What are some effective methods for benchmarking C++ code?

What are some effective methods for benchmarking C++ code?

There are several methods for benchmarking C++ code, including using built-in timing functions, profiling tools, and libraries like Google Benchmark.

Can you explain how to use Google Benchmark?

Sure! Google Benchmark is a library that allows you to measure the performance of your C++ functions. You can define benchmarks using the BENCHMARK macro and run them to get detailed performance metrics.

What are some common pitfalls to avoid when benchmarking?

Common pitfalls include not running benchmarks in a controlled environment, failing to account for compiler optimizations, and not running multiple iterations to get reliable results.

How can I ensure my benchmarks are accurate?

To ensure accuracy, run benchmarks multiple times, use a warm-up phase, and isolate the benchmarking code from other processes.