M.C.A.(Sem - V) Distributed Computing
... main idea of workstations serving as personal computers, because if remote processes are allowed to execute simultaneously with the logged on user’s own processes, the logged-on user does not get his of her guaranteed response. 2. The second approach is to kill the remote process. The main drawbacks ...
... main idea of workstations serving as personal computers, because if remote processes are allowed to execute simultaneously with the logged on user’s own processes, the logged-on user does not get his of her guaranteed response. 2. The second approach is to kill the remote process. The main drawbacks ...
November 10 Lecture Slides
... Location – pointer to file location on device" Size – current file size" Protection – controls who can do reading, writing, executing" Time, date, and user identification – data for protection, security, and ...
... Location – pointer to file location on device" Size – current file size" Protection – controls who can do reading, writing, executing" Time, date, and user identification – data for protection, security, and ...
OPERATING- SYSTEM CONCEPTS with Java
... Answer: When there are few other users, the task is large, and the hardware is fast, timesharing makes sense. The full power of the system can be brought to bear on the user’s problem. The problem can be solved faster than on a personal computer. Another case occurs when lots of other users need res ...
... Answer: When there are few other users, the task is large, and the hardware is fast, timesharing makes sense. The full power of the system can be brought to bear on the user’s problem. The problem can be solved faster than on a personal computer. Another case occurs when lots of other users need res ...
ADAPTING BASE STATION OPERABILITY SOFTWARE INTO LINUX AND SYMMETRIC MULTIPROCESSOR ARCHITECTURE
... Scheduling is the practice of deciding how to commit resources between different processes and the way processes are assigned to run on the available Central Processing Units (CPUs). Scheduling is very important for BTS O&M SW. The software requires a correct-order execution of its several processes ...
... Scheduling is the practice of deciding how to commit resources between different processes and the way processes are assigned to run on the available Central Processing Units (CPUs). Scheduling is very important for BTS O&M SW. The software requires a correct-order execution of its several processes ...
introduction
... for the printer on the disk. When one program is finished, the operating system can then copy its output from the disk file where it has been stored for the printer, while at the same time the other program can continue generating more output, oblivious to the fact that the output is not really goin ...
... for the printer on the disk. When one program is finished, the operating system can then copy its output from the disk file where it has been stored for the printer, while at the same time the other program can continue generating more output, oblivious to the fact that the output is not really goin ...
Lecture Notes- Operating Systems
... Memory Management: Swapping, contiguous memory allocation, segmentation, paging, structure of the page table. Virtual memory: demand paging, page-replacement, Allocation of frames, Thrashing, MemoryMapped Files, Allocating Kernel Memory Deadlocks: System Model, deadlock characterization, Methods of ...
... Memory Management: Swapping, contiguous memory allocation, segmentation, paging, structure of the page table. Virtual memory: demand paging, page-replacement, Allocation of frames, Thrashing, MemoryMapped Files, Allocating Kernel Memory Deadlocks: System Model, deadlock characterization, Methods of ...
9. File Systems and I/O Management
... (to be more precise) a file from a directory simply amounts to deleting the directory entry that points to the inode, and need not always result in the file being scrubbed from the disk. When multiple hard links exist to a file/inode from multiple directories, unlinking a file from one of the direct ...
... (to be more precise) a file from a directory simply amounts to deleting the directory entry that points to the inode, and need not always result in the file being scrubbed from the disk. When multiple hard links exist to a file/inode from multiple directories, unlinking a file from one of the direct ...
... This includes long-term storage, the central processing unit (CPU), short-term memory and the input and output devices. When an application needs one of these resources, the kernel makes the resource available and completes the request. This handling of resources allows the operating systems to be b ...
ppt
... 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 ...
Chapter 2: Operating
... 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 ...
... 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 Services
... Internal structure of different Operating Systems can vary widely Start the design by defining goals and specifications Affected by choice of hardware, type of system User goals and System goals User goals – operating system should be convenient to use, easy to learn, reliable, safe, and f ...
... Internal structure of different Operating Systems can vary widely Start the design by defining goals and specifications Affected by choice of hardware, type of system User goals and System goals User goals – operating system should be convenient to use, easy to learn, reliable, safe, and f ...
Scheduling - Ubiquitous Computing Lab
... scheduled until done (including I/O) » Now, means keep CPU until thread blocks ...
... scheduled until done (including I/O) » Now, means keep CPU until thread blocks ...
File Systems
... ifree Algorithm: increment file system free inode count; if (SB is locked) return; lock SB; if (inode list is full) { if (inode no. < "remembered inode") update "remembered inode"; ...
... ifree Algorithm: increment file system free inode count; if (SB is locked) return; lock SB; if (inode list is full) { if (inode no. < "remembered inode") update "remembered inode"; ...
operating system design
... Since multiple users can be logged into a computer at the same time, the operating system needs to provide mechanisms to keep them separated. One user may not interfere with another. The process concept is widely used to group resources together for protection purposes. Files and other data structur ...
... Since multiple users can be logged into a computer at the same time, the operating system needs to provide mechanisms to keep them separated. One user may not interfere with another. The process concept is widely used to group resources together for protection purposes. Files and other data structur ...
Operating System Structure
... Although MS-DOS has some structure, its interfaces and levels of functionality are not well separated ...
... Although MS-DOS has some structure, its interfaces and levels of functionality are not well separated ...
Operating Systems (Notes to prepare in 1 night before Exam)
... than one user. Since all the files are in same folder, they must have unique name. 2. Two-Level Directory:- In the two-level directory system, the system maintains a master block that has one entry for each user. This master block contains the addresses of the directories of the users. The problem w ...
... than one user. Since all the files are in same folder, they must have unique name. 2. Two-Level Directory:- In the two-level directory system, the system maintains a master block that has one entry for each user. This master block contains the addresses of the directories of the users. The problem w ...
P 1 - Dave Reed
... Linux scheduler is preemptive, priority-based 2 priority ranges: real-time (0-99) & nice (100-140) unlike Solaris & XP, direct relationship between priority and quantum size highest priority (200 ms) lowest priority (10 ms) real-time tasks are assigned fixed priorities nice tasks have dyn ...
... Linux scheduler is preemptive, priority-based 2 priority ranges: real-time (0-99) & nice (100-140) unlike Solaris & XP, direct relationship between priority and quantum size highest priority (200 ms) lowest priority (10 ms) real-time tasks are assigned fixed priorities nice tasks have dyn ...
ppt - Dave Reed
... Linux scheduler is preemptive, priority-based 2 priority ranges: real-time (0-99) & nice (100-140) unlike Solaris & XP, direct relationship between priority and quantum size highest priority (200 ms) lowest priority (10 ms) real-time tasks are assigned fixed priorities nice tasks have dyn ...
... Linux scheduler is preemptive, priority-based 2 priority ranges: real-time (0-99) & nice (100-140) unlike Solaris & XP, direct relationship between priority and quantum size highest priority (200 ms) lowest priority (10 ms) real-time tasks are assigned fixed priorities nice tasks have dyn ...
Chapter 4
... • The goals of process scheduling policies in singlecore CPUs • Up to six different process scheduling algorithms • The role of internal interrupts and the tasks performed by the interrupt handler ...
... • The goals of process scheduling policies in singlecore CPUs • Up to six different process scheduling algorithms • The role of internal interrupts and the tasks performed by the interrupt handler ...
lecture1423726024
... buffer for reading from input devices and for storing output data until the output devices accept them. It is also use for processing data at remote sides. The remote processing is done and its own speed with no CPU intervention. Spooling overlaps the input, output one job with computation of other ...
... buffer for reading from input devices and for storing output data until the output devices accept them. It is also use for processing data at remote sides. The remote processing is done and its own speed with no CPU intervention. Spooling overlaps the input, output one job with computation of other ...
lecture1422914790
... buffer for reading from input devices and for storing output data until the output devices accept them. It is also use for processing data at remote sides. The remote processing is done and its own speed with no CPU intervention. Spooling overlaps the input, output one job with computation of other ...
... buffer for reading from input devices and for storing output data until the output devices accept them. It is also use for processing data at remote sides. The remote processing is done and its own speed with no CPU intervention. Spooling overlaps the input, output one job with computation of other ...
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.