A Survey of Contemporary Real-time Operating Systems
... • All kernel objects (such as processes, threads, critical sections, mutexes, events and semaphores) are dynamically allocated in virtual memory. • For portability, an equipment adaptation layer ...
... • All kernel objects (such as processes, threads, critical sections, mutexes, events and semaphores) are dynamically allocated in virtual memory. • For portability, an equipment adaptation layer ...
Distributed systems
... • Build using a distributed system from a network of workstations connected by high speed network. • Each workstation is an independent computer with its own operating system, memory and other resources like hard disks, file system and databases ...
... • Build using a distributed system from a network of workstations connected by high speed network. • Each workstation is an independent computer with its own operating system, memory and other resources like hard disks, file system and databases ...
Slide
... • A task created by the OS, running in a restricted virtual machine environment –a virtual CPU, virtual memory environment, interface to the OS via system calls • Sequential, instruction-at-a-time execution of a program. Operating system abstraction to represent what is needed to run a single, multi ...
... • A task created by the OS, running in a restricted virtual machine environment –a virtual CPU, virtual memory environment, interface to the OS via system calls • Sequential, instruction-at-a-time execution of a program. Operating system abstraction to represent what is needed to run a single, multi ...
A real-time operating system
... systems that had been developed for mainframes and minis; minimalistic operating systems were developed, often loaded from ROM and known as monitors. One notable early disk operating system was CP/M, which was supported on many early microcomputers and was closely imitated by Microsoft's MS-DOS, whi ...
... systems that had been developed for mainframes and minis; minimalistic operating systems were developed, often loaded from ROM and known as monitors. One notable early disk operating system was CP/M, which was supported on many early microcomputers and was closely imitated by Microsoft's MS-DOS, whi ...
Operating System Services
... Internal structure of different Operating Systems can vary widely Start the design by defining goals and specifications Affected by choice of hardware, type of system User goals and System goals User goals – operating system should be convenient to use, easy to learn, reliable, safe, and f ...
... Internal structure of different Operating Systems can vary widely Start the design by defining goals and specifications Affected by choice of hardware, type of system User goals and System goals User goals – operating system should be convenient to use, easy to learn, reliable, safe, and f ...
Distributed Operating Systems
... Developed by A.S. Tanenbaum (1983 onwards) as a research tool, it uses a large number of CPUs, . Communication via RPC and provides relatively good distributive transparency, security with efficient communication but suffers from a lack of user control Aim was to develop a transparent distributed op ...
... Developed by A.S. Tanenbaum (1983 onwards) as a research tool, it uses a large number of CPUs, . Communication via RPC and provides relatively good distributive transparency, security with efficient communication but suffers from a lack of user control Aim was to develop a transparent distributed op ...
sample unformatted document
... had been developed for mainframes and minis; minimalistic operating systems were developed, often loaded from ROM and known as monitors. One notable early disk operating system was CP/M, which was supported on many early microcomputers and was closely imitated by Microsoft's MSDOS, which became wide ...
... had been developed for mainframes and minis; minimalistic operating systems were developed, often loaded from ROM and known as monitors. One notable early disk operating system was CP/M, which was supported on many early microcomputers and was closely imitated by Microsoft's MSDOS, which became wide ...
Computer Network and Infrastructure
... Need to make scheduling decisions based on process sets Eg. If a larger number of employees log onto a system from department, we would like to see their performance degraded rather than degrading of all user performance. ...
... Need to make scheduling decisions based on process sets Eg. If a larger number of employees log onto a system from department, we would like to see their performance degraded rather than degrading of all user performance. ...
Operating System
... are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
... are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
Introduction to Operating Systems
... • Operating System as a Virtual Machine: – An interface between the user and hardware that hides the details of the hardware (e.g., I/O). – Constructs higher-level (virtual) resources out of lower-level (physical) resources (e.g., files). – Definition: OS is a collection of software enhancements, ex ...
... • Operating System as a Virtual Machine: – An interface between the user and hardware that hides the details of the hardware (e.g., I/O). – Constructs higher-level (virtual) resources out of lower-level (physical) resources (e.g., files). – Definition: OS is a collection of software enhancements, ex ...
00-course description
... NO midterm makeup exams unless: You must bring a medical excuses from ...
... NO midterm makeup exams unless: You must bring a medical excuses from ...
00-course description - pnu-cs-os
... NO midterm makeup exams unless: You must bring a medical excuses from ...
... NO midterm makeup exams unless: You must bring a medical excuses from ...
Operating-System Structures
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other Protection involves ensuring that all access to system resources is controlled Security of ...
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other Protection involves ensuring that all access to system resources is controlled Security of ...
Operating Systems 2014/2015 Part VII – Storage Devices
... Disk Scheduling – Discussion All these algorithms focus on minimizing seek time but, for modern disks, ...
... Disk Scheduling – Discussion All these algorithms focus on minimizing seek time but, for modern disks, ...
EN_C2_Eng - BCS Koolitus
... processor is cyclically assigned to each program for a quantum. The operating systems that use this strategy are called time-sharing. Several users using a timesharing system at the same time are unaware of each other, and each of them believes he has the entire system for himself Batch and time-sha ...
... processor is cyclically assigned to each program for a quantum. The operating systems that use this strategy are called time-sharing. Several users using a timesharing system at the same time are unaware of each other, and each of them believes he has the entire system for himself Batch and time-sha ...
Using Interaction Networks for Visualisation of Message Passing
... application-programmer interfaces are heavily based on Unix, the internal structure of MINIX is quite different to the monolithic structure of traditional Unix kernels. In MINIX, the operating system consists of three programs and around ten processes. The kernel program contains code for handling t ...
... application-programmer interfaces are heavily based on Unix, the internal structure of MINIX is quite different to the monolithic structure of traditional Unix kernels. In MINIX, the operating system consists of three programs and around ten processes. The kernel program contains code for handling t ...
Lecture 1: Course Introduction and Overview
... – MS/DOS, early Macintosh, batch processing – Easier for operating system builder – Get rid of concurrency (only one thread accessing resources!) – Does this make sense for personal computers? ...
... – MS/DOS, early Macintosh, batch processing – Easier for operating system builder – Get rid of concurrency (only one thread accessing resources!) – Does this make sense for personal computers? ...
PPT Chapter 13
... – Record address calculation consumes CPU time – Some recording capacity of disk is wasted – Dummy records exist for key values that are not in use ...
... – Record address calculation consumes CPU time – Some recording capacity of disk is wasted – Dummy records exist for key values that are not in use ...
Embedding Object Files in an Existing Operating System: A Practical Approach
... Non-Object-Oriented OS. Most of the available ObjectOriented languages rely on slow interpreters and require much run-time. Since C++ supports a minimalist view of Object-Oriented programming. The strengths of C++ are that it is efficient, portable, and available upon a variety of platforms. The pro ...
... Non-Object-Oriented OS. Most of the available ObjectOriented languages rely on slow interpreters and require much run-time. Since C++ supports a minimalist view of Object-Oriented programming. The strengths of C++ are that it is efficient, portable, and available upon a variety of platforms. The pro ...
CS430 – Operating Systems 07/06/2006 – 08/27/2006 – Fort Collins Facilitator Information
... Question 2: Discuss the interrupt architecture and Direct Memory Access (DMA). Explain how these techniques work. ...
... Question 2: Discuss the interrupt architecture and Direct Memory Access (DMA). Explain how these techniques work. ...
ppt
... Stateless protocols such as NFS include all information in each request, allowing easy recovery but less ...
... Stateless protocols such as NFS include all information in each request, allowing easy recovery but less ...
Chapter 9: File-System Interface
... Stateless protocols such as NFS include all information in each request, allowing easy recovery but less ...
... Stateless protocols such as NFS include all information in each request, allowing easy recovery but less ...
Chapter 2: System Structures
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program ...
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program ...