THE WINDOWS OPERATING SYSTEM
... directories to contain subdirectories as well as files. The new release also contained a richer set of commands embedded in the operating system to provide functions that had to be performed by external programs provided as utilities with release 1. Among the capabilities added were several UNIX-lik ...
... directories to contain subdirectories as well as files. The new release also contained a richer set of commands embedded in the operating system to provide functions that had to be performed by external programs provided as utilities with release 1. Among the capabilities added were several UNIX-lik ...
Chapter 2: Operating
... Others provide detailed performance, logging, and debugging information Typically, these programs format and print the output to the terminal or other output devices Some systems implement a registry - used to store and retrieve configuration information ...
... Others provide detailed performance, logging, and debugging information Typically, these programs format and print the output to the terminal or other output devices Some systems implement a registry - used to store and retrieve configuration information ...
Linux Tutorial
... Access rights on directories. r: allows users to list files in the directory; w: means that users may delete files from the directory or move files into it. Never give write permission to others to your home directory or any of its subdirectories. x: means the right to access files in the d ...
... Access rights on directories. r: allows users to list files in the directory; w: means that users may delete files from the directory or move files into it. Never give write permission to others to your home directory or any of its subdirectories. x: means the right to access files in the d ...
an introduction to solaris
... kernel supports an environment in which multiple programs can execute simultaneously. The primary functions of the kernel can be divided into two major categories: managing the hardware by allocating its resources among the programs running on it; and supplying a set of system services for those pro ...
... kernel supports an environment in which multiple programs can execute simultaneously. The primary functions of the kernel can be divided into two major categories: managing the hardware by allocating its resources among the programs running on it; and supplying a set of system services for those pro ...
Lecture 13
... • What if multiple processes have a given file open? • Should they share one control structure or have one each? • In-memory structures typically contain a cursor pointer – Indicating how far into the file data has been read/written ...
... • What if multiple processes have a given file open? • Should they share one control structure or have one each? • In-memory structures typically contain a cursor pointer – Indicating how far into the file data has been read/written ...
Operating-System Structures
... 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 the system from outsiders requires user authentication, ex ...
... 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 the system from outsiders requires user authentication, ex ...
Presentation
... Windows 95/98/Me FAT16 • Two advantages of FAT16 are that, like FAT12, it is a simple file system supported by many small computer operating systems, and it has a low operating system overhead • The disadvantages are that FAT16 become corrupted over time as files are spread among disjointed allocati ...
... Windows 95/98/Me FAT16 • Two advantages of FAT16 are that, like FAT12, it is a simple file system supported by many small computer operating systems, and it has a low operating system overhead • The disadvantages are that FAT16 become corrupted over time as files are spread among disjointed allocati ...
Quick UNIX Tutorial
... the user’s username and password, creates a shell process. • The shell process displays a prompt on the screen and waits. • When the user enters a command, the shell examines it, interprets it and either executes it or calls another program to do so. • After the command is executed, the shell displa ...
... the user’s username and password, creates a shell process. • The shell process displays a prompt on the screen and waits. • When the user enters a command, the shell examines it, interprets it and either executes it or calls another program to do so. • After the command is executed, the shell displa ...
slides
... • CPU scheduling more complex when multiple CPUs are available • Homogeneous processors within a multiprocessor • Asymmetric multiprocessing – only one processor accesses the system data structures, alleviating the need for data sharing • Symmetric multiprocessing (SMP) – each processor is self-sche ...
... • CPU scheduling more complex when multiple CPUs are available • Homogeneous processors within a multiprocessor • Asymmetric multiprocessing – only one processor accesses the system data structures, alleviating the need for data sharing • Symmetric multiprocessing (SMP) – each processor is self-sche ...
File Systems_PPT_ch04
... Understanding File Systems Functions – Provide a hierarchical structure to organize files • A folder (directory) is an organizational structure that contains files and may additionally contain subfolders (subdirectories) under it. • The folder connects names to the files that are stored on the disk ...
... Understanding File Systems Functions – Provide a hierarchical structure to organize files • A folder (directory) is an organizational structure that contains files and may additionally contain subfolders (subdirectories) under it. • The folder connects names to the files that are stored on the disk ...
Operating-System Structures
... Exact type and amount of information vary according to OS and call Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block p ...
... Exact type and amount of information vary according to OS and call Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block p ...
Lecture 3
... the hardware of a single computer into several different execution environments. The operating system creates the illusion of multiple ...
... the hardware of a single computer into several different execution environments. The operating system creates the illusion of multiple ...
Real-time operating system survey
... For small or static real-time systems, data and task dependencies are limited and therefore the task execution time can be estimated prior to execution and the resulting task schedules can be determined off-line. Periodic tasks typically arise from sensor data and control loops, however sporadic tas ...
... For small or static real-time systems, data and task dependencies are limited and therefore the task execution time can be estimated prior to execution and the resulting task schedules can be determined off-line. Periodic tasks typically arise from sensor data and control loops, however sporadic tas ...
Operating System Structure
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation ...
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation ...
Appendix C - Windows 2000
... A process object represents the virtual address space and control information necessary to execute the set of threads associated with a process. Finally, the system uses the profile object to measure the amount of time used by a block of code. C.3.2.1 Threads and Scheduling As do many modern operati ...
... A process object represents the virtual address space and control information necessary to execute the set of threads associated with a process. Finally, the system uses the profile object to measure the amount of time used by a block of code. C.3.2.1 Threads and Scheduling As do many modern operati ...
File System - UC Davis Computer Science
... • Some file systems provide different access methods that specify ways the application will access data sequential access o read bytes one at a time, in order ...
... • Some file systems provide different access methods that specify ways the application will access data sequential access o read bytes one at a time, in order ...
File System
... When reading a file, if a gap in the virtual cluster numbers is found, NTFS just zero-fills that portion of the caller’s buffer ...
... When reading a file, if a gap in the virtual cluster numbers is found, NTFS just zero-fills that portion of the caller’s buffer ...
No Slide Title
... When reading a file, if a gap in the virtual cluster numbers is found, NTFS just zero-fills that portion of the caller’s buffer ...
... When reading a file, if a gap in the virtual cluster numbers is found, NTFS just zero-fills that portion of the caller’s buffer ...
Unit OS 9: Real-Time with Windows
... Microsoft has licensed these materials from David Solomon Expert Seminars, Inc. for distribution to academic organizations solely for use in academic environments (and not for commercial use) ...
... Microsoft has licensed these materials from David Solomon Expert Seminars, Inc. for distribution to academic organizations solely for use in academic environments (and not for commercial use) ...
Scheduling
... Basis for O(1) performance: Scheduler always runs highest priority task. Round robin for multiple equal priority tasks. Priority array finds highest task O(1) operation. Using two arrays allows transitions between epochs by switching active and expired pointers. CSC 660: Advanced Operating Systems ...
... Basis for O(1) performance: Scheduler always runs highest priority task. Round robin for multiple equal priority tasks. Priority array finds highest task O(1) operation. Using two arrays allows transitions between epochs by switching active and expired pointers. CSC 660: Advanced Operating Systems ...
Kernel Modules - Northern Kentucky University
... Basis for O(1) performance: Scheduler always runs highest priority task. Round robin for multiple equal priority tasks. Priority array finds highest task O(1) operation. Using two arrays allows transitions between epochs by switching active and expired pointers. CSC 660: Advanced Operating Systems ...
... Basis for O(1) performance: Scheduler always runs highest priority task. Round robin for multiple equal priority tasks. Priority array finds highest task O(1) operation. Using two arrays allows transitions between epochs by switching active and expired pointers. CSC 660: Advanced Operating Systems ...
Best Practices for Data Sharing in a Grid Distributed
... make solid business decisions. This is true for many SAS customers who look for ways to distribute both their data and or their processing to help them meet ever-shrinking timelines. The performance and success of a solution depends on timely and reliable data access no matter where it resides. Cust ...
... make solid business decisions. This is true for many SAS customers who look for ways to distribute both their data and or their processing to help them meet ever-shrinking timelines. The performance and success of a solution depends on timely and reliable data access no matter where it resides. Cust ...
OS 2200
OS 2200 is the operating system for the Unisys ClearPath Dorado family of mainframe systems. The operating system kernel of OS 2200 is a lineal descendant of Exec 8 for the UNIVAC 1108. Documentation and other information on current and past Unisys systems can be found on the Unisys public support website.See Unisys 2200 Series system architecture for a description of the machine architecture and its relationship to the OS 2200 operating system.