Operating Systems Operating Systems Operating Systems
... • The Bare Bones It's important to realize that not all computers have operating systems. – microwave oven • has one set of relatively simple tasks to perform, • very simple input and output methods (a keypad and an LCD screen), • simple, never-changing hardware to control. • simply runs a single pr ...
... • The Bare Bones It's important to realize that not all computers have operating systems. – microwave oven • has one set of relatively simple tasks to perform, • very simple input and output methods (a keypad and an LCD screen), • simple, never-changing hardware to control. • simply runs a single pr ...
Multiple Processor Systems
... • Problem with communication between two threads – both belong to process A ...
... • Problem with communication between two threads – both belong to process A ...
Multiple Processor Systems
... • Problem with communication between two threads – both belong to process A ...
... • Problem with communication between two threads – both belong to process A ...
Multiple Processor Systems Chapter 8 Multiprocessor Systems
... • Use send & receive rings • coordinates main CPU with on-board CPU ...
... • Use send & receive rings • coordinates main CPU with on-board CPU ...
L02_OperatingSystemEvolution
... CPU, disk and network resources are shared by having applications take short turns at using the resources Memory is shared by splitting the memory space among multiple applications Printers can only be used by a single application until it has finished using it ...
... CPU, disk and network resources are shared by having applications take short turns at using the resources Memory is shared by splitting the memory space among multiple applications Printers can only be used by a single application until it has finished using it ...
Real-Time Operating Systems
... Real-Time System Features Priority-based scheduling Preemptive kernel Preemption points Synchronized mechanisms Minimized latency Interrupt latency Dispatch latency Priority-inheritance protocol ...
... Real-Time System Features Priority-based scheduling Preemptive kernel Preemption points Synchronized mechanisms Minimized latency Interrupt latency Dispatch latency Priority-inheritance protocol ...
Introduction to Object Technology
... Information protection and security Scheduling and resource management System structure ...
... Information protection and security Scheduling and resource management System structure ...
ISA_673-android_presentation_(3) - eee
... • Project Goals – Track usage by resource and process – Modify resource scheduling to ensure fairness ...
... • Project Goals – Track usage by resource and process – Modify resource scheduling to ensure fairness ...
Course - University American College Skopje
... etc.). No matter what the reason, the bottom line is that either (a) the work was completed and turned in when required or (b) the assignment was not completed and turned in when required. As specified earlier, assignments are due in class at the beginning of class on the specified due date. There i ...
... etc.). No matter what the reason, the bottom line is that either (a) the work was completed and turned in when required or (b) the assignment was not completed and turned in when required. As specified earlier, assignments are due in class at the beginning of class on the specified due date. There i ...
File
... mutexes which can be used to achieve synchronization of task and resources. For example, suppose that there is a single platform and there are too many trains who want to acquire the platform at the same time. ...
... mutexes which can be used to achieve synchronization of task and resources. For example, suppose that there is a single platform and there are too many trains who want to acquire the platform at the same time. ...
Module 3: Operating
... UNIX – limited by hardware functionality, the original UNIX operating system had limited structuring. The UNIX OS consists of two separable parts. – Systems programs – The kernel ✴ Consists of everything below the system-call interface and above the physical hardware ✴ Provides the file system, CPU ...
... UNIX – limited by hardware functionality, the original UNIX operating system had limited structuring. The UNIX OS consists of two separable parts. – Systems programs – The kernel ✴ Consists of everything below the system-call interface and above the physical hardware ✴ Provides the file system, CPU ...
Document
... support up to 450 Mbits ! (we eat the ants ! ) A stand-alone active node is not enough to fully support and apply active service to Gbit streams Need to put lightweight network functionalities close to the network Explore kernel services ...
... support up to 450 Mbits ! (we eat the ants ! ) A stand-alone active node is not enough to fully support and apply active service to Gbit streams Need to put lightweight network functionalities close to the network Explore kernel services ...
Device Drivers - EMU CMPE Home Page
... Svetlana Sorokina, Andrey Tihonov, Andrey Scherbakov, Drivers Programming and Security Systems, St-Petersburg, BHV-Petersburg, Moscow, Izdatel Molgacheva S.V., 2002, 256 p., ISBN 5-94157-263-8 (in Russian) Device Drivers are special programs which are used for organization of access to external devi ...
... Svetlana Sorokina, Andrey Tihonov, Andrey Scherbakov, Drivers Programming and Security Systems, St-Petersburg, BHV-Petersburg, Moscow, Izdatel Molgacheva S.V., 2002, 256 p., ISBN 5-94157-263-8 (in Russian) Device Drivers are special programs which are used for organization of access to external devi ...
File
... Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detection – ensure correct computing by detecting errors in the CPU and memory hardware, in I/O ...
... Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detection – ensure correct computing by detecting errors in the CPU and memory hardware, in I/O ...
Operating System Structures
... The operating system creates the illusion of multiple processes, each executing on its own processor with its own (virtual) memory. Virtual Machine: A machine implemented in software, not actual hardware. Also known as a machine emulator, not as OS simulator. Each virtual machine can run any O ...
... The operating system creates the illusion of multiple processes, each executing on its own processor with its own (virtual) memory. Virtual Machine: A machine implemented in software, not actual hardware. Also known as a machine emulator, not as OS simulator. Each virtual machine can run any O ...
Human Computer Interaction
... the Higgins UIMS (described in Hudson and King 1988), and the Arch model (a specialisation of the Seeheim model; see Coutaz et al. 1995, Coutaz 1987, and Coutaz ...
... the Higgins UIMS (described in Hudson and King 1988), and the Arch model (a specialisation of the Seeheim model; see Coutaz et al. 1995, Coutaz 1987, and Coutaz ...
CS4023 * Operating Systems
... • But do care in shared computer such as mainframe or minicomputer must keep all users happy • Also in workstations, with most individual resources but some shared (servers) • Handheld: convenience of use. • Embedded computers: fridges, automobiles, washing machines etc may have little to no user vi ...
... • But do care in shared computer such as mainframe or minicomputer must keep all users happy • Also in workstations, with most individual resources but some shared (servers) • Handheld: convenience of use. • Embedded computers: fridges, automobiles, washing machines etc may have little to no user vi ...
ppt
... Multiprocessing and Distributed Systems • Types of multi-computers • Shared memory multiprocessors • Clusters of separate computers • Distributed systems ...
... Multiprocessing and Distributed Systems • Types of multi-computers • Shared memory multiprocessors • Clusters of separate computers • Distributed systems ...
Overview and Motivation - Operating Systems and Middleware Group
... application connectivity and interoperability problems. However, middleware services are not a panacea: – There is a gap between principles and practice. Many popular middleware services use proprietary implementations (making applications dependent on a single vendor's product). – The sheer number ...
... application connectivity and interoperability problems. However, middleware services are not a panacea: – There is a gap between principles and practice. Many popular middleware services use proprietary implementations (making applications dependent on a single vendor's product). – The sheer number ...
What is Middleware?
... application connectivity and interoperability problems. However, middleware services are not a panacea: – There is a gap between principles and practice. Many popular middleware services use proprietary implementations (making applications dependent on a single vendor's product). – The sheer number ...
... application connectivity and interoperability problems. However, middleware services are not a panacea: – There is a gap between principles and practice. Many popular middleware services use proprietary implementations (making applications dependent on a single vendor's product). – The sheer number ...
資工系網媒所NEWS實驗室
... Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data ...
... Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data ...
Linux Concepts and key ideas
... An operating system is made up of software instructions that lie between the computer hardware and the application software. At the center is the kernel, which functions to control processes, handles memory management, and manages software and hardware communications. Besides the kernel, an operatin ...
... An operating system is made up of software instructions that lie between the computer hardware and the application software. At the center is the kernel, which functions to control processes, handles memory management, and manages software and hardware communications. Besides the kernel, an operatin ...
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.