Modes of Processing - Bangor Grammar School
... Choice of processing mode • Many applications use a combination of batch and interactive processing. Choosing between modes depends on: – Does information obtained from the system need to be up-to-date at all times? – The scale of the operation - Batch systems well suited to very high volumes of da ...
... Choice of processing mode • Many applications use a combination of batch and interactive processing. Choosing between modes depends on: – Does information obtained from the system need to be up-to-date at all times? – The scale of the operation - Batch systems well suited to very high volumes of da ...
Lecture 1 - Department of Computer Science
... • For operating systems that have networking capability there is a fifth manager, the Network Manager, added to the model • The Network Manager provides the facilities for users to share resources while controlling user access to them • These resources include ...
... • For operating systems that have networking capability there is a fifth manager, the Network Manager, added to the model • The Network Manager provides the facilities for users to share resources while controlling user access to them • These resources include ...
Operating Systems Review
... What is a shell? A program A command interpreter Interface between user and computer An interactive interface A programming language, a shell program is called a shell script ...
... What is a shell? A program A command interpreter Interface between user and computer An interactive interface A programming language, a shell program is called a shell script ...
Operating Systems – Processes
... Program counter CPU registers CPU scheduling information (e.g., priority, scheduling queue information) • Memory management information (e.g., base and limit registers) • Accounting information (e.g., time) • I/O status information ECE 344 Operating Systems ...
... Program counter CPU registers CPU scheduling information (e.g., priority, scheduling queue information) • Memory management information (e.g., base and limit registers) • Accounting information (e.g., time) • I/O status information ECE 344 Operating Systems ...
lec01
... Approached Bill Gates to see if he can build one Gates approached Seattle computer products, bought 86DOS and created MS-DOS Goal: finish quickly and run existing CP/M software OS becomes subroutine library and command executive ...
... Approached Bill Gates to see if he can build one Gates approached Seattle computer products, bought 86DOS and created MS-DOS Goal: finish quickly and run existing CP/M software OS becomes subroutine library and command executive ...
My Problems: 1. Suppose that it is time for the operating system to
... Answer: Ready state means less swapping, also fairer in that there will be no starvation. Ready suspend means that the process needs to swap (take memory away from) another process (in the ready Q?) and thus is more time consuming. It also may lead to starvation. It does guarantee that the highest p ...
... Answer: Ready state means less swapping, also fairer in that there will be no starvation. Ready suspend means that the process needs to swap (take memory away from) another process (in the ready Q?) and thus is more time consuming. It also may lead to starvation. It does guarantee that the highest p ...
IPC
... • The pipe() system call gives parent-child processes a way to communicate with each other. • It is called as follows: int pipe(int fd[2]); • In other words, you pass it an array of two integers. It fills in that array with two file descriptors that can talk to each other. Anything that is written ...
... • The pipe() system call gives parent-child processes a way to communicate with each other. • It is called as follows: int pipe(int fd[2]); • In other words, you pass it an array of two integers. It fills in that array with two file descriptors that can talk to each other. Anything that is written ...
What is Batch Processing Operating System?
... contention that can be found in a multiprocessor operating system: Locking system: In order to provide safe access to the resources shared among multiple processors, they need to be protected by locking scheme. The purpose of a locking is to serialize accesses to the protected resource by multiple p ...
... contention that can be found in a multiprocessor operating system: Locking system: In order to provide safe access to the resources shared among multiple processors, they need to be protected by locking scheme. The purpose of a locking is to serialize accesses to the protected resource by multiple p ...
Chapter 1
... systems hides the user the details of underlying hardware for the I/O. All the user sees is that the I/O has been performed without any details. So the operating system by providing I/O makes it convenient for the users to run programs. For reasons of efficiency and protection, users cannot control ...
... systems hides the user the details of underlying hardware for the I/O. All the user sees is that the I/O has been performed without any details. So the operating system by providing I/O makes it convenient for the users to run programs. For reasons of efficiency and protection, users cannot control ...
Best-Effort Multimedia Networking Outline
... infinite memory and CPU. OS as government: protecting users from each other, allocating resources efficiently and fairly, and providing secure and safe communication OS as complex system: keeping OS design and implementation as simple as possible is the key to getting the OS to work ...
... infinite memory and CPU. OS as government: protecting users from each other, allocating resources efficiently and fairly, and providing secure and safe communication OS as complex system: keeping OS design and implementation as simple as possible is the key to getting the OS to work ...
CS3161 Operating System Principles
... (1) Client-server systems – centralised system provides services (computing requests, filing services) to client systems (limited computation ...
... (1) Client-server systems – centralised system provides services (computing requests, filing services) to client systems (limited computation ...
Answer the following questions clearly but concisely. What is multiprogramming? 1.
... 34. It has been observed that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also doubled. Suppose that a normal instruction takes 1 mic ...
... 34. It has been observed that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also doubled. Suppose that a normal instruction takes 1 mic ...
3.basic hardware elements
... I/O SYSTEM MANAGEMENT The I/O subsystem consists of A general device driver interface Drivers for specific hardware devices ...
... I/O SYSTEM MANAGEMENT The I/O subsystem consists of A general device driver interface Drivers for specific hardware devices ...
COS 318: Midterm Exam (October 23, 2012) (80 Minutes) Name:
... choose your answer. Without the reasoning, you will not receive any points. a. (1 point) Intel Pentium processors have special instructions such as SSE for multimedia processing. These instructions have their own registers. Are the registers for such instructions part of the context of a process? Ye ...
... choose your answer. Without the reasoning, you will not receive any points. a. (1 point) Intel Pentium processors have special instructions such as SSE for multimedia processing. These instructions have their own registers. Are the registers for such instructions part of the context of a process? Ye ...
Introduction
... space. • Having data belonging to two independent processes in the same page is called false sharing. – If a page contains data of two independent processes on different processors, the operating system may need to repeatedly transfer the page between those two ...
... space. • Having data belonging to two independent processes in the same page is called false sharing. – If a page contains data of two independent processes on different processors, the operating system may need to repeatedly transfer the page between those two ...
continued…
... ESCD (extended system configuration data) Plug and Play BIOS: creates a list of all things you have done manually to the configuration the PnP doesn’t do Last paragraph on page 78 and 1st paragraph on 79 ...
... ESCD (extended system configuration data) Plug and Play BIOS: creates a list of all things you have done manually to the configuration the PnP doesn’t do Last paragraph on page 78 and 1st paragraph on 79 ...
Introduction to OS - faculty.cs.tamu.edu
... Time Sharing (mid 1960s on)! •! OS interleaves execution of multiple user programs with time quantum! –! CTSS (1961): time quantum 0.2 sec! •! User returns to own the machine! •! New aspects and issues:! –! On-line file systems! –! resource protection! –! virtual memory! –! sophisticated process sch ...
... Time Sharing (mid 1960s on)! •! OS interleaves execution of multiple user programs with time quantum! –! CTSS (1961): time quantum 0.2 sec! •! User returns to own the machine! •! New aspects and issues:! –! On-line file systems! –! resource protection! –! virtual memory! –! sophisticated process sch ...
Operating Systems I Supervision Exercises
... executables to directly specify the physical memory addresses of their constituents. Explain why a multiprogramming operating system cannot allow this. (e) A system architect suggests that all memory addresses in programs should be rewritten as the program is loaded into memory. Another suggests tha ...
... executables to directly specify the physical memory addresses of their constituents. Explain why a multiprogramming operating system cannot allow this. (e) A system architect suggests that all memory addresses in programs should be rewritten as the program is loaded into memory. Another suggests tha ...
9.1_RT-Vocabulary
... Input data rates: typically < 1 KB/sec Fixed set of processes; software is "pre-loaded“ ...
... Input data rates: typically < 1 KB/sec Fixed set of processes; software is "pre-loaded“ ...
What is Linux? - Longwood Blogs
... As the title implies, this guide is for people who want to learn about coding in a Linux environment. Topics covered include VIM shortcuts, comparisons of Linux to other operating systems, and more. One of the topics not covered is the installation process, and so this guide is not intended for thos ...
... As the title implies, this guide is for people who want to learn about coding in a Linux environment. Topics covered include VIM shortcuts, comparisons of Linux to other operating systems, and more. One of the topics not covered is the installation process, and so this guide is not intended for thos ...
L03 - UMBC
... linux#[1]% _ where # is the number of the Linux server to which you have connected. You may use any of the Linux servers: linux1, linux2 or linux3. ...
... linux#[1]% _ where # is the number of the Linux server to which you have connected. You may use any of the Linux servers: linux1, linux2 or linux3. ...
ppt
... • Assemblers are the simplest of all programming tools. They translate mnemonic instructions to machine code. • Most assemblers carry out this translation in two passes over the source code. —The first pass partially assembles the code and builds the symbol table —The second pass completes the instr ...
... • Assemblers are the simplest of all programming tools. They translate mnemonic instructions to machine code. • Most assemblers carry out this translation in two passes over the source code. —The first pass partially assembles the code and builds the symbol table —The second pass completes the instr ...