Concepts in Real-Time Operating Systems
... Real-Time Priority Levels: A real-time operating system must support static priority levels. A priority level supported by an operating system is called static, when once the programmer assigns a priority value to a task, the operating system does not change it by itself. Static priority levels are ...
... Real-Time Priority Levels: A real-time operating system must support static priority levels. A priority level supported by an operating system is called static, when once the programmer assigns a priority value to a task, the operating system does not change it by itself. Static priority levels are ...
VirtualMachines
... VM Performance Why is VM slower than physical hardware? Emulation: Sensitive instructions must be emulated. Interrupt Handling: VMM must handle interrupts, even if eventually passed to guest. Context Switches: VMM must save VM state when controlled transferred to VMM. Bookkeeping: VMM has to do wor ...
... VM Performance Why is VM slower than physical hardware? Emulation: Sensitive instructions must be emulated. Interrupt Handling: VMM must handle interrupts, even if eventually passed to guest. Context Switches: VMM must save VM state when controlled transferred to VMM. Bookkeeping: VMM has to do wor ...
Advanced Operating Systems
... To establish a base for future Operating System research and development. To discuss latest developments in OS computer via class lectures and assigned readings. To find the current research issues in the field. Finally, prepare to perform some projects in OS which are essential in national developm ...
... To establish a base for future Operating System research and development. To discuss latest developments in OS computer via class lectures and assigned readings. To find the current research issues in the field. Finally, prepare to perform some projects in OS which are essential in national developm ...
Running Linux and AUTOSAR side by side
... must at the same time fulfill requirements for two types of systems, which cannot easily be provided by a single operating system. A viable but impractical method for building such a hybrid system is to implement all parts to the same standards according to the highest level of criticality on top of ...
... must at the same time fulfill requirements for two types of systems, which cannot easily be provided by a single operating system. A viable but impractical method for building such a hybrid system is to implement all parts to the same standards according to the highest level of criticality on top of ...
Windows 2000 System Architecture
... Included to meet US Government requirements Windows 2000 implements POSIX 1003.1 Provides limited set of services • Can’t create threads, windows or use sockets! – Executables linked against POSIX subsystem library (Psxdll.dll) – Commercial Unix-to-Win32 library better approach for porting UNIX appl ...
... Included to meet US Government requirements Windows 2000 implements POSIX 1003.1 Provides limited set of services • Can’t create threads, windows or use sockets! – Executables linked against POSIX subsystem library (Psxdll.dll) – Commercial Unix-to-Win32 library better approach for porting UNIX appl ...
slides-13
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
Chapter 1
... Hybrid systems A combination of batch and interactive systems. Appear to be interactive because individual users can access the system and get fast responses. Accepts and run batch programs in the background when the interactive load is light. Takes advantage of the free time between highdeman ...
... Hybrid systems A combination of batch and interactive systems. Appear to be interactive because individual users can access the system and get fast responses. Accepts and run batch programs in the background when the interactive load is light. Takes advantage of the free time between highdeman ...
File System
... hardware supports virtual to physical mapping a paging mechanism, transparent cache coherence on multiprocessor systems, and virtual addressing aliasing The VM manager in 2000 uses a page-based management ...
... hardware supports virtual to physical mapping a paging mechanism, transparent cache coherence on multiprocessor systems, and virtual addressing aliasing The VM manager in 2000 uses a page-based management ...
Module 4: Processes
... I/O-bound process – spends more time doing I/O than computations, many short CPU bursts ...
... I/O-bound process – spends more time doing I/O than computations, many short CPU bursts ...
No Slide Title
... hardware supports virtual to physical mapping a paging mechanism, transparent cache coherence on multiprocessor systems, and virtual addressing aliasing The VM manager in 2000 uses a page-based management ...
... hardware supports virtual to physical mapping a paging mechanism, transparent cache coherence on multiprocessor systems, and virtual addressing aliasing The VM manager in 2000 uses a page-based management ...
I/O Systems & Mass-Storage Structure
... To use a disk to hold files, the operating system still needs to record its own data structures on the disk. Partition the disk into one or more groups of cylinders. Logical formatting or “making a file system”. ...
... To use a disk to hold files, the operating system still needs to record its own data structures on the disk. Partition the disk into one or more groups of cylinders. Logical formatting or “making a file system”. ...
Powerpoint format - Computer and Information Sciences
... • For high granularity, it may not be desirable to swap out a thread while the other thread is still running on a different processor • In short-term scheduling (pick and dispatch), the overly complicated scheduling schemes may not be necessary ...
... • For high granularity, it may not be desirable to swap out a thread while the other thread is still running on a different processor • In short-term scheduling (pick and dispatch), the overly complicated scheduling schemes may not be necessary ...
Chapter 13: I/O Systems Silberschatz, Galvin and Gagne ©2013! Edition!
... Application I/O Interface ■ I/O system calls encapsulate device behaviors in generic classes" ■ Device-driver layer hides differences among I/O controllers from kernel" ...
... Application I/O Interface ■ I/O system calls encapsulate device behaviors in generic classes" ■ Device-driver layer hides differences among I/O controllers from kernel" ...
Mac OS 8 Revealed
... major topics. Here and elsewhere, words appear in boldface when first defined. Words appearing in boldface are also listed in the glossary at the end of the book. Many general computer science terms are left undefined in the main text but are defined in the page margins. Thus, you can easily skip ov ...
... major topics. Here and elsewhere, words appear in boldface when first defined. Words appearing in boldface are also listed in the glossary at the end of the book. Many general computer science terms are left undefined in the main text but are defined in the page margins. Thus, you can easily skip ov ...
Real-time operating system survey
... For multiple threads to communicate among each other, in a timely fashion, predictable inter-thread communication and synchronization mechanisms are required. Also, supported should be the ability to lock/unlock resources to achieve data integrity. ...
... For multiple threads to communicate among each other, in a timely fashion, predictable inter-thread communication and synchronization mechanisms are required. Also, supported should be the ability to lock/unlock resources to achieve data integrity. ...
Operating System Extensions to Support Host Based Virtual Machines
... level. For example, an entire Ethernet frame can be sent to the VMM using a single instruction. This significantly reduces the number of guest to VMM traps, and simplifies the design of guest OSs. Denali runs directly on top of the hardware, there is no host operating system. As a consequence, the D ...
... level. For example, an entire Ethernet frame can be sent to the VMM using a single instruction. This significantly reduces the number of guest to VMM traps, and simplifies the design of guest OSs. Denali runs directly on top of the hardware, there is no host operating system. As a consequence, the D ...
Presentation Title Size 30PT
... This chapter labs might take more than one class period to complete. When installing an operating system, ensure that the computer is disconnected from the Internet. Students should install the Windows XP operating system, install service pack 2, connect to the Internet, and then check for updat ...
... This chapter labs might take more than one class period to complete. When installing an operating system, ensure that the computer is disconnected from the Internet. Students should install the Windows XP operating system, install service pack 2, connect to the Internet, and then check for updat ...
PowerPoint XP
... One application uses only the processor One application uses only the disk drive Completion time is shorter when running ...
... One application uses only the processor One application uses only the disk drive Completion time is shorter when running ...
![[slides] Case study: Windows](http://s1.studyres.com/store/data/008424774_1-87b89c613bf8233f6d9038041cfe401c-300x300.png)
[slides] Case study: Windows
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
Module 4: Processes
... selects which processes should be brought into the ready queue. Is necessary when there are more processes submitted than can ...
... selects which processes should be brought into the ready queue. Is necessary when there are more processes submitted than can ...
Chapter 16: Windows 7
... to initial problems with application and device compatibility and sluggishness on the explosion of low-end “netbook” devices.! Windows 7 was released in late 2009, greatly improving on Vista.! ...
... to initial problems with application and device compatibility and sluggishness on the explosion of low-end “netbook” devices.! Windows 7 was released in late 2009, greatly improving on Vista.! ...
ch16.ppt
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
Processes and Threads - University of Waterloo
... Blocked Threads The simple preemptive scheduling strategy maintains a list of ready threads, but what does it mean for a thread to be ready? Definition – A thread is ready when it is not blocked. A thread can be blocked because it is ...
... Blocked Threads The simple preemptive scheduling strategy maintains a list of ready threads, but what does it mean for a thread to be ready? Definition – A thread is ready when it is not blocked. A thread can be blocked because it is ...