推荐：Apache 压力测试工具ab

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关于压力测试，

很多同学只知道LR、jmeter

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在 Apache 有个叫 ab(ApacheBench) 的程序, 此程序是专门用在做压力测试用的软件. ApacheBench(ab) 用来测试 apache 执行效率，可以用来测试网站的压力工具.

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ab 参数51Testing软件测试网4vK*I0{$}dQW#y6R'Hp

ab 参数:

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Usage: /usr/sbin/ab [options] [http[s]://]hostname[:port]/path

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Options are:

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§ -n requests Number of requests to perform

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§ -c concurrency Number of multiple requests to make51Testing软件测试网/y z}:EM(v;l'x

§ -t timelimit Seconds to max. wait for responses51Testing软件测试网:C^\!GM"T-m~0R

§ -p postfile File containg data to POST

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§ -T content-type Content-type header for POSTing51Testing软件测试网a}` T`9V

§ -v verbosity How much troubleshooting info to print

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§ -w Print out results in HTML tables

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§ -i Use HEAD instead of GET51Testing软件测试网&Z,g(kS?"E

§ -x attributes String to insert as table attributes

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§ -y attributes String to insert as tr attributes51Testing软件测试网1b6Zn I%^

§ -z attributes String to insert as td or th attributes51Testing软件测试网0@ V;D+JS(GK@+C

§ -C attribute Add cookie, eg. 'Apache=1234' (repeatable)

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§ -H attribute Add Arbitrary header line, eg. 'Accept-Encoding: zop'

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§ Inserted after all normal header lines. (repeatable)

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§ -A attribute Add Basic WWW Authentication, the attributes

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§ are a colon separated username and password.51Testing软件测试网9DA:U&K,ZE

§ -P attribute Add Basic Proxy Authentication, the attributes

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§ are a colon separated username and password.

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§ -X proxy:port Proxyserver and port number to use51Testing软件测试网 F"R*R3A'\%V

§ -V Print version number and exit51Testing软件测试网,o4ER4\S!Oy'b H

§ -k Use HTTP KeepAlive feature

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§ -d Do not show percentiles served table.

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§ -S Do not show confidence estimators and warnings.

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§ -g filename Output collected data to gnuplot format file.51Testing软件测试网%YHTwK B

§ -e filename Output CSV file with percentages served

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§ -s Use httpS instead of HTTP (SSL)

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§ -h Display usage information (this message)51Testing软件测试网-PI6a0W)aI

ab 使用51Testing软件测试网9DYO#Z^p9_&B

ab使用范例: 

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要执行 1000 次的 connection, 20 次的 concurrent (并行, 同时):51Testing软件测试网 l3u$R hJD

语法: ab -n 1000 -c 20 http://localhost/

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产生出来的结果. 要注意的是以下几个:

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§ Time taken for tests: 总共执行花了多久的时间.(以上 1000 次共多久)

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§ Requests per second: 每秒平均可以处理多少个 connection.51Testing软件测试网&R0R;}!G3K3\

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具体有兴趣，大家可以研究下

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ab 可运行在linux  & windows平台～

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最后，

apache的ab工具也算是一种ddos攻击工具