9781439079201_PPT_ch12
... • Performance dependency – One resource depends on other system resources ...
... • Performance dependency – One resource depends on other system resources ...
ch2
... System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure ...
... System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure ...
204341 Operating Systems
... Systems generally first distinguish among users, to determine who can do what User identities (user IDs, security IDs) include name and numerical ID – Numerical IDs are unique, one per user. User ID then associated with all files, processes of that user to determine access control Group iden ...
... Systems generally first distinguish among users, to determine who can do what User identities (user IDs, security IDs) include name and numerical ID – Numerical IDs are unique, one per user. User ID then associated with all files, processes of that user to determine access control Group iden ...
What is an Operating System?
... Computer-System Operation 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 controlle ...
... Computer-System Operation 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 controlle ...
Operating-System Structures
... logical conclusion. It treats hardware and the operating system kernel as though they were all hardware A virtual machine provides an interface identical to ...
... logical conclusion. It treats hardware and the operating system kernel as though they were all hardware A virtual machine provides an interface identical to ...
Threads
... Throughput • When a traditional, single-threaded program requests a service from the operating system, it must wait for that service to complete, often leaving the CPU idle • Multithreading provides progress even though one or more threads wait for an event as long as other threads are active Ceng ...
... Throughput • When a traditional, single-threaded program requests a service from the operating system, it must wait for that service to complete, often leaving the CPU idle • Multithreading provides progress even though one or more threads wait for an event as long as other threads are active Ceng ...
I/O Systems & Mass-Storage Structure
... disk into sectors that the disk controller can read and write. To use a disk to hold files, the operating system still needs to record its own data structures on the disk. Partition the disk into one or more groups of cylinders. Logical formatting or “making a file system”. ...
... disk into sectors that the disk controller can read and write. To use a disk to hold files, the operating system still needs to record its own data structures on the disk. Partition the disk into one or more groups of cylinders. Logical formatting or “making a file system”. ...
developing a saas-cloud integrated development environment (ide)
... Environment (IDE) must be installed first along the compiler before it ready for use [5,7,8]. For example, when users would developing Java application using Netbeans, they must install Java Development Kit as package to compile and build the code. It doesn’t matter if user really need to compile th ...
... Environment (IDE) must be installed first along the compiler before it ready for use [5,7,8]. For example, when users would developing Java application using Netbeans, they must install Java Development Kit as package to compile and build the code. It doesn’t matter if user really need to compile th ...
Interprocess communication
... Also introduced in System V Release 3 Allows two or more processes to share some memory segments With some control over read/write permissions Often used to implement threads packages for UNIX ...
... Also introduced in System V Release 3 Allows two or more processes to share some memory segments With some control over read/write permissions Often used to implement threads packages for UNIX ...
Chapter 1: Introduction
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type ...
... I/O devices and the CPU can execute concurrently Each device controller is in charge of a particular device type ...
Operating Systems
... 5. Copy the registers from where they were saved (possibly some stack) to the process table. 6. Run the interrupt service procedure. It will extract information from the interrupting device controller’s registers. 7. Choose which process to run next. 8. Set up the MMU context for the process to run ...
... 5. Copy the registers from where they were saved (possibly some stack) to the process table. 6. Run the interrupt service procedure. It will extract information from the interrupting device controller’s registers. 7. Choose which process to run next. 8. Set up the MMU context for the process to run ...
Device controllers
... ■ Discuss the principles of I/O hardware and its complexity ■ Provide details of the performance aspects of I/O hardware and ...
... ■ Discuss the principles of I/O hardware and its complexity ■ Provide details of the performance aspects of I/O hardware and ...
BIOS (Basic Input Output Service)
... • A basic software program containing all BIOS functions is permanently stored in the ROM. • This software functions as a basic operating system. • Is responsible for starting the PC. • This hardware integrated with software is also referred to as firmware. ...
... • A basic software program containing all BIOS functions is permanently stored in the ROM. • This software functions as a basic operating system. • Is responsible for starting the PC. • This hardware integrated with software is also referred to as firmware. ...
Good practice guide: General advice on securing operating
... The first category of attack, exploiting the TCP/IP stack, concerns the implementation of the operating system’s networking components. As a typical example, the so-called ‘ping of death’ attack involves a malicious user sending a malformed ping packet to the target computer, causing the computer to ...
... The first category of attack, exploiting the TCP/IP stack, concerns the implementation of the operating system’s networking components. As a typical example, the so-called ‘ping of death’ attack involves a malicious user sending a malformed ping packet to the target computer, causing the computer to ...
Chapter 12
... – Indicates the likelihood that a resource will be ready when a user needs it. • For online Users, it may mean the probability that a port is free or a terminal is available when they attempt to log on. • for those already on the system, it may mean the probability that one or several specific resou ...
... – Indicates the likelihood that a resource will be ready when a user needs it. • For online Users, it may mean the probability that a port is free or a terminal is available when they attempt to log on. • for those already on the system, it may mean the probability that one or several specific resou ...
mryan_CA549_week1 - Redbrick
... Some systems use a Thread Control Block (TCB) to hold the register values, keep track of the stack, keep track of whether runnable, and some other stuff. For a context switch, only the TCB needs to be involved. Process switching involves the whole PCB including the TCP. Some systems allow multiple t ...
... Some systems use a Thread Control Block (TCB) to hold the register values, keep track of the stack, keep track of whether runnable, and some other stuff. For a context switch, only the TCB needs to be involved. Process switching involves the whole PCB including the TCP. Some systems allow multiple t ...
ppt - Computer Science Division
... – Provide illusion of dedicated machine with infinite memory and infinite processors ...
... – Provide illusion of dedicated machine with infinite memory and infinite processors ...
kubi-cs162f05lec01
... – Provide illusion of dedicated machine with infinite memory and infinite processors ...
... – Provide illusion of dedicated machine with infinite memory and infinite processors ...
Glossary of A+ Terms
... Backup Operator — A Windows 2000/XP user account that can back up and restore any files on the system regardless of its having access to these files. bandwidth — In relation to analog communication, the range of frequencies that a communications channel or cable can carry. In general use, the term r ...
... Backup Operator — A Windows 2000/XP user account that can back up and restore any files on the system regardless of its having access to these files. bandwidth — In relation to analog communication, the range of frequencies that a communications channel or cable can carry. In general use, the term r ...
Chapter 11 I/O Management and Disk Scheduling
... • Logical I/O: – Deals with the device as a logical resource and is not concerned with the details of actually controlling the device – Allows user processes to deal with the device in terms of a device identifier and simple commands such as open, close, read, write ...
... • Logical I/O: – Deals with the device as a logical resource and is not concerned with the details of actually controlling the device – Allows user processes to deal with the device in terms of a device identifier and simple commands such as open, close, read, write ...
Operating-System Structures
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...