Measuring Real-Time Performance Of An RTOS - Express Logic

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Semaphore Processing • A semaphore is a system resource used to guarantee a task exclusive access to a critical resource. Semaphores synchronize asynchronous activities • This test consists of a thread getting a semaphore and then immediately releasing it. – After the get/release cycle completes, the thread increments its run counter Get Semaphore Release Semaphore Count++ Loop Semaphore 14
Memory Allocation • Applications commonly must allocate memory dynamically to avoid the need to plan for the maximum possible memory needs of all tasks at the same time • This test consists of a thread allocating a 128-byte block of memory and releasing the same block. • After the block is released, the thread increments its run counter Allocate Memory Release Memory Count++ Loop Memory Block 15
Page 1 and 2: Express Logic, Inc. © 2006, Expres
Page 3 and 4: Most Important RTOS Capabilities
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: Message Processing • A Thread sen
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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