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

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ab 参数:

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

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Options are:51Testing软件测试网9F*MhFmc k

§ -n requests Number of requests to perform

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§ -c concurrency Number of multiple requests to make51Testing软件测试网]#z&W{,]E

§ -t timelimit Seconds to max. wait for responses51Testing软件测试网9M [XdP;N3`6Dv'a

§ -p postfile File containg data to POST51Testing软件测试网b:^.K/{vW"{

§ -T content-type Content-type header for POSTing

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§ -v verbosity How much troubleshooting info to print

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§ -w Print out results in HTML tables51Testing软件测试网j*R$V4Ds2o
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§ -i Use HEAD instead of GET51Testing软件测试网'vW~S#Gya

§ -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t-S
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§ -z attributes String to insert as td or th attributes51Testing软件测试网7rT/]kq^5w4G:[-|\
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§ -C attribute Add cookie, eg. 'Apache=1234' (repeatable)51Testing软件测试网;|A;iyV$X

§ -H attribute Add Arbitrary header line, eg. 'Accept-Encoding: zop'51Testing软件测试网DZ6TuJb

§ 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z,ai'C]#^z(s

§ -P attribute Add Basic Proxy Authentication, the attributes51Testing软件测试网5e3l2S6? o

§ 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2e;@l `%j3d

§ -V Print version number and exit51Testing软件测试网
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§ -k Use HTTP KeepAlive feature51Testing软件测试网6C5c&Vy)K

§ -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.

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§ -e filename Output CSV file with percentages served51Testing软件测试网-L3x#PGiu3h\]

§ -s Use httpS instead of HTTP (SSL)

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§ -h Display usage information (this message)51Testing软件测试网8u+o`I,j,q7I

ab 使用

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ab使用范例: 

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要执行 1000 次的 connection, 20 次的 concurrent (并行, 同时):

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语法: ab -n 1000 -c 20 http://localhost/51Testing软件测试网a e8|;J)Q3b5C}1tP

产生出来的结果. 要注意的是以下几个:51Testing软件测试网&Pi*I)M P4I$@V S|&Aw

§ Time taken for tests: 总共执行花了多久的时间.(以上 1000 次共多久)51Testing软件测试网J)KO/Kt;z.}n

§ Requests per second: 每秒平均可以处理多少个 connection.

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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