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# **ab**
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## 说明
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**ab命令** 是Apache的Web服务器的性能测试工具，它可以测试安装Web服务器每秒种处理的HTTP请求
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### 选项
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```markdown
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-A：指定连接服务器的基本的认证凭据
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-c：指定一次向服务器发出请求数
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-C：添加cookie
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-g：将测试结果输出为“gnuolot”文件
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-H：为请求追加一个额外的头
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-i：使用“head”请求方式
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-k：激活HTTP中的“keepAlive”特性
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-n：指定测试会话使用的请求数
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-p：指定包含数据的文件
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-q：不显示进度百分比
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-T：使用POST数据时，设置内容类型头
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-v：设置详细模式等级
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-w：以HTML表格方式打印结果
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-x：以表格方式输出时，设置表格的属性
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-X：使用指定的代理服务器发送请求
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-y：以表格方式输出时，设置表格属性
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```
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用法: ab [选项] [http[s]://]hostname[:port]/path
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选项:
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-n requests 执行请求的数量
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-c concurrency 一次进行多少个并发请求
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-t timelimit Seconds to max. to spend on benchmarking
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This implies -n 50000
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-s timeout Seconds to max. wait for each response
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Default is 30 seconds
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-b windowsize Size of TCP send/receive buffer, in bytes
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-B address Address to bind to when making outgoing connections
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-p postfile File containing data to POST. Remember also to set -T
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-u putfile File containing data to PUT. Remember also to set -T
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-T content-type Content-type header to use for POST/PUT data, eg.
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'application/x-www-form-urlencoded'
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Default is 'text/plain'
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-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 GET
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-x attributes String to insert as table attributes
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-y attributes String to insert as tr attributes
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-z attributes String to insert as td or th attributes
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-C attribute Add cookie, eg. 'Apache=1234'. (repeatable)
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-H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip'
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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.
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-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 use
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-V Print version number and exit
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-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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-q Do not show progress when doing more than 150 requests
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-g filename Output collected data to gnuplot format file.
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-e filename Output CSV file with percentages served
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-r Don't exit on socket receive errors.
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-h Display usage information (this message)
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-Z ciphersuite Specify SSL/TLS cipher suite (See openssl ciphers)
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-f protocol Specify SSL/TLS protocol
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(SSL3, TLS1, TLS1.1, TLS1.2 or ALL)
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