Computer Organisation Operating Systems
... • An Operating System is a program that acts as an interface between a user of a computer and the computer hardware. • It is the most important program of a computer because it manage all the computer software and hardware. • In addition to the basic functions on resources management, modern OS prov ...
... • An Operating System is a program that acts as an interface between a user of a computer and the computer hardware. • It is the most important program of a computer because it manage all the computer software and hardware. • In addition to the basic functions on resources management, modern OS prov ...
Best Practices for Data Sharing in a Grid Distributed
... provides no redundancy. Today, most customers are implementing RAID 5 file systems for almost everything. Dedicated hardware on the storage devices to generate RAID redundancy information (parity) has improved in performance and increased RAID 5 performance. The performance is equal to mirroring and ...
... provides no redundancy. Today, most customers are implementing RAID 5 file systems for almost everything. Dedicated hardware on the storage devices to generate RAID redundancy information (parity) has improved in performance and increased RAID 5 performance. The performance is equal to mirroring and ...
Operating Systems
... 1) An __________ is a program that controls the execution of application programs and acts as an interface between applications and the computer hardware. Answer: operating system (OS) 2) The portion of the monitor that is always in main memory and available for execution is referred to as the _____ ...
... 1) An __________ is a program that controls the execution of application programs and acts as an interface between applications and the computer hardware. Answer: operating system (OS) 2) The portion of the monitor that is always in main memory and available for execution is referred to as the _____ ...
PowerPoint XP
... One application uses only the processor One application uses only the disk drive Completion time is shorter when running ...
... One application uses only the processor One application uses only the disk drive Completion time is shorter when running ...
Ch1 Introduction to the Linux Kernel
... The kernel typically resides in an elevated system state compared to normal user applications This includes a protected memory space and full access to the hardware This system state and memory space is collectively referred to as kernel-space ...
... The kernel typically resides in an elevated system state compared to normal user applications This includes a protected memory space and full access to the hardware This system state and memory space is collectively referred to as kernel-space ...
I/O Management Software Operating System Design Issues
... – translate request through the device-independent standard interface (open, close, read, write) into appropriate sequence of commands (register manipulations) for the particular hardware – Initialise the hardware at boot time, and shut it down cleanly at shutdown ...
... – translate request through the device-independent standard interface (open, close, read, write) into appropriate sequence of commands (register manipulations) for the particular hardware – Initialise the hardware at boot time, and shut it down cleanly at shutdown ...
LinuxOS-SGOSbookCh20
... The system libraries define a standard set of functions through which applications interact with the kernel, and which implement much of the operating-system functionality that does not need the full privileges of kernel code. ...
... The system libraries define a standard set of functions through which applications interact with the kernel, and which implement much of the operating-system functionality that does not need the full privileges of kernel code. ...
Chap 01 - Introduction
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
Processes, Threads and Address Spaces
... • Variable priority class – A thread’s priority begins at some initial assigned value and then may change, up or down, during the thread’s lifetime – There is a FIFO queue at each priority level, but a thread may migrate to other queues within the variable priority class – The initial priority of a ...
... • Variable priority class – A thread’s priority begins at some initial assigned value and then may change, up or down, during the thread’s lifetime – There is a FIFO queue at each priority level, but a thread may migrate to other queues within the variable priority class – The initial priority of a ...
Process Scheduling
... Process Control Block Each process is represented in the operating system by a process control block (PCB)—also called a task control block. APCB is shown in Figure 3.3. It contains many pieces of information associated with a specific process, including these: Process state. The state may be new, r ...
... Process Control Block Each process is represented in the operating system by a process control block (PCB)—also called a task control block. APCB is shown in Figure 3.3. It contains many pieces of information associated with a specific process, including these: Process state. The state may be new, r ...
Chapter 5 - Input/Output
... during the scan • When a scan begins, all new requests are in one of the queues, with the other being empty • During the scan, all new requests are put into the queue that was initially empty • Thus, service of new requests is deferred until all the old requests have been processed Ceng 334 - Operat ...
... during the scan • When a scan begins, all new requests are in one of the queues, with the other being empty • During the scan, all new requests are put into the queue that was initially empty • Thus, service of new requests is deferred until all the old requests have been processed Ceng 334 - Operat ...
Chapter 6: CPU Scheduling 6.1 Basic Concepts CPU–I/O Burst Cycle
... In a uniprocessor system, only one process may run at a time; any other processes must wait until the CPU is free and can be rescheduled. ...
... In a uniprocessor system, only one process may run at a time; any other processes must wait until the CPU is free and can be rescheduled. ...
Presentation - lsp4you.com
... Information from the file is accessed in order, one record after the other. Compilers, multimedia applications, sound files, etc. are the most common examples of programs using sequential access. In case of a read operation, the record at the location pointed by the file pointer is read and the file ...
... Information from the file is accessed in order, one record after the other. Compilers, multimedia applications, sound files, etc. are the most common examples of programs using sequential access. In case of a read operation, the record at the location pointed by the file pointer is read and the file ...
10B17CI307: UNIX Programming Lab
... Upon completion of this course, the student will be able to: 1. You will be able to run various UNIX commands on a standard UNIX/LINUX Operating system (We will be using Ubuntu flavor of the Linux operating system). 2. You will be able to run C / C++ programs on UNIX. 3. You will be able to do shell ...
... Upon completion of this course, the student will be able to: 1. You will be able to run various UNIX commands on a standard UNIX/LINUX Operating system (We will be using Ubuntu flavor of the Linux operating system). 2. You will be able to run C / C++ programs on UNIX. 3. You will be able to do shell ...
Nagalaxmi Prasanna Gumpalli`s presentation on Enhancing
... know about the type of the underlying capability and about the protocol that is used for re-establishment. ...
... know about the type of the underlying capability and about the protocol that is used for re-establishment. ...
Jordan University of Science and Technology
... several tasks, a single CPU switches its attention between several sequential tasks. Multiple is like foreground/background with multiple backgrounds. Multitasking maximizes the utilization of the CPU and also provides for modular constructions of applications. Task: A task is called a Thread, is a ...
... several tasks, a single CPU switches its attention between several sequential tasks. Multiple is like foreground/background with multiple backgrounds. Multitasking maximizes the utilization of the CPU and also provides for modular constructions of applications. Task: A task is called a Thread, is a ...
The History of Amoeba
... network). If there are multiple LANs, then the out going router can act as FLIP router converting FLIP to standard TCP/IP allowing for LANs to exist all over the world. Parallelism: Parallelism is the concept of using multiple computers to work on the same process, allowing for an increase in speed ...
... network). If there are multiple LANs, then the out going router can act as FLIP router converting FLIP to standard TCP/IP allowing for LANs to exist all over the world. Parallelism: Parallelism is the concept of using multiple computers to work on the same process, allowing for an increase in speed ...
pdf book chapter - LIRA-Lab
... An important, but often not entirely obvious extension to uniprocessor operating systems, is support for multiple processors having access to a shared memory. Conceptually, the extension is simple in that all data structures needed by the operating system to manage the hardware, including the multip ...
... An important, but often not entirely obvious extension to uniprocessor operating systems, is support for multiple processors having access to a shared memory. Conceptually, the extension is simple in that all data structures needed by the operating system to manage the hardware, including the multip ...
2.01
... Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and ...
... Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and ...
Identify and describe the functions of different operating systems
... acceptability until the release of Windows 3.1 in 1992. Network capability was added to a new version called Windows for Workgroups later on in the same year. Used a GUI interface and supports Multi User/Multi Tasking capabilities. Current standard version for the home computer is Windows XP. ...
... acceptability until the release of Windows 3.1 in 1992. Network capability was added to a new version called Windows for Workgroups later on in the same year. Used a GUI interface and supports Multi User/Multi Tasking capabilities. Current standard version for the home computer is Windows XP. ...
the Mach kernel
... does not have an instruction pointer or a register set. A task contains a virtual address space, a set of port rights, and accounting information. A task is a passive entity that does nothing unless it has one or more threads executing in it. ...
... does not have an instruction pointer or a register set. A task contains a virtual address space, a set of port rights, and accounting information. A task is a passive entity that does nothing unless it has one or more threads executing in it. ...
System Call
... Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and ...
... Three general methods used to pass parameters to the OS Simplest: pass the parameters in registers In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and ...
PowerPoint
... Problem: users often wish to perform more than one activity at a time and uniprogramming does not allow this. z Uniprogrammed systems put in things like memory-resident programs that invoked asynchronously. One key problem with DOS is that there is no memory protection - one program may write the m ...
... Problem: users often wish to perform more than one activity at a time and uniprogramming does not allow this. z Uniprogrammed systems put in things like memory-resident programs that invoked asynchronously. One key problem with DOS is that there is no memory protection - one program may write the m ...