Instruction cache optimizations in embedded real time systems

... corresponding time deadlines, while no timing constraint is required in generalpurpose computer systems Real- time systems that have timing constraint can be classified into two types, soft real- time systems ... and hard real- time systems In soft real- time systems, the timing constraint is elastic Miss of the deadline in soft real- time systems only results...

Ngày tải lên: 10/09/2015, 09:02

... cache locking for improving the timing predictability for hard real-time systems and the average-case performance of general embedded systems 3.3.1 Hard Real-time Systems Instruction cache locking ... most existing cache locking techniques are proposed for improving the predictability of hard real-time systems Using cache locking for improving the performance of ge...

Ngày tải lên: 11/09/2015, 10:02

... Logics, Controller Synthesis 17 2.1 Automata on Infinite Words and Infinite Trees 17 2.2 Logics over Infinite Words and Infinite Trees 21 2.3 Controller Synthesis 25 Chapter Distributed Controller Synthesis ... contributions on controller synthesis in distributed, real- time and hybrid settings In the last section, we outline the organization of subsequent c...

Ngày tải lên: 30/09/2015, 05:46

... Chapter 19: Real- Time Systems s System Characteristics s Features of Real- Time Systems s Implementing Real- Time Operating Systems s Real- Time CPU Scheduling s VxWorks ... Real- Time Kernels s Most real- time systems not provide the features found in a standard desktop system s Reasons include q Real- time systems are typically single-purpose q Real- tim...

Ngày tải lên: 13/05/2014, 00:36

... distributions for embedded systems based on Linux and other open source developments This special issue focuses on new results of research work and development in the field of real-time operating systems for ... aspects such as mutiprocessor system support, poweraware operating systems, real-time communications will have a relevant role in the next generation of embedded sys...

Ngày tải lên: 21/06/2014, 22:20

... Chapter 19: Real-Time Systems System Characteristics Features of Real-Time Systems Implementing Real-Time Operating Systems Real-Time CPU Scheduling VxWorks 5.x Operating System Concepts ... of real-time systems To distinguish between hard and soft real-time systems To discuss the defining characteristics of real-time systems To describe scheduling algo...

Ngày tải lên: 28/06/2014, 02:20

... xvii 1. 1 Terminology / 1. 1 .1 Systems Concepts / 1. 1.2 Real-Time Definitions / 1. 1.3 Events and Determinism / 1. 1.4 CPU Utilization / 10 1. 2 Real-Time System Design Issues / 12 1. 3 Example Real-Time ... Real-Time Systems / 13 1. 4 Common Misconceptions / 15 1. 5 Brief History / 16 1. 5 .1 Theoretical Advances / 17 1. 5.2 Early Systems / 17 1. 5.3 H...

Ngày tải lên: 13/08/2014, 08:20

... avionics systems, and medical systems, and the real-time design issues are the same for them as they are for most other systems 2. 7 a OTHER SPECIAL DEVICES 59 b x1 x2 x3 x4 Figure 2. 24 A typical ... resultant and operandum as the same The 2- address instruction is of the form: op-code operandam, operandum As a mathematical function, the 2- address would be expressed as: op...

Ngày tải lên: 13/08/2014, 08:20

... 24 26 28 30 32 t2 Figure 3. 10 EDF task schedule for task set in Table 3. 4 Table 3. 4 Task set for example of EDF scheduling τi ei pi τ1 τ2 34 36 98 REAL-TIME OPERATING SYSTEMS Table 3. 5 Task set ... execution at t6 and lets 3 execute to completion at t7 Task 3 is then allowed to lock S1 , and subsequently S2 , and completes at t8 122 REAL-TIME OPERATING SYSTEMS 3....

Ngày tải lên: 13/08/2014, 08:20

... complex diagrams 4. 5 STRUCTURED ANALYSIS AND DESIGN Methods for structured analysis and structured design (SASD) have evolved over almost 30 years and are widely used in real- time applications, ... high-resolution interval timer structure: struct itimerspec{ struct timespec it_value, it_interval; }; int timer_settime (timer_t timerid, int flag, struct itimerspec *value, st...

Ngày tải lên: 13/08/2014, 08:20

... Event All Traffic Standards/Display of Commanded Phase All Traffic Standards/Display of Commanded Phase All Traffic Standards/Display of Phase All Traffic Standards/Display of commanded phase Intersection ... 2003 Real-Time Systems Design and Analysis, By Phillip A Laplante ISBN 0-471-22 855 -9  2004 Institute of Electrical and Electronics Engineers 2 25 226 SOFTWARE SYSTEM DESIGN...

Ngày tải lên: 13/08/2014, 08:20