Lecture OS - University of Wisconsin
... Computation speed-up • Improve performance by overlapping activities or performing work in parallel ...
... Computation speed-up • Improve performance by overlapping activities or performing work in parallel ...
ppt
... • Waiting for any some child to terminate: wait() Blocks until some child terminates Returns the process ID of the child process Or returns -1 if no children exist (i.e., already exited) ...
... • Waiting for any some child to terminate: wait() Blocks until some child terminates Returns the process ID of the child process Or returns -1 if no children exist (i.e., already exited) ...
History of operating systems
... machines was Digital Research's CP/M-80 for the 8080 / 8085 / Z-80 CPUs. It was based on several Digital Equipment Corporation operating systems, mostly for the PDP-11 architecture. MS-DOS (or PC-DOS when supplied by IBM) was based originally on CP/M-80. Each of these machines had a small boot progr ...
... machines was Digital Research's CP/M-80 for the 8080 / 8085 / Z-80 CPUs. It was based on several Digital Equipment Corporation operating systems, mostly for the PDP-11 architecture. MS-DOS (or PC-DOS when supplied by IBM) was based originally on CP/M-80. Each of these machines had a small boot progr ...
and more
... Open Source / Free Open Source – Source code is available to everybody “Free” – Source code is available to everybody, and everybody can redistribute the source code “Copyleft” – Source code is available to everybody, and if you want to distribute the program, you must also distribute the sou ...
... Open Source / Free Open Source – Source code is available to everybody “Free” – Source code is available to everybody, and everybody can redistribute the source code “Copyleft” – Source code is available to everybody, and if you want to distribute the program, you must also distribute the sou ...
Processes - BYU Computer Science Students Homepage Index
... What is a 2-state scheduling model? What additional states are added with a 5-state model? 6. How does a suspended process differ from a blocked process? 7. What task variables are found in a Task Control Table? BYU CS 345 ...
... What is a 2-state scheduling model? What additional states are added with a 5-state model? 6. How does a suspended process differ from a blocked process? 7. What task variables are found in a Task Control Table? BYU CS 345 ...
Slide 1
... Open Source / Free Open Source – Source code is available to everybody “Free” – Source code is available to everybody, and everybody can redistribute the source code “Copyleft” – Source code is available to everybody, and if you want to distribute the program, you must also distribute the sou ...
... Open Source / Free Open Source – Source code is available to everybody “Free” – Source code is available to everybody, and everybody can redistribute the source code “Copyleft” – Source code is available to everybody, and if you want to distribute the program, you must also distribute the sou ...
CS111 Operating Systems Principles Introduction to Operating
... – foundation concepts and principles – common problems that have been solved in OS – evolving directions in system architecture ...
... – foundation concepts and principles – common problems that have been solved in OS – evolving directions in system architecture ...
CMPS431 Syllabus, Fall 2009
... Demonstrate the potential run-time problems arising from the concurrent operation of many separate tasks. Summarize the range of mechanisms that can be employed at the operating system level to realize concurrent systems and describe the benefits of each. Explain the different states that a task may ...
... Demonstrate the potential run-time problems arising from the concurrent operation of many separate tasks. Summarize the range of mechanisms that can be employed at the operating system level to realize concurrent systems and describe the benefits of each. Explain the different states that a task may ...
Wally Mead - ConfigMgr 2012 SP1 Slidedeck - November
... • Install new version of operating system on existing client or server hardware • Reinstall applications under new operating system • For clients, securely save/restore user state and settings (locally or on a file server) ...
... • Install new version of operating system on existing client or server hardware • Reinstall applications under new operating system • For clients, securely save/restore user state and settings (locally or on a file server) ...
Introduction to Database Systems
... AUI is glued to operating systems kernel via the language libraries and system call interface. System calls- a set of functions that can be used by applications and library routines to start execution of the kernel code for particular service, reading or writing a file.. The kernel is the part of an ...
... AUI is glued to operating systems kernel via the language libraries and system call interface. System calls- a set of functions that can be used by applications and library routines to start execution of the kernel code for particular service, reading or writing a file.. The kernel is the part of an ...
Solaris Symmetric Multiprocessing
... its success as a multiprocessor operating system: •The ability to run operating system code on any available processor and on multiple processors at the same time •Multiple threads of execution within a single process, each of which can execute simultaneously on different processors •Fine-grained sy ...
... its success as a multiprocessor operating system: •The ability to run operating system code on any available processor and on multiple processors at the same time •Multiple threads of execution within a single process, each of which can execute simultaneously on different processors •Fine-grained sy ...
2.01 - Computer Science at Rutgers
... One set of operating-system services provides functions that are ...
... One set of operating-system services provides functions that are ...
Operating Systems (G53OPS) - Examination Question 1 Operating
... Protection depends on the system. Personal systems (MS-DOS) need less protection than mainframes. UNIX takes a way between with the rwx scheme. Disks may differ in sector size. The OS should offer one block size and the device independent software must do the translation. This is related to the conc ...
... Protection depends on the system. Personal systems (MS-DOS) need less protection than mainframes. UNIX takes a way between with the rwx scheme. Disks may differ in sector size. The OS should offer one block size and the device independent software must do the translation. This is related to the conc ...
2000 - 2001
... Protection depends on the system. Personal systems (MS-DOS) need less protection than mainframes. UNIX takes a way between with the rwx scheme. Disks may differ in sector size. The OS should offer one block size and the device independent software must do the translation. This is related to the conc ...
... Protection depends on the system. Personal systems (MS-DOS) need less protection than mainframes. UNIX takes a way between with the rwx scheme. Disks may differ in sector size. The OS should offer one block size and the device independent software must do the translation. This is related to the conc ...
Lecture 12: Protection: Kernel and Address Spaces 12.0 Main Points
... machine, by giving it reality of a dedicated machine). For example, load application into low memory, operating system into high memory. Application can address any physical memory location. ...
... machine, by giving it reality of a dedicated machine). For example, load application into low memory, operating system into high memory. Application can address any physical memory location. ...
an outline of a course on operating system principles
... relations hold between the data before and after each operation. So sequential processes closely mirror our thinking habits, but a computer system is utilized better when its various parts operate concurrently. As a compromise, we try to partition our problems into a moderate number of sequential ac ...
... relations hold between the data before and after each operation. So sequential processes closely mirror our thinking habits, but a computer system is utilized better when its various parts operate concurrently. As a compromise, we try to partition our problems into a moderate number of sequential ac ...
Chorusamoeba
... application programs, extension to the UNIX abstraction to distributed environment, permit application developers to implement their own services such as window managers The file system is fully distributed and file access is location ...
... application programs, extension to the UNIX abstraction to distributed environment, permit application developers to implement their own services such as window managers The file system is fully distributed and file access is location ...
Operating Systems: Why Object-Oriented?
... Having established the motivation for opening up mapping decisions to clients, the question then becomes how to do it well. We want to avoid drowning clients in too many details, or overconstraining service implementors, or any other such problems. We must remember that the original reason for attem ...
... Having established the motivation for opening up mapping decisions to clients, the question then becomes how to do it well. We want to avoid drowning clients in too many details, or overconstraining service implementors, or any other such problems. We must remember that the original reason for attem ...
Course Review
... An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface is more convenient than the raw hardware interface. ...
... An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface is more convenient than the raw hardware interface. ...
slides 1
... An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface is more convenient than the raw hardware interface. ...
... An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface is more convenient than the raw hardware interface. ...
Presentation
... The producer-consumer problem illustrates the need for synchronization in systems where many processes share a resource. In the problem, two processes share a fixed-size buffer. One process produces information and puts it in the buffer, while the other process consumes information from the buffer. ...
... The producer-consumer problem illustrates the need for synchronization in systems where many processes share a resource. In the problem, two processes share a fixed-size buffer. One process produces information and puts it in the buffer, while the other process consumes information from the buffer. ...
Introduction to Object Technology
... A process may be linked to other processes in a queue, ring, or some other structure. For example, all processes in a waiting state for a particular priority level may be linked in a queue. A process may exhibit a parent-child (creator-created) relationship with another process. The PCB may contain ...
... A process may be linked to other processes in a queue, ring, or some other structure. For example, all processes in a waiting state for a particular priority level may be linked in a queue. A process may exhibit a parent-child (creator-created) relationship with another process. The PCB may contain ...
William Stallings Computer Organization and Architecture
... • Allows programs to be altered and recompiled independently, without re-linking and re-loading • Lends itself to sharing among processes • Lends itself to protection • Some systems combine segmentation with ...
... • Allows programs to be altered and recompiled independently, without re-linking and re-loading • Lends itself to sharing among processes • Lends itself to protection • Some systems combine segmentation with ...
slides
... • A virtual-machine system is a perfect vehicle for operatingsystems research and development. System development is done on the virtual machine, instead of on a physical machine and so does not disrupt normal system operation. • The virtual machine concept is difficult to implement due to the effor ...
... • A virtual-machine system is a perfect vehicle for operatingsystems research and development. System development is done on the virtual machine, instead of on a physical machine and so does not disrupt normal system operation. • The virtual machine concept is difficult to implement due to the effor ...
Document
... programs. – Pascal is very good for writing wellstructured and readable programs, but it is not as flexible as the C programming language. – C++ embodies powerful object-oriented features, but it is complex and difficult to learn. ...
... programs. – Pascal is very good for writing wellstructured and readable programs, but it is not as flexible as the C programming language. – C++ embodies powerful object-oriented features, but it is complex and difficult to learn. ...