Dhrystone benchmarking demo

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example shows an application for benchmarking the FreeRTOS SMP kernel and single core FreeRTOS kernel using dhrystone benchmarking.

The application runs the the dhrystone benchmarking demo using the given number of threads and iterations and logs the results as the number of dhrystones run per second.

The application runs with thread number equal to 1, 2, 5 and 10, with iteration number 30000000.

Supported Combinations

Attention

A53 NORTOS, A53 FREERTOS and A53 FREERTOS SMP support is experimental and is NOT supported by TI.

Parameter	Value
CPU + OS	a53ss0-0 freertos
	a53ss0-0 freertos-smp
Toolchain	arm.gnu.aarch64-none
Board	am64x-evm
Example folder	examples/kernel/freertos/dhrystone_benchmark/

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run and Running SMP FreeRTOS application on A53

See Also

Driver Porting Layer (DPL)

Sample Output

Shown below is a sample output when the benchmark application is run,

[DHRYSTONE BENCHMARKING] Iterations                       : 30000000
[DHRYSTONE BENCHMARKING] Threads                          : 1
[DHRYSTONE BENCHMARKING] Dhrystones per second            : 1299
 
[DHRYSTONE BENCHMARKING] Iterations                       : 30000000
[DHRYSTONE BENCHMARKING] Threads                          : 2
[DHRYSTONE BENCHMARKING] Dhrystones per second            : 1183
 
[DHRYSTONE BENCHMARKING] Iterations                       : 30000000
[DHRYSTONE BENCHMARKING] Threads                          : 5
[DHRYSTONE BENCHMARKING] Dhrystones per second            : 281
 
[DHRYSTONE BENCHMARKING] Iterations                       : 30000000
[DHRYSTONE BENCHMARKING] Threads                          : 10
[DHRYSTONE BENCHMARKING] Dhrystones per second            : 50
 
All tests have passed!!