打开终端，进入项目根目录，执行如下命令。
$go test -bench=. -count=3
输出:
goos: darwin
goarch: amd64
pkg: weizicoding.com/go-locality
cpu: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
BenchmarkLoopStep1-12 413377 2870 ns/op
BenchmarkLoopStep1-12 417328 2909 ns/op
BenchmarkLoopStep1-12 425328 2910 ns/op
BenchmarkLoopStep2-12 222739 5198 ns/op
BenchmarkLoopStep2-12 229764 5124 ns/op
BenchmarkLoopStep2-12 227998 5199 ns/op
BenchmarkLoopStep3-12 289923 3824 ns/op
BenchmarkLoopStep3-12 320758 3833 ns/op
BenchmarkLoopStep3-12 309706 3859 ns/op
BenchmarkLoopStep4-12 235686 5172 ns/op
BenchmarkLoopStep4-12 227913 5201 ns/op
BenchmarkLoopStep4-12 213157 5201 ns/op
BenchmarkLoopStep5-12 218772 5646 ns/op
BenchmarkLoopStep5-12 212197 5708 ns/op
BenchmarkLoopStep5-12 207944 5932 ns/op
BenchmarkLoopStep6-12 174680 6750 ns/op
BenchmarkLoopStep6-12 181030 6595 ns/op
BenchmarkLoopStep6-12 183346 6600 ns/op
BenchmarkLoopStep12-12 123316 10138 ns/op
BenchmarkLoopStep12-12 123435 9518 ns/op
BenchmarkLoopStep12-12 125121 9746 ns/op
BenchmarkLoopStep16-12 91929 12622 ns/op
BenchmarkLoopStep16-12 93736 12830 ns/op
BenchmarkLoopStep16-12 90597 15198 ns/op
PASS
ok weizicoding.com/go-locality 34.396s跨度 1 时的性能，是跨度 16 时的 4 ~ 5 倍。