> # 性能测试
<br/>
> 在一台4核(e5)8G服务器测试打印hello world性能如下，100000个请求，500并发，QPS达到了27000+，性能非常高！
```
[root@VM_0_28_centos www]# ab -n100000 -c500 127.0.0.1:7777/index/index/intro
This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient)
Completed 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests
Server Software: swoole-http-server
Server Hostname: 127.0.0.1
Server Port: 7777
Document Path: /index/index/intro
Document Length: 11 bytes
Concurrency Level: 500
Time taken for tests: 3.623 seconds
Complete requests: 100000
Failed requests: 0
Write errors: 0
Total transferred: 17400000 bytes
HTML transferred: 1100000 bytes
Requests per second: 27602.52 [#/sec] (mean)
Time per request: 18.114 [ms] (mean)
Time per request: 0.036 [ms] (mean, across all concurrent requests)
Transfer rate: 4690.27 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 2.4 3 23
Processing: 1 15 5.8 14 48
Waiting: 1 13 5.8 12 48
Total: 2 18 5.7 18 50
Percentage of the requests served within a certain time (ms)
50% 18
66% 20
75% 21
80% 22
90% 25
95% 28
98% 33
99% 36
100% 50 (longest request)
```
