PPT - CS
... • Processes can be interrupted by interrupts, exceptions or traps. • An interrupt is a signal to the CPU indicating that an event has occurred, and it results in changes in the sequence of instructions that is executed by the CPU. Interrupts are events which aren’t part of the running program’s regu ...
... • Processes can be interrupted by interrupts, exceptions or traps. • An interrupt is a signal to the CPU indicating that an event has occurred, and it results in changes in the sequence of instructions that is executed by the CPU. Interrupts are events which aren’t part of the running program’s regu ...
Chapter 10 Powerpoint
... – manages computer resources, such as memory and input/output devices – provides an interface through which a human can interact with the computer – allows an application program to interact with these other system resources ...
... – manages computer resources, such as memory and input/output devices – provides an interface through which a human can interact with the computer – allows an application program to interact with these other system resources ...
Module Operating Systems (Server)
... systems. - Different types of NOS and how to choose between them - Determining software requirements for NOS - Case Studies: Comparison of Windows Server 2008 and Linux Processes (8%) - Review: Process concept, schedulers, operations on processes - Cooperating processes: Producer-Consumer problem - ...
... systems. - Different types of NOS and how to choose between them - Determining software requirements for NOS - Case Studies: Comparison of Windows Server 2008 and Linux Processes (8%) - Review: Process concept, schedulers, operations on processes - Cooperating processes: Producer-Consumer problem - ...
Operating System Concepts
... represents a set of standards implemented primarily for UNIX-based operating systems. POSIX-compliant systems must implement the POSIX core standard (POSIX .1)--Linux, Solaris, and Mac OS X. POSIX also defines several extensions to the standards, including real-time extensions (POSIX 1.b) and an ext ...
... represents a set of standards implemented primarily for UNIX-based operating systems. POSIX-compliant systems must implement the POSIX core standard (POSIX .1)--Linux, Solaris, and Mac OS X. POSIX also defines several extensions to the standards, including real-time extensions (POSIX 1.b) and an ext ...
Mapping the Data Warehouse to a Multiprocessor Architecture
... Mapping the Data Warehouse to a Multiprocessor Architecture • The goals of linear performance and scalability can be satisfied by parallel hardware architectures, parallel operating systems, and parallel DBMSs. • Parallel hardware architectures are based on Multi-processor systems designed as a Sha ...
... Mapping the Data Warehouse to a Multiprocessor Architecture • The goals of linear performance and scalability can be satisfied by parallel hardware architectures, parallel operating systems, and parallel DBMSs. • Parallel hardware architectures are based on Multi-processor systems designed as a Sha ...
doc
... Tasks are groups of locally-controlled actions that should get an opportunity to happen. They are use to model “fair” executions. For example, we may want to say that we’re only interested in networks where every process gets to send a message infinitely often (that is, it’s not blocked forever from ...
... Tasks are groups of locally-controlled actions that should get an opportunity to happen. They are use to model “fair” executions. For example, we may want to say that we’re only interested in networks where every process gets to send a message infinitely often (that is, it’s not blocked forever from ...
OPERATING SYSTEMS UNIT I Syllabus: Operating Systems
... 4. What are the various process scheduling concepts? 5. List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user level programs to provide these services. 6. Give an overview about threads. 7. ...
... 4. What are the various process scheduling concepts? 5. List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user level programs to provide these services. 6. Give an overview about threads. 7. ...
Distributed Hash Tables (DHTs)
... – BitTorrent is the most videly used P2P protocol that supports DHT – One user needs to act as the file-provider – Providing a “seed” – .torrent file with metadata – Peers receives different piece of the file – Initial user is relieved – Peer-to-seed shifts – “Swarm” – BitTorrent tracker assists – H ...
... – BitTorrent is the most videly used P2P protocol that supports DHT – One user needs to act as the file-provider – Providing a “seed” – .torrent file with metadata – Peers receives different piece of the file – Initial user is relieved – Peer-to-seed shifts – “Swarm” – BitTorrent tracker assists – H ...
An all-in-one monolithic kernel.
... including spin locks. Because time-slice preemption is the only way another thread can run on a single core, it is possible for the spin lock to fail. ...
... including spin locks. Because time-slice preemption is the only way another thread can run on a single core, it is possible for the spin lock to fail. ...
Document
... Computers and Operating Systems: Shared History Early OS were not designed as such - software was developed as the need arose and eventually OS systems “emerged” Numerous different types of computers were manufactured by many computer companies Each manufacturer’s hardware was different from that of ...
... Computers and Operating Systems: Shared History Early OS were not designed as such - software was developed as the need arose and eventually OS systems “emerged” Numerous different types of computers were manufactured by many computer companies Each manufacturer’s hardware was different from that of ...
What is an Operating System? ¯ Three views of an operating system
... System View: The OS manages the hardware resources of a computer system. ¯ The execution environment provided by the OS includes a variety of abstract ¯ Resources include processors, memory, disks and other storage devices, entities that can be manipulated by a running program. Examples: ...
... System View: The OS manages the hardware resources of a computer system. ¯ The execution environment provided by the OS includes a variety of abstract ¯ Resources include processors, memory, disks and other storage devices, entities that can be manipulated by a running program. Examples: ...
Final Report
... code. The input files tell the programs what they need to be done, telling the program at what time and how long to run the processes. The graphical user interfaces that were pre designed for the deadlock detection and memory management allow the user to step through the program and each time unit a ...
... code. The input files tell the programs what they need to be done, telling the program at what time and how long to run the processes. The graphical user interfaces that were pre designed for the deadlock detection and memory management allow the user to step through the program and each time unit a ...
Bridging the Gap
... – How do you protect the investment? @$1000/node* 50K nodes = $50,000,000 USD ...
... – How do you protect the investment? @$1000/node* 50K nodes = $50,000,000 USD ...
ppt
... • Most IPC implementations perform poorly • Really fast message passing systems are needed to run device drivers and other performance critical components at the user-level. • Result: programmers circumvent IPC, co-locating device drivers in the kernel and defeating the main purpose of the microkern ...
... • Most IPC implementations perform poorly • Really fast message passing systems are needed to run device drivers and other performance critical components at the user-level. • Result: programmers circumvent IPC, co-locating device drivers in the kernel and defeating the main purpose of the microkern ...
Computer Systems Overview
... Well defined interfaces: one layer can be modified without affecting other layers The problem is decomposed into a number of more manageable sub problems ...
... Well defined interfaces: one layer can be modified without affecting other layers The problem is decomposed into a number of more manageable sub problems ...
Amoeba Vs. Mach OS
... provides the buffer directly in user space. In Mach, messages are sent to ports. Mach support port sets, although they are only for receiving, not sending. Mach’s ports are named by capabilities managed by the kernel and referred to by their indices in the kernel’s capability list. Only Mach has SEN ...
... provides the buffer directly in user space. In Mach, messages are sent to ports. Mach support port sets, although they are only for receiving, not sending. Mach’s ports are named by capabilities managed by the kernel and referred to by their indices in the kernel’s capability list. Only Mach has SEN ...
lec01 - CSE @ UCR
... Wait until the last couple of days to start a project We’ll have to do the crunch anyways, why do it early? The projects cannot be done in the last few days Repeat: The projects cannot be done in the last few days Each quarter groups learn that starting early meant finishing all of the projects on t ...
... Wait until the last couple of days to start a project We’ll have to do the crunch anyways, why do it early? The projects cannot be done in the last few days Repeat: The projects cannot be done in the last few days Each quarter groups learn that starting early meant finishing all of the projects on t ...
CSCI1412 - Introduction & Overview
... Mapping files onto secondary storage. File backup on stable (nonvolatile) storage media. ...
... Mapping files onto secondary storage. File backup on stable (nonvolatile) storage media. ...
Memory Protection: Kernel and User Address Spaces
... When a program is copied into memory, a linker-loader alters the code of the program (e.g., loads, stores, and jumps) To use the address of where the program lands in memory This is kind of what happens when you run the command gcc –o [filename]. It links object code into an executable. ...
... When a program is copied into memory, a linker-loader alters the code of the program (e.g., loads, stores, and jumps) To use the address of where the program lands in memory This is kind of what happens when you run the command gcc –o [filename]. It links object code into an executable. ...
Chapter 1
... • Authorizes users to share resources – Overall responsibility for every aspect of network connectivity • Devices, files, memory space, CPU capacity, etc. ...
... • Authorizes users to share resources – Overall responsibility for every aspect of network connectivity • Devices, files, memory space, CPU capacity, etc. ...
Improving Per-Node Efficiency in the Datacenter with New OS
... kernel, all system calls are submitted and completed via the same asynchronous interface, even ones that usually complete immediately instead of blocking. The combination of processes not losing control of their cores and an asynchronous kernel interface allows the decoupling of I/O concurrency from ...
... kernel, all system calls are submitted and completed via the same asynchronous interface, even ones that usually complete immediately instead of blocking. The combination of processes not losing control of their cores and an asynchronous kernel interface allows the decoupling of I/O concurrency from ...
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.