Chapter 1: Introduction What is an Operating System?
... ■ Mainframe Systems ■ Desktop Systems ■ Multiprocessor Systems ■ Distributed Systems ■ Clustered System ■ Real -Time Systems ■ Handheld Systems ■ Computing Environments ...
... ■ Mainframe Systems ■ Desktop Systems ■ Multiprocessor Systems ■ Distributed Systems ■ Clustered System ■ Real -Time Systems ■ Handheld Systems ■ Computing Environments ...
Abstract View of System Components
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
pdf-1 - IFSC-USP
... ■ Mainframe Systems ■ Desktop Systems ■ Multiprocessor Systems ■ Distributed Systems ■ Clustered System ■ Real -Time Systems ■ Handheld Systems ■ Computing Environments ...
... ■ Mainframe Systems ■ Desktop Systems ■ Multiprocessor Systems ■ Distributed Systems ■ Clustered System ■ Real -Time Systems ■ Handheld Systems ■ Computing Environments ...
Operating Systems CSE 411 CPU Management Sept. 20 2006 - Lecture 7
... User Threads • Thread management done by user-level threads library • OS doesn’t know about the existence of these threads • Three primary thread libraries: – POSIX Pthreads – Win32 threads – Java threads ...
... User Threads • Thread management done by user-level threads library • OS doesn’t know about the existence of these threads • Three primary thread libraries: – POSIX Pthreads – Win32 threads – Java threads ...
ch01-Introduction
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
Chapter 1: Introduction
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
Network operating system comparison
... performance when the only requirements are file and print services. They often are less stable and robust when supporting other functions. When multifunction servers are required, layering NOS functions on a general-purpose operating system becomes the best choice. Most NOSs reside in either the sec ...
... performance when the only requirements are file and print services. They often are less stable and robust when supporting other functions. When multifunction servers are required, layering NOS functions on a general-purpose operating system becomes the best choice. Most NOSs reside in either the sec ...
CIS 721 - Lecture 1
... The UNIX Operating System • UNIX (sometimes spelled “Unix”) is an operating system that originated at Bell Labs in 1969. Ken Thompson and Dennis Ritchie are considered the inventors of UNIX. • UNIX has evolved as a kind of large freeware product, with many extensions and new ideas provided in a var ...
... The UNIX Operating System • UNIX (sometimes spelled “Unix”) is an operating system that originated at Bell Labs in 1969. Ken Thompson and Dennis Ritchie are considered the inventors of UNIX. • UNIX has evolved as a kind of large freeware product, with many extensions and new ideas provided in a var ...
Towards Protecting Sensitive Files in a Compromised System
... state. For example, one can thwart many viruses from infecting system executables by preventing modification on these files. The trails of many intrusions can also be discovered from the system logs, if the log file is protected from being scrubbed. However, protecting sensitive files in a compromis ...
... state. For example, one can thwart many viruses from infecting system executables by preventing modification on these files. The trails of many intrusions can also be discovered from the system logs, if the log file is protected from being scrubbed. However, protecting sensitive files in a compromis ...
Chapter 3 Process Description and Control
... • Memory tables are used to keep track of both main and secondary memory. • Must include this information: – Allocation of main memory to processes – Allocation of secondary memory to processes – Protection attributes of blocks of main or virtual memory – Information needed to manage virtual memory ...
... • Memory tables are used to keep track of both main and secondary memory. • Must include this information: – Allocation of main memory to processes – Allocation of secondary memory to processes – Protection attributes of blocks of main or virtual memory – Information needed to manage virtual memory ...
Chapter3
... (LIFO) system stacks associated with it. A stack is used to store parameters and calling addresses for procedure and system calls. The stack pointer points to the top of the stack. ...
... (LIFO) system stacks associated with it. A stack is used to store parameters and calling addresses for procedure and system calls. The stack pointer points to the top of the stack. ...
Document
... wants k instances of resource type Rj 1. If Requesti Needi, go to step 2. Otherwise, raise error condition, since process has exceeded its maximum claim 2. If Requesti Available, go to step 3. Otherwise Pi must wait, since resources are not available 3. Pretend to allocate requested resources to ...
... wants k instances of resource type Rj 1. If Requesti Needi, go to step 2. Otherwise, raise error condition, since process has exceeded its maximum claim 2. If Requesti Available, go to step 3. Otherwise Pi must wait, since resources are not available 3. Pretend to allocate requested resources to ...
Operation Systems
... Process Manager: • Next program to be executed? • Time to be given to each program? Memory manager: • Best use of the memory to run as many programs as possible I/O Device (e.g.printer) Manager: • Which program should use a particular I/O device? Network manager: • which computer should execute a pa ...
... Process Manager: • Next program to be executed? • Time to be given to each program? Memory manager: • Best use of the memory to run as many programs as possible I/O Device (e.g.printer) Manager: • Which program should use a particular I/O device? Network manager: • which computer should execute a pa ...
Najwa Knefati CH3 summary
... containing the exec () system call) and starts its execution. The parent can then create more children; or, if it has nothing else to do while the child runs, it can issue a wait () system call to move itself off the ready queue until the termination of the child. Because the call to exec () ove ...
... containing the exec () system call) and starts its execution. The parent can then create more children; or, if it has nothing else to do while the child runs, it can issue a wait () system call to move itself off the ready queue until the termination of the child. Because the call to exec () ove ...
Machine and Operating System Organization
... Relieves the processor responsibility for the exchange Transfers a block of data directly to or from memory An interrupt is sent when the transfer is complete Processor continues with other work ...
... Relieves the processor responsibility for the exchange Transfers a block of data directly to or from memory An interrupt is sent when the transfer is complete Processor continues with other work ...
ENPM 808B: Secure Operating Systems
... and security. The course consists of reading and discussing research papers and includes a course project. Please note: This course assumes knowledge of C programming and a previous operating systems class or knowledge in various issues such as process management, process synchronization, the critic ...
... and security. The course consists of reading and discussing research papers and includes a course project. Please note: This course assumes knowledge of C programming and a previous operating systems class or knowledge in various issues such as process management, process synchronization, the critic ...
Chapter 6: Operating Systems: The Genie in the Computer
... of the operating system is required. • Compatibility problems may arise if an operating system is updated. One of two things might happen after updating: 1. The operating system may be compatible with older software so that more users will purchase it. 2. The operating system was optimized with the ...
... of the operating system is required. • Compatibility problems may arise if an operating system is updated. One of two things might happen after updating: 1. The operating system may be compatible with older software so that more users will purchase it. 2. The operating system was optimized with the ...
LEC1-Intro
... System Calls – UNIX Mount System ° UNIX Mount System: to integrate removable media into a single integrated file systems, without having to worry about which device a file is on, and/or to merge two file systems into one ...
... System Calls – UNIX Mount System ° UNIX Mount System: to integrate removable media into a single integrated file systems, without having to worry about which device a file is on, and/or to merge two file systems into one ...
Chapter 7 Operating Systems and Utility Programs
... or more processors running programs at same time ...
... or more processors running programs at same time ...
Understanding Computers, 10/e, Chapter 6
... Linux is a version of Unix originally created in 1991. ...
... Linux is a version of Unix originally created in 1991. ...
CS430 – Operating Systems 07/06/2006 – 08/27/2006 – Fort Collins Facilitator Information
... Question 2: Discuss the interrupt architecture and Direct Memory Access (DMA). Explain how these techniques work. ...
... Question 2: Discuss the interrupt architecture and Direct Memory Access (DMA). Explain how these techniques work. ...
File System - UC Davis Computer Science
... open directory “two”, search for “three”, get loc. of “three” open file “three” (of course, permissions are checked at each step) ...
... open directory “two”, search for “three”, get loc. of “three” open file “three” (of course, permissions are checked at each step) ...
Operating Systems
... Must be done in groups of 2 or 3 Can change groups from Assignment 1 (if you wish) Must have a blog on Blackboard Lecture 14: Operating Systems ...
... Must be done in groups of 2 or 3 Can change groups from Assignment 1 (if you wish) Must have a blog on Blackboard Lecture 14: Operating Systems ...
1 Modeling an Operating System Kernel
... it and triggers driver processes C LOCK D RIVER and D E Z OMBIFIER, in that order. C LOCK D RIVER updates the various time counters related to process suspension and swapping, readies (or “alarms”) the processes that are to be resumed and wakes up the S WAPPER process. D E Z OMBIFIER kills all zombi ...
... it and triggers driver processes C LOCK D RIVER and D E Z OMBIFIER, in that order. C LOCK D RIVER updates the various time counters related to process suspension and swapping, readies (or “alarms”) the processes that are to be resumed and wakes up the S WAPPER process. D E Z OMBIFIER kills all zombi ...
ppt
... by Linus Torvalds, with the major design goal of UNIX compatibility, released as open source Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet It has been designed to run efficiently and reliably on ...
... by Linus Torvalds, with the major design goal of UNIX compatibility, released as open source Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet It has been designed to run efficiently and reliably on ...