英文:
Go Benchmark how does it work
问题
以下是翻译好的内容：
我已经让我的Go基准测试与我的API调用一起工作了，但是我不太确定下面的输出是什么意思：
$ go test intapi -bench=. -benchmem -cover -v -cpuprofile=cpu.out
=== RUN TestAuthenticate
--- PASS: TestAuthenticate (0.00 seconds)
PASS
BenchmarkAuthenticate 20000 105010 ns/op 3199 B/op 49 allocs/op
coverage: 0.0% of statements
ok intapi 4.349s
它是如何知道要进行多少次调用的？我确实有一个循环，循环的大小是b.N，但是Golang是如何知道要运行多少次的？
另外，我现在有了CPU分析文件。我该如何使用它来查看呢？
英文:
I've got my Go benchmark working with my API calls but I'm not exactly sure what it means below:
$ go test intapi -bench=. -benchmem -cover -v -cpuprofile=cpu.out
=== RUN TestAuthenticate
--- PASS: TestAuthenticate (0.00 seconds)
PASS
BenchmarkAuthenticate 20000 105010 ns/op 3199 B/op 49 allocs/op
coverage: 0.0% of statements
ok intapi 4.349s
How does it know how many calls it should make? I do have a loop with b.N as size of the loop but how does Golang know how many to run?
Also I now have cpu profile file. How can I use this to view it?
答案1
得分: 1
从TFM：
基准函数必须运行目标代码 b.N 次。基准包将会调整 b.N 的值，直到基准函数运行的时间足够长，可以可靠地计时。
英文:
From TFM:
> The benchmark function must run the target code b.N times. The benchmark package will vary b.N until the benchmark function lasts long enough to be timed reliably.
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