'Higher priority tasks' diaporamas de présentation

Real-Time Operating Systems

Real-Time Operating Systems. Raquel S. Whittlesey-Harris. Contents. What is a real-time OS? OS Structures OS Basics RTOS Basics Basic Facilities Interrupts Memory Development Methodologies Summary References. What is a Real-time OS?. A RTOS (Real-Time Operating System)

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Performance Analysis of Concurrent & Distributed Real-Time Software Designs

Performance Analysis of Concurrent & Distributed Real-Time Software Designs. ECEN5053 Software Engineering of Distributed Systems University of Colorado. Overview. Why bother Review of RMA Advanced RMA Event Sequence Analysis Examples. Why bother?.

709 views • 46 slides

MicroC/OS-II

MicroC/OS-II. Chapter 3 Kernel Structure. uC/OS-II file structure. uC. uC. uC. Critical Section. To disable interrupts in order to access critical sections of code and to reenable interrupts when down . The interrupt disable time affects the responsiveness of system or real-time events

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Scheduling

Scheduling. CS 161: Lecture 18 4/10/19. Scheduling: Which Process Should Run Now?. Different processes have different behaviors IO-bound: A process mostly waits for IOs to complete CPU-bound: A process issues few IOs, mostly does computation

350 views • 32 slides

Resource Management - III

Resource Management - III. Lecture 19. Summary of Previous Lecture. What we have learned : Embedded real time systems are an important class of problems. Key concepts in real time computing. How to analyze the schedulability of independent periodic tasks. (Dealing with transient overload

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Real-Time Operating Systems

CSED191 | ??????? | November 2006. Real-Time Operating Systems. ??? , ??? , ???. What is a Real-Time OS?. A RTOS(Real-Time Operating System) An Operating System with the necessary features to support a Real-Time System What is a Real-Time System?

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Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment

Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment. C.L. Liu and James W. Layland. Presented by Pete Perlegos. Assumptions. The requests for all tasks for which hard deadlines exist are periodic, with constant interval between requests.

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Embedded Operating System Design

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Recap from last time -I

Recap from last time -I. Given a system of periodic tasks : ? = {? 1 , ? 2 ,... ? n }; ? i = (T i , C i ) Schedule using static priorities (of the first kind ) Two approaches: partitioning Dhall (1977), Dhall & Liu (1979): min #-procs for given ?

205 views • 12 slides