ApacheBench(ab)使用简介 ApacheBench 主要是用来测试阿帕奇服务器执行效率用的。安装好 apache 服务器套件后，进入 bin 目录，就可以找到该可执行文件 ab.exe 。         ApacheBench 可以针对某一特定 URL 模拟出连续的联机请求，同时还可以仿真出同时间点个数相同的联机请求，因而利用 ApacheBench 可帮助我们在网站开发期间仿真实际上线可能的情况，利用仿真出来的数据做为调整服务器设定或程序的依据。ab 用法如下Usage: ab [options] [http[s]://]hostname[:port]/path Options are:     -n requests     Number of requests to perform # 请求次数     -c concurrency  Number of multiple requests to make ＃同一时间发出多少个请求（并行连接）     -t timelimit    Seconds to max. wait for responses     -p postfile     File containing data to POST     -T content-type Content-type header for POSTing     -v verbosity    How much troubleshooting info to print     -w              Print out results in HTML tables     -i              Use HEAD instead of GET     -x attributes   String to insert as table attributes     -y attributes   String to insert as tr attributes     -z attributes   String to insert as td or th attributes     -C attribute    Add cookie, eg. 'Apache=1234. (repeatable)     -H attribute    Add Arbitrary header line, eg. 'Accept-Encoding: gzip'                     Inserted after all normal header lines. (repeatable)     -A attribute    Add Basic WWW Authentication, the attributes                     are a colon separated username and password.     -P attribute    Add Basic Proxy Authentication, the attributes                     are a colon separated username and password.     -X proxy:port   Proxyserver and port number to use     -V              Print version number and exit     -k              Use HTTP KeepAlive feature     -d              Do not show percentiles served table.     -S              Do not show confidence estimators and warnings.     -g filename     Output collected data to gnuplot format file.     -e filename     Output CSV file with percentages served     -s              Use httpS instead of HTTP (SSL)     -h              Display usage information (this message)基本用法 : ab -n 全部请求数 -c 并发数 测试 url 例 :ab -n 1000 -c 50 http://www.abc.com/a.php 得到结果类似于 ( 后面颜色字为中文翻译 ): Server Software:        Apache/2.0.55 Server Hostname:        localhost Server Port:            80 Document Path:          /1.php Document Length:        82522 bytes  # 请求文档大小 Concurrency Level:      50           # 并发数 Time taken for tests:   92.76140 seconds # 全部请求完成耗时 Complete requests:      10000          # 全部请求数 Failed requests:        1974           # 失败的请求   (Connect: 0, Length: 1974, Exceptions: 0) Write errors:           0 Total transferred:      827019400 bytes   # 总传输大小 HTML transferred:       825219400 bytes Requests per second:    108.61 [#/sec] (mean)   # 每秒请求数 ( 平均 ) Time per request:       460.381 [ms] (mean)   # 每次并发请求时间 ( 所有并发 ) Time per request:       9.208 [ms] (mean, across all concurrent requests)   # 每一请求时间 ( 并发平均 )   Transfer rate:          8771.39 [Kbytes/sec] received    # 传输速率 Connection Times (ms)    # 连接时间              min  mean[+/-sd] median   max Connect(# 连接 ):        0    0   2.1      0      46 Processing(# 处理 ):    31  458  94.7    438    1078 Waiting(# 等待 ):       15  437  87.5    422     938 Total:         31  458  94.7    438    1078 其它参数 : -n requests     全部请求数 -c concurrency   并发数 -t timelimit     最传等待回应时间 -p postfile     POST 数据文件 -T content-type POST Content-type -v verbosity    How much troubleshooting info to print -w              Print out results in HTML tables -i              Use HEAD instead of GET -x attributes   String to insert as table attributes -y attributes   String to insert as tr attributes -z attributes   String to insert as td or th attributes -C attribute     加入 cookie, eg. 'Apache=1234. (repeatable) -H attribute     加入 http 头 , eg. 'Accept-Encoding: gzip'                 Inserted after all normal header lines. (repeatable) -A attribute    http 验证 , 分隔传递用户名及密码 -P attribute    Add Basic Proxy Authentication, the attributes                 are a colon separated username and password. -X proxy:port   代理服务器 -V               查看 ab 版本 -k              Use HTTP KeepAlive feature -d              Do not show percentiles served table. -S              Do not show confidence estimators and warnings. -g filename     Output collected data to gnuplot format file. -e filename     Output CSV file with percentages served -h              Display usage information (this message)