2.01 - Avi Silberschatz's Home Page
... Presents guest with system similar but not identical to hardware Guest must be modified to run on paravirtualized hardwareF Guest can be an OS, or in the case of Solaris 10 applications running ...
... Presents guest with system similar but not identical to hardware Guest must be modified to run on paravirtualized hardwareF Guest can be an OS, or in the case of Solaris 10 applications running ...
Silberschatz/7e Lecture Notes
... Commutate with each other, other physical systems via networking Useful for development, testing Consolidation of many low-resource use systems onto fewer busier ...
... Commutate with each other, other physical systems via networking Useful for development, testing Consolidation of many low-resource use systems onto fewer busier ...
Windows Server 2008
... A Short History of Operating Systems – The next evolution was the ability to share computer resources among various programs. – If a computer was very fast and could quickly switch among various programs, you could do several tasks seemingly all at once, and serve many people simultaneously. • Digi ...
... A Short History of Operating Systems – The next evolution was the ability to share computer resources among various programs. – If a computer was very fast and could quickly switch among various programs, you could do several tasks seemingly all at once, and serve many people simultaneously. • Digi ...
TPM: A More Trustworthy Solution to Computer Security
... 2) Microkernel: By late 1980's the microkernels were introduced, in which only the most basic process operating systems fail to guarantee its genuineness to its communication and input-output control was included in users or to the remote entity that it is communicating with, kernel space, while oth ...
... 2) Microkernel: By late 1980's the microkernels were introduced, in which only the most basic process operating systems fail to guarantee its genuineness to its communication and input-output control was included in users or to the remote entity that it is communicating with, kernel space, while oth ...
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 ...
OS: Structures
... Communicate with each other, other physical systems via networking Useful for development, testing Consolidation of many low-resource use systems onto fewer busier ...
... Communicate with each other, other physical systems via networking Useful for development, testing Consolidation of many low-resource use systems onto fewer busier ...
Modern Operating System - Tanenbaum solution 3rd
... 11. The manuscript contains 80 × 50 × 700 = 2.8 million characters. This is, of course, impossible to fit into the registers of any currently available CPU and is too big for a 1-MB cache, but if such hardware were available, the manuscript could be scanned in 2.8 msec from the registers or 5.8 msec ...
... 11. The manuscript contains 80 × 50 × 700 = 2.8 million characters. This is, of course, impossible to fit into the registers of any currently available CPU and is too big for a 1-MB cache, but if such hardware were available, the manuscript could be scanned in 2.8 msec from the registers or 5.8 msec ...
Chapter 1 Slides
... who can do what User identities (user IDs, security IDs) include name and associated number, one per user User ID then associated with all files, processes of that user to determine access control Group identifier (group ID) allows set of users to be defined and controls managed, then also ass ...
... who can do what User identities (user IDs, security IDs) include name and associated number, one per user User ID then associated with all files, processes of that user to determine access control Group identifier (group ID) allows set of users to be defined and controls managed, then also ass ...
Operating system structures
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs ...
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs ...
Our Digital World - Computer Information Systems
... A History of Operating Systems • Once there were no operating systems. • Increased complexity required change. • Mainframe computers had operating systems made by their manufacturer. © Paradigm Publishing, Inc. ...
... A History of Operating Systems • Once there were no operating systems. • Increased complexity required change. • Mainframe computers had operating systems made by their manufacturer. © Paradigm Publishing, Inc. ...
[ppt
... overlooking a few of these issues. The solution adopted was to canonicalize in the kernel after copying the filenames. ...
... overlooking a few of these issues. The solution adopted was to canonicalize in the kernel after copying the filenames. ...
Windows, Linux and Mac Operating system Booting Process: a
... where hardware configuration and detection has been perform, by looking and listen the errors and diagnosis reports e.g. Error codes, beeps codes, numeric codes. Will take care of identifying the Master boot record for the initializing the booting process. Step02: Now BIOS will look for the Booting ...
... where hardware configuration and detection has been perform, by looking and listen the errors and diagnosis reports e.g. Error codes, beeps codes, numeric codes. Will take care of identifying the Master boot record for the initializing the booting process. Step02: Now BIOS will look for the Booting ...
ppt
... The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, movies, sounds, documents, and programs, ...
... The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, movies, sounds, documents, and programs, ...
ch1 - Towson University
... The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, movies, sounds, documents, and programs, ...
... The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, movies, sounds, documents, and programs, ...
Operating System Tutorial
... An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives ...
... An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives ...
What is an Operating System?
... hardware, operating system, software) Information in use copied from slower to faster storage temporarily Faster storage (cache) checked first to determine if information is ...
... hardware, operating system, software) Information in use copied from slower to faster storage temporarily Faster storage (cache) checked first to determine if information is ...
Presentation
... • In each entry, information about the file is stored, including the filename, the file change date and the file size and the file attributes • Apart from the filename, each directory entry also contains some status bits that identify the type of filename contained in each entry • The status bits in ...
... • In each entry, information about the file is stored, including the filename, the file change date and the file size and the file attributes • Apart from the filename, each directory entry also contains some status bits that identify the type of filename contained in each entry • The status bits in ...
slides-13
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
Figure 5.01
... maintain the appropriate number of kernel threads allocated to the application Scheduler activations provide upcalls - a communication mechanism from the kernel to the thread library ...
... maintain the appropriate number of kernel threads allocated to the application Scheduler activations provide upcalls - a communication mechanism from the kernel to the thread library ...
Kernel I/O Subsystem
... The controller reads the command register and sees the write command. It reads the data-out register to get the byte and does the I/O to the device ...
... The controller reads the command register and sees the write command. It reads the data-out register to get the byte and does the I/O to the device ...
What is an Operating System?
... Protection – any mechanism for controlling access of processes or users to resources defined by the OS Security – defense of the system against internal and external attacks Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish ...
... Protection – any mechanism for controlling access of processes or users to resources defined by the OS Security – defense of the system against internal and external attacks Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish ...
High Performance Application-Oriented Operating Systems
... An E POS inflated interface embraces most of the consensual definitions for a system abstraction. It is inflated because it brings together not a single view of the abstraction it exports, but a collection of its most usual representations. Examples of inflated interfaces are thread, task, address s ...
... An E POS inflated interface embraces most of the consensual definitions for a system abstraction. It is inflated because it brings together not a single view of the abstraction it exports, but a collection of its most usual representations. Examples of inflated interfaces are thread, task, address s ...
Plan 9 from Bell Labs
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Plan 9 from Bell Labs is a distributed operating system, originally developed by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002. It takes some of the principles of Unix, developed in the same research group, but extends these to a networked environment with graphics terminals.In Plan 9, virtually all computing resources, including files, network connections, and peripheral devices, are represented through the file system rather than specialized interfaces. A unified network protocol called 9P ties a network of computers running Plan 9 together, allowing them to share all resources so represented.The name Plan 9 from Bell Labs is a reference to the Ed Wood 1959 cult science fiction Z-movie Plan 9 from Outer Space. Also, Glenda, the Plan 9 Bunny, is presumably a reference to Wood's film Glen or Glenda. The system continues to be used and developed by operating system researchers and hobbyists.