本地使用 wrk 压测 nginx 的一个 hello,world!接口。wrk 的 qps 是 20 多万，全部 200 状态吗，无异常。ab 结果是 1 万多的 qps，locust 只有 6 千多的 qps。本机 32 核 CPU,结果差异这么大，请问该相信哪个呢？
下面是压测过程：
- wrk
./wrk -c 10000 -d 20 http://localhost:8080/status
Running 20s test @ http://localhost:8080/status
2 threads and 10000 connections
Thread Stats Avg Stdev Max /- Stdev
Latency 2.51ms 654.52us 14.36ms 90.56%
Req/Sec 105.08k 6.58k 133.08k 72.08%
4150775 requests in 20.10s, 783.58MB read
Socket errors: connect 8981, read 0, write 0, timeout 0
Requests/sec: 206509.01
Transfer/sec: 38.98MB
查看请求数量cat access.log|wc -l，结果4089174，打开检查都是 200 状态吗，无错误。ab 压测-c 10000 报错，为了一致，使用 wrk 压测-c 1000,qps 的值为216547.69。
- ab
ab -c 1000 -n 200000 http://localhost:8080/status
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking localhost (be patient)
Completed 20000 requests
Completed 40000 requests
Completed 60000 requests
Completed 80000 requests
Completed 100000 requests
Completed 120000 requests
Completed 140000 requests
Completed 160000 requests
Completed 180000 requests
Completed 200000 requests
Finished 200000 requests
Server Software: openresty/1.13.6.1
Server Hostname: localhost
Server Port: 8080
Document Path: /status
Document Length: 12 bytes
Concurrency Level: 1000
Time taken for tests: 18.040 seconds
Complete requests: 200000
Failed requests: 0
Total transferred: 31000000 bytes
HTML transferred: 2400000 bytes
Requests per second: 11086.72 [#/sec] (mean)
Time per request: 90.198 [ms] (mean)
Time per request: 0.090 [ms] (mean, across all concurrent requests)
Transfer rate: 1678.17 [Kbytes/sec] received
Connection Times (ms)
min mean[ /-sd] median max
Connect: 0 40 51.9 37 1048
Processing: 1 50 11.8 49 243
Waiting: 1 37 13.2 33 221
Total: 2 90 52.7 89 1104
Percentage of the requests served within a certain time (ms)
50% 89
66% 91
75% 93
80% 94
90% 99
95% 104
98% 113
99% 129
100% 1104 (longest request)
加上 -k参数 qps 就只有 9800。
- locust
启动了一个 master，28 个 slave，结果 qps 只有 6700 左右，请问哪个比较接近真实？
接口就是直接安装 openresty,无优化，配置里面 echo "hello，world!"
