1.01 - UCSB Computer Science
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes ...
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes ...
Computer-System Operation
... Operating system indexes into I/O device table to determine device status and to modify table entry to include interrupt. ...
... Operating system indexes into I/O device table to determine device status and to modify table entry to include interrupt. ...
PDF slides
... 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 informs CPU that it has finished its operation by causin ...
... 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 informs CPU that it has finished its operation by causin ...
Chapter 1: Introduction
... while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
... while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
CIS 721 - Lecture 1
... The Operating System • An operating system (sometimes abbreviated as “OS”) is a program that functions as a virtual machine (layer of software on top of bare hardware) and a resource manager (software that controls access to computer). • It interacts with two agencies: applications and a command la ...
... The Operating System • An operating system (sometimes abbreviated as “OS”) is a program that functions as a virtual machine (layer of software on top of bare hardware) and a resource manager (software that controls access to computer). • It interacts with two agencies: applications and a command la ...
Set 1
... Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization Providing mechanisms for process communication Providing mechanisms for deadlock handling ...
... Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization Providing mechanisms for process communication Providing mechanisms for deadlock handling ...
Abstract View of System Components
... be written in higher-level languages. Code written in a high-level language: can be written faster. ...
... be written in higher-level languages. Code written in a high-level language: can be written faster. ...
- TestbankU
... 24. What are the advantages of using a higher-level language to implement an operating system? Ans: The code can be written faster, is more compact, and is easier to understand and debug. In addition, improvements in compiler technology will improve the generated code for the entire operating system ...
... 24. What are the advantages of using a higher-level language to implement an operating system? Ans: The code can be written faster, is more compact, and is easier to understand and debug. In addition, improvements in compiler technology will improve the generated code for the entire operating system ...
Devices and Device Controllers
... Hard disks are not true random-access storage devices. Transferring data between main memory and disk involves: Seek time – Wait until the hard drive has positioned the read/write head(s) above the appropriate track or cylinder. Rotational latency – Wait until the sector that we want to read from is ...
... Hard disks are not true random-access storage devices. Transferring data between main memory and disk involves: Seek time – Wait until the hard drive has positioned the read/write head(s) above the appropriate track or cylinder. Rotational latency – Wait until the sector that we want to read from is ...
Introduction - UW Courses Web Server
... • Several jobs are kept in main memory a same time • OS picks one of them to execute • The job may have to wait for a slow I/O operation to complete • OS picks & executes another job • OS Requirements: – Job scheduling – Memory management IBM System/360 CSS 430: Operating Systems - Introduction ...
... • Several jobs are kept in main memory a same time • OS picks one of them to execute • The job may have to wait for a slow I/O operation to complete • OS picks & executes another job • OS Requirements: – Job scheduling – Memory management IBM System/360 CSS 430: Operating Systems - Introduction ...
Operating System Structure
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other ...
... Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other ...
Ch2-V2
... of block passed as a parameter in a register This approach taken by Linux and Solaris Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or length of ...
... of block passed as a parameter in a register This approach taken by Linux and Solaris Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system Block and stack methods do not limit the number or length of ...
What is an Operating System?
... Peer-to-Peer Computing Another model of distributed system P2P does not distinguish clients and servers ...
... Peer-to-Peer Computing Another model of distributed system P2P does not distinguish clients and servers ...
Low-level design features explain why OS/2 Warp, Windows 95
... serviced without costly overhead, since the system DLLs are in the same address space as the calling application. The working set is also kept to a reasonable size, since multiple instances of system DLLs are not required. But protection is not guaranteed because badly behaved applications can still ...
... serviced without costly overhead, since the system DLLs are in the same address space as the calling application. The working set is also kept to a reasonable size, since multiple instances of system DLLs are not required. But protection is not guaranteed because badly behaved applications can still ...
9. Application/Kernel Interface
... Call the service function in the kernel Linux: array of function pointers indexed by system call number ...
... Call the service function in the kernel Linux: array of function pointers indexed by system call number ...
Introduction to Linux
... ■ whoami This command displays the username of the currently logged-in user. ■ netstat This command displays the status of the network, including current connections, routing tables, etc. ■ route This command is used to view or manipulate the system’s routing table. ■ ifconfig This command is used t ...
... ■ whoami This command displays the username of the currently logged-in user. ■ netstat This command displays the status of the network, including current connections, routing tables, etc. ■ route This command is used to view or manipulate the system’s routing table. ■ ifconfig This command is used t ...
Chapter 2 - cse.sc.edu
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...
Chapter 2
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...
... Chapter 2: Operating-System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure Operating System Debugging Operating System Generation System ...