process management commands
... Four main advantages of threads are: 1. Responsiveness: Multithreading an interactive application may allow a program to continue running even if part of it is blocked or is performing a lengthy operation, thereby increasing responsiveness to the user. 2. Resource sharing: By default, threads share ...
... Four main advantages of threads are: 1. Responsiveness: Multithreading an interactive application may allow a program to continue running even if part of it is blocked or is performing a lengthy operation, thereby increasing responsiveness to the user. 2. Resource sharing: By default, threads share ...
Operating System
... merging adjacent disk read requests into a single request. – default: tells LILO which image to boot from by default, such as after the timeout period. This relates to a label of one of the images in the lilo.conf file. If not specified LILO will boot the first image in the file. – image: specifies ...
... merging adjacent disk read requests into a single request. – default: tells LILO which image to boot from by default, such as after the timeout period. This relates to a label of one of the images in the lilo.conf file. If not specified LILO will boot the first image in the file. – image: specifies ...
Slides
... make sees that file1.o depends on the files file1.cc and mydefs.h. Now make looks to see if either of these files are listed as targets since they aren't, it executes the commands given in file1.o's rule and compiles file1.cc to get the object file. make looks at the targets file2.o and file3.o ...
... make sees that file1.o depends on the files file1.cc and mydefs.h. Now make looks to see if either of these files are listed as targets since they aren't, it executes the commands given in file1.o's rule and compiles file1.cc to get the object file. make looks at the targets file2.o and file3.o ...
Ch_01
... results of the next transaction may be unpredictable. Response time needs to be short (seconds) since the user submits and waits for the result. c. Time sharing. This systems uses CPU scheduling and multiprogramming to provide economical interactive use of a system. The CPU switches rapidly from one ...
... results of the next transaction may be unpredictable. Response time needs to be short (seconds) since the user submits and waits for the result. c. Time sharing. This systems uses CPU scheduling and multiprogramming to provide economical interactive use of a system. The CPU switches rapidly from one ...
I/O Management and Disk Scheduling (Chapter 10)
... • Complexity of control: A printer requires a relatively simple control interface. A disk is much more complex. • Unit of transfer: Data may be transferred as a stream of bytes or characters or in large blocks. • Data representation: Different data-encoding schemes are used by different devices, inc ...
... • Complexity of control: A printer requires a relatively simple control interface. A disk is much more complex. • Unit of transfer: Data may be transferred as a stream of bytes or characters or in large blocks. • Data representation: Different data-encoding schemes are used by different devices, inc ...
Working with Images - Faculty of Computer Science and
... – PC comes with Windows installed – Install LINUX in a dual-boot configuration ...
... – PC comes with Windows installed – Install LINUX in a dual-boot configuration ...
What is a Real-Time Operating Systems
... Real-Time Operating Systems Free the applications programmer from writing code for task scheduling and dispatching. Manage time-sharing of a processor for a number of different tasks and interrupt sources, while adhering to strict time constraints. Widely used in all kinds of applications both on P ...
... Real-Time Operating Systems Free the applications programmer from writing code for task scheduling and dispatching. Manage time-sharing of a processor for a number of different tasks and interrupt sources, while adhering to strict time constraints. Widely used in all kinds of applications both on P ...
Operating System Functions and History
... needs one or more regions of memory to hold its code and data. c) Another resource to be managed is the various IO devices. (1) One user at a time devices (e.g. the keyboard on a PC) (2) The file system (3) Network connections. 4. Another operating system task is providing support services needed by ...
... needs one or more regions of memory to hold its code and data. c) Another resource to be managed is the various IO devices. (1) One user at a time devices (e.g. the keyboard on a PC) (2) The file system (3) Network connections. 4. Another operating system task is providing support services needed by ...
Lecture 2
... tools rather write a new one. 4. Create the design first, then start with a small prototype and add features incrementally. ...
... tools rather write a new one. 4. Create the design first, then start with a small prototype and add features incrementally. ...
- jGyan.com
... • The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory). • A job swapped in and out of memory to the disk. • On-line communication between the user and the system is provided; when the operating system finishes the ...
... • The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory). • A job swapped in and out of memory to the disk. • On-line communication between the user and the system is provided; when the operating system finishes the ...
CSCI 3753 Operating Systems Spring 2005
... – assembler doesn’t generate absolute addresses, because • don’t know to what other object files you’ll be linked with • the binary executable could be loaded anywhere in RAM ...
... – assembler doesn’t generate absolute addresses, because • don’t know to what other object files you’ll be linked with • the binary executable could be loaded anywhere in RAM ...
Chapter 7 Deadlocks
... • The purpose of file management is to identify the concepts of file management and how to use it effectively. • Data should be organized in some convenient and efficient manner. In particular, users should be able to: – Put data into files – Find and use files that have previously been created ...
... • The purpose of file management is to identify the concepts of file management and how to use it effectively. • Data should be organized in some convenient and efficient manner. In particular, users should be able to: – Put data into files – Find and use files that have previously been created ...
Slide
... • A task created by the OS, running in a restricted virtual machine environment –a virtual CPU, virtual memory environment, interface to the OS via system calls • Sequential, instruction-at-a-time execution of a program. Operating system abstraction to represent what is needed to run a single, multi ...
... • A task created by the OS, running in a restricted virtual machine environment –a virtual CPU, virtual memory environment, interface to the OS via system calls • Sequential, instruction-at-a-time execution of a program. Operating system abstraction to represent what is needed to run a single, multi ...
process control block
... during process run time. The structure of a process in memory is shown in Figure 3.1. We emphasize that a program by itself is not a process; a program is a passive entity, such as a file containing a list of instructions stored on disk (often called an executable file), whereas a process is an acti ...
... during process run time. The structure of a process in memory is shown in Figure 3.1. We emphasize that a program by itself is not a process; a program is a passive entity, such as a file containing a list of instructions stored on disk (often called an executable file), whereas a process is an acti ...
lecture6
... the 1960sin the name of an operating system (i.e., DOS/360) for its System/360 computer. At that time the use of disks for storing the operating system and data was considered cutting edge technology. Until its acquisition of QDOS, Microsoft had been mainly a vendor of computer programming languages ...
... the 1960sin the name of an operating system (i.e., DOS/360) for its System/360 computer. At that time the use of disks for storing the operating system and data was considered cutting edge technology. Until its acquisition of QDOS, Microsoft had been mainly a vendor of computer programming languages ...
The Amoeba Distributed Operating System
... 1. Distribution: Connecting together many machines so that multiple independent users can work on different projects. The machines need not be of the same type, and may be spread around a building on a LAN. 2. Parallelism: Allowing individual jobs to use multiple CPUs easily. For example, a branch a ...
... 1. Distribution: Connecting together many machines so that multiple independent users can work on different projects. The machines need not be of the same type, and may be spread around a building on a LAN. 2. Parallelism: Allowing individual jobs to use multiple CPUs easily. For example, a branch a ...
Overview and History
... parent process create children processes, which, in turn create other processes, forming a tree of processes parent and children may share resources or not parent and children may execute concurrently, or parent may wait on child child may inherit the address space of the parent, or have a n ...
... parent process create children processes, which, in turn create other processes, forming a tree of processes parent and children may share resources or not parent and children may execute concurrently, or parent may wait on child child may inherit the address space of the parent, or have a n ...
Midterm Review
... With modularity, layers are selected such that each uses functions (operations) and services of only lower-level layers ...
... With modularity, layers are selected such that each uses functions (operations) and services of only lower-level layers ...
Operating System Objectives and functions-D2
... • Set up time: A single program, (job) could involve loading the compiler into memory, saving the compiled program (object program) and then loading and linking together the object program and common functions. – Each of these steps could involve mounting or dismounting tapes or setting up card deck ...
... • Set up time: A single program, (job) could involve loading the compiler into memory, saving the compiled program (object program) and then loading and linking together the object program and common functions. – Each of these steps could involve mounting or dismounting tapes or setting up card deck ...
Nachos Overview - Computer and Information Science | Brooklyn
... keep track of version history, releases, etc.), you may take advantage of some websites which provide free services for developing open-source projects, such as www.sourceforge.com, and savannah.nongnu.org. If you are not familiar with CVS, or simply do not want to try it, I am afraid the only optio ...
... keep track of version history, releases, etc.), you may take advantage of some websites which provide free services for developing open-source projects, such as www.sourceforge.com, and savannah.nongnu.org. If you are not familiar with CVS, or simply do not want to try it, I am afraid the only optio ...
Operating Systems
... runs most services - like networking, filesystem, etc. - in user space. microkernels can be more stable, but require additional design work. ...
... runs most services - like networking, filesystem, etc. - in user space. microkernels can be more stable, but require additional design work. ...
Operating System Concepts
... and entering the name of the executable file on the command line (as in prog. exe or a. out.) ...
... and entering the name of the executable file on the command line (as in prog. exe or a. out.) ...
Windows NT Operating System
... • Windows NT servers are called protected subsystem because each one resides in a separate process whose memory is protected from other processes by the NT executive’s virtual memory system. They communicate with each other by passing messages. • The NT executive is capable of supporting any number ...
... • Windows NT servers are called protected subsystem because each one resides in a separate process whose memory is protected from other processes by the NT executive’s virtual memory system. They communicate with each other by passing messages. • The NT executive is capable of supporting any number ...
PPT
... User app main program; calls kernel for services OS main program; calls user programs as subroutines ...
... User app main program; calls kernel for services OS main program; calls user programs as subroutines ...