Discovering Computers 2005
... stand-alone operating systems Summarize the startup process on a personal computer Identify various network operating systems Describe the functions of an operating system ...
... stand-alone operating systems Summarize the startup process on a personal computer Identify various network operating systems Describe the functions of an operating system ...
I/O and Storage Management
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
ch10
... Mapping proceeds in order through that track, then the rest of the tracks in that cylinder, and then through the rest of the cylinders from outermost to innermost ...
... Mapping proceeds in order through that track, then the rest of the tracks in that cylinder, and then through the rest of the cylinders from outermost to innermost ...
Copyright © 1997 IEEE. Reprinted from Proceedings of the Third
... to implement such features as copy-on-write [1, 42], and can also cause significant overhead when used frequently. The synonym problem has been solved in hardware using schemes such as dual tag sets [22] or back-pointers [51], but these require complex control logic that can impede high clock rates. ...
... to implement such features as copy-on-write [1, 42], and can also cause significant overhead when used frequently. The synonym problem has been solved in hardware using schemes such as dual tag sets [22] or back-pointers [51], but these require complex control logic that can impede high clock rates. ...
What is an Operating System?
... ■ I/O devices and the CPU can execute concurrently ■ Each device controller is in charge of a particular device type ■ Each device controller has local buffers ■ CPU moves data from/to main memory to/from local buffers ■ I/O is from the device to local buffer of controller ■ Device controller inform ...
... ■ I/O devices and the CPU can execute concurrently ■ Each device controller is in charge of a particular device type ■ Each device controller has local buffers ■ CPU moves data from/to main memory to/from local buffers ■ I/O is from the device to local buffer of controller ■ Device controller inform ...
an introduction to solaris
... running on it; and supplying a set of system services for those programs to use. The Solaris kernel, like that of other operating systems implementations, provides a virtual machine environment that shields programs from the underlying hardware and allows multiple programs to execute concurrently on ...
... running on it; and supplying a set of system services for those programs to use. The Solaris kernel, like that of other operating systems implementations, provides a virtual machine environment that shields programs from the underlying hardware and allows multiple programs to execute concurrently on ...
2.01 - Suan Dusit Rajabhat University
... be recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash. The log is stored in the third metadata file at the beginning of ...
... be recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash. The log is stored in the third metadata file at the beginning of ...
OPERATING SYSTEM : AN OVERVIEW – [UNIT
... stand-alone functionality, provisions for handing communication and transfer of program and data among the other computers with which it is connected. Network operating systems are not fundamentally different from single processor operating systems. They obviously need a network interface controller ...
... stand-alone functionality, provisions for handing communication and transfer of program and data among the other computers with which it is connected. Network operating systems are not fundamentally different from single processor operating systems. They obviously need a network interface controller ...
ch22
... Object names are structured like file path names in MS-DOS and UNIX. XP implements a symbolic link object, which is similar to symbolic links in UNIX that allow multiple nicknames or aliases to refer to the same file. A process gets an object handle by creating an object by opening an existing one, ...
... Object names are structured like file path names in MS-DOS and UNIX. XP implements a symbolic link object, which is similar to symbolic links in UNIX that allow multiple nicknames or aliases to refer to the same file. A process gets an object handle by creating an object by opening an existing one, ...
No Slide Title
... Object names are structured like file path names in MSDOS and UNIX. 2000 implements a symbolic link object, which is similar to symbolic links in UNIX that allow multiple nicknames or aliases to refer to the same file. A process gets an object handle by creating an object by opening an existing one, ...
... Object names are structured like file path names in MSDOS and UNIX. 2000 implements a symbolic link object, which is similar to symbolic links in UNIX that allow multiple nicknames or aliases to refer to the same file. A process gets an object handle by creating an object by opening an existing one, ...
Final Review Questions
... What are the factors influencing the selection of a disk-scheduling algorithm? Answer: Performance of a scheduling algorithm depends heavily on the number and types of requests. Requests for disk service can be greatly influenced by the fileallocation method. The location of directories and index bl ...
... What are the factors influencing the selection of a disk-scheduling algorithm? Answer: Performance of a scheduling algorithm depends heavily on the number and types of requests. Requests for disk service can be greatly influenced by the fileallocation method. The location of directories and index bl ...
What is an Operating System? - E
... z Wait instruction idles the CPU until the next interrupt z Wait loop (contention for memory access) z At most one I/O request is outstanding at a time, no simultaneous I/O processing After I/O starts, control returns to user program without waiting for I/O completion z System call – request to th ...
... z Wait instruction idles the CPU until the next interrupt z Wait loop (contention for memory access) z At most one I/O request is outstanding at a time, no simultaneous I/O processing After I/O starts, control returns to user program without waiting for I/O completion z System call – request to th ...
process
... • Manage the resources used by the processes/threads • Tools to create/destroy/manipulate processes & threads • Tools to time-multiplex the CPU – Scheduling the (Chapter 7) • Tools to allow threads to synchronization the operation with one another (Chapters 8-9) • Mechanisms to handle deadlock (Chap ...
... • Manage the resources used by the processes/threads • Tools to create/destroy/manipulate processes & threads • Tools to time-multiplex the CPU – Scheduling the (Chapter 7) • Tools to allow threads to synchronization the operation with one another (Chapters 8-9) • Mechanisms to handle deadlock (Chap ...
Monday, 26 November, 2007.
... user of a computer and the computer hardware. Can you name examples of operating systems? Operating system goals: Execute user programs and make solving user problems easier. Make the computer system convenient to use. Use the computer hardware in an efficient manner. What do you use the ope ...
... user of a computer and the computer hardware. Can you name examples of operating systems? Operating system goals: Execute user programs and make solving user problems easier. Make the computer system convenient to use. Use the computer hardware in an efficient manner. What do you use the ope ...
Lecture 1: Course Introduction and Overview
... Example: Protecting Processes from Each Other • Problem: Run multiple applications in such a way that they are protected from one another ...
... Example: Protecting Processes from Each Other • Problem: Run multiple applications in such a way that they are protected from one another ...
Set 1
... Computer-System Operation I/O devices and the CPU can execute concurrently. Each device controller is in charge of a particular device type. Each device controller has a local buffer. CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of contro ...
... Computer-System Operation I/O devices and the CPU can execute concurrently. Each device controller is in charge of a particular device type. Each device controller has a local buffer. CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of contro ...
IV. Parallel Operating Systems
... In order to keep these processor caches coherent and thereby give each processor a consistent view of the main memory a hardware coherence protocol is implemented. There are two techniques for maintaining cache coherence: directory based and bus snooping protocols. Bus snooping is possible only when ...
... In order to keep these processor caches coherent and thereby give each processor a consistent view of the main memory a hardware coherence protocol is implemented. There are two techniques for maintaining cache coherence: directory based and bus snooping protocols. Bus snooping is possible only when ...
ppt - UF CISE
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
Chapter 1: Introduction
... Symmetric clustering has multiple nodes running applications, monitoring each other ...
... Symmetric clustering has multiple nodes running applications, monitoring each other ...
A Survey of Contemporary Real-time Operating Systems
... probability of missing a deadline can be tolerated. Systems in which performance is degraded but not destroyed by failure to meet response time constraints are called soft real-time systems. An embedded system is a specialized real-time computer system that is part of a larger system. In the past, i ...
... probability of missing a deadline can be tolerated. Systems in which performance is degraded but not destroyed by failure to meet response time constraints are called soft real-time systems. An embedded system is a specialized real-time computer system that is part of a larger system. In the past, i ...
What is an Operating System?
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
Introduction CS 111 On-Line MS Program Operating Systems Peter
... – Where the process’ memory is located – What are the contents of important registers – What other resources (physical or virtual) are available to the process ...
... – Where the process’ memory is located – What are the contents of important registers – What other resources (physical or virtual) are available to the process ...
1.01 - Kau
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
