AB(1)

NAME
ab - Apache HTTP 伺服器效能測試工具

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 器配合的效能如何

選項 OPTIONS

-A auth-username:password
     支援基本的驗證證書,使用者名稱和密碼之間使用"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援401認證.

-c concurrency
     同時向伺服器端傳送的請求數目，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.此引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傳送帶有HTTP POST 的請求.

-P proxy-auth-username:password
    當需要通過代理測試一臺HTTP 伺服器的時候而你的代理 又需要使用者名稱密碼驗證,這時你可以使用這個選項,同樣 使用者名稱與密碼之間使用冒號":"分隔開,ab將之以明文的方式 傳送出去,當然,前提是你的代理是處於407認證狀態的

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

-T content-type
    內容型別標頭,使用在POST資料的時候.

-v verbosity
    設定冗餘級別,4級打印出每個請求標頭的詳細資訊, 3級打印出回應程式碼(例如,404,200),2級打印出警告 資訊和指示訊息

-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 這裡 >

-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

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跋
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