go-wrk 是一个用Go语言实现的轻量级的http基准测试工具，类似于wrk（还有ab、siege），本文将简单介绍一下如何使用go-wrk实现接口的性能(压力)测试。

安装 go-wrk

go get github.com/adeven/go-wrk

go-wrk 选项说明

#./go-wrk --help
Usage of ./go-wrk:
  -CA string
        A PEM eoncoded CA's certificate file. (default "someCertCAFile")
  -H string
        the http headers sent separated by '\n' (default "User-Agent: go-wrk 0.1 benchmark\nContent-Type: text/html;")
  -b string
        the http request body
  -c int
        the max numbers of connections used (default 100)
  -cert string
        A PEM eoncoded certificate file. (default "someCertFile")
  -d string
        dist mode
  -f string
        json config file
  -i    TLS checks are disabled
  -k    if keep-alives are disabled (default true)
  -key string
        A PEM encoded private key file. (default "someKeyFile")
  -m string
        the http request method (default "GET")
  -n int
        the total number of calls processed (default 1000)
  -p string
        the http request body data file
  -r    in the case of having stream or file in the response,
         it reads all response body to calculate the response size
  -s string
        if specified, it counts how often the searched string s is contained in the responses
  -t int
        the numbers of threads used (default 1)

使用

使用方法同wrk类似，基本格式如下：

go-wrk [flags] url

常用的参数：

-H="User-Agent: go-wrk 0.1 bechmark\nContent-Type: text/html;": 由'\n'分隔的请求头
-c=100: 使用的最大连接数
-k=true: 是否禁用keep-alives
-i=false: if TLS security checks are disabled
-m="GET": HTTP请求方法
-n=1000: 请求总数
-t=1: 使用的线程数
-b="" HTTP请求体
-s="" 如果指定，它将计算响应中包含搜索到的字符串s的频率

执行测试：

# 8个线程，400个连接， 模拟10w次请求
./go-wrk -c=400 -t=8 -n=100000 "http://localhost:8082/test/query?lat=39.915&lng=116.404"

输出结果：

==========================BENCHMARK==========================
URL:                http://localhost:8082/test/query?lat=39.915&lng=116.404
Used Connections:        400
Used Threads:            8
Total number of calls:        100000
===========================TIMINGS===========================
Total time passed:        99.46s
Avg time per request:        395.89ms
Requests per second:        1005.39
Median time per request:    368.22ms
99th percentile time:        775.90ms
Slowest time for request:    1479.00ms
=============================DATA=============================
Total response body sizes:        501200000
Avg response body per request:        5012.00 Byte
Transfer rate per second:        5038989.99 Byte/s (5.04 MByte/s)
==========================RESPONSES==========================
20X Responses:        100000    (100.00%)
30X Responses:        0    (0.00%)
40X Responses:        0    (0.00%)
50X Responses:        0    (0.00%)
Errors:                  0    (0.00%)

结果解释：
关于接口/test/query，

每秒可以处理1005次请求(即 QPS)；
每秒传输5.04MB数据(吞吐量)；
响应码为20x开头的请求为 100%, 即没有发生业务之外的错误(比如 502);
%99 的请求的平均处理时间为775.90ms。
其他的一些数据也可以比较直观的看到，比如测试总用时和最长的耗时等。

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](https://blog.csdn.net/moxiaomomo/article/details/107851892)

Go每日一库

每日一库之102：go-wrk

安装 go-wrk

go-wrk 选项说明

使用