When profiling on x86 don’t expect the results to be accurate for ARM.

• Strengths and weaknesses of the platform will affect results.

Profiles will show you where most time is spent.

• That’s not going to highlight any algorithmic mistakes.
• You can tune a bubble sort to perfection...

Remember to profile release builds.

• Including debugging code may skew your results:
• Debug mode normally inhibits compiler optimisations.
• Debug builds enable a variety of extra bits (assertions, debug output).