The Linux System 21.2 Silberschatz, Galvin and Gagne ©2009
... The environment-variable mechanism provides a customization of the operating system that can be set on a per-process basis, rather than being configured for the system as a whole. ...
... The environment-variable mechanism provides a customization of the operating system that can be set on a per-process basis, rather than being configured for the system as a whole. ...
Shared Memory IPC
... Also introduced in System V Release 3 Allows two or more processes to share some memory segments With some control over read/write permissions Often used to implement threads packages for UNIX ...
... Also introduced in System V Release 3 Allows two or more processes to share some memory segments With some control over read/write permissions Often used to implement threads packages for UNIX ...
Difference Between Paging and segmentation
... mail however it is a better idea to allow other customers proceed and get served in the mean time. I think this example (to some extent) is very similar in concept to multiprogramming model where programs are like customers and CPU is like the post office assistant. Assuming one assistant (single pr ...
... mail however it is a better idea to allow other customers proceed and get served in the mean time. I think this example (to some extent) is very similar in concept to multiprogramming model where programs are like customers and CPU is like the post office assistant. Assuming one assistant (single pr ...
Four Components of a Computer System
... Single user cannot keep CPU and I/O devices busy at all times" ...
... Single user cannot keep CPU and I/O devices busy at all times" ...
Midterm1-su13
... e) Where was the first operating system with a graphical user interface developed? ...
... e) Where was the first operating system with a graphical user interface developed? ...
Operating system
... multiple applications and other processes to run concurrently, using either cooperative multitasking or pre-emptive multitasking. Memory paging. Windows 95/98/NT uses a demand-paged virtual memory system, which is based on a flat, linear address space accessed using 32-bit addresses. The system allo ...
... multiple applications and other processes to run concurrently, using either cooperative multitasking or pre-emptive multitasking. Memory paging. Windows 95/98/NT uses a demand-paged virtual memory system, which is based on a flat, linear address space accessed using 32-bit addresses. The system allo ...
Factored Operating Systems (fos)
... Adding locks into an operating system is time consuming and error prone. Adding locks can be error prone for several reasons. First, when trying to implement a fine grain lock where coarse grain locking previously existed, it is common to forget that a piece of data needs to be protected by a lock. ...
... Adding locks into an operating system is time consuming and error prone. Adding locks can be error prone for several reasons. First, when trying to implement a fine grain lock where coarse grain locking previously existed, it is common to forget that a piece of data needs to be protected by a lock. ...
2.01 - SEJONG
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program Interface ...
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program Interface ...
PPTX - Duke Computer Science
... additional cache pressure caused by OS code and data supporting hardware protection. In addition, TLB access is on the critical path of many processor designs [2, 15] and so might affect both processor clock speed and pipeline depth. Hardware protection increases the cost of calls into the kernel an ...
... additional cache pressure caused by OS code and data supporting hardware protection. In addition, TLB access is on the critical path of many processor designs [2, 15] and so might affect both processor clock speed and pipeline depth. Hardware protection increases the cost of calls into the kernel an ...
communication in distributed system and remote procedure call
... make it easier to deal with numerous levels and issues involved in communication, the international Standards Organization has developed a reference model, that clearly identifies the various level involved, gives them standard names and points out which level should do which job. This model is call ...
... make it easier to deal with numerous levels and issues involved in communication, the international Standards Organization has developed a reference model, that clearly identifies the various level involved, gives them standard names and points out which level should do which job. This model is call ...
Lecture 1 - Operating System Overview
... Systems generally first distinguish among users, to determine who can do whatever User identities (user IDs, security IDs) include name and associated number, one per user User ID then associated with all files, processes of that user to ...
... Systems generally first distinguish among users, to determine who can do whatever User identities (user IDs, security IDs) include name and associated number, one per user User ID then associated with all files, processes of that user to ...
Operating Systems
... • CPU (decides how to share CPU among processes) •Memory (decides how to share memory) •Disk (decides how to share disk) ...
... • CPU (decides how to share CPU among processes) •Memory (decides how to share memory) •Disk (decides how to share disk) ...
MSDOS-by-Andrew-Vogan-2002
... • In 1981, Microsoft purchased 86-DOS, and renamed it as “MS-DOS.” From the start, MS-DOS was intended for IBM’s personal computers, designed for the Intel 8086/8088 CPUs. • MS-DOS shipped with the original IBM PC in 1981, and quickly grew to be the OS of choice for both IBM PC’s and “clones.” • “DO ...
... • In 1981, Microsoft purchased 86-DOS, and renamed it as “MS-DOS.” From the start, MS-DOS was intended for IBM’s personal computers, designed for the Intel 8086/8088 CPUs. • MS-DOS shipped with the original IBM PC in 1981, and quickly grew to be the OS of choice for both IBM PC’s and “clones.” • “DO ...
File Management
... operating system files needed to boot your computer without accessing the hard disk A recovery disk (sometimes referred to as a recovery CD) is a bootable CD, DVD, or other media that contains a complete copy of your computer’s hard disk as it existed when the computer was new ...
... operating system files needed to boot your computer without accessing the hard disk A recovery disk (sometimes referred to as a recovery CD) is a bootable CD, DVD, or other media that contains a complete copy of your computer’s hard disk as it existed when the computer was new ...
Section A: Operating Systems Basics
... experience. Discuss the ways in which the myriad options available to a user of a given application are presented via these mechanisms, and discuss how the user is, to a large degree, allowed to work the way he or she wants to, because of the many different ways that exist to perform a function. ...
... experience. Discuss the ways in which the myriad options available to a user of a given application are presented via these mechanisms, and discuss how the user is, to a large degree, allowed to work the way he or she wants to, because of the many different ways that exist to perform a function. ...
Operating Systems (G53OPS) - Examination Question 1 Operating
... The processes to be run are held in a queue and the scheduler takes the first job off the front of the queue and assigns it to the CPU (so far the same as FCFS). In addition, there is a unit of time defined (called a quantum). Once the process has used up a quantum the process is preempted and a con ...
... The processes to be run are held in a queue and the scheduler takes the first job off the front of the queue and assigns it to the CPU (so far the same as FCFS). In addition, there is a unit of time defined (called a quantum). Once the process has used up a quantum the process is preempted and a con ...
2000 - 2001
... The processes to be run are held in a queue and the scheduler takes the first job off the front of the queue and assigns it to the CPU (so far the same as FCFS). In addition, there is a unit of time defined (called a quantum). Once the process has used up a quantum the process is preempted and a con ...
... The processes to be run are held in a queue and the scheduler takes the first job off the front of the queue and assigns it to the CPU (so far the same as FCFS). In addition, there is a unit of time defined (called a quantum). Once the process has used up a quantum the process is preempted and a con ...
9781439079201_PPT_ch14
... Design Goals (cont'd.) • BIOS (Basic Input/Output System) – Direct interface with I/O devices – Contains device drivers • Controls data flow to and from each device (except disk drives) ...
... Design Goals (cont'd.) • BIOS (Basic Input/Output System) – Direct interface with I/O devices – Contains device drivers • Controls data flow to and from each device (except disk drives) ...
AppGuard - UTSA CS
... of the application and the guest kernel. This is achieved by utilizing hardware assisted virtualization support for memory virtualization instead of repetitively encrypting and decrypting the pages.. Any access to the application address space from the guest kernel will be intercepted and handled by ...
... of the application and the guest kernel. This is achieved by utilizing hardware assisted virtualization support for memory virtualization instead of repetitively encrypting and decrypting the pages.. Any access to the application address space from the guest kernel will be intercepted and handled by ...
CuriOS: Improving Reliability through Operating System
... Recovery from a microkernel server failure is typically attempted by restarting it. The intuition behind this approach is that reinitializing data structures from scratch by restarting a server usually fixes a transient fault. This is similar to microrebooting [10]. In Minix3 [25], for example, serve ...
... Recovery from a microkernel server failure is typically attempted by restarting it. The intuition behind this approach is that reinitializing data structures from scratch by restarting a server usually fixes a transient fault. This is similar to microrebooting [10]. In Minix3 [25], for example, serve ...
ENPM 808B: Secure Operating Systems
... applications and on which security-minded professionals rely, whether they are monitoring activity on a computer, testing applications for security, or determining how malicious code affected their network. This course covers advanced topics in operating systems including process management and comm ...
... applications and on which security-minded professionals rely, whether they are monitoring activity on a computer, testing applications for security, or determining how malicious code affected their network. This course covers advanced topics in operating systems including process management and comm ...
Process Control
... z a) Is it possible that you would to allow a process to wait on more than one event at the same time? Provide an example. z b) In that case, how you modify the queuing structure of the figure to support this new feature? ...
... z a) Is it possible that you would to allow a process to wait on more than one event at the same time? Provide an example. z b) In that case, how you modify the queuing structure of the figure to support this new feature? ...