What is an Operating System?
... local memory; processors communicate with one another through various communications lines, such as highspeed buses or telephone lines Advantages of distributed systems ...
... local memory; processors communicate with one another through various communications lines, such as highspeed buses or telephone lines Advantages of distributed systems ...
What is an Operating System?
... local memory; processors communicate with one another through various communications lines, such as highspeed buses or telephone lines Advantages of distributed systems ...
... local memory; processors communicate with one another through various communications lines, such as highspeed buses or telephone lines Advantages of distributed systems ...
Chapter 1: Introduction What is an Operating System?
... ✦ Each processor runs and identical copy of the operating system. ✦ Many processes can run at once without performance deterioration. ✦ Most modern operating systems support SMP ■ Asymmetric multiprocessing ✦ Each processor is assigned a specific task; master processor schedules and allocated work t ...
... ✦ Each processor runs and identical copy of the operating system. ✦ Many processes can run at once without performance deterioration. ✦ Most modern operating systems support SMP ■ Asymmetric multiprocessing ✦ Each processor is assigned a specific task; master processor schedules and allocated work t ...
Abstract View of System Components
... Each processor runs and identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work t ...
... Each processor runs and identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work t ...
pdf-1 - IFSC-USP
... ✦ Each processor runs and identical copy of the operating system. ✦ Many processes can run at once without performance deterioration. ✦ Most modern operating systems support SMP ■ Asymmetric multiprocessing ✦ Each processor is assigned a specific task; master processor schedules and allocated work t ...
... ✦ Each processor runs and identical copy of the operating system. ✦ Many processes can run at once without performance deterioration. ✦ Most modern operating systems support SMP ■ Asymmetric multiprocessing ✦ Each processor is assigned a specific task; master processor schedules and allocated work t ...
資工系網媒所NEWS實驗室
... Single user cannot keep CPU and I/O devices busy at all times Multiprogramming organizes jobs (code and data) so CPU always has one to execute A subset of total jobs in system is kept in memory One job selected and run via job scheduling When it has to wait (for I/O for example), OS switches to anot ...
... Single user cannot keep CPU and I/O devices busy at all times Multiprogramming organizes jobs (code and data) so CPU always has one to execute A subset of total jobs in system is kept in memory One job selected and run via job scheduling When it has to wait (for I/O for example), OS switches to anot ...
Book Title - St. Francis Xavier University
... shelve, you take 10 books on the same topic. Then, you find a table with a chair, put the 10 books on the table, sit there and start reading one of the books ...
... shelve, you take 10 books on the same topic. Then, you find a table with a chair, put the 10 books on the table, sit there and start reading one of the books ...
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 ...
Files and File Systems • files: persistent, named data objects – data
... • A directory maps file names (strings) to i-numbers – an i-number is a unique (within a file system) identifier for a file or directory – given an i-number, the file system can file the data and meta-data the file • Directories provide a way for applications to group related files • Since directori ...
... • A directory maps file names (strings) to i-numbers – an i-number is a unique (within a file system) identifier for a file or directory – given an i-number, the file system can file the data and meta-data the file • Directories provide a way for applications to group related files • Since directori ...
The Sprite Network Operating System
... 2.2. Shared Address Spaces The early versions of UNIX did not permit memory to be shared between user processes, except for read-only code. Each process had private data and stack segments, as shown in Figure 1. Since then, extensions to allow read-write memory sharing have been implemented or propo ...
... 2.2. Shared Address Spaces The early versions of UNIX did not permit memory to be shared between user processes, except for read-only code. Each process had private data and stack segments, as shown in Figure 1. Since then, extensions to allow read-write memory sharing have been implemented or propo ...
The concept of operating system
... Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register (e.g., Linux and Solaris) Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or le ...
... Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register (e.g., Linux and Solaris) Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or le ...
What is an Operating System?
... mode. The operating system is then loaded and starts user applications in user mode. Whenever a trap or interrupt occurs, the hardware switches from user mode to kernel mode (that is, changes the state of the mode bit to 0). Thus, whenever the operating system gains control of the computer, it is in ...
... mode. The operating system is then loaded and starts user applications in user mode. Whenever a trap or interrupt occurs, the hardware switches from user mode to kernel mode (that is, changes the state of the mode bit to 0). Thus, whenever the operating system gains control of the computer, it is in ...
An all-in-one monolithic kernel.
... Q15: What is priority inheritance? • The solution to priority inversion, where a process using a resource has its priority temporarily increased to that of the highest priority process waiting for the resource. • The solution to priority inversion, where all processes waiting on a resource temporar ...
... Q15: What is priority inheritance? • The solution to priority inversion, where a process using a resource has its priority temporarily increased to that of the highest priority process waiting for the resource. • The solution to priority inversion, where all processes waiting on a resource temporar ...
Chapter 6: Operating Systems: The Genie in the Computer
... The operating system: A collection of programs that manages and controls applications and other software, and coordinates the various hardware components to perform tasks requested by the user. • Allows use of (partial list!) – the keyboard – the mouse – printing to a printer of your choice – viewin ...
... The operating system: A collection of programs that manages and controls applications and other software, and coordinates the various hardware components to perform tasks requested by the user. • Allows use of (partial list!) – the keyboard – the mouse – printing to a printer of your choice – viewin ...
Computer Network and Infrastructure
... Example when input arrives from communication line, it needs to be absorbed quickly to make room for more input ...
... Example when input arrives from communication line, it needs to be absorbed quickly to make room for more input ...
OS Structures and Java
... Recycle Bin, while Linux rm delete them instantly. Windows task manager allows us to kill processes with their program names, while Linux uses IDs to kill specific processes. Windows starts an appropriate application for a file double-clicked, while Linux needs a specific application to be typed fro ...
... Recycle Bin, while Linux rm delete them instantly. Windows task manager allows us to kill processes with their program names, while Linux uses IDs to kill specific processes. Windows starts an appropriate application for a file double-clicked, while Linux needs a specific application to be typed fro ...
Course Intro
... An operating system manages all peripheral devices, network interfaces, other program resources and users of such. In short, an OS is a complex program system. The study of operating systems has gained importance with the advancements made in computer organization and programming systems. This cours ...
... An operating system manages all peripheral devices, network interfaces, other program resources and users of such. In short, an OS is a complex program system. The study of operating systems has gained importance with the advancements made in computer organization and programming systems. This cours ...
OS Overview
... Hello everybody out there using minix - I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since april, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles ...
... Hello everybody out there using minix - I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since april, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles ...
Chapter 2: Operating
... [Int] System Calls Provide programming interface to the services made available by the OS Typically written in a high-level language (C or C++) ...
... [Int] System Calls Provide programming interface to the services made available by the OS Typically written in a high-level language (C or C++) ...
OSreviewS2004
... • Long-term scheduler (or job scheduler) – selects which processes should be brought into the ready queue. • Short-term scheduler (or CPU scheduler) – selects which process should be executed next and allocates CPU. • Midterm scheduler ...
... • Long-term scheduler (or job scheduler) – selects which processes should be brought into the ready queue. • Short-term scheduler (or CPU scheduler) – selects which process should be executed next and allocates CPU. • Midterm scheduler ...