最簡單的方法：
yum install httpd-tools安裝成功後直接敲運行 ab 即可
[root@ai abtest]# ab -n 1000 -c 100 http://xshare.cn/p/63
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 m.reactshare.cn (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests
Server Software: nginx
Server Hostname: xshare.cn
Server Port: 80
Document Path: /p/63
Document Length: 4515 bytes
Concurrency Level: 100
Time taken for tests: 25.022 seconds
Complete requests: 1000
Failed requests: 0
Write errors: 0
Total transferred: 5511092 bytes
HTML transferred: 4515000 bytes
Requests per second: 39.96 [#/sec] (mean)
Time per request: 2502.213 [ms] (mean)
Time per request: 25.022 [ms] (mean, across all concurrent requests)
Transfer rate: 215.09 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 5 15.6 0 55
Processing: 23 2370 1018.9 2226 11892
Waiting: 16 2370 1019.0 2226 11889
Total: 23 2375 1014.4 2226 11905
Percentage of the requests served within a certain time (ms)
50% 2226
66% 2428
75% 2528
80% 2565
90% 2948
95% 3283
98% 3522
99% 7168
100% 11905 (longest request)
