Computer Organisation Operating Systems
... • Processor’s time is shared among multiple users. • Because of slow human reaction time, a typical user needs 1-2 second to interact with the system. The idle system can be utilised by other user. • The OS is more complicate because a job may be swapped in and out of memory to disk. ...
... • Processor’s time is shared among multiple users. • Because of slow human reaction time, a typical user needs 1-2 second to interact with the system. The idle system can be utilised by other user. • The OS is more complicate because a job may be swapped in and out of memory to disk. ...
Windows Server 2008
... • In Windows, the MBR consists of four elements: – The boot program – examines the partition table to determine which partition to boot from – The disk signature – stores information about the disk and is used by management software such as the Windows registry – The partition table for the active p ...
... • In Windows, the MBR consists of four elements: – The boot program – examines the partition table to determine which partition to boot from – The disk signature – stores information about the disk and is used by management software such as the Windows registry – The partition table for the active p ...
General-purpose Process Migration
... [T*90], SPIN [Be*95], and Sprite [DO91] fall into this category. More efficient implementations of this strategy are possible in operating systems such as SolarisMC [K*96] running on symmetric multiprocessors (SMP) or cache-coherent shared-memory machines because of additional hardware support. Bene ...
... [T*90], SPIN [Be*95], and Sprite [DO91] fall into this category. More efficient implementations of this strategy are possible in operating systems such as SolarisMC [K*96] running on symmetric multiprocessors (SMP) or cache-coherent shared-memory machines because of additional hardware support. Bene ...
Figure 5.01 - College of the Holy Cross
... Can serve clients concurrently with multiple threads. It takes less overhead to use multiple threads than to use multiple processes. Operating System Concepts ...
... Can serve clients concurrently with multiple threads. It takes less overhead to use multiple threads than to use multiple processes. Operating System Concepts ...
Distributed Systems
... access these resources, including naming, communication and scheduling The software for multiple CPU systems can be divided into three rough classes ...
... access these resources, including naming, communication and scheduling The software for multiple CPU systems can be divided into three rough classes ...
Comparison of Amoeba Vs Mach Operating Systems
... much smaller microkernel. This system implements only basic Mach features in the kernel; all UNIX-specific code has been evicted to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system, or the simultaneous execution of multipl ...
... much smaller microkernel. This system implements only basic Mach features in the kernel; all UNIX-specific code has been evicted to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system, or the simultaneous execution of multipl ...
Figure 5.01
... API specifies behavior of the thread library, implementation is up to development of the library. Common in UNIX operating systems. ...
... API specifies behavior of the thread library, implementation is up to development of the library. Common in UNIX operating systems. ...
Chapter 21 - Linux Operating System
... History Linux is a modern, free operating system based on UNIX ...
... History Linux is a modern, free operating system based on UNIX ...
Lecture 1: Course Introduction and Overview
... – The OS and the hardware are protected from user programs and user programs are isolated from one another by controlling the translation from program virtual addresses to machine physical addresses ...
... – The OS and the hardware are protected from user programs and user programs are isolated from one another by controlling the translation from program virtual addresses to machine physical addresses ...
Week 1
... Resources and sharing • On the other hand if we can have the CPU do something else while it is waiting for a resource we can make better use of the CPU resource – we won’t waste as much of the capability of the resource • If we were to do this then we would be able to share the CPU resource among m ...
... Resources and sharing • On the other hand if we can have the CPU do something else while it is waiting for a resource we can make better use of the CPU resource – we won’t waste as much of the capability of the resource • If we were to do this then we would be able to share the CPU resource among m ...
Workshop 5 Slide
... Disk striping uses a group of disks as one storage unit. RAID schemes improve performance and improve the reliability of the storage system by storing redundant data. – Mirroring or shadowing keeps duplicate of each disk. – 5 different levels in all. ...
... Disk striping uses a group of disks as one storage unit. RAID schemes improve performance and improve the reliability of the storage system by storing redundant data. – Mirroring or shadowing keeps duplicate of each disk. – 5 different levels in all. ...
Shared Memory IPC
... Many aspects of IPC mechanisms are duals of each other Which implies that these mechanisms have the same power First recognized in context of messages vs. procedure calls At least, IPC mechanisms can be simulated by each other Depends on model of computation And on philosophy of user In particular c ...
... Many aspects of IPC mechanisms are duals of each other Which implies that these mechanisms have the same power First recognized in context of messages vs. procedure calls At least, IPC mechanisms can be simulated by each other Depends on model of computation And on philosophy of user In particular c ...
Silberschatz, Galvin and Gagne ©2013 Operating System Concepts
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
linux: a product of the internet
... minicomputers could perform the same functions less expensively. Today workstations, PCs, and Macs have challenged the minis in much the same way, far surpassing even newer minicomputers in cost and performance. Powerful 64-bit processor chips; plentiful, inexpensive memory; and lower-priced hard-d ...
... minicomputers could perform the same functions less expensively. Today workstations, PCs, and Macs have challenged the minis in much the same way, far surpassing even newer minicomputers in cost and performance. Powerful 64-bit processor chips; plentiful, inexpensive memory; and lower-priced hard-d ...
UNIT-1 Operating System Concept
... 1. List out attributes of file. 2 times 2. List out the operation on directory 3. Define the absolute and relative path (3 times) 4. List out different file types. OR Explain different file types. 5. What source file ? 6. What is object file? 7. What is executable file? Give two form of binary execu ...
... 1. List out attributes of file. 2 times 2. List out the operation on directory 3. Define the absolute and relative path (3 times) 4. List out different file types. OR Explain different file types. 5. What source file ? 6. What is object file? 7. What is executable file? Give two form of binary execu ...
Silberschatz, Galvin and Gagne ©2009 Operating System Concepts
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
developing a saas-cloud integrated development environment (ide)
... network which provide software as a service (SaaS). SaaS means that user only access the software and storage in the cloud architecture, without knowing what inside the cloud server. The system designed is a system that adopts cloud architecture in general. A server connected to a network/internet w ...
... network which provide software as a service (SaaS). SaaS means that user only access the software and storage in the cloud architecture, without knowing what inside the cloud server. The system designed is a system that adopts cloud architecture in general. A server connected to a network/internet w ...
system programs
... based on Unix standards. First developed as a small but self-contained kernel in 1991 by Linus Torvalds, with the major design goal of Unix compatibility. Its history has been one of collaboration by many users from all around the world. ...
... based on Unix standards. First developed as a small but self-contained kernel in 1991 by Linus Torvalds, with the major design goal of Unix compatibility. Its history has been one of collaboration by many users from all around the world. ...
I/O Systems
... Without I/O, computers are useless (disembodied brains?) But… thousands of devices, each slightly different How can we standardize the interfaces to these devices? Devices unreliable: media failures and transmission errors How can we make them reliable??? Devices unpredictable and/or slo ...
... Without I/O, computers are useless (disembodied brains?) But… thousands of devices, each slightly different How can we standardize the interfaces to these devices? Devices unreliable: media failures and transmission errors How can we make them reliable??? Devices unpredictable and/or slo ...
The Case for VOS - The Vector Operating System
... Extensions (SSE) In 2001 SSE was expanded to SSE2, and then subsequently to SSE3 in 2004 and to SSE4 in 2006 In 2008 the Advanced Vector Extensions (AVX) were proposed... first CPU supporting AVX showed up in ...
... Extensions (SSE) In 2001 SSE was expanded to SSE2, and then subsequently to SSE3 in 2004 and to SSE4 in 2006 In 2008 the Advanced Vector Extensions (AVX) were proposed... first CPU supporting AVX showed up in ...
The BaBar Online Detector Control System Update
... Channel access (monitoring, archiving, GUIs) ...
... Channel access (monitoring, archiving, GUIs) ...
This is a software platform and operating system for mobile
... data which was somewhat higher than the previous generation. As the time passed the next digital generation came into existence which is the 2G i.e. the second generation cellular network. Its features were somewhat enhanced than the previous generations. It had voice, sms and circuit switched data ...
... data which was somewhat higher than the previous generation. As the time passed the next digital generation came into existence which is the 2G i.e. the second generation cellular network. Its features were somewhat enhanced than the previous generations. It had voice, sms and circuit switched data ...
Abstract View of System Components
... – API specifies behavior of the thread library, implementation is up to development of the library. – Common in UNIX operating systems. – Pthreads are defined as a set of C language programming types and procedure calls, implemented with a pthread.h header/include file and a thread library. ...
... – API specifies behavior of the thread library, implementation is up to development of the library. – Common in UNIX operating systems. – Pthreads are defined as a set of C language programming types and procedure calls, implemented with a pthread.h header/include file and a thread library. ...
