apache的ab小工具
来源:互联网 发布:mac word 简体转繁体 编辑:程序博客网 时间:2024/04/20 11:06
ab的全称是ApacheBench,是 Apache 附带的一个小工具,专门用于 HTTP Server 的benchmark testing,可以同时模拟多个并发请求。前段时间看到公司的开发人员也在用它作一些测试,看起来也不错,很简单,也很容易使用,所以今天花一点时间看了一下。
通过下面的一个简单的例子和注释,相信大家可以更容易理解这个工具的使用。
一个简单的例子
/*在这个例子的一开始,我执行了这样一个命令 ab -n 10 -c 10 http://www.google.com/。这个命令的意思是启动 ab ,向 www.google.com 发送10个请求(-n 10) ,并每次发送10个请求(-c 10)——也就是说一次都发过去了。跟着下面的是 ab 输出的测试报告,红色部分是我添加的注释。*/
C:/Program Files/Apache Software Foundation/Apache2.2/bin>ab -n 10 -c 10 http
://www.google.com/
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 www.google.com (be patient).....done
Server Software: GWS/2.1
Server Hostname: www.google.com
Server Port: 80
Document Path: /
Document Length: 230 bytes
Concurrency Level: 10
/*整个测试持续的时间*/
Time taken for tests: 3.234651 seconds
/*完成的请求数量*/
Complete requests: 10
/*失败的请求数量*/
Failed requests: 0
Write errors: 0
Non-2xx responses: 10
Keep-Alive requests: 10
/*整个场景中的网络传输量*/
Total transferred: 6020 bytes
/*整个场景中的HTML内容传输量*/
HTML transferred: 2300 bytes
/*大家最关心的指标之一,相当于 LR 中的每秒事务数,后面括号中的 mean 表示这是一个平均值*/
Requests per second: 3.09 [#/sec] (mean)
/*大家最关心的指标之二,相当于 LR 中的平均事务响应时间,后面括号中的 mean 表示这是一个平均值*/
Time per request: 3234.651 [ms] (mean)
/*这个还不知道是什么意思,有知道的朋友请留言,谢谢 ^_^ */
Time per request: 323.465 [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: 1.55 [Kbytes/sec] received
/*网络上消耗的时间的分解,各项数据的具体算法还不是很清楚*/
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
/*下面的内容为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% 3064
66% 3094
75% 3124
80% 3154
90% 3184
95% 3184
98% 3184
99% 3184
100% 3184 (longest request)
更多信息
ab 不像 LR 那么强大,但是它足够轻便,如果只是在开发过程中想检查一下某个模块的响应情况,或者做一些场景比较简单的测试,ab 还是一个不错的选择——至少不用花费很多时间去学习 LR 那些复杂的功能,就更别说那 License 的价格了。
下面是 ab 的详细参数解释,大家有兴趣的可以研究一下,最近没有足够多的时间研究,如果哪位朋友有兴趣希望可以帮忙翻译一下每个参数的含义,有问题讨论也欢迎在这里回帖 ^_^
ab
[ -
Aauth-username:
password ] [ -
cconcurrency ] [ -
Ccookie-name=
value ] [ -
d ] [ -
ecsv-file ] [ -
ggnuplot-file ] [ -
h ] [ -
Hcustom-header ] [ -
i ] [ -
k ] [ -
nrequests ] [ -
pPOST-file ] [ -
Pproxy-auth-username:
password ] [ -
q ] [ -
s ] [ -
S ] [ -
ttimelimit ] [ -
Tcontent-type ] [ -
vverbosity] [ -
V ] [ -
w ] [ -
x<table>-attributes ] [ -
Xproxy[:
port] ] [ -
y<tr>-attributes ] [ -
z<td>-attributes ] [http://]
hostname[:
port]/
path-A
auth-username:
passwordSupply BASIC Authentication credentials to the server. The username and password are separated by a single
:
and sent on the wire base64 encoded. The string is sent regardless of whether the server needs it (i.e., has sent an 401 authentication needed). -c
concurrencyNumber of multiple requests to perform at a time. Default is one request at a time.
-C
cookie-name=
valueAdd a
Cookie:
line to the request. The argument is typically in the form of a name=
value pair. This field is repeatable. -d
Do not display the "percentage served within XX [ms] table". (legacy support).
-e
csv-fileWrite a Comma separated value (CSV) file which contains for each percentage (from 1% to 100%) the time (in milliseconds) it took to serve that percentage of the requests. This is usually more useful than the 'gnuplot' file; as the results are already 'binned'.
-g
gnuplot-fileWrite all measured values out as a 'gnuplot' or TSV (Tab separate values) file. This file can easily be imported into packages like Gnuplot, IDL, Mathematica, Igor or even Excel. The labels are on the first line of the file.
-h
Display usage information.
-H
custom-headerAppend extra headers to the request. The argument is typically in the form of a valid header line, containing a colon-separated field-value pair (i.e.,
"Accept-Encoding: zip/zop;8bit"
). -i
Do
HEAD
requests instead of GET
. -k
Enable the HTTP KeepAlive feature, i.e., perform multiple requests within one HTTP session. Default is no KeepAlive.
-n
requestsNumber of requests to perform for the benchmarking session. The default is to just perform a single request which usually leads to non-representative benchmarking results.
-p
POST-fileFile containing data to POST.
-P
proxy-auth-username:
passwordSupply BASIC Authentication credentials to a proxy en-route. The username and password are separated by a single
:
and sent on the wire base64 encoded. The string is sent regardless of whether the proxy needs it (i.e., has sent an 407 proxy authentication needed). -q
When processing more than 150 requests,
ab
outputs a progress count on stderr
every 10% or 100 requests or so. The -q
flag will suppress these messages. -s
When compiled in (
ab -h
will show you) use the SSL protected https
rather than the http
protocol. This feature is experimental and very rudimentary. You probably do not want to use it. -S
Do not display the median and standard deviation values, nor display the warning/error messages when the average and median are more than one or two times the standard deviation apart. And default to the min/avg/max values. (legacy support).
-t
timelimit - apache的ab小工具
- 开源压力测试的小工具Apache 下的ab
- ab小工具的Failed requests多的问题
- java web开发总结(四):apache自带压力测试小工具ab(apache benchmark)
- nginx 安装ab小工具方法
- 方便的小工具
- xorg的小工具
- 有意思的小工具
- 整理的小工具
- 实用的小工具
- 小工具的使用
- Apache ab的使用
- Apache的AB测试
- 【小工具】仿站小工具的使用及下载
- 防RSI的小工具
- 无处不在的网络小工具
- 清除系统的小工具
- 取证的简单小工具
- 提高Java代码可重用性的三个措施
- C#中计算质数的算法
- 编写跨平台Java程序注意事项
- 求数值在 1 - 50 之内的任意5个数之和为100 。数值:1,2,3,4,5,6....48,49,50,取其中的任意5个数,但这5个数相加之和要等于100,并将所有这种组合罗列.
- ASP.NET2.0自定义控件开发(4) ----给控件添加树状属性
- apache的ab小工具
- c#设计模式之组合模式(composition pattern)
- RemObject解决自动生成代码的想法.
- UPnP中Control Point的基本流程(转)
- 口语的十八大佛脚
- 关于Peercast源代码的分析
- 软件人机界面设计的重要性及发展趋势
- 富人和穷人的12个经典差异
- 编程修养 haoel(原作)