File-System
... Preserve the file until all references to it are deleted. Unix uses this approach for hard links by keeping a reference count in the file information block. ...
... Preserve the file until all references to it are deleted. Unix uses this approach for hard links by keeping a reference count in the file information block. ...
3. Operating Systems - Informática Ingeniería en Electrónica y
... a virtual or extended machine with a much simpler use. It hides fine working details the user does not need to know (e.g. how to manage the read/write head of a magnetic disc) It provides an extra set of instructions, the System Calls They can be used by other programs or by the programmer working ...
... a virtual or extended machine with a much simpler use. It hides fine working details the user does not need to know (e.g. how to manage the read/write head of a magnetic disc) It provides an extra set of instructions, the System Calls They can be used by other programs or by the programmer working ...
Operating System Basics - Computer Sciences User Pages
... – millions of CPU instructions can execute in the time it takes to access a single piece of data on disk ...
... – millions of CPU instructions can execute in the time it takes to access a single piece of data on disk ...
11. Kernel Design
... Only for very short periods of time Now mostly in legacy drivers and in the virtual file system ...
... Only for very short periods of time Now mostly in legacy drivers and in the virtual file system ...
Document
... A) block other processes, B) do I/O, C) change from ready to running, D) terminate, E) none of these 3. _____ No assumptions are made about speeds or A) the size of memory, B) the number of CPUs, C) the number of printers, D) the number of secondary memory devices, E) none of these 4. _____ No two p ...
... A) block other processes, B) do I/O, C) change from ready to running, D) terminate, E) none of these 3. _____ No assumptions are made about speeds or A) the size of memory, B) the number of CPUs, C) the number of printers, D) the number of secondary memory devices, E) none of these 4. _____ No two p ...
Basic Operating System Concepts
... event the CPU is switched to another job. Primary objective: eliminate CPU idle time Time sharing: An extension of multiprogramming. After a certain amount of time the CPU is switched to another job regardless of whether the process/thread needs to wait for some operation. Switching between jobs occ ...
... event the CPU is switched to another job. Primary objective: eliminate CPU idle time Time sharing: An extension of multiprogramming. After a certain amount of time the CPU is switched to another job regardless of whether the process/thread needs to wait for some operation. Switching between jobs occ ...
Scalable Apache for Beginners
... system – system calls to allocate memory, access a file, or create a child process take significant amounts of time – as with many scaling problems in computer systems, caching is one solution ...
... system – system calls to allocate memory, access a file, or create a child process take significant amounts of time – as with many scaling problems in computer systems, caching is one solution ...
Modern Trends Used In Operating Systems For High Speed
... D. Device Manager [3] Allow the user to view its capability and control the device through operating system. Which device may be enabling or disable or install or ignore the functionality of the device. In Microsoft windows operating system the control panel applet is the device manager .it also bui ...
... D. Device Manager [3] Allow the user to view its capability and control the device through operating system. Which device may be enabling or disable or install or ignore the functionality of the device. In Microsoft windows operating system the control panel applet is the device manager .it also bui ...
CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE
... of resources. Other resources such as memory and I/O devices are available to all processors. If they are available only to a few then system becomes asymmetric. The operating system is also symmetric. Any processor can execute it. The processor which executes the operating ...
... of resources. Other resources such as memory and I/O devices are available to all processors. If they are available only to a few then system becomes asymmetric. The operating system is also symmetric. Any processor can execute it. The processor which executes the operating ...
Operating-System Structures
... 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 ...
... 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 ...
File
... people in the poor villages of India. This system enables wireless communication between a village and a city in India or else in any other country. Suppose if a disaster tends to happen in a village only with the use of a switch the disaster management people in the city can come to know that a d ...
... people in the poor villages of India. This system enables wireless communication between a village and a city in India or else in any other country. Suppose if a disaster tends to happen in a village only with the use of a switch the disaster management people in the city can come to know that a d ...
Course\FOS\FOS Unit-1 2014
... Macintosh operating system, OS/2, and some versions of UNIX and Linux, provide a graphical user interface (GUI). Graphical user interfaces are so called because you use a mouse (or some other pointing device) to work with graphical objects such as windows, menus, icons, buttons, and other tools. Th ...
... Macintosh operating system, OS/2, and some versions of UNIX and Linux, provide a graphical user interface (GUI). Graphical user interfaces are so called because you use a mouse (or some other pointing device) to work with graphical objects such as windows, menus, icons, buttons, and other tools. Th ...
Chapter 8
... • Uses 32-bit addressing scheme (Windows 2000 server supports 64-bit addressing) • Each application is assigned its memory area so that the running processes are less prone to interfering with each other’s operations • Supports virtual memory – space on the hard drive that is reserved to be used to ...
... • Uses 32-bit addressing scheme (Windows 2000 server supports 64-bit addressing) • Each application is assigned its memory area so that the running processes are less prone to interfering with each other’s operations • Supports virtual memory – space on the hard drive that is reserved to be used to ...
Stallings - Chapter 11
... Can be line-at-a-time or byte-at-a-time Line-at-a-time Input and output is one line at a time; buffer ...
... Can be line-at-a-time or byte-at-a-time Line-at-a-time Input and output is one line at a time; buffer ...
Building an eGovernment Knowledge Platform
... Soft real-time systems ▪ Less accurate if response time is too long. ▪ Useful in applications such as multimedia, virtual reality. IS3313 Systems Software - Lecture 1 ...
... Soft real-time systems ▪ Less accurate if response time is too long. ▪ Useful in applications such as multimedia, virtual reality. IS3313 Systems Software - Lecture 1 ...
Creating a Virtual, More Efficient Plant
... minimum levels of performance that an application requires of a virtual machine. By sticking with existing hardware, plants face reduced upgrade costs. Plant operators can also stay on the same OS for longer since the ability to run on a physical piece of hardware is no longer dependent upon the und ...
... minimum levels of performance that an application requires of a virtual machine. By sticking with existing hardware, plants face reduced upgrade costs. Plant operators can also stay on the same OS for longer since the ability to run on a physical piece of hardware is no longer dependent upon the und ...
Threads, SMP, and Microkernels
... Benefits of Threads • Takes less time to create a new thread than a process • Less time to terminate a thread than a process • Less time to switch between two threads within the same process • Since threads within the same process share memory and files, they can communicate with each other without ...
... Benefits of Threads • Takes less time to create a new thread than a process • Less time to terminate a thread than a process • Less time to switch between two threads within the same process • Since threads within the same process share memory and files, they can communicate with each other without ...
Chapter 1: Introduction What is an Operating System?
... in memory and on disk (the CPU is allocated to a job only if the job is in memory). A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execution of one command, it seeks the next “control state ...
... in memory and on disk (the CPU is allocated to a job only if the job is in memory). A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execution of one command, it seeks the next “control state ...
Operating Systems (ECS 150) Spring 2011
... A, B, C, D for each activity. Final A, B, C, D computed by weighted average of these points Your final graded weighted in a similar manner Your final grade depends on where you fall.. ...
... A, B, C, D for each activity. Final A, B, C, D computed by weighted average of these points Your final graded weighted in a similar manner Your final grade depends on where you fall.. ...
Introduction to Object Technology
... • shortest-service-time-first (SSTF): pick the request that requires the least movement of the head • SCAN (back and forth over disk): good distribution • C-SCAN(one way with fast return):lower service variability but head may not be moved for a considerable period of time • N-step SCAN: scan of N r ...
... • shortest-service-time-first (SSTF): pick the request that requires the least movement of the head • SCAN (back and forth over disk): good distribution • C-SCAN(one way with fast return):lower service variability but head may not be moved for a considerable period of time • N-step SCAN: scan of N r ...
EET-225 Homework #1
... 6. What is the purpose of HAL? What language is the HAL written in and why? 7. Briefly describe the Windows 2000 / XP boot process. List each major component that is loaded, and how it interacts with the system. 8. Draw a block diagram of the major Windows 2000 / XP components that are present at ru ...
... 6. What is the purpose of HAL? What language is the HAL written in and why? 7. Briefly describe the Windows 2000 / XP boot process. List each major component that is loaded, and how it interacts with the system. 8. Draw a block diagram of the major Windows 2000 / XP components that are present at ru ...