一、ab压力测试

# ab ‐c 100 ‐n 1000 http://vedio.linux.com/index.html
2 This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
3 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
4 Licensed to The Apache Software Foundation, http://www.apache.org/
5
6 Benchmarking vedio.linux.com (be patient)
7 Completed 100 requests
8 Completed 200 requests
9 Completed 300 requests
10 Completed 400 requests
11 Completed 500 requests
12 Completed 600 requests
13 Completed 700 requests
14 Completed 800 requests
15 Completed 900 requests
16 Completed 1000 requests
17 Finished 1000 requests
18
19
20 Server Software: Apache
21 Server Hostname: vedio.linux.com
22 Server Port: 80
23
24 Document Path: /index.html
25 Document Length: 17 bytes
26
27 Concurrency Level: 100 //并发连接数
28 Time taken for tests: 1.252 seconds //服务器完成所有请求的花费的时间 【重要指标】
29 Complete requests: 1000
30 Failed requests: 0
31 Write errors: 0
32 Total transferred: 268000 bytes //传输了多少字节的数据; 真实数据+http首部
33 HTML transferred: 17000 bytes //传输了多少字节的数据; 真实数据
34 Requests per second: 798.78 [#/sec] (mean) //每秒处理的请求数， 吞吐率;【重要指标】
35 Time per request: 125.190 [ms] (mean) //用户平均请求等待时间，单位ms 【重要指标】
36 Time per request: 1.252 [ms] (mean, across all concurrent requests) //用户请求的处理时间 【重要指标】
37 Transfer rate: 209.06 [Kbytes/sec] received //衡量带宽 【重要指标】
38
39 Connection Times (ms)
40 min mean[+/‐sd] median max
41 Connect: 0 7 11.9 2 56
42 Processing: 4 114 66.7 108 1071
43 Waiting: 2 96 46.0 93 1071
44 Total: 6 121 68.3 111 1104
45
46 Percentage of the requests served within a certain time (ms)
47 50% 111
48 66% 124
49 75% 140
50 80% 151
51 90% 174
52 95% 194
53 98% 267
54 99% 301
55 100% 1104 (longest request)