go基准测试

测试时间为5秒钟

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zhb@DESKTOP-80JJESV MINGW64 /d/Go/WorkSpace/mytest/com/zhb/utils
$ go test -benchmem -benchtime=5s -bench .
goos: windows
goarch: amd64
pkg: mytest/com/zhb/utils
cpu: Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz
BenchmarkApproach1-12           74540550                78.80 ns/op           32 B/op          1 allocs/op
BenchmarkApproach4-12             658540              9213 ns/op            5488 B/op          4 allocs/op
BenchmarkApproach5-12           33707202               177.1 ns/op            16 B/op          1 allocs/op
PASS
ok      mytest/com/zhb/utils    18.324s

测试次数为10000次

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zhb@DESKTOP-80JJESV MINGW64 /d/Go/WorkSpace/mytest/com/zhb/utils
$ go test -benchmem -benchtime=10000x -bench .
goos: windows
goarch: amd64
pkg: mytest/com/zhb/utils
cpu: Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz
BenchmarkApproach1-12              10000               110.8 ns/op            32 B/op          1 allocs/op
BenchmarkApproach4-12              10000              9462 ns/op            5488 B/op          4 allocs/op
BenchmarkApproach5-12              10000               100.0 ns/op            16 B/op          1 allocs/op
PASS
ok      mytest/com/zhb/utils    0.147s