Introduction
... The architectures of both Figure 1-2a and b are generally referred to as multiprocessors. They provide multiple CPUs and possibly multiple main memory modules, but other hardware components are shared. Thus the system can still be viewed as a single computer. Figure 1-2c shows a different type of ar ...
... The architectures of both Figure 1-2a and b are generally referred to as multiprocessors. They provide multiple CPUs and possibly multiple main memory modules, but other hardware components are shared. Thus the system can still be viewed as a single computer. Figure 1-2c shows a different type of ar ...
Chapter 2: Operating-System Structures • Operating-System
... compiled, it must be loaded into memory to be executed. The system may provide loaders, linkage editors and debuggers. – Communications: Programs provide mechanism for creating virtual connections among processes, users, and computer systems, such as sending messages and transferring files. Operatin ...
... compiled, it must be loaded into memory to be executed. The system may provide loaders, linkage editors and debuggers. – Communications: Programs provide mechanism for creating virtual connections among processes, users, and computer systems, such as sending messages and transferring files. Operatin ...
WORD
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
Study Guide to Accompany Operating Systems Concepts essentials
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
The Styx Architecture for Distributed Systems
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
Unix File System
... BSD: Blocks and fragments. BSD uses blocks and a possible last “fragment” to assign data space for a file in the data area. Example: All the blocks of a file are of a large block size (such as 8K), except the last. The last block is an appropriate multiple of a smaller fragment size (i.e., 1024) to ...
... BSD: Blocks and fragments. BSD uses blocks and a possible last “fragment” to assign data space for a file in the data area. Example: All the blocks of a file are of a large block size (such as 8K), except the last. The last block is an appropriate multiple of a smaller fragment size (i.e., 1024) to ...
Windows File System
... perform more primitive functions • It provides services to the next higher layer. • Changes in one layer should not require changes in other layers ...
... perform more primitive functions • It provides services to the next higher layer. • Changes in one layer should not require changes in other layers ...
1.1 What is an Operating System?
... the processors share memory and a clock. In these multiprocessor systems, communication usually take place through the shared memory. In a loosely coupled system, the processors do not share memory or a clock. Instead, each processor has its own local memory. The processor communicate with one anoth ...
... the processors share memory and a clock. In these multiprocessor systems, communication usually take place through the shared memory. In a loosely coupled system, the processors do not share memory or a clock. Instead, each processor has its own local memory. The processor communicate with one anoth ...
Formatting and Partitioning Hard Drives, and DOS
... designed for the IBM Personal Computer DOS is a collection of programs and commands used to control the overall computer operation in a disk-based system Three sections make up DOS: Boot files File management files Utility files A simple operating system 16- bit operating system does not s ...
... designed for the IBM Personal Computer DOS is a collection of programs and commands used to control the overall computer operation in a disk-based system Three sections make up DOS: Boot files File management files Utility files A simple operating system 16- bit operating system does not s ...
CHAPTER 1: Computer Systems
... All rights reserved. Reproduction or translation of this work beyond that permitted in section 117 of the 1976 United States Copyright Act without express permission of the copyright owner is unlawful. Request for further information should be addressed to the Permissions Department, John Wiley & So ...
... All rights reserved. Reproduction or translation of this work beyond that permitted in section 117 of the 1976 United States Copyright Act without express permission of the copyright owner is unlawful. Request for further information should be addressed to the Permissions Department, John Wiley & So ...
CHAPTER 1: Computer Systems
... All rights reserved. Reproduction or translation of this work beyond that permitted in section 117 of the 1976 United States Copyright Act without express permission of the copyright owner is unlawful. Request for further information should be addressed to the Permissions Department, John Wiley & So ...
... All rights reserved. Reproduction or translation of this work beyond that permitted in section 117 of the 1976 United States Copyright Act without express permission of the copyright owner is unlawful. Request for further information should be addressed to the Permissions Department, John Wiley & So ...
Core System Services
... be used, they are all listed in inetd’s configuration file, /etc/inetd.conf. On their behalf, inetd listens for incoming connections. Thus, only a single process needs to be in memory. ...
... be used, they are all listed in inetd’s configuration file, /etc/inetd.conf. On their behalf, inetd listens for incoming connections. Thus, only a single process needs to be in memory. ...
ppt - Purdue University :: Computer Science
... that sits in between the hardware and the user programs. ...
... that sits in between the hardware and the user programs. ...
Computing Systems Division
... things for it? User programs do not run in isolation but run on system with other programs System resources need to be shared between these programs and this requires operating system to ensure that one program cannot cause other programs to execute incorrectly. ...
... things for it? User programs do not run in isolation but run on system with other programs System resources need to be shared between these programs and this requires operating system to ensure that one program cannot cause other programs to execute incorrectly. ...
Chapter3 - Computer Strcuture
... device that issued the interrupt so that the device can remove its interrupt signal. Interrupt architecture saves the address of the interrupted instruction (and values of other registers). Interrupt transfers control to the interrupt service routine (Interrupt Handler), generally through the in ...
... device that issued the interrupt so that the device can remove its interrupt signal. Interrupt architecture saves the address of the interrupted instruction (and values of other registers). Interrupt transfers control to the interrupt service routine (Interrupt Handler), generally through the in ...
The Evolution of the Unix Time
... just replaced its standard input or output with the appropriate file. Crucial to subsequent development was the implementation of the shell as a user-level program stored in a file, rather than a part of the operating system. The structure of this process control scheme, with one process per termina ...
... just replaced its standard input or output with the appropriate file. Crucial to subsequent development was the implementation of the shell as a user-level program stored in a file, rather than a part of the operating system. The structure of this process control scheme, with one process per termina ...
The Evolution of the Unix Time-sharing System
... The implementation of redirection was quite straightforward; in step 3) above the shell just replaced its standard input or output with the appropriate file. Crucial to subsequent development was the implementation of the shell as a user-level program stored in a file, rather than a part of the oper ...
... The implementation of redirection was quite straightforward; in step 3) above the shell just replaced its standard input or output with the appropriate file. Crucial to subsequent development was the implementation of the shell as a user-level program stored in a file, rather than a part of the oper ...
Linux Kernel—File Systems
... Does not point to an inode; It is possible to create cross-file systems symbolic links Point to any type of file, even on nonexistent files. ...
... Does not point to an inode; It is possible to create cross-file systems symbolic links Point to any type of file, even on nonexistent files. ...
MS-DOS-&-PC-DOS-by-Lindsey-Buranych-Alan-Crouch
... – This is done by simply adding more links to the file's chain in the FAT. – Note however, that each cluster can be taken only by one file, and so if a 1KB file resides in a 32KB cluster, 31KB are wasted. ...
... – This is done by simply adding more links to the file's chain in the FAT. – Note however, that each cluster can be taken only by one file, and so if a 1KB file resides in a 32KB cluster, 31KB are wasted. ...
Allowable Process States - Universitas Pendidikan Indonesia
... – This is done by simply adding more links to the file's chain in the FAT. – Note however, that each cluster can be taken only by one file, and so if a 1KB file resides in a 32KB cluster, 31KB are wasted. ...
... – This is done by simply adding more links to the file's chain in the FAT. – Note however, that each cluster can be taken only by one file, and so if a 1KB file resides in a 32KB cluster, 31KB are wasted. ...
file
... • Files with direct access are conceptually divided into numbered logical records • Direct access allows the user to set the file pointer to any particular record by specifying the record number ...
... • Files with direct access are conceptually divided into numbered logical records • Direct access allows the user to set the file pointer to any particular record by specifying the record number ...
