Texas Instruments SPRAA56 appendix Interpreting the Benchmarks, Workspace Including RTA Windows

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SPRAA56

Figure 6. Workspace Including RTA Windows

5.3Interpreting the Benchmarks

There are a total of 20 statistics measured by the application: 16 application-specific STS objects and 4 objects created automatically with the TSKs. Figure 7 shows a sample Statistics View of all these measurements.

22DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application

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Contents Viewing Benchmarks in the Instrumented Application Modifications to the Base ExampleRTA Techniques for Performance Measurement References Appendix A. Performance ImpactImportant Benchmarks for Video Applications FiguresBase Application Overview SPRAA56TskInput DSP/BIOS and RF5 Components Used 1 LOG3 TRC 2 STS4 UTL Modifications to the Base Example Requirements for Viewing RTA BenchmarksSplitting the Encode and Decode CELLs Adding the Control TSK and MBX CommunicationTskInput Querying the H.263 Encoder for StatusTskO utput Controlling the Frame Rate RTA Techniques for Performance Measurement Measuring Function Execution Time with the UTL ModuleMeasuring Task Scheduling Latencies Measuring End-to-End LatenciesMeasuring the Frame Rate Programmatic Measurement of Total CPU Load Memory Bus Utilization 14,400 B 720*480 = 345,600 B86,400 B External memoryBitrate and Frame Type Methods for Transmitting Measured Performance Data Application-Specific Control via GEL Scripts in CCStudio Viewing Benchmarks in the Instrumented ApplicationRequirements Running the Application Load the h263loopbackrta.out programSPRAA56 Interpreting the Benchmarks Expected Values for the STS Objects Expected and Measured STS Benchmarks Controlling the Run-Time Parameters Dynamically Debug ModeExpected Values Delivered to the Message Log Expected and Measured Logged BenchmarksReferences Capture and Display Task BenchmarkingRTA Effects on CPU Load Appendix A. Performance ImpactOverhead of Performance Measurement Techniques Measured Performance of Benchmarking TechniquesMemory Footprint Memory Footprint DetailsImportant Notice