System software - Information Technology
... • Protection is achieved by having the operating system to have full control over the resources of the system (processor, memory and I/O devices) • Virtual memory is one of the techniques used to achieve protection between programs – Each program operates as if it were the only program on the comput ...
... • Protection is achieved by having the operating system to have full control over the resources of the system (processor, memory and I/O devices) • Virtual memory is one of the techniques used to achieve protection between programs – Each program operates as if it were the only program on the comput ...
Module 3: Operating
... running program and the operating system. – Pass parameters in registers. – Store the parameters in a table in memory, and the table address is passed as a parameter in a register. – Push (store) the parameters onto the stack by the program, and pop off the stack by operating system. ...
... running program and the operating system. – Pass parameters in registers. – Store the parameters in a table in memory, and the table address is passed as a parameter in a register. – Push (store) the parameters onto the stack by the program, and pop off the stack by operating system. ...
CS 519 -- Operating Systems -
... location of each i-node i-node map blocks can also be scattered but a fixed checkpoint region on the disk identifies the location of all the i-node map blocks Usually i-node map blocks are cached in main memory most of the time, thus disk accesses for them are ...
... location of each i-node i-node map blocks can also be scattered but a fixed checkpoint region on the disk identifies the location of all the i-node map blocks Usually i-node map blocks are cached in main memory most of the time, thus disk accesses for them are ...
Chapter 6: Operating Systems: The Genie in the Computer
... Cache memory: Used when the speed of memory access is too slow - can’t keep up with the CPU’s needs (two types). 1. Disk cache - Saves the most frequently used parts of the program being run or executed in the RAM memory - Saving it from repeatedly retrieving it from the hard disk. 2. RAM disk - Foo ...
... Cache memory: Used when the speed of memory access is too slow - can’t keep up with the CPU’s needs (two types). 1. Disk cache - Saves the most frequently used parts of the program being run or executed in the RAM memory - Saving it from repeatedly retrieving it from the hard disk. 2. RAM disk - Foo ...
Operating Systems Overview - Physics, Computer Science and
... to hardware, OS must manage new hardware functionality. z OS starts to become a significant software system. z OS also starts to take up significant resources on its own. ...
... to hardware, OS must manage new hardware functionality. z OS starts to become a significant software system. z OS also starts to take up significant resources on its own. ...
Introduction
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
COS 318: Operating Systems Introduction Jaswinder Pal Singh
... User programs can deal with simpler, high-level concepts Hide complex and unreliable hardware Provide illusions like “sole application running” or “infinite memory” ...
... User programs can deal with simpler, high-level concepts Hide complex and unreliable hardware Provide illusions like “sole application running” or “infinite memory” ...
4 - Operating System Basics.ppt
... – Take up little space on disk – Run on inexpensive computers ...
... – Take up little space on disk – Run on inexpensive computers ...
Operating System
... File-system manipulation – program capability to read, write, create, and delete files. Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detecti ...
... File-system manipulation – program capability to read, write, create, and delete files. Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detecti ...
Chapter 9 Linux Installation Procedures
... services running on them. If the system is going to be a workstation, Web server, or mail server the appropriate services will need to be installed on the system. • Select and configure the system to use the proper boot loader • Linux uses one of two programs: – Linux Loader (LILO) or ...
... services running on them. If the system is going to be a workstation, Web server, or mail server the appropriate services will need to be installed on the system. • Select and configure the system to use the proper boot loader • Linux uses one of two programs: – Linux Loader (LILO) or ...
Lecture 1: What is An OS Operating Systems (A) (Honor Track)
... How different/similar do you think these OSes are? ...
... How different/similar do you think these OSes are? ...
Study_Guide
... What is the positional value of the 1 in the binary number 100000 ? What is the largest number of items that can be represented with four hexadecimal digits? What is the positional value of the A in the hexadecimal number BEA? What numeric value in base 10 does the binary number 10000001 rep sent? W ...
... What is the positional value of the 1 in the binary number 100000 ? What is the largest number of items that can be represented with four hexadecimal digits? What is the positional value of the A in the hexadecimal number BEA? What numeric value in base 10 does the binary number 10000001 rep sent? W ...
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 ...
Intro. to Computer - web page for staff
... A multiuser, multitasking operating system originally developed by Ken Thompson and Dennis Ritchie at AT&T Bell Laboratories in 1969 for use on minicomputers.UNIX exists in various forms and implementations; among these are version developed at the University of California at Berkeley and versions r ...
... A multiuser, multitasking operating system originally developed by Ken Thompson and Dennis Ritchie at AT&T Bell Laboratories in 1969 for use on minicomputers.UNIX exists in various forms and implementations; among these are version developed at the University of California at Berkeley and versions r ...
Chapter 6 Introduction to Network Operating Systems
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
Chapter 6 Introduction to Network Operating Systems
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
Commercial Real-Time Operating Systems – An
... If it does not complete the processing, it sets an asynchronous trap to the kernel Later, when kernel can respond to the software interrupt, it schedules an instance of the kernel thread to complete the interrupt processing ...
... If it does not complete the processing, it sets an asynchronous trap to the kernel Later, when kernel can respond to the software interrupt, it schedules an instance of the kernel thread to complete the interrupt processing ...
Chapter 6 Introduction to Network Operating Systems
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
... • Many networks now include more than one server type, and knowing how to get these diverse systems to interoperate is an important skill for a network administrator. • Operating systems on the network have their own language. • Different NOS vendors use the same terms in different ways. ...
Document
... This course is devoted to to provides a clear description of the main concepts of operating systems and algorithms. This course will introduce a wide range of topics that is not tied to one specific type of operating system. Particular emphasis will be given to the following topics: Operating System ...
... This course is devoted to to provides a clear description of the main concepts of operating systems and algorithms. This course will introduce a wide range of topics that is not tied to one specific type of operating system. Particular emphasis will be given to the following topics: Operating System ...
Chapter 3: Operating-System Structures • System Components
... running program and the operating system. – Pass parameters in registers. – Store the parameters in a table in memory, and the table address is passed as a parameter in a register. – Push (store) the parameters onto the stack by the program, and pop off the stack by operating system. ...
... running program and the operating system. – Pass parameters in registers. – Store the parameters in a table in memory, and the table address is passed as a parameter in a register. – Push (store) the parameters onto the stack by the program, and pop off the stack by operating system. ...
Operating System Structures
... A virtual machine provides multiprogramming only by providing exact virtual copies of the bare hardware . A virtual machine provides an interface identical to the underlying bare hardware. The operating system creates the illusion of multiple processes, each executing on its own processor with ...
... A virtual machine provides multiprogramming only by providing exact virtual copies of the bare hardware . A virtual machine provides an interface identical to the underlying bare hardware. The operating system creates the illusion of multiple processes, each executing on its own processor with ...
Hassan Al-Makso`s presentation on Making OS Reliable and Secure
... Each system component has metadata describing its dependencies, exports, resources, and behavior. Verification is a three-step process: The compiler checks type safety, object ownership, channel protocols, and so on. The compiler generates Microsoft Intermediate Language, a portable JVM-like ...
... Each system component has metadata describing its dependencies, exports, resources, and behavior. Verification is a three-step process: The compiler checks type safety, object ownership, channel protocols, and so on. The compiler generates Microsoft Intermediate Language, a portable JVM-like ...
Chapter 1 Introduction
... But others can be running in the background. [Section 1.5] 12. Examples would be number-crunching super computers. In general, any situation where it is not economically feasible to provide one individual workstation with seldom used, expensive, hardware. [Section 1.5] 13. There are an increased num ...
... But others can be running in the background. [Section 1.5] 12. Examples would be number-crunching super computers. In general, any situation where it is not economically feasible to provide one individual workstation with seldom used, expensive, hardware. [Section 1.5] 13. There are an increased num ...
A1A_CptrArch
... Symmetric Multiprocessor OS • A multiprocessor OS must provide all the functionality of a multiprogramming system for multiple processors, not just one. • Key design issues: (not all are unique to ...
... Symmetric Multiprocessor OS • A multiprocessor OS must provide all the functionality of a multiprogramming system for multiple processors, not just one. • Key design issues: (not all are unique to ...