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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  >

       -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