In order to gain greater fidelity in benchmark outputs, we can designate a specific unit of time, listed here from shortest to longest:

• NANOSECONDS
• MICROSECONDS
• MILLISECONDS
• SECONDS
• MINUTES
• HOURS
• DAYS

In order to make this designation, we simply add the following code to our @Benchmark line:

@Benchmark @BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)

In the preceding example, we have designated the average mode and nanoseconds as the time unit.