apache bench的使用

1 输入参数

运行参数

简写	名称	意义
-n	requests	Number of requests to perform
-c	concurrency	Number of multiple requests to make（最大为1024）
-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
-h		Display usage information (this message)

举例：ab –n 1000 –c 10 http://localhost:8080/test/index.jsp

表示向本机8080端口发送1000个请求，并发数为10

2 输出及解析

This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0

Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Copyright 1997-2005 The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient).....done

Server Software:        Apache-Coyote/1.1

Server Hostname:        localhost

Server Port:            8080

Document Path:          /test/index.jsp

Document Length:        163 bytes

Concurrency Level:      10

/*整个测试持续的时间*/

Time taken for tests:   1.344 seconds

/*完成的请求数量*/

Complete requests:      1000

/*失败的请求数量*/

Failed requests:        0

Write errors:           0

/*整个场景中的网络传输量*/

Total transferred:      388000bytes

/*整个场景中的HTML内容传输量*/

HTML transferred:       163000 bytes

/*每秒事务数，后面括号中的 mean 表示这是一个平均值*/

Requests per second:    744.19 [#/sec] (mean)

/* 平均事务响应时间，后面括号中的 mean 表示这是一个平均值*/

Time per request:       13.438 [ms] (mean)

/*平均事物响应时间/并发数 */

Time per request:       1.344 [ms] (mean, across all concurrent requests)

/*平均每秒网络上的流量，可以帮助排除是否存在网络流量过大导致响应时间延长的问题*/

Transfer rate:          281.98 [Kbytes/sec] received

/*网络上消耗的时间的分解*/

Connection Times (ms)

min  mean[ + / - sd ] median   max

Connect:       20  318 926.1     30    2954

Processing:    40 2160 1462.0   3034    3154

Waiting:       40 2160 1462.0   3034    3154

Total:         60 2479 1276.4   3064    3184

/*整个场景中所有请求的响应情况。在场景中每个请求都有一个响应时间，其中 50％ 的用户响应时间小于 3064 毫秒，60 ％ 的用户响应时间小于 3094 毫秒，最大的响应时间小于 3184 毫秒*/

Percentage of the requests served within a certain time (ms)

  50%   16

  66%   16

  75%   16

  80%   16

  90%   16

  95%   31

  98%   94

  99%   313

100%   328 (longest request)