Agenda - Seneca - School of Information & Communications
... that more person to directly communicate with the computer. Although the OS can only work on one task at a time, a small piece of time (time slice) is dedicated to each task or user - this is referred to as “time-sharing”. Time sharing gives the illusion that the CPU is giving all the users its full ...
... that more person to directly communicate with the computer. Although the OS can only work on one task at a time, a small piece of time (time slice) is dedicated to each task or user - this is referred to as “time-sharing”. Time sharing gives the illusion that the CPU is giving all the users its full ...
Operating System
... Users submit jobs to a central place where these jobs are collected into a Time-Sharing Operating batch, and subsequently placed on an input System queue at the computer where they will be run. The user has no interaction with the job during its processing. The computer’s response time is the turn ...
... Users submit jobs to a central place where these jobs are collected into a Time-Sharing Operating batch, and subsequently placed on an input System queue at the computer where they will be run. The user has no interaction with the job during its processing. The computer’s response time is the turn ...
Operating System Structures - McMaster Computing and Software
... loaders, linkage editors, and overlay-loaders, debugging systems for higher-level and machine language Communications - Provide the mechanism for creating virtual connections among processes, users, and computer systems ...
... loaders, linkage editors, and overlay-loaders, debugging systems for higher-level and machine language Communications - Provide the mechanism for creating virtual connections among processes, users, and computer systems ...
UI thread - Duke University
... The kernel can suspend/restart the thread wherever and whenever it wants. ...
... The kernel can suspend/restart the thread wherever and whenever it wants. ...
What is an Operating System?
... Time-Sharing Systems–Interactive Computing The CPU is multiplexed among several jobs ...
... Time-Sharing Systems–Interactive Computing The CPU is multiplexed among several jobs ...
Threads
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
(1) What is operating System? Explain the abstract view of the
... one, if the latter provides some useful computation that the former needs. To construct the actual object program of the operating system, when this approach is used, one first compiles all the individual procedure and then binds (group) them all together into a single executable file using the syst ...
... one, if the latter provides some useful computation that the former needs. To construct the actual object program of the operating system, when this approach is used, one first compiles all the individual procedure and then binds (group) them all together into a single executable file using the syst ...
user-level threads
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
... (grandma’s modem connection) – Takes server a loooong time to feed the response to grandma – While it’s doing that it can’t service any more requests ...
Multiprocessor Memory Allocation
... UNIVERSITY OF MASSACHUSETTS, AMHERST • Department of Computer Science ...
... UNIVERSITY OF MASSACHUSETTS, AMHERST • Department of Computer Science ...
ppt
... Process creation and deletion. process suspension and resumption. Provision of mechanisms for: ...
... Process creation and deletion. process suspension and resumption. Provision of mechanisms for: ...
AUSI-13- (Software)
... • One program may execute more than one task • Example print and edit at the same time ...
... • One program may execute more than one task • Example print and edit at the same time ...
No Slide Title
... The process has a virtual memory address space, information (such as a base priority), and an affinity for one or more processors. Threads are the unit of execution scheduled by the kernel’s dispatcher. Each thread has its own state, including a priority, processor affinity, and accounting informati ...
... The process has a virtual memory address space, information (such as a base priority), and an affinity for one or more processors. Threads are the unit of execution scheduled by the kernel’s dispatcher. Each thread has its own state, including a priority, processor affinity, and accounting informati ...
Lecture 28
... immediate allocation leaves the system in a safe state. System is in safe state if there exists a safe sequence of all processes. Sequence is safe if for each Pi, the resources that Pi
...
... immediate allocation leaves the system in a safe state. System is in safe state if there exists a safe sequence of all processes. Sequence
PPT - UNL CSE
... Tom is deploying a new server program for his client. During the field test, he notices that its performance is below his expectation. How would he identify the main causes? A company is planning to upgrade the server systems. You are asked to analyze which systems and which configurations will ...
... Tom is deploying a new server program for his client. During the field test, he notices that its performance is below his expectation. How would he identify the main causes? A company is planning to upgrade the server systems. You are asked to analyze which systems and which configurations will ...
G2_Survey_SynchronizationTools
... • Mutual-exclusion guarantees that certain sections of code (critical sections) will not be executed by more than one process simultaneously. These sections of code usually access shared variables in a common store or access shared hardware. • The standard solution to kernel-level mutualexclusion in ...
... • Mutual-exclusion guarantees that certain sections of code (critical sections) will not be executed by more than one process simultaneously. These sections of code usually access shared variables in a common store or access shared hardware. • The standard solution to kernel-level mutualexclusion in ...
Chapter 1: Introduction
... Provides ability to distinguish when system is running user code or kernel code Some instructions designated as privileged, only executable in kernel mode System call changes mode to kernel, return from call resets it to user ...
... Provides ability to distinguish when system is running user code or kernel code Some instructions designated as privileged, only executable in kernel mode System call changes mode to kernel, return from call resets it to user ...
What is an Operating System?
... All instructions in memory in order to execute Memory management determines what is in memory when ...
... All instructions in memory in order to execute Memory management determines what is in memory when ...
Operating System Services
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
Silberschatz/7e Lecture Notes
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller Device controller infor ...
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller Device controller infor ...
Ch 1
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller Device controller infor ...
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type Each device controller has a local buffer CPU moves data from/to main memory to/from local buffers I/O is from the device to local buffer of controller Device controller infor ...
Amoeba Distributed Operating System
... It has not had an official update in over 10 years Can use older/slower CPUs to create a powerful system Micro-Kernel allows for other file systems to be created ...
... It has not had an official update in over 10 years Can use older/slower CPUs to create a powerful system Micro-Kernel allows for other file systems to be created ...
Chapter 8 Virtual Memory
... may not be replaced kernel of the OS as well as key control structures are held in locked frames I/O buffers and time-critical areas may be locked into main memory frames locking is achieved by associating a lock bit with each ...
... may not be replaced kernel of the OS as well as key control structures are held in locked frames I/O buffers and time-critical areas may be locked into main memory frames locking is achieved by associating a lock bit with each ...