CS 519: Operating System Theory
... instruction which cannot be executed Modify fetch-decode-execute loop to jump to a known location in the OS when an exception happens Different errors jump to different places in the OS (are "vectored" in OS speak) ...
... instruction which cannot be executed Modify fetch-decode-execute loop to jump to a known location in the OS when an exception happens Different errors jump to different places in the OS (are "vectored" in OS speak) ...
11. Kernel Design
... Process Management and Scheduling Operating System Trends Alternative Operating System Designs ...
... Process Management and Scheduling Operating System Trends Alternative Operating System Designs ...
Processes and threads
... It needs the processor to run. But it doesn't run all the time. So it needs information about what it is up to stored somewhere. Operating Systems ...
... It needs the processor to run. But it doesn't run all the time. So it needs information about what it is up to stored somewhere. Operating Systems ...
CS 519 -- Operating Systems -
... (process image and process control structure) except for the identification and scheduling state Parent and child processes run in two different address spaces by default no memory sharing Process creation is expensive because of this copying CS 519 ...
... (process image and process control structure) except for the identification and scheduling state Parent and child processes run in two different address spaces by default no memory sharing Process creation is expensive because of this copying CS 519 ...
PPTX - Duke Computer Science
... The open process architecture Processes debuted, circa 1965, as a recognized operating system abstraction in Multics [48]....Today, this architecture—which we call the open process architecture—is nearly universal. Although aspects of this architecture, such as dynamic code loading and shared memor ...
... The open process architecture Processes debuted, circa 1965, as a recognized operating system abstraction in Multics [48]....Today, this architecture—which we call the open process architecture—is nearly universal. Although aspects of this architecture, such as dynamic code loading and shared memor ...
Computers and Operating Systems - Ms. Wade`s Page
... To be computer literate means that you can use today’s computers efficiently to enhance your life and the lives of those around you. Computer literacy also means you understand a wide range of information about current technology and how it is used to solve problems. A digital divide is an economic ...
... To be computer literate means that you can use today’s computers efficiently to enhance your life and the lives of those around you. Computer literacy also means you understand a wide range of information about current technology and how it is used to solve problems. A digital divide is an economic ...
Operating System Support for MP & DSM Based Communication
... – Combines specialized libraries and server processes with enhancement to the kernel – Enhancement: scheduling and communication kernel modulesGLUnix to provide network wide process, file and VM management – Parallelism management service: process initialisation on any cluster computer, support semi ...
... – Combines specialized libraries and server processes with enhancement to the kernel – Enhancement: scheduling and communication kernel modulesGLUnix to provide network wide process, file and VM management – Parallelism management service: process initialisation on any cluster computer, support semi ...
No Slide Title
... recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash. The log is stored in the third metadata file at the beginning of the ...
... recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash. The log is stored in the third metadata file at the beginning of the ...
ch22
... recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash The log is stored in the third metadata file at the beginning of the ...
... recovered after a crash, just that the file system data structures (the metadata files) are undamaged and reflect some consistent state prior to the crash The log is stored in the third metadata file at the beginning of the ...
slides
... • Once a user has logged in the system must decide which actions he can and cannot perform. – Examples: • Bob may be allowed to read files that Alice cannot. • Alice may be permitted to use a printer that Bob cannot. ...
... • Once a user has logged in the system must decide which actions he can and cannot perform. – Examples: • Bob may be allowed to read files that Alice cannot. • Alice may be permitted to use a printer that Bob cannot. ...
PPT - LSU CCT - Louisiana State University
... • Some operating systems, may introduce an additional, intermediate level of scheduling: medium-term scheduler which remove process from memory and reintroduce it into memory at some later time and its execution can be continued where it left off. This scheme is called ...
... • Some operating systems, may introduce an additional, intermediate level of scheduling: medium-term scheduler which remove process from memory and reintroduce it into memory at some later time and its execution can be continued where it left off. This scheme is called ...
Slide 1
... 4 Android Android is a mobile operating system that is a popular platform for tablet computers, smartphones, and ebook readers ...
... 4 Android Android is a mobile operating system that is a popular platform for tablet computers, smartphones, and ebook readers ...
CS 5204 Operating Systems Fall 2005
... the hardware is based on the assumption that it is possible both to define abstractions that are appropriate for all areas and to implement them to perform efficiently in all situations. We believe that the fallacy of this quixotic goal is self-evident, and that the OS problems of the last two decad ...
... the hardware is based on the assumption that it is possible both to define abstractions that are appropriate for all areas and to implement them to perform efficiently in all situations. We believe that the fallacy of this quixotic goal is self-evident, and that the OS problems of the last two decad ...
Chapter 2
... E.g., Solaris: thread creation about 30x faster than heavyweight process creation; context switch about 5x faster with thread ...
... E.g., Solaris: thread creation about 30x faster than heavyweight process creation; context switch about 5x faster with thread ...
UNIX Operating System
... scanners faster and more flexibly than previous interfaces. Developed at Apple Computer and still used in the Macintosh, the present set of SCSIs are parallel interfaces. SCSI ports continue to be built into many personal computers today and are supported by all major operating systems. ...
... scanners faster and more flexibly than previous interfaces. Developed at Apple Computer and still used in the Macintosh, the present set of SCSIs are parallel interfaces. SCSI ports continue to be built into many personal computers today and are supported by all major operating systems. ...
Notes
... System Calls • System calls provide the interface between a running program and the operating system. – For example – open input file, create output file, print message to console, terminate with error or normally – Generally available as routines written in C and C++ – Certain low-level tasks (dir ...
... System Calls • System calls provide the interface between a running program and the operating system. – For example – open input file, create output file, print message to console, terminate with error or normally – Generally available as routines written in C and C++ – Certain low-level tasks (dir ...
Operating Systems
... • Microkernel implementation sometimes tricky: need to worry about concurrency and synchronisation. • Microkernels often end up with redundant copies of OS data structures. Hence today most common operating systems blur the distinction between kernel and microkernel. • e.g. linux is a “kernel”, but ...
... • Microkernel implementation sometimes tricky: need to worry about concurrency and synchronisation. • Microkernels often end up with redundant copies of OS data structures. Hence today most common operating systems blur the distinction between kernel and microkernel. • e.g. linux is a “kernel”, but ...
Complete computer system simulation: the SimOS approach
... example, a page fault). An operating system also assumes slapping over the less interesting parts. The ability to the existence of a set of 110devices including a periodic select the right simulator for the job is very useful. For interrupt timer that interrupts the CPU at regular interexample, most ...
... example, a page fault). An operating system also assumes slapping over the less interesting parts. The ability to the existence of a set of 110devices including a periodic select the right simulator for the job is very useful. For interrupt timer that interrupts the CPU at regular interexample, most ...