Modern Operating Systems Modern Operating Systems
... • Microkernel architecture – Assigns only a few essential functions to the kernel • Address spaces • Interprocess communication (IPC) • Basic scheduling ...
... • Microkernel architecture – Assigns only a few essential functions to the kernel • Address spaces • Interprocess communication (IPC) • Basic scheduling ...
1. Operating system
... e.g. no matter how many cylinders or what sector size the file system looks the same on all disks ...
... e.g. no matter how many cylinders or what sector size the file system looks the same on all disks ...
Evolution of Operating System
... o without time slicing, a computer spends most of its time waiting for peripheral devices or users o A collection of tasks can be completed in less time with time-sharing than when completed sequentially ...
... o without time slicing, a computer spends most of its time waiting for peripheral devices or users o A collection of tasks can be completed in less time with time-sharing than when completed sequentially ...
Operating systems
... the course The acquisition of basic knowledge of operating systems and work in them. Knowledge of modern operating systems. Understanding the key differences between objectoriented, modular, layered or systems based on a microkernel. Knowledge of the mechanisms of competitive execution and the probl ...
... the course The acquisition of basic knowledge of operating systems and work in them. Knowledge of modern operating systems. Understanding the key differences between objectoriented, modular, layered or systems based on a microkernel. Knowledge of the mechanisms of competitive execution and the probl ...
COMS W1004 Introduction to Computer Science
... In order to port to other platforms, Thompson created a high-level programming language called B Dennis Ritchie created a better implementation called C Thompson and Ritchie rewrote UNIX in C ...
... In order to port to other platforms, Thompson created a high-level programming language called B Dennis Ritchie created a better implementation called C Thompson and Ritchie rewrote UNIX in C ...
CS 3013 Operating Systems
... – ex: debugger needs gui, program, perf monitor… – especially when blocking for I/O! Single ...
... – ex: debugger needs gui, program, perf monitor… – especially when blocking for I/O! Single ...
IO Systems - monismith.info
... • Ex: on failed "read()" retry "read()" or on failed "send()" issue "resend()" • System calls typically return an error bit • UNIX/Linux calls return "errno" which may be one of several hundred error codes • Some HW such as SCSI (pronounced "scuzzy") may provide very detailed information such as a " ...
... • Ex: on failed "read()" retry "read()" or on failed "send()" issue "resend()" • System calls typically return an error bit • UNIX/Linux calls return "errno" which may be one of several hundred error codes • Some HW such as SCSI (pronounced "scuzzy") may provide very detailed information such as a " ...
General overview of the System
... • Operating system is a software that enables all the programs we use. • Examples – Windows, Linux, Unix, etc. ...
... • Operating system is a software that enables all the programs we use. • Examples – Windows, Linux, Unix, etc. ...
Chapter 2
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
PDF
... • Goal: create a comfortable environment to explore machine and operating system • Other goals – Programmer convenience – Elegance of design – Self-maintaining ...
... • Goal: create a comfortable environment to explore machine and operating system • Other goals – Programmer convenience – Elegance of design – Self-maintaining ...
now
... system call and any return values The caller need know nothing about how the system call is implemented ◦ Just needs to obey API and understand what OS will do as a result call ◦ Most details of OS interface hidden from programmer by API Managed by run-time support library (set of functions built ...
... system call and any return values The caller need know nothing about how the system call is implemented ◦ Just needs to obey API and understand what OS will do as a result call ◦ Most details of OS interface hidden from programmer by API Managed by run-time support library (set of functions built ...
What is an operating system?
... • For most commands, the shell forks and the child execs the command associated with the name, treating the • remaining words on the command line as parameters to the command • Allows for three type of commands ...
... • For most commands, the shell forks and the child execs the command associated with the name, treating the • remaining words on the command line as parameters to the command • Allows for three type of commands ...
Monolithic, Mikrokernel and Exokernel
... abstractions than the typical Unix primitives. In addition to the new mechanisms, providing an API compatible with Unix or another conventional operating system was a sine qua non; hence implementing Unix on top of the new systems was a natural consequence. Therefore, the microkernel idea became wid ...
... abstractions than the typical Unix primitives. In addition to the new mechanisms, providing an API compatible with Unix or another conventional operating system was a sine qua non; hence implementing Unix on top of the new systems was a natural consequence. Therefore, the microkernel idea became wid ...
Chapter 2: OS Structures
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
PPTX
... – Mount replaces a leaf of the hierarchy tree (the ordinary file) by a whole new subtree (the hierarchy stored on the removable volume) – After mount, virtually no distinction between files on ...
... – Mount replaces a leaf of the hierarchy tree (the ordinary file) by a whole new subtree (the hierarchy stored on the removable volume) – After mount, virtually no distinction between files on ...
PPTX
... – Mount replaces a leaf of the hierarchy tree (the ordinary file) by a whole new subtree (the hierarchy stored on the removable volume) – After mount, virtually no distinction between files on ...
... – Mount replaces a leaf of the hierarchy tree (the ordinary file) by a whole new subtree (the hierarchy stored on the removable volume) – After mount, virtually no distinction between files on ...
lecture33-dec15
... – Caching and buffering in RAM for I/O devices – Sharing memory • Memory mapping, CoW ...
... – Caching and buffering in RAM for I/O devices – Sharing memory • Memory mapping, CoW ...
Document
... This course involves study of concepts and components of general purpose operating systems. These include the study of processes and process synchronization, multithreaded applications, deadlocks, memory management, and file systems. UNIX and Windows NT are general purpose operating systems used as ...
... This course involves study of concepts and components of general purpose operating systems. These include the study of processes and process synchronization, multithreaded applications, deadlocks, memory management, and file systems. UNIX and Windows NT are general purpose operating systems used as ...
Slides About Systems - Duke Database Devils
... Large, long-lived software systems are like buildings. They are built by workers using standard design patterns. They depend on some underlying infrastructure. But they can evolve and are not limited by the laws of physics. ...
... Large, long-lived software systems are like buildings. They are built by workers using standard design patterns. They depend on some underlying infrastructure. But they can evolve and are not limited by the laws of physics. ...
The Mach System Abraham Silberschatz, Peter Baer Galvin, Greg
... Blends memory and inter-process communication features Each server module contained in its own address space called Task Server modules support parallelism ...
... Blends memory and inter-process communication features Each server module contained in its own address space called Task Server modules support parallelism ...