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NAME

       ab - Apache HTTP 伺服器性能測試工具

總覽 SYNOPSIS

       ab  [  -A auth-username:password ] [ -c concurrency ] [ -C cookie-name=value ] [ -d ] [ -e
       csv-file ] [ -g gnuplot-file ] [ -h ] [ -H custom-header ] [ -i ] [ -k ] [ -n requests ] [
       -p POST-file ] [ -P proxy-auth-username:password ] [ -q ] [ -s ] [ -S ] [ -t timelimit ] [
       -T content-type ] [ -v verbosity]  [  -V  ]  [  -w  ]  [  -x  <table>-attributes  ]  [  -X
       proxy[:port] ] [ -y <tr>-attributes ] [ -z <td>-attributes ] [http://]hostname[:port]/path

描述 SUMMARY

       ab                 是一個測試你Apache                 http伺服器的工具,你可以通過這個工具
       指定一個單位時間內向apache發出的請求數量來看看你的Apache和機 器配合的性能如何

選項 OPTIONS

       -A auth-username:password
               支持基本的驗証証書,使用者名和密碼之間使用"冒號"                                  :
              分隔開,ab將以明文方式傳送過去.不管伺服器是不是需要
              ,也就是說你的伺服器需要支持401認証.

       -c concurrency
               同時向伺服器端發送的請求數目,預設狀態下是一次 只執行一個http請求.

       -C cookie-name=value
              Add 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-file
              Write  a  Comma separated value (CSV) file which contains for each percentage (from
              1% to 100%) the time (in milli seconds) 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-file
              Write 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 Excell. The labels are on the first line of the file.

       -h     顯示使用說明

       -H custom-header
              向請求包追加附加的標題字串.此參數應該是有效的標題                         行(header
              line)形式,通常使用冒號":"來分隔有效配對    (valid    pair)例如    'Accept-Encoding:
              zip/zop;8 bit';

       -i     使用一個 http 頭(HEAD) 來替換 GET方法.不可以摻入POST 方法

       -k     允許http           KeepAlive           ;也就是說執行多個請求在一個            http
              會話當中,預設是不允許的也就是no KeepAlive啦;)

       -n requests
              執行一次測試會話的時候所發出的請求數目,預設是執行一個單一的請求
              當然了這樣的測試結果也就沒什麼意義了

       -p POST-file
              測試程式也就是ab,將向Apache server發送帶有HTTP POST 的請求.

       -P proxy-auth-username:password
              當需要通過代理測試一台HTTP                                   伺服器的時候而你的代理
              又需要使用者名密碼驗証,這時你可以使用這個選項,同樣
              使用者名與密碼之間使用冒號":"分隔開,ab將之以明文的方式
              發送出去,當然,前提是你的代理是處於407認証狀態的

       -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
               設置測試的時間的長短,使用這個選項ab將自動設置
              測試請求會話數目為50000,然後以你設置的時間為
              固定周期.預設狀態下是沒有時限的,也就是直到完成 你所設置的請求數目為止.

       -T content-type
              內容類型標頭,使用在POST數據的時候.

       -v verbosity
              設置冗餘級別,4級列印出每個請求標頭的詳細信息,
              3級列印出回應代碼(例如,404,200),2級列印出警告 信息和指示消息

       -V     顯示版本號並且退出

       -w     列印輸出結果到HTML表中. 預設的表是兩列n行白底黑框

       -x <table>-attributes
              使用字串來描述表的屬性,該屬性字串應該插入到<table 這裏 >

       -X proxy[:port]
              Use a proxy server for the requests.

       -y <tr>-attributes
              用於生成html表格每行的屬性名 (<tr>)

       -z <td>-attributes
              用於生成html表格每列的屬性名 (<td>)

BUGS

       There are various statically declared buffers of fixed  length.  Combined  with  the  lazy
       parsing  of  the  command  line  arguments, the response headers from the server and other
       external inputs, this might bite you.

       It does not implement HTTP/1.x fully; only accepts some 'expected' forms of responses. The
       rather  heavy use of strstr(3) shows up top in profile, which might indicate a performance
       problem; i.e., you would measure the ab performance rather than the server's.

參見 SEE ALSO

       httpd(8)

[中文版維護人]

       trcbilg <email>

[中文版最新更新]

       2003.11.22

《中國linux論壇man手冊翻譯計劃》:

       http://cmpp.linuxforum.net