=== RUN   TestOne
    bench_test.go:9: test log
--- PASS: TestOne (0.00s)
goos: linux
goarch: amd64
pkg: package/bench
BenchmarkOne
    bench_test.go:13: benchmark log (1)
    bench_test.go:13: benchmark log (100)
    bench_test.go:13: benchmark log (10000)
    bench_test.go:13: benchmark log (1000000)
    bench_test.go:13: benchmark log (100000000)
    bench_test.go:13: benchmark log (1000000000)
BenchmarkOne-8   	1000000000	         0.2642 ns/op
BenchmarkTwo
BenchmarkTwo-8   	39560503	        33.21 ns/op
PASS
ok  	package/bench	1.640s
