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Profiling C++ Code

For C++, we will be using the Visual Studio built-in Performance Profiler tool.

Note that you need an executable file to proceed with this profiling step. Make sure to run the application at least once before proceeding to the next steps!

To profile your code, follow the below steps:

With VisualStudio 2017

  1. Make sure to enable the benchmark test case in test/BenchmarkTest.cpp
  2. Go to Debug > Performance Profiler...
  3. Click on the Change Target drop-down button, and choose Executable
  4. Make sure the Performance Wizard checkbox is checked
  5. Click on the Start button. This should open the window Performance Wizard
  6. Choose the CPU Sampling option then click Next
  7. Choose the An executable (.EXE file) option then click Next
  8. From What is the full path to the executable?, select the .exe file associated with this kata. It should be under cpp/build/bin/Debug.
  9. Click Next
  10. Make sure the box Launch profiling after the wizard finishes is checked
  11. Click on Finish
  12. Once the report is finalized, you can go to the Call Tree view to analyze the time consumed by each function.
  13. Improve your code and redo steps 1 to 8

With VisualStudio 2019 and 2022

  1. Make sure to enable the benchmark test case in test/BenchmarkTest.cpp
  2. Go to Debug > Performance Profiler...
  3. Click on the Change Target drop-down button, and choose Executable
  4. From Path to the executable?, select the .exe file associated with this kata. It should be under cpp/build/bin/Debug.
  5. Click OK
  6. Select CPU Usage
  7. Click on Start button
  8. Once the report is finalized, you can set Current View dropdown to Functions
  9. Improve your code and redo steps 1 to 8