virtual machine
... • The resources of the physical computer are shared to create the virtual machines – CPU scheduling can create the appearance that users have their own processor – Spooling and a file system can provide virtual card readers and virtual line printers – A normal user time-sharing terminal serves as th ...
... • The resources of the physical computer are shared to create the virtual machines – CPU scheduling can create the appearance that users have their own processor – Spooling and a file system can provide virtual card readers and virtual line printers – A normal user time-sharing terminal serves as th ...
01-intro
... This course slide is based on similar course in University of Illinois at Urbana-Champaign by Tarek Abdelzaher and Lawrence Angrave ...
... This course slide is based on similar course in University of Illinois at Urbana-Champaign by Tarek Abdelzaher and Lawrence Angrave ...
ppt
... • Header: destination port name, reply port name, message length • In-line data: simple types, port rights • Out-of-line data: pointers – Via virtual-memory remapping – Copy-on-write ...
... • Header: destination port name, reply port name, message length • In-line data: simple types, port rights • Out-of-line data: pointers – Via virtual-memory remapping – Copy-on-write ...
Overview and History
... Linux’s physical memory-management system deals with allocating and freeing pages, groups of pages, and small blocks of memory has additional mechanisms for handling virtual memory, memory mapped into the address space of running processes ...
... Linux’s physical memory-management system deals with allocating and freeing pages, groups of pages, and small blocks of memory has additional mechanisms for handling virtual memory, memory mapped into the address space of running processes ...
OS imp structures
... • MS-DOS – written to provide the most functionality in the least space – Not divided into modules – Interfaces and levels of functionality not well separated ...
... • MS-DOS – written to provide the most functionality in the least space – Not divided into modules – Interfaces and levels of functionality not well separated ...
Operating System Structures
... the code as cleverly as possible, you are, by definition, not smart enough to debug it.” ...
... the code as cleverly as possible, you are, by definition, not smart enough to debug it.” ...
Overview of Operating Systems
... how OS design can impact program performance Understand concurrency, and learn of the problems (such as race conditions) and tools used to solve them (such as semaphores) Learn major features of the POSIX API ...
... how OS design can impact program performance Understand concurrency, and learn of the problems (such as race conditions) and tools used to solve them (such as semaphores) Learn major features of the POSIX API ...
Answers
... Note: At this point, these exercises do not have to be turned in. The point of the exercises is to help you reflect on and better understand the course material. We will have an in-class discussion on these exercises on 1/23. 1. Who are the two main programmers that wrote UNIX, and what were their r ...
... Note: At this point, these exercises do not have to be turned in. The point of the exercises is to help you reflect on and better understand the course material. We will have an in-class discussion on these exercises on 1/23. 1. Who are the two main programmers that wrote UNIX, and what were their r ...
ppt
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
Ceng 334 - Operating Systems
... An interface between the user and the hardware (provides a virtual machine) ...
... An interface between the user and the hardware (provides a virtual machine) ...
Mach: A System Software Kernel Abstract
... • binary compatibility with non-Mach OS environments, ...
... • binary compatibility with non-Mach OS environments, ...
Operating Systems CMPSC 473
... • OS competes with the processes for resources – E.g., OS uses disk to swap ...
... • OS competes with the processes for resources – E.g., OS uses disk to swap ...
ppt
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
Overview and History
... Linux’s physical memory-management system deals with allocating and freeing pages, groups of pages, and small blocks of memory has additional mechanisms for handling virtual memory, memory mapped into the address space of running processes ...
... Linux’s physical memory-management system deals with allocating and freeing pages, groups of pages, and small blocks of memory has additional mechanisms for handling virtual memory, memory mapped into the address space of running processes ...
Unix – Linux
... and users of a computer. – Requires a file system for organizing files – Must maintain its viability to prevent other programs, hardware, users, etc, from impeding its operation. Unix and its variants will accomplish the above. ...
... and users of a computer. – Requires a file system for organizing files – Must maintain its viability to prevent other programs, hardware, users, etc, from impeding its operation. Unix and its variants will accomplish the above. ...
ppt
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
... • Programmer time wasted! “Sigh. In the good old days….” – Time-sharing – Multics (sorta) – New problems ...
ppt
... Provides access to stable storage at the level of disk blocks Determine the access rights to a given disk block as efficiently as possible Prevent a malicious user from claiming another user’s disk blocks as part of her own files ...
... Provides access to stable storage at the level of disk blocks Determine the access rights to a given disk block as efficiently as possible Prevent a malicious user from claiming another user’s disk blocks as part of her own files ...
Course number and name CSC 345 – Operating Systems Credits
... An introduction to operating systems concepts. Topics include processor management, storage management, device management, performance, security, and case studies of common operating systems. Prerequisites or co-requisites CSC 222 Indicate whether a required, elective, or selected elective (as per T ...
... An introduction to operating systems concepts. Topics include processor management, storage management, device management, performance, security, and case studies of common operating systems. Prerequisites or co-requisites CSC 222 Indicate whether a required, elective, or selected elective (as per T ...
Chap8.doc
... __12. Today the trend is for manufacturers to develop operating systems to run only on specific computers within that manufacturers’ product line. __13. A device driver is a program that tells the operating system how to communicate with a device. __14. Windows 95 did not require DOS to run. __15. ...
... __12. Today the trend is for manufacturers to develop operating systems to run only on specific computers within that manufacturers’ product line. __13. A device driver is a program that tells the operating system how to communicate with a device. __14. Windows 95 did not require DOS to run. __15. ...
PDF
... Maps parts of its address space to user process threads (using L4 primitives) Acts as pager thread for its user threads ...
... Maps parts of its address space to user process threads (using L4 primitives) Acts as pager thread for its user threads ...
Part IV: Longer Answer: Use your knowledge of operating systems to
... 3. _______________ is a Microsoft Windows standard for automating and simplifying the installation and configuration of device drivers after a hardware device has been installed. 4. _______________ is a multi-user time-sharing operating system; most versions are based on AT&T System 5 and Berkeley S ...
... 3. _______________ is a Microsoft Windows standard for automating and simplifying the installation and configuration of device drivers after a hardware device has been installed. 4. _______________ is a multi-user time-sharing operating system; most versions are based on AT&T System 5 and Berkeley S ...
![[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt](http://s1.studyres.com/store/data/014183875_1-7af0f6b03bedcfbf8972c6054b446a98-300x300.png)
[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt
... Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt events. So we can define an interrupt table For each element, there is a ...
... Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt events. So we can define an interrupt table For each element, there is a ...
fund8que.doc
... __13. A device driver is a program that tells the operating system how to communicate with a device. __14. Windows 95 did not require DOS to run. __15. UNIX commands may be considered somewhat difficult to remember and use. ...
... __13. A device driver is a program that tells the operating system how to communicate with a device. __14. Windows 95 did not require DOS to run. __15. UNIX commands may be considered somewhat difficult to remember and use. ...
Traditional UNIX kernels
... • Intended for small servers, workstations, desktops, and handhelds • Cost: Free ...
... • Intended for small servers, workstations, desktops, and handhelds • Cost: Free ...