cs320ch3powerpoint
... – In Unix it’s possible to issue an exec() type system call which has the effect of wiping out the current program and replacing it with another – It’s also possible for the parent process to issue a wait() command which has the effect of suspending the parent’s execution until the most recently spa ...
... – In Unix it’s possible to issue an exec() type system call which has the effect of wiping out the current program and replacing it with another – It’s also possible for the parent process to issue a wait() command which has the effect of suspending the parent’s execution until the most recently spa ...
Introduction
... reports its value to the server. Then the query node sends a message to ask the maximum value to the server, which will answer to the query. ...
... reports its value to the server. Then the query node sends a message to ask the maximum value to the server, which will answer to the query. ...
Distributed systems
... computers that appear to users as a single computer A system in which hardware or software components located at networked computers communicate and coordinate their ...
... computers that appear to users as a single computer A system in which hardware or software components located at networked computers communicate and coordinate their ...
File Systems_PPT_ch04
... • Support up to four partitions per hard drive. – Four primary partitions or three primary and one extended partition – Extended partition may be further divided into logical drives » Each of these logical drives can hold an individual file system. ...
... • Support up to four partitions per hard drive. – Four primary partitions or three primary and one extended partition – Extended partition may be further divided into logical drives » Each of these logical drives can hold an individual file system. ...
Identify and describe the functions of different operating systems
... Multi user — Multi user systems allow more than one person to use the operating system resources simultaneously. Obviously, two or more people would not want to physically operate the same computer at the same time, so the ability to do this is provided by network operating systems. A network operat ...
... Multi user — Multi user systems allow more than one person to use the operating system resources simultaneously. Obviously, two or more people would not want to physically operate the same computer at the same time, so the ability to do this is provided by network operating systems. A network operat ...
Module 3: Operating
... virtual line printers A normal user time-sharing terminal serves as the virtual machine ...
... virtual line printers A normal user time-sharing terminal serves as the virtual machine ...
ch2
... 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 ...
Embedded Linux Design and Programming
... Executing program code. Set of resources (i.e. open files). Internal kernel data (i.e. struct task_struct). Address space. One or more threads of execution. Data section (i.e. global variables). ...
... Executing program code. Set of resources (i.e. open files). Internal kernel data (i.e. struct task_struct). Address space. One or more threads of execution. Data section (i.e. global variables). ...
Handout
... necessary because user-level programs cannot invoke any of the routines that are part of the kernel. For example the functions print, printInt, nl, etc. have been duplicated at the user level so the userlevel program has the ability to print. [Note that, at this point, all printing is done by cheati ...
... necessary because user-level programs cannot invoke any of the routines that are part of the kernel. For example the functions print, printInt, nl, etc. have been duplicated at the user level so the userlevel program has the ability to print. [Note that, at this point, all printing is done by cheati ...
Operating Systems (Notes to prepare in 1 night before Exam)
... • Get device attributes, set device attributes Communication • Create, delete communication connections • Send, receive messages • Transfer status information • Attach or detach remote devices ...
... • Get device attributes, set device attributes Communication • Create, delete communication connections • Send, receive messages • Transfer status information • Attach or detach remote devices ...
Operating-System Structures
... System goals – OS should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient ...
... System goals – OS should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient ...
Abstract- This paper presents an introduction to the technology of
... There are all kinds of clusters, from disksharing clusters to full-redundant faulttolerating operating systems and hardware. Thus, the word cluster denotes a whole family of technologies under a common name. To give a general idea of the types of clusters available, consider the following ...
... There are all kinds of clusters, from disksharing clusters to full-redundant faulttolerating operating systems and hardware. Thus, the word cluster denotes a whole family of technologies under a common name. To give a general idea of the types of clusters available, consider the following ...
Slide 1
... Deadlock • Permanent blocking of a set of processes that either compete for system resources or communicate with each other • No efficient solution • Involve conflicting needs for resources by two or more processes ...
... Deadlock • Permanent blocking of a set of processes that either compete for system resources or communicate with each other • No efficient solution • Involve conflicting needs for resources by two or more processes ...
Lecture 1: Course Introduction and Overview
... operating system” is good approximation – But varies wildly ...
... operating system” is good approximation – But varies wildly ...
Operating Systems, 082
... Running user commands User types: ‘grep some_word file_name’ Shell parses the command, inserts the strings grep, some_word, file_name into argv and their number to argc Next, the shell uses fork() to create a process (same user ID) Now, it takes the executable name grep and the arguments, a ...
... Running user commands User types: ‘grep some_word file_name’ Shell parses the command, inserts the strings grep, some_word, file_name into argv and their number to argc Next, the shell uses fork() to create a process (same user ID) Now, it takes the executable name grep and the arguments, a ...
Introduction
... Running user commands User types: ‘grep some_word file_name’ Shell parses the command, inserts the strings grep, some_word, file_name into argv and their number to argc Next, the shell uses fork() to create a process (same user ID) Now, it takes the executable name grep and the arguments, a ...
... Running user commands User types: ‘grep some_word file_name’ Shell parses the command, inserts the strings grep, some_word, file_name into argv and their number to argc Next, the shell uses fork() to create a process (same user ID) Now, it takes the executable name grep and the arguments, a ...
Ch01 - Min-Shiang Hwang
... 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 ...
Chapter 13: I/O Systems Silberschatz, Galvin and Gagne ©2013! Edition!
... can be used for efficiency in some cases" ...
... can be used for efficiency in some cases" ...
Structures - IDA.LiU.se - Linköpings universitet
... § OS functions supporting the efficient operation of the system itself: • Resource allocation – When multiple users or multiple jobs are running concurrently, resources must be allocated to each of them > Types of resources: CPU time, main memory, file storage, I/O dev. ...
... § OS functions supporting the efficient operation of the system itself: • Resource allocation – When multiple users or multiple jobs are running concurrently, resources must be allocated to each of them > Types of resources: CPU time, main memory, file storage, I/O dev. ...
ch1
... Many systems now servers, responding to requests generated by clients Compute-server provides an interface to client to request ...
... Many systems now servers, responding to requests generated by clients Compute-server provides an interface to client to request ...
ppt
... Many systems now servers, responding to requests generated by clients Compute-server provides an interface to client to request ...
... Many systems now servers, responding to requests generated by clients Compute-server provides an interface to client to request ...
PPT - CS
... File • Sequence of bytes, with no structure as far as the operating system is concerned. The only operations are to read and write bytes. • Interpretation of the data is left to the application using it. • File descriptor – a handle to a file that the OS provides the user so that it can use the fil ...
... File • Sequence of bytes, with no structure as far as the operating system is concerned. The only operations are to read and write bytes. • Interpretation of the data is left to the application using it. • File descriptor – a handle to a file that the OS provides the user so that it can use the fil ...
Plan 9 from Bell Labs
.png?width=300)
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.