Ch01 - Min-Shiang Hwang
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization ...
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization ...
The Nachos Instructional Operating System
... life for professional operating system engineers, but it did not seem advisable for us to make this experience our students' rst introduction to operating systems. Instead of using UNIX signals to simulate asynchronous devices such as the disk and the timer, Nachos maintains a simulated time that i ...
... life for professional operating system engineers, but it did not seem advisable for us to make this experience our students' rst introduction to operating systems. Instead of using UNIX signals to simulate asynchronous devices such as the disk and the timer, Nachos maintains a simulated time that i ...
2.01 - Computer Science Building, Colorado State University
... so frequently that users can interact with each job while it is running, creating interactive computing ...
... so frequently that users can interact with each job while it is running, creating interactive computing ...
OPERATING- SYSTEM CONCEPTS with Java
... they should be incorporated as part of the operating system. By doing so, they can provide better performance and better integration with the rest of the system. In addition, these important applications can have the same look-and-feel as the operating system software. Counterpoint. The fundamental ...
... they should be incorporated as part of the operating system. By doing so, they can provide better performance and better integration with the rest of the system. In addition, these important applications can have the same look-and-feel as the operating system software. Counterpoint. The fundamental ...
Chapter 1 – 8 Essay Question Review
... interpreter jumps to the appropriate section of code, executes the command, and returns control back to the user. In the second approach, the interpreter loads the appropriate program into memory along with the appropriate arguments. The advantage of the first method is speed and overall simplicity. ...
... interpreter jumps to the appropriate section of code, executes the command, and returns control back to the user. In the second approach, the interpreter loads the appropriate program into memory along with the appropriate arguments. The advantage of the first method is speed and overall simplicity. ...
Introduction - McMaster Computing and Software
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
(1) What is operating System? Explain the abstract view of the
... Multiple jobs are executed by the simultaneously by switching the CPU back and forth among them. The switching occurs so frequently (speedy) that the users can identify the presence of other users or programs and also he may interact with his own program while it is running. Processor’s time is shar ...
... Multiple jobs are executed by the simultaneously by switching the CPU back and forth among them. The switching occurs so frequently (speedy) that the users can identify the presence of other users or programs and also he may interact with his own program while it is running. Processor’s time is shar ...
Appendix C - Windows 2000
... of code. C.3.2.1 Threads and Scheduling As do many modern operating systems, Windows 2000 uses the notions of processes and threads for executable code. The process has a virtual-memory address space, and information such as a base priority and an affinity for one or more processors. Each process ha ...
... of code. C.3.2.1 Threads and Scheduling As do many modern operating systems, Windows 2000 uses the notions of processes and threads for executable code. The process has a virtual-memory address space, and information such as a base priority and an affinity for one or more processors. Each process ha ...
PPT - Bilkent University Computer Engineering Department
... Driver polls the controller until data is available or operation is complete Waste of CPU with useless polling (busy waiting) Driver starts I/O by giving commands to the controller Process is blocked CPU is given to an other process Controller does the job independent of CPU and when finished, gives ...
... Driver polls the controller until data is available or operation is complete Waste of CPU with useless polling (busy waiting) Driver starts I/O by giving commands to the controller Process is blocked CPU is given to an other process Controller does the job independent of CPU and when finished, gives ...
What is an Operating System?
... The one program running at all times on the computer is the kernel. Everything else is either a system program (ships with the operating system) or an application program." ...
... The one program running at all times on the computer is the kernel. Everything else is either a system program (ships with the operating system) or an application program." ...
the linux operating system
... kernel is one that includes virtually all of the OS functionality in one large block of code ...
... kernel is one that includes virtually all of the OS functionality in one large block of code ...
204341 Operating Systems
... 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 controlle ...
... 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 controlle ...
Chapter 1
... Figure 1-23. The Win32 API calls that roughly correspond to the UNIX calls of Fig. 1-18. Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639 ...
... Figure 1-23. The Win32 API calls that roughly correspond to the UNIX calls of Fig. 1-18. Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639 ...
What is an Operating System?
... 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 System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for ...
... 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 System call – request to the operating system to allow user to wait for I/O completion Device-status table contains entry for ...
Chapter 1 Slides
... Process needs resources to accomplish its task CPU, memory, I/O, files (received upon creation and along execution) Initialization data (e.g., a process for presenting the status of a file) Process termination requires reclaim of any reusable resources Single-threaded process has one ...
... Process needs resources to accomplish its task CPU, memory, I/O, files (received upon creation and along execution) Initialization data (e.g., a process for presenting the status of a file) Process termination requires reclaim of any reusable resources Single-threaded process has one ...
CS 519 -- Operating Systems -
... 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 ...
Lecture 1 - inst.eecs.berkeley.edu
... 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 ...
Dealing with Meory Constraints under SAS 6.04 for DOS and Moving to 6.06 under OS/2
... times. Make your many pages of FSEDIT on one data set one FSEDIT session again. Use MENU entries if you wish (Though PROGRAM entries are much more flexible and customizable). Moving to 6.06. Moving to version 6.06 is a difficult process to anyone only familiar with the DOS release. The Display Manag ...
... times. Make your many pages of FSEDIT on one data set one FSEDIT session again. Use MENU entries if you wish (Though PROGRAM entries are much more flexible and customizable). Moving to 6.06. Moving to version 6.06 is a difficult process to anyone only familiar with the DOS release. The Display Manag ...
Operating System
... A time-shared operating system allows the many users to share the computer simultaneously. Since each action or command in a time-shared system tends to be short, only a little CPU time is needed for each user. As the system switches rapidly from one user to the next, each user is given the impressi ...
... A time-shared operating system allows the many users to share the computer simultaneously. Since each action or command in a time-shared system tends to be short, only a little CPU time is needed for each user. As the system switches rapidly from one user to the next, each user is given the impressi ...
the Mach kernel
... All UNIX-specific code has been evicted from the kernel to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system or the simultaneous execution of multiple operating-system interfaces on top of the microkernel. (BSD, DOS, Ma ...
... All UNIX-specific code has been evicted from the kernel to run in user-mode servers. Excluding UNIX-specific code from the kernel allows replacement of BSD with another operating system or the simultaneous execution of multiple operating-system interfaces on top of the microkernel. (BSD, DOS, Ma ...
CS311 - NUS School of Computing
... “The low-level software which schedules tasks, allocates storage, handles the interface to peripheral hardware and presents a default interface to the user when no application program is running.” “The OS may be split into a kernel which is always present and various system programs which use facili ...
... “The low-level software which schedules tasks, allocates storage, handles the interface to peripheral hardware and presents a default interface to the user when no application program is running.” “The OS may be split into a kernel which is always present and various system programs which use facili ...
Standard Operating and Maintenance Procedures
... – Windows 7 OS system files are contained in the Windows directory, which has subdirectories such as System, System32, and SysWOW64. – Macintosh system files are kept in the bin, dev, etc, Library, network,sbin, System, and Volumes directories. – UNIX/Linux system files are in the bin, dev, etc, lib ...
... – Windows 7 OS system files are contained in the Windows directory, which has subdirectories such as System, System32, and SysWOW64. – Macintosh system files are kept in the bin, dev, etc, Library, network,sbin, System, and Volumes directories. – UNIX/Linux system files are in the bin, dev, etc, lib ...
ch19
... 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 the ...
... 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 the ...
ch9
... Disk striping uses a group of disks as one storage unit RAID is arranged into six different levels RAID schemes improve performance and improve the reliability ...
... Disk striping uses a group of disks as one storage unit RAID is arranged into six different levels RAID schemes improve performance and improve the reliability ...
What is an Operating System?
... “The one program running at all times on the computer” is the kernel. Everything else is either a system program (ships with the operating ...
... “The one program running at all times on the computer” is the kernel. Everything else is either a system program (ships with the operating ...