Introduction - IDA.LiU.se
... § Multiprocessor systems with more than one CPU in close communication. • Soon the default, even for desktop machines (multi-core / CMP) § Tightly coupled system (aka. shared-memory system, multiprocessor) • processors share memory and a clock; • communication usually takes place through the shared ...
... § Multiprocessor systems with more than one CPU in close communication. • Soon the default, even for desktop machines (multi-core / CMP) § Tightly coupled system (aka. shared-memory system, multiprocessor) • processors share memory and a clock; • communication usually takes place through the shared ...
Last Class: Threads and Scheduling Today: More on Scheduling
... Instead, choose a scheduling algorithm based on its ability to satisfy a policy • Minimize average response time - provide output to the user as quickly as possible and process their input as soon as it is received. • Minimize variance of response time - in interactive systems, predictability may ...
... Instead, choose a scheduling algorithm based on its ability to satisfy a policy • Minimize average response time - provide output to the user as quickly as possible and process their input as soon as it is received. • Minimize variance of response time - in interactive systems, predictability may ...
CS 571 Operating Systems - GMU Computer Science
... • Stack Pointer (SP): points to the top of the current stack in memory. The stack contains one frame for each procedure that has been entered but not yet exited.! • Program Status Word (PSW): contains the condition code bits and various other control bits. ! When time multiplexing the CPU, the ...
... • Stack Pointer (SP): points to the top of the current stack in memory. The stack contains one frame for each procedure that has been entered but not yet exited.! • Program Status Word (PSW): contains the condition code bits and various other control bits. ! When time multiplexing the CPU, the ...
Chapter 3 Process Description and Control
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
Process Description and Control
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
Chapter 1 - PowerPoint
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
... Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems ...
Towards High-Performance Application-Level Storage
... sizes (e.g., 1KB, 4KB, 16KB) in a contiguous VSA region for small mail (e.g., without attachments), which can be filled directly upon mail arrival. Each worker thread can be assigned its own set of queue entries without requiring synchronization. Large mail can be stored in extents and referenced by ...
... sizes (e.g., 1KB, 4KB, 16KB) in a contiguous VSA region for small mail (e.g., without attachments), which can be filled directly upon mail arrival. Each worker thread can be assigned its own set of queue entries without requiring synchronization. Large mail can be stored in extents and referenced by ...
Final Review Questions
... Generally, blocking I/O is appropriate when the process will be waiting only for one specific event. Examples include a disk, tape, or keyboard read by an application program. Non-blocking I/O is useful when I/O may come from more than one source and the order of the I/O arrival is not predetermined ...
... Generally, blocking I/O is appropriate when the process will be waiting only for one specific event. Examples include a disk, tape, or keyboard read by an application program. Non-blocking I/O is useful when I/O may come from more than one source and the order of the I/O arrival is not predetermined ...
Introduction
... Embedded Systems Embedded OS vs Superloop Real-time Operating Systems Embedded Systems Development The RTEMS Real-Time OS The RTEMS Development Environment ...
... Embedded Systems Embedded OS vs Superloop Real-time Operating Systems Embedded Systems Development The RTEMS Real-Time OS The RTEMS Development Environment ...
Processes
... As a process executes, it changes state – new: The process is being created – running: Instructions are being executed – waiting: The process is waiting for some event to occur – ready: The process is waiting to be assigned to a processor – terminated: The process has finished execution ...
... As a process executes, it changes state – new: The process is being created – running: Instructions are being executed – waiting: The process is waiting for some event to occur – ready: The process is waiting to be assigned to a processor – terminated: The process has finished execution ...
The Spring Kernel: A New Paradigm for Real
... We assume that the environment is dynamic, large and complex. In this environment there exists many types of tasks. There are critical tasks, essential tasks, non-essential tasks, and tasks' deadlines may range over a wide spectrum. Critical tasks are those tasks which must make their deadline, oth ...
... We assume that the environment is dynamic, large and complex. In this environment there exists many types of tasks. There are critical tasks, essential tasks, non-essential tasks, and tasks' deadlines may range over a wide spectrum. Critical tasks are those tasks which must make their deadline, oth ...
Unit 1
... It is an electronic set which has the ability to store data and process them to reach certain results {information} by doing logical and mathematical processes using series of logical arranged instructions called the program. Some Modern Computer Shapes The computer is used in all everyday fields, w ...
... It is an electronic set which has the ability to store data and process them to reach certain results {information} by doing logical and mathematical processes using series of logical arranged instructions called the program. Some Modern Computer Shapes The computer is used in all everyday fields, w ...
word
... However, many operating system services such as file systems, virtual memory, IO system etc still needs to exist although users might have unprotected and unrestricted access to these. Q3a) Under the assumptions that there exits a schedule such that all jobs can be completed within the deadline, the ...
... However, many operating system services such as file systems, virtual memory, IO system etc still needs to exist although users might have unprotected and unrestricted access to these. Q3a) Under the assumptions that there exits a schedule such that all jobs can be completed within the deadline, the ...
I/O and Storage Management
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
No Slide Title
... Linux uses the same internal representation for processes and threads; a thread is simply a new process that happens to share the same address space as its parent. ...
... Linux uses the same internal representation for processes and threads; a thread is simply a new process that happens to share the same address space as its parent. ...
Chapter 8
... evenly among the processors • Simplier operating systems use asymmetric processing where, for example, all operating system tasks are on one processor and all user tasks are on the remaining processors • NT with two processors generally runs at about 150 percent of the speed of a one-processor syste ...
... evenly among the processors • Simplier operating systems use asymmetric processing where, for example, all operating system tasks are on one processor and all user tasks are on the remaining processors • NT with two processors generally runs at about 150 percent of the speed of a one-processor syste ...
The Linux System 21.2 Silberschatz, Galvin and Gagne ©2009
... Linux uses the same internal representation for processes and threads; a thread is simply a new process that happens to share the same address space as its parent. ...
... Linux uses the same internal representation for processes and threads; a thread is simply a new process that happens to share the same address space as its parent. ...
The Linux System
... thread is simply a new process that happens to share the same address space as its parent A distinction is only made when a new thread is created by the clone ...
... thread is simply a new process that happens to share the same address space as its parent A distinction is only made when a new thread is created by the clone ...
Chapter 3 Process Description and Control
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
... – How are processes represented and controlled by the OS. – Process states which characterize the behaviour of processes. – Data structures used to manage processes. – Ways in which the OS uses these data structures to control process execution. – Discuss process management in UNIX SVR4. ...
What is an Operating System?
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
What is an Operating System?
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
ch1
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...