in Sources/_TracingBenchmarkTools/DriverUtils.swift [593:601]
func iterationsPerSampleTime() -> (numIters: Int, oneIter: Int) {
let oneIter = measure(test.name, fn: testFn, numIters: 1)
if oneIter > 0 {
let timePerSample = Int(c.sampleTime * 1_000_000.0) // microseconds (μs)
return (max(timePerSample / oneIter, 1), oneIter)
} else {
return (1, oneIter)
}
}