers, Ethernet card drivers, video card drivers, sound card driver ...
... • Device drivers are the routines that interact with specific device types – encapsulates device-specific knowledge • e.g., how to initialize a device, how to request I/O, how to handle interrupts or errors • examples: SCSI device drivers, Ethernet card drivers, video card drivers, sound card driver ...
ppt
... portion of the address space than the kernel • There is a context switch that occurs every time we enter the kernel • Inside the kernel we have expanded privileges • A combination of hardware and software is responsible for this behavior CSE-451 Processes ...
... portion of the address space than the kernel • There is a context switch that occurs every time we enter the kernel • Inside the kernel we have expanded privileges • A combination of hardware and software is responsible for this behavior CSE-451 Processes ...
1.1 What is an Operating System?
... transfer of data from the device to its local buffer. Once the transfer of data is complete, the device controller informs the CPU that it has finished its operation. It accomplishes this communication by causing an interrupt. When the CPU is interrupted, it stops what it is doing and transfers exec ...
... transfer of data from the device to its local buffer. Once the transfer of data is complete, the device controller informs the CPU that it has finished its operation. It accomplishes this communication by causing an interrupt. When the CPU is interrupted, it stops what it is doing and transfers exec ...
CS533 Concepts of Operating Systems
... Linux implemented as a single Linux server in a μ-kernel task μ-kernel tasks used for Linux user processes A single L4 thread in the Linux server handles system calls and page faults. This thread is multiplexed (treated as a virtual CPU) On booting, the Linux server requests memory from its pager, w ...
... Linux implemented as a single Linux server in a μ-kernel task μ-kernel tasks used for Linux user processes A single L4 thread in the Linux server handles system calls and page faults. This thread is multiplexed (treated as a virtual CPU) On booting, the Linux server requests memory from its pager, w ...
Operating Systems Lab.
... Starts number of minimum consoles (mingetty) that all display login screen and sets their default font Shows the message “Welcome to RedHat Linux … Press I to Interactive Mode” Mounts /proc file system, configures kernel parameters, sets up system clock, keyboard, keymap Operating Systems Lab - UT E ...
... Starts number of minimum consoles (mingetty) that all display login screen and sets their default font Shows the message “Welcome to RedHat Linux … Press I to Interactive Mode” Mounts /proc file system, configures kernel parameters, sets up system clock, keyboard, keymap Operating Systems Lab - UT E ...
Mesh Networks - Gordon College
... communication infrastructure between multiple individual wireless tranceivers that have Ethernet capabilities Can either be centralized for highly scalable applications, or can be decentralized ...
... communication infrastructure between multiple individual wireless tranceivers that have Ethernet capabilities Can either be centralized for highly scalable applications, or can be decentralized ...
Chapter 1 - Introduction
... Performance of Various Levels of Storage Movement between levels of storage hierarchy can be explicit or ...
... Performance of Various Levels of Storage Movement between levels of storage hierarchy can be explicit or ...
PPT
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
DOC Security Model for the Next-Generation Secure Computing Base
... part of curtained memory and therefore cannot accept the transfer of DMA information. A hardware memory map of 1-bit per page marks the curtained pages to which a DMA device cannot read or write. Consequently, information from the computer's hard disk must be read into operating system or user space ...
... part of curtained memory and therefore cannot accept the transfer of DMA information. A hardware memory map of 1-bit per page marks the curtained pages to which a DMA device cannot read or write. Consequently, information from the computer's hard disk must be read into operating system or user space ...
Multiprocessor Memory Allocation
... Support buffering & spooling of I/O Provide general device driver interface ...
... Support buffering & spooling of I/O Provide general device driver interface ...
Document
... relatively easy to support file system but has many limitations – mostly with security features and the inability to support long names. Indexing: Marking for faster reading by appending an index to the location of a file on the hard disk as it is read. This provides for faster retrieval at a later ...
... relatively easy to support file system but has many limitations – mostly with security features and the inability to support long names. Indexing: Marking for faster reading by appending an index to the location of a file on the hard disk as it is read. This provides for faster retrieval at a later ...
Cont.
... • In multiprogramming the CPU is successively assigned to execute different programs • hence the programs share the CPU • but, this is a different kind of sharing than before... • Time-multiplexed sharing • “a resource is not divided into units, but instead, one program is assigned the entire resour ...
... • In multiprogramming the CPU is successively assigned to execute different programs • hence the programs share the CPU • but, this is a different kind of sharing than before... • Time-multiplexed sharing • “a resource is not divided into units, but instead, one program is assigned the entire resour ...
Multicast for Video Streaming
... Uses RSVP tunneling. Original messages pass through, but then additional state set up as needed. GGSN coordinates all reservations since it sees non-encapsulated packets. Use either UpdatePDPContextRequest & ChangePDPContextRequest messages, as well as ModifyPDPContextRequest messages. ...
... Uses RSVP tunneling. Original messages pass through, but then additional state set up as needed. GGSN coordinates all reservations since it sees non-encapsulated packets. Use either UpdatePDPContextRequest & ChangePDPContextRequest messages, as well as ModifyPDPContextRequest messages. ...
Chapter 2
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
Paging
... Memory Management Uni-program Memory split into two parts. one for Operating System. one for currently executing program. ...
... Memory Management Uni-program Memory split into two parts. one for Operating System. one for currently executing program. ...
Operating System
... OS shields the details of hardware from applications. In this way, an OS is an extended machine or virtual machine that is easier to program for users to access and use the hardware. ...
... OS shields the details of hardware from applications. In this way, an OS is an extended machine or virtual machine that is easier to program for users to access and use the hardware. ...
Evolution of Operating Systems
... • Usually sharing storage via a Storage-Area Network (SAN). • Provides a high-availability service which survives failures: – Asymmetric clustering has one machine in hot-standby mode – Symmetric clustering has multiple nodes running applications, monitoring each other. ...
... • Usually sharing storage via a Storage-Area Network (SAN). • Provides a high-availability service which survives failures: – Asymmetric clustering has one machine in hot-standby mode – Symmetric clustering has multiple nodes running applications, monitoring each other. ...
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.