Processes
... • Recent CPU x86 virtualization instructions for a hypervisor to control ring0 hardware access – Create a new ”Ring -1” – Guest OS can run Ring0 operations natively without affecting other guests or the host OS – both Intel's "Vanderpool" (or VT) and AMD's "Pacifica" (AMD-V) ...
... • Recent CPU x86 virtualization instructions for a hypervisor to control ring0 hardware access – Create a new ”Ring -1” – Guest OS can run Ring0 operations natively without affecting other guests or the host OS – both Intel's "Vanderpool" (or VT) and AMD's "Pacifica" (AMD-V) ...
Lecture11au
... Anything address based needs to be saved and restored Threads: lightweight All threads run in the same address space Still have same basic state machine (ready, running, blocked, killed) Still need context switching for registers, stack. ...
... Anything address based needs to be saved and restored Threads: lightweight All threads run in the same address space Still have same basic state machine (ready, running, blocked, killed) Still need context switching for registers, stack. ...
Security+ Guide to Network Security Fundamentals
... Establish all log files as “append only” Prevent users from installing, removing, or ...
... Establish all log files as “append only” Prevent users from installing, removing, or ...
Software - Hoxie Public Schools
... Translators Computers cannot read program statements in programming language format, such as Visual Basic or Java program statements. Language translator programs convert English-like software programs into machine code that can be understood by the computer. Each converted English-like instruction ...
... Translators Computers cannot read program statements in programming language format, such as Visual Basic or Java program statements. Language translator programs convert English-like software programs into machine code that can be understood by the computer. Each converted English-like instruction ...
Ready queue is partitioned into separate queues
... shells : the system with multiple command interpreters to choose from , the interpreters knows as shells ...
... shells : the system with multiple command interpreters to choose from , the interpreters knows as shells ...
Slide 1
... know much about the hardware • The OS provides all applications with a straight-forward and consistent interface to hardware Example: An application uses the OS to store data on the disk drive without knowing exact physical characteristics of the disk. ...
... know much about the hardware • The OS provides all applications with a straight-forward and consistent interface to hardware Example: An application uses the OS to store data on the disk drive without knowing exact physical characteristics of the disk. ...
I/O Management and Disk Scheduling
... • Why buffering is required? – When a user process wants to read blocks of data from a disk, process waits for the transfer – It waits either by • Busy waiting • Process suspension on an interrupt – The problems with this approach • Program waits for slow I/O • Virtual locations should stay in the m ...
... • Why buffering is required? – When a user process wants to read blocks of data from a disk, process waits for the transfer – It waits either by • Busy waiting • Process suspension on an interrupt – The problems with this approach • Program waits for slow I/O • Virtual locations should stay in the m ...
Security+ Guide to Network Security Fundamentals
... Establish all log files as “append only” Prevent users from installing, removing, or ...
... Establish all log files as “append only” Prevent users from installing, removing, or ...
Introduction to Operating Systems
... very large number of virtual CPUs. Turning a single CPU (or small set of them) into a seemingly infinite number of CPUs and thus allowing many programs to seemingly run at once is what we call virtualizing the CPU, the focus of the first major part of this book. Of course, to run programs, and stop ...
... very large number of virtual CPUs. Turning a single CPU (or small set of them) into a seemingly infinite number of CPUs and thus allowing many programs to seemingly run at once is what we call virtualizing the CPU, the focus of the first major part of this book. Of course, to run programs, and stop ...
lecture4-sept13
... Process Termination • Process executes last statement and asks the operating system to delete it (exit) – Output data from child to parent (via wait) – Process’ resources are deallocated by operating system • Parent may terminate execution of children processes (abort) – Child has exceeded allocated ...
... Process Termination • Process executes last statement and asks the operating system to delete it (exit) – Output data from child to parent (via wait) – Process’ resources are deallocated by operating system • Parent may terminate execution of children processes (abort) – Child has exceeded allocated ...
chapter 1 Introduction
... Resource Abstraction … an example (Consider the C language statement fprintf ) fprintf ( fileId , “%d” , var1 ) write ( block , 100 , device , 266 , 9 ) ...
... Resource Abstraction … an example (Consider the C language statement fprintf ) fprintf ( fileId , “%d” , var1 ) write ( block , 100 , device , 266 , 9 ) ...
DOS Tutorial
... Every disk drive has a root directory which can have subdirectories which are named in the same format as filenames, (though generally without any extension). The subdirectories can have subdirectories and so on. Eg: a floppy disk might contain the following directory structure: PICTURES [a director ...
... Every disk drive has a root directory which can have subdirectories which are named in the same format as filenames, (though generally without any extension). The subdirectories can have subdirectories and so on. Eg: a floppy disk might contain the following directory structure: PICTURES [a director ...
Distributed Systems
... •Always an issue: size of a page in DSM – why? •Large sized page are potentially good but they may entail false sharing •Having data belonging to two independent processes in the same page… ...
... •Always an issue: size of a page in DSM – why? •Large sized page are potentially good but they may entail false sharing •Having data belonging to two independent processes in the same page… ...
Chapter 1
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
Introduction
... Personal computer operating systems Real-time operating systems Embedded operating systems Smart card operating systems ...
... Personal computer operating systems Real-time operating systems Embedded operating systems Smart card operating systems ...
Chapter 1 Introduction
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
Multiprocessor and Real
... used by a job currently using more than one processor – Hold request until processor is available – Assign processor a jog in the list that currently has no processors (i.e., to all waiting new arrivals) ...
... used by a job currently using more than one processor – Hold request until processor is available – Assign processor a jog in the list that currently has no processors (i.e., to all waiting new arrivals) ...
Introduction Chapter 1 Introduction What is an Operating System
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
... 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure ...
Chapter 1: A Tour of Computer Systems
... (local disks) Local disks hold files retrieved from disks on remote network servers. ...
... (local disks) Local disks hold files retrieved from disks on remote network servers. ...
An all-in-one monolithic kernel.
... • The solution to priority inversion, where a process using a resource has its priority temporarily increased to that of the highest priority process waiting for the resource. • The solution to priority inversion, where all processes waiting on a resource temporarily get the same priority as the pro ...
... • The solution to priority inversion, where a process using a resource has its priority temporarily increased to that of the highest priority process waiting for the resource. • The solution to priority inversion, where all processes waiting on a resource temporarily get the same priority as the pro ...
Module 3: Operating
... – in case of errors: print message and exit – if no error: a loop where characters are read from file1 and copied to file2 (2 system calls, with possible errors returned in case of a problem, such as space on disk exhausted) – close both files – terminate ...
... – in case of errors: print message and exit – if no error: a loop where characters are read from file1 and copied to file2 (2 system calls, with possible errors returned in case of a problem, such as space on disk exhausted) – close both files – terminate ...
Install the Operating System
... identically to Safe Mode and also loads the drivers for network components. Safe Mode with Command Prompt – Starts Windows and loads the command prompt instead of the GUI interface. Last Known Good Configuration – Enables a user to load the configurations settings of Windows that was used the la ...
... identically to Safe Mode and also loads the drivers for network components. Safe Mode with Command Prompt – Starts Windows and loads the command prompt instead of the GUI interface. Last Known Good Configuration – Enables a user to load the configurations settings of Windows that was used the la ...