Department of Computer Science and Engineering
... Another business model is to give away the software in order to sell hardware. This used to be the norm in the computer industry, with operating systems such as CP/M, Apple DOS and versions of Mac OS prior to 7.6 freely copyable (but not modifiable). As computer hardware standardized throughout the ...
... Another business model is to give away the software in order to sell hardware. This used to be the norm in the computer industry, with operating systems such as CP/M, Apple DOS and versions of Mac OS prior to 7.6 freely copyable (but not modifiable). As computer hardware standardized throughout the ...
6up-pdf - ETH Systems Group
... 1. Load the user space stack pointer 2. Adjust the return address to point to: Return path in user space back from the call, OR Loop to retry system call if necessary ...
... 1. Load the user space stack pointer 2. Adjust the return address to point to: Return path in user space back from the call, OR Loop to retry system call if necessary ...
SimOS: A Fast Operating System Simulation Environment
... first system was a port of the Sprite network operating system[18] to run on a Sun SPARCstation under SunOS 4.1. While this system required a rewrite of most of the machine dependent code, the machine independent code remained entirely intact. It first booted multi-user in the fall of 1992, retainin ...
... first system was a port of the Sprite network operating system[18] to run on a Sun SPARCstation under SunOS 4.1. While this system required a rewrite of most of the machine dependent code, the machine independent code remained entirely intact. It first booted multi-user in the fall of 1992, retainin ...
Chapter 2: Operating
... Virtual Machines History and Benefits First appeared commercially in IBM mainframes in 1972 Fundamentally, multiple execution environments (different operating ...
... Virtual Machines History and Benefits First appeared commercially in IBM mainframes in 1972 Fundamentally, multiple execution environments (different operating ...
Running Linux and AUTOSAR side by side
... must at the same time fulfill requirements for two types of systems, which cannot easily be provided by a single operating system. A viable but impractical method for building such a hybrid system is to implement all parts to the same standards according to the highest level of criticality on top of ...
... must at the same time fulfill requirements for two types of systems, which cannot easily be provided by a single operating system. A viable but impractical method for building such a hybrid system is to implement all parts to the same standards according to the highest level of criticality on top of ...
Discovering Computers 2005
... Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Discuss the functions common to most operating systems Describe several stand-alone ...
... Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Discuss the functions common to most operating systems Describe several stand-alone ...
슬라이드 1
... the GNU project, Linux was ready for the actual showdown. It was licensed under GNU General Public License, thus ensuring that the source codes will be free for all to copy, study and to change. Students and computer programmers grabbed it. Soon, commercial vendors moved in. Linux itself was, and is ...
... the GNU project, Linux was ready for the actual showdown. It was licensed under GNU General Public License, thus ensuring that the source codes will be free for all to copy, study and to change. Students and computer programmers grabbed it. Soon, commercial vendors moved in. Linux itself was, and is ...
What is a Process? Answer 1: a process is an abstraction of a
... The OS decides which memory and how much memory each process gets – OS can coordinate shared access to devices (keyboards, disks), since processes use these devices indirectly, by making system calls. – Processes timeshare the processor(s). Again, timesharing is controlled by the operating system. • ...
... The OS decides which memory and how much memory each process gets – OS can coordinate shared access to devices (keyboards, disks), since processes use these devices indirectly, by making system calls. – Processes timeshare the processor(s). Again, timesharing is controlled by the operating system. • ...
Processes and Threads
... Varies between Command-Line (CLI), Graphics User Interface (GUI), Batch ...
... Varies between Command-Line (CLI), Graphics User Interface (GUI), Batch ...
Operating-System Debugging
... Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or length of parameters being ...
... Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or length of parameters being ...
Our Digital World - Computer Information Systems
... • Increased complexity required change. • Mainframe computers had operating systems made by their manufacturer. © Paradigm Publishing, Inc. ...
... • Increased complexity required change. • Mainframe computers had operating systems made by their manufacturer. © Paradigm Publishing, Inc. ...
PPT - LSU CCT - Louisiana State University
... new process, this task is called Context Switch. • The context of a process is represented in the PCB of a process; it includes value of CPU registers, process state and memory management information. • When a context switch occurs, the kernel saves the context of the old process in its PCB and load ...
... new process, this task is called Context Switch. • The context of a process is represented in the PCB of a process; it includes value of CPU registers, process state and memory management information. • When a context switch occurs, the kernel saves the context of the old process in its PCB and load ...
Operating System Theory Guide to Operating Systems
... • The Macintosh was introduced and it seemed to be light years ahead of the IBM PC – Came with a standard graphical user interface (GUI) – MS-DOS was still text-based – Managed the computer memory closely for the software ...
... • The Macintosh was introduced and it seemed to be light years ahead of the IBM PC – Came with a standard graphical user interface (GUI) – MS-DOS was still text-based – Managed the computer memory closely for the software ...
Linux Kernel - Teacher Pages
... goal of UNIX compatibility exclusively on PC platform It has been designed to run efficiently and reliably on common PC hardware, but also runs on a variety of other platforms The core Linux operating system kernel is entirely original, but it can run much existing free UNIX software, resulting ...
... goal of UNIX compatibility exclusively on PC platform It has been designed to run efficiently and reliably on common PC hardware, but also runs on a variety of other platforms The core Linux operating system kernel is entirely original, but it can run much existing free UNIX software, resulting ...
Operating-System Structures
... rest of command interpreter from disk. In FreeBSD the command interpreter may continue running concurrently. Processes may run in the background and if so they cannot receive input directly from keyboard because shell is using it. ...
... rest of command interpreter from disk. In FreeBSD the command interpreter may continue running concurrently. Processes may run in the background and if so they cannot receive input directly from keyboard because shell is using it. ...
Introduction - UW Courses Web Server
... • OS picks one of them to execute • The job may have to wait for a slow I/O operation to complete • OS picks & executes another job • OS Requirements: – Job scheduling – Memory management IBM System/360 CSS 430: Operating Systems - Introduction ...
... • OS picks one of them to execute • The job may have to wait for a slow I/O operation to complete • OS picks & executes another job • OS Requirements: – Job scheduling – Memory management IBM System/360 CSS 430: Operating Systems - Introduction ...
Operating System (OS)
... Run in user mode as an application on top of OS Virtual machine believe they are running on bare hardware but in fact are running inside a user-level application ...
... Run in user mode as an application on top of OS Virtual machine believe they are running on bare hardware but in fact are running inside a user-level application ...
ppt - Computer Science
... • Inter-process communication (ipc) by message passing is one of the central paradigms of u-kernel and client / server architectures. – Increase modularity, flexibility, security and scalability. • But, most ipc implementations of the time performed poorly (1st generation micro-kernels such as Mach ...
... • Inter-process communication (ipc) by message passing is one of the central paradigms of u-kernel and client / server architectures. – Increase modularity, flexibility, security and scalability. • But, most ipc implementations of the time performed poorly (1st generation micro-kernels such as Mach ...
Osprey: Operating System for Predictable Clouds
... little kernel state and spend very little time in the kernel because they run entire network protocol stacks and most file systems in user space. IV. BACKWARD COMPATIBILITY In order to successfully deploy a new cloud infrastructure, it is important to be able to execute legacy applications. There ar ...
... little kernel state and spend very little time in the kernel because they run entire network protocol stacks and most file systems in user space. IV. BACKWARD COMPATIBILITY In order to successfully deploy a new cloud infrastructure, it is important to be able to execute legacy applications. There ar ...
Operating System Services
... Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
... Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
Operating system
... • In batch, total time from submitting a job to getting the output was a few hours, very unproductive for programmers • Timesharing (a variant of multiprogramming) provides for user interaction with the computer system ...
... • In batch, total time from submitting a job to getting the output was a few hours, very unproductive for programmers • Timesharing (a variant of multiprogramming) provides for user interaction with the computer system ...
Chapter 1: Introduction to Operating Systems
... Object technology became popular in many areas of computing – Many applications written in object-oriented programming languages • For example, C++ or Java ...
... Object technology became popular in many areas of computing – Many applications written in object-oriented programming languages • For example, C++ or Java ...
Berkeley Software Distribution
Berkeley Software Distribution (BSD) is a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995. Today the term ""BSD"" is often used non-specifically to refer to any of the BSD descendants which together form a branch of the family of Unix-like operating systems. Operating systems derived from the original BSD code remain actively developed and widely used.Historically, BSD has been considered a branch of Unix, Berkeley Unix, because it shared the initial codebase and design with the original AT&T Unix operating system. In the 1980s, BSD was widely adopted by vendors of workstation-class systems in the form of proprietary Unix variants such as DEC ULTRIX and Sun Microsystems SunOS. This can be attributed to the ease with which it could be licensed, and the familiarity the founders of many technology companies of the time had with it.Although these proprietary BSD derivatives were largely superseded by the UNIX System V Release 4 and OSF/1 systems in the 1990s (both of which incorporated BSD code and are the basis of other modern Unix systems), later BSD releases provided a basis for several open source development projects, e.g. FreeBSD, OpenBSD, NetBSD, Darwin or PC-BSD, that are ongoing. These, in turn, have been incorporated in whole or in part in modern proprietary operating systems, e.g. the TCP/IP networking code in Windows NT 3.1 and most of the foundation of Apple's OS X and iOS.