Measuring Real-Time Performance Of An RTOS - Express Logic

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Who Needs An RTOS? • Applications with multiple threads – Modular design organizes functionality – Schedules processing to handle workload – Priority-based preemption – Message-passing • Applications with external events – Interrupt response, resumption management – Enables rapid response to external events • Applications with network communications – Handles thread-thread communications – Handles Internet communications 2
Most Important RTOS Capabilities • Evans Data Corporation’s Surveys reveal the Top 5 RTOS Features most valued by developers: 1. Real-time responsiveness (33.2%) 2. Royalty-free pricing (14.7%) 3. Source code availability (10.6%) 4. Tools integration (IDE) (10.1%) 5. Microprocessor coverage (7.8%) Source: http://www.evansdata.com/n2/surveys/embedded/2003_1/embedded_xmp1.shtml 3
Page 1: Express Logic, Inc. © 2006, Expres
Page 5 and 6: Thread-Metric: An Open RTOS Benchma
Page 7 and 8: How Are Services Measured? • Lots
Page 9 and 10: Cooperative Context Switching • T
Page 11 and 12: Interrupt Handling • Must conside
Page 13 and 14: Message Processing • A Thread sen
Page 15 and 16: Memory Allocation • Applications
Page 17 and 18: Test Environment • ARM Versatile
Page 19 and 20: How To Get The Code • Download fr

Measuring Real-Time Performance Of An RTOS - Express Logic

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