system call
... An operating system is far easier to port (move to some other hardware platform) if it is written in a high level language. ...
... An operating system is far easier to port (move to some other hardware platform) if it is written in a high level language. ...
Al- Balqa Applied University Al-huson University College Dept. of
... B) kernel is the first part of operating system to load into memory during booting C) kernel is made of various modules which can not be loaded in running operating system D) kernel remains in the memory during the entire computer session 19- Which one of the following error will be handle by the op ...
... B) kernel is the first part of operating system to load into memory during booting C) kernel is made of various modules which can not be loaded in running operating system D) kernel remains in the memory during the entire computer session 19- Which one of the following error will be handle by the op ...
File System
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
CS 414/415 Systems Programming and
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
Overview of Operating Systems
... Ø The kernel has a set of core components Ø Dynamically links in additional services either during boottime or during run-time Ø Common in modern implementations of Unix such as Linux and Solaris ...
... Ø The kernel has a set of core components Ø Dynamically links in additional services either during boottime or during run-time Ø Common in modern implementations of Unix such as Linux and Solaris ...
process
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ...
DS Chapter 6
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ...
Introduction to OS
... 1. Monolithic: The OS was developed as a big program which contained functions written for OS functionalities. All the functions could call each other and modification in any module would require recompiling of whole OS and reinstallation of the same. There was no concept of data hiding , encapsulat ...
... 1. Monolithic: The OS was developed as a big program which contained functions written for OS functionalities. All the functions could call each other and modification in any module would require recompiling of whole OS and reinstallation of the same. There was no concept of data hiding , encapsulat ...
Presentation
... C. Systems Software 3. Operating system (OS) – Supervises the overall operation of computer – Serves as a critical link in computer operations ...
... C. Systems Software 3. Operating system (OS) – Supervises the overall operation of computer – Serves as a critical link in computer operations ...
Introduction
... • OS implements the abstract concept of file by managing mass storage media (disk etc) and devices that control them • Files usually organized into directories • Access control on most systems to determine who can access what • File-System management – Creating and deleting files and directories – P ...
... • OS implements the abstract concept of file by managing mass storage media (disk etc) and devices that control them • Files usually organized into directories • Access control on most systems to determine who can access what • File-System management – Creating and deleting files and directories – P ...
CMPS431 Syllabus, Fall 2009
... Describe the functions of a contemporary operating system with respect to convenience, efficiency, and the ability to evolve. Discuss networked, client-server, distributed operating systems and how they differ from single user operating systems. Identify potential threats to operating systems and th ...
... Describe the functions of a contemporary operating system with respect to convenience, efficiency, and the ability to evolve. Discuss networked, client-server, distributed operating systems and how they differ from single user operating systems. Identify potential threats to operating systems and th ...
system call - efreidoc.fr
... software faults and malicious action and safe from errors that the operating system may produce as a result of its actions. Thus the OS needs to provide software that is part of OS for security and protection to prevent unauthorised use of resources and to monitor its own actions for safety e.g. man ...
... software faults and malicious action and safe from errors that the operating system may produce as a result of its actions. Thus the OS needs to provide software that is part of OS for security and protection to prevent unauthorised use of resources and to monitor its own actions for safety e.g. man ...
Operating Systems Operating Systems Operating Systems
... Many services can be implemented either in the OS kernel or as a processes that can be run in user mode. ...
... Many services can be implemented either in the OS kernel or as a processes that can be run in user mode. ...
Memory Management
... Why? Computers got faster but I/O did not speed up at same rate. I/O operations left processor idle. Solution: Run another program while reading in a new program. Must expand memory to support multiple jobs. Features introduced on Monitor-type computer operating systems: Multiprogramming: ...
... Why? Computers got faster but I/O did not speed up at same rate. I/O operations left processor idle. Solution: Run another program while reading in a new program. Must expand memory to support multiple jobs. Features introduced on Monitor-type computer operating systems: Multiprogramming: ...
Operating Systems Overview - Physics, Computer Science and
... Big issue: protection z Don't want one job to affect the results of another. z Memory protection and relocation added to hardware, OS must manage new hardware functionality. z OS starts to become a significant software system. z OS also starts to take up significant resources on its own. ...
... Big issue: protection z Don't want one job to affect the results of another. z Memory protection and relocation added to hardware, OS must manage new hardware functionality. z OS starts to become a significant software system. z OS also starts to take up significant resources on its own. ...
COS 318: Operating Systems Overview
... built that were compatible u Single OS to run on all (IBM OS/360): big and bloated u Key innovation: multiprogramming u What happens when a job is waiting on I/O u What if jobs spend a lot of the time waiting on I/O? u ...
... built that were compatible u Single OS to run on all (IBM OS/360): big and bloated u Key innovation: multiprogramming u What happens when a job is waiting on I/O u What if jobs spend a lot of the time waiting on I/O? u ...
Introduction to Computer and Operating Systems
... Caching – copying information into faster storage system; main memory can be viewed as a last cache for secondary storage ...
... Caching – copying information into faster storage system; main memory can be viewed as a last cache for secondary storage ...
Introduction to Computer and Operating Systems
... Caching – copying information into faster storage system; main memory can be viewed as a last cache for secondary storage ...
... Caching – copying information into faster storage system; main memory can be viewed as a last cache for secondary storage ...
over view of operating system
... When it has to wait (for I/O for example), OS switches to another job Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... When it has to wait (for I/O for example), OS switches to another job Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
OPERATING SYSTEMS:
... IC Integrated Circuits provided a major price/performance over 2 nd generations machines The code consisted of millions of lines of Assembly language written by thousands of programmers and contained thousands of bugs, which necessitated continuous stream of new releases. With new releases, new bugs ...
... IC Integrated Circuits provided a major price/performance over 2 nd generations machines The code consisted of millions of lines of Assembly language written by thousands of programmers and contained thousands of bugs, which necessitated continuous stream of new releases. With new releases, new bugs ...
Multiprogrammed Batch Systems
... Computer System Components 1. Hardware – provides basic computing resources (CPU, memory, I/O devices). 2. Operating system – controls and coordinates the use of the hardware among the various application programs for the various users. 3. Applications programs – define the ways in which the system ...
... Computer System Components 1. Hardware – provides basic computing resources (CPU, memory, I/O devices). 2. Operating system – controls and coordinates the use of the hardware among the various application programs for the various users. 3. Applications programs – define the ways in which the system ...
Welcome to NETS3304/3604 Operating System Internals
... CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ready to run at the same time scheduling ...
... CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process If several jobs ready to run at the same time scheduling ...
Batching processing
... Scheduler--According to some priorities or concerns, it determines which activities should be considered for execution. ...
... Scheduler--According to some priorities or concerns, it determines which activities should be considered for execution. ...