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Chapter 10: Mass-Storage Systems
Chapter 10: Mass-Storage Systems

... ■  Disk striping uses a group of disks as one storage unit ■  RAID is arranged into six different levels ■  RAID schemes improve performance and improve the reliability ...
Chapter 3: Operating-System Structures Common System
Chapter 3: Operating-System Structures Common System

... ■ Since main memory (primary storage) is volatile and too ...
Module 3: Operating
Module 3: Operating

...  Since main memory (primary storage) is volatile and too ...
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...  Since main memory (primary storage) is volatile and too ...
[slides] Case study: Linux
[slides] Case study: Linux

... device-drive support, and supported only the Minix file system  Linux 1.0 (March 1994) included these new features: ...
Chapter 3
Chapter 3

...  Since main memory (primary storage) is volatile and too ...
Identify and describe the functions of different operating systems
Identify and describe the functions of different operating systems

... (or multi user). Therefore, they were not capable of running multiple tasks at any one time. The ‘jobs’ that the operating system was asked to do were done one at a time. This meant that for a lot of the time, the CPU of the computer sat idle, waiting for the operator to ask it to do something else ...
Identify and describe the functions of different operating systems
Identify and describe the functions of different operating systems

... (or multi user). Therefore, they were not capable of running multiple tasks at any one time. The ‘jobs’ that the operating system was asked to do were done one at a time. This meant that for a lot of the time, the CPU of the computer sat idle, waiting for the operator to ask it to do something else ...
ch16.ppt
ch16.ppt

... or by inheriting a handle from its parent process.  Each object is protected by an access control list.  The executive name space is extensible to allow naming of files, ...
Chapter 16: Windows 7
Chapter 16: Windows 7

... or by inheriting a handle from its parent process. „ Each object is protected by an access control list. „ The executive name space is extensible to allow naming of files, ...
[slides] Case study: Windows
[slides] Case study: Windows

... or by inheriting a handle from its parent process.  Each object is protected by an access control list.  The executive name space is extensible to allow naming of files, ...
Chapter 16: Windows 7
Chapter 16: Windows 7

... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process.!   Each object is protected by an access control list.! ...
ch16
ch16

... or by inheriting a handle from its parent process.  Each object is protected by an access control list.  The executive name space is extensible to allow naming of files, ...
ch01.pdf
ch01.pdf

... Operating System Structure (cont.)  Timesharing (multitasking) is logical extension of multiprogramming 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 ...
Chapter 1 (Part 2) Introduction to Operating System
Chapter 1 (Part 2) Introduction to Operating System

... communication between user and the system The user gives instructions to the system directly, waits for immediately results. Response time should be short. when the operating system finishes the execution of one command, it seeks the next “control statement” from the user’s keyboard. ...
ch21-The_Linux_System
ch21-The_Linux_System

... limited device-drive support, and supported only the Minix file system  Linux 1.0 (March 1994) included these new features: ...
Chapter 19 Real
Chapter 19 Real

... ◦ Physical address P is generated by adding the contents of relocation register R to L. ◦ Real time systems are configure the MMU to perform this way because MMU can easily translate logical addresses to physical addresses using P=L+R. ◦ This system will also not provide memory protection between pr ...
CS540_Ch19
CS540_Ch19

... ◦ Physical address P is generated by adding the contents of relocation register R to L. ◦ Real time systems are configure the MMU to perform this way because MMU can easily translate logical addresses to physical addresses using P=L+R. ◦ This system will also not provide memory protection between pr ...
What is an Operating System?
What is an Operating System?

... so frequently that users can interact with each job while it is running, creating interactive computing ...


... of metadata, disk blocks, and buffer cache pages, all of which are guarded by access control on high-level file objects. While exokernels allow direct access to low-level resources, exokernel systems must be able to provide UNIX-like protection, including access control on high-level objects where r ...
Chapter 1: Introduction
Chapter 1: Introduction

... so frequently that users can interact with each job while it is running, creating interactive computing ...
Learn Computer Pre-Tech
Learn Computer Pre-Tech

... Certification for Dummies”. Each student should make every attempt to purchase their own copy, as they will find highlighting sections of the reading to be most helpful. Your instructor can get the books and is willing to collect money and purchase the books as requested if anyone is interested. Boo ...
What is an Operating System?
What is an Operating System?

... When it has to wait (for I/O for example), OS switches to another job ...
Homework 1
Homework 1

... The first PCs, which were based on the 16-bit Intel 8088 processor, were only capable of addressing 1MB of physical memory. The physical address space of an early PC would therefore start at 0x00000000 but end at 0x000FFFFF instead of 0xFFFFFFFF. The 640KB area marked "Low Memory" was the only rando ...
ppt
ppt

... once the system call has completed and control is about to be returned to user mode 2. The second technique applies to critical sections that occur in an interrupt service routines – By using the processor’s interrupt control hardware to disable interrupts during a critical section, the kernel guara ...
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Paging

In computer operating systems, paging is one of the memory management schemes by which a computer stores and retrieves data from the secondary storage for use in main memory. In the paging memory-management scheme, the operating system retrieves data from secondary storage in same-size blocks called pages. The main advantage of paging over memory segmentation is that it allows the physical address space of a process to be noncontiguous. Before paging came into use, systems had to fit whole programs or their whole segments into storage contiguously, which caused various storage and fragmentation problems.Paging is an important part of virtual memory implementation in most contemporary general-purpose operating systems, allowing them to use secondary storage for data that does not fit into physical random-access memory (RAM).
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