Go: More predictable benchmarking with testing.B.Loop

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<h1 class="small"><a href="/blog/">The Go Blog</a></h1>


<h1>More predictable benchmarking with testing.B.Loop</h1>
  
  <p class="author">
  Junyang Shao<br>
  2 April 2025
  </p>
  
  <p>Go developers who have written benchmarks using the

testing package might have encountered some of
its various pitfalls. Go 1.24 introduces a new way to write benchmarks that’s just
as easy to use, but at the same time far more robust:
testing.B.Loop.

Traditionally, Go benchmarks are written using a loop from 0 to b.N:

func Benchmark(b *testing.B) {
  for range b.N {
    ... code to measure ...
  }
}

Usi...

Get the full details here: More predictable benchmarking with testing.B.Loop - The Go Programming Language