Json Vegeta HTTP 负载测试的输出

Question

我正在使用 Vegeta 进行压力测试，但在生成 json 报告时遇到了一些问题。运行以下命令我能够看到文本结果：

贝吉塔攻击 -targets="./vegeta_sagemaker_True.txt" -rate=10 -duration=2s | vegeta report -output="attack.json" -type=text

Requests      [total, rate]            20, 10.52
Duration      [total, attack, wait]    2.403464884s, 1.901136s, 502.328884ms
Latencies     [mean, 50, 95, 99, max]  945.385864ms, 984.768025ms, 1.368113304s, 1.424427549s, 1.424427549s
Bytes In      [total, mean]            5919, 295.95
Bytes Out     [total, mean]            7104, 355.20
Success       [ratio]                  95.00%
Status Codes  [code:count]             200:19  400:1  
Error Set:
400

当我运行相同的命令将 -type-text 更改为 -type=json 时，我收到非常奇怪的数字广告，它们对我来说没有意义：

{
  "latencies": {
    "total": 19853536952,
    "mean": 992676847,
    "50th": 972074984,
    "95th": 1438787021,
    "99th": 1636579198,
    "max": 1636579198
  },
  "bytes_in": {
    "total": 5919,
    "mean": 295.95
  },
  "bytes_out": {
    "total": 7104,
    "mean": 355.2
  },
  "earliest": "2019-04-24T14:32:23.099072+02:00",
  "latest": "2019-04-24T14:32:25.00025+02:00",
  "end": "2019-04-24T14:32:25.761337546+02:00",
  "duration": 1901178000,
  "wait": 761087546,
  "requests": 20,
  "rate": 10.519793517492838,
  "success": 0.95,
  "status_codes": {
    "200": 19,
    "400": 1
  },
  "errors": [
    "400 "
  ]
}

有谁知道为什么会这样？

谢谢！

Answer 1

这些数字是纳秒——time.Duration 在 Go 中的内部表示。

比如JSON中的latencies.mean是992676847，表示992676847纳秒，即992676847/1000/1000 = 992.676847ms。

实际上，在vegeta中，如果你将type声明为text（-type=text），它将使用NewTextReporter, and print the time.Duration as a user-friendly string. If you declare type as json (-type=json), it will use NewJSONReporter and return time.Duration的内部表示：

A Duration represents the elapsed time between two instants as an int64 nanosecond count. The representation limits the largest representable duration to approximately 290 years.

Json Vegeta HTTP 负载测试的输出

Json output from Vegeta HTTP load testing

http

command-line-interface

load-testing

vegeta