访问基准测试结果 [英] Accessing a benchmark's result

问题描述

我已经看到Go中有一个结构 testing.BenchmarkResult 基准测试，但是我发现很少有文档或示例可以帮助我使用它.

I've seen there is a struct testing.BenchmarkResult in Go to accesss the result of a benchmark but I found very little documentation or examples to help me use it.

到目前为止，我仅对这样的功能进行基准测试:

So far I have only been benchmarking my functions like this:

func BenchmarkMyFunction(b *testing.B) {
   // call to myFunction
}

然后运行:

go test -bench=".*"

这里将结果打印到控制台，但我想将它们存储在单独的文件中.如何使用BenchmarkResult类型执行此操作?

Here the results are printed to the console but I'd like to store them in a separate file. How can I use the BenchmarkResult type to do this?

推荐答案

例如:

package main

import (
    "fmt"
    "testing"
    "time"
)

func Add(a, b int) int {
    time.Sleep(10 * time.Microsecond) // Just to make the test take some time
    return a + b
}

func BenchAdd(b *testing.B) {
    for i := 0; i < b.N; i++ {
        _ = Add(1, 2)
    }
}

func main() {
    res := testing.Benchmark(BenchAdd)
    fmt.Printf("%s\n%#[1]v\n", res)
}

产生:

  120000         10000 ns/op
testing.BenchmarkResult{N:120000, T:1200000000, Bytes:0, MemAllocs:0x0, MemBytes:0x0, Extra:map[string]float64{}}

游乐场.

您可以使用 ioutil.WriteFile 轻松地将这些结果写到文件中. 带有WriteFile的游乐场.

You can easily write these results out to a file using ioutil.WriteFile. Playground w/ WriteFile.

这篇关于访问基准测试结果的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！