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+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ This file is generated from xml source: DO NOT EDIT
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ -->
+<title>ab - Apache HTTP server benchmarking tool - Apache HTTP Server</title>
+<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
+<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
+<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" />
+<link href="../images/favicon.ico" rel="shortcut icon" /></head>
+<body id="manual-page"><div id="page-header">
+<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
+<p class="apache">Apache HTTP Server Version 2.0</p>
+<img alt="" src="../images/feather.gif" /></div>
+<div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
+<div id="path">
+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.0</a> &gt; <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>ab - Apache HTTP server benchmarking tool</h1>
+<div class="toplang">
+<p><span>Available Languages: </span><a href="../en/programs/ab.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../ko/programs/ab.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="../tr/programs/ab.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div>
+
+ <p><code>ab</code> is a tool for benchmarking your Apache Hypertext
+ Transfer Protocol (HTTP) server. It is designed to give you an impression
+ of how your current Apache installation performs. This especially shows
+ you how many requests per second your Apache installation is capable of
+ serving.</p>
+</div>
+<div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#synopsis">Synopsis</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#bugs">Bugs</a></li>
+</ul><h3>See also</h3><ul class="seealso"><li><code class="program"><a href="../programs/httpd.html">httpd</a></code></li></ul></div>
+<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="synopsis" id="synopsis">Synopsis</a></h2>
+ <p><code><strong>ab</strong>
+ [ -<strong>A</strong> <var>auth-username</var>:<var>password</var> ]
+ [ -<strong>c</strong> <var>concurrency</var> ]
+ [ -<strong>C</strong> <var>cookie-name</var>=<var>value</var> ]
+ [ -<strong>d</strong> ]
+ [ -<strong>e</strong> <var>csv-file</var> ]
+ [ -<strong>g</strong> <var>gnuplot-file</var> ]
+ [ -<strong>h</strong> ]
+ [ -<strong>H</strong> <var>custom-header</var> ]
+ [ -<strong>i</strong> ]
+ [ -<strong>k</strong> ]
+ [ -<strong>n</strong> <var>requests</var> ]
+ [ -<strong>p</strong> <var>POST-file</var> ]
+ [ -<strong>P</strong> <var>proxy-auth-username</var>:<var>password</var> ]
+ [ -<strong>q</strong> ]
+ [ -<strong>s</strong> ]
+ [ -<strong>S</strong> ]
+ [ -<strong>t</strong> <var>timelimit</var> ]
+ [ -<strong>T</strong> <var>content-type</var> ]
+ [ -<strong>v</strong> <var>verbosity</var>]
+ [ -<strong>V</strong> ]
+ [ -<strong>w</strong> ]
+ [ -<strong>x</strong> <var>&lt;table&gt;-attributes</var> ]
+ [ -<strong>X</strong> <var>proxy</var>[:<var>port</var>] ]
+ [ -<strong>y</strong> <var>&lt;tr&gt;-attributes</var> ]
+ [ -<strong>z</strong> <var>&lt;td&gt;-attributes</var> ]
+ [http://]<var>hostname</var>[:<var>port</var>]/<var>path</var></code></p>
+</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="options" id="options">Options</a></h2>
+ <dl>
+ <dt><code>-A <var>auth-username</var>:<var>password</var></code></dt>
+ <dd>Supply BASIC Authentication credentials to the server. The username and
+ password are separated by a single <code>:</code> and sent on the wire
+ base64 encoded. The string is sent regardless of whether the server needs
+ it (<em>i.e.</em>, has sent an 401 authentication needed).</dd>
+
+ <dt><code>-c <var>concurrency</var></code></dt>
+ <dd>Number of multiple requests to perform at a time. Default is one
+ request at a time.</dd>
+
+ <dt><code>-C <var>cookie-name</var>=<var>value</var></code></dt>
+ <dd>Add a <code>Cookie:</code> line to the request. The argument is
+ typically in the form of a <code><var>name</var>=<var>value</var></code>
+ pair. This field is repeatable.</dd>
+
+ <dt><code>-d</code></dt>
+ <dd>Do not display the "percentage served within XX [ms] table". (legacy
+ support).</dd>
+
+ <dt><code>-e <var>csv-file</var></code></dt>
+ <dd>Write a Comma separated value (CSV) file which contains for each
+ percentage (from 1% to 100%) the time (in milliseconds) it took to serve
+ that percentage of the requests. This is usually more useful than the
+ 'gnuplot' file; as the results are already 'binned'.</dd>
+
+ <dt><code>-g <var>gnuplot-file</var></code></dt>
+ <dd>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 Excel. The labels are on the first line of
+ the file. </dd>
+
+ <dt><code>-h</code></dt>
+ <dd>Display usage information.</dd>
+
+ <dt><code>-H <var>custom-header</var></code></dt>
+ <dd>Append extra headers to the request. The argument is typically in
+ the form of a valid header line, containing a colon-separated field-value
+ pair (<em>i.e.</em>, <code>"Accept-Encoding: zip/zop;8bit"</code>).</dd>
+
+ <dt><code>-i</code></dt>
+ <dd>Do <code>HEAD</code> requests instead of <code>GET</code>.</dd>
+
+ <dt><code>-k</code></dt>
+ <dd>Enable the HTTP KeepAlive feature, <em>i.e.</em>, perform multiple
+ requests within one HTTP session. Default is no KeepAlive.</dd>
+
+ <dt><code>-n <var>requests</var></code></dt>
+ <dd>Number of requests to perform for the benchmarking session. The default
+ is to just perform a single request which usually leads to
+ non-representative benchmarking results.</dd>
+
+ <dt><code>-p <var>POST-file</var></code></dt>
+ <dd>File containing data to POST.</dd>
+
+ <dt><code>-P <var>proxy-auth-username</var>:<var>password</var></code></dt>
+ <dd>Supply BASIC Authentication credentials to a proxy en-route. The
+ username and password are separated by a single <code>:</code> and sent on
+ the wire base64 encoded. The string is sent regardless of whether the
+ proxy needs it (<em>i.e.</em>, has sent an 407 proxy authentication
+ needed).</dd>
+
+ <dt><code>-q</code></dt>
+ <dd>When processing more than 150 requests, <code>ab</code> outputs a
+ progress count on <code>stderr</code> every 10% or 100 requests or so. The
+ <code>-q</code> flag will suppress these messages.</dd>
+
+ <dt><code>-s</code></dt>
+ <dd>When compiled in (<code>ab -h</code> will show you) use the SSL
+ protected <code>https</code> rather than the <code>http</code> protocol.
+ This feature is experimental and <em>very</em> rudimentary. You probably
+ do not want to use it.</dd>
+
+ <dt><code>-S</code></dt>
+ <dd>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).</dd>
+
+ <dt><code>-t <var>timelimit</var></code></dt>
+ <dd>Maximum number of seconds to spend for benchmarking. This implies a
+ <code>-n 50000</code> internally. Use this to benchmark the server within a
+ fixed total amount of time. Per default there is no timelimit.</dd>
+
+ <dt><code>-T <var>content-type</var></code></dt>
+ <dd>Content-type header to use for POST data.</dd>
+
+ <dt><code>-v <var>verbosity</var></code></dt>
+ <dd>Set verbosity level - <code>4</code> and above prints information on
+ headers, <code>3</code> and above prints response codes (404, 200, etc.),
+ <code>2</code> and above prints warnings and info.</dd>
+
+ <dt><code>-V</code></dt>
+ <dd>Display version number and exit.</dd>
+
+ <dt><code>-w</code></dt>
+ <dd>Print out results in HTML tables. Default table is two columns wide,
+ with a white background.</dd>
+
+ <dt><code>-x <var>&lt;table&gt;-attributes</var></code></dt>
+ <dd>String to use as attributes for <code>&lt;table&gt;</code>. Attributes
+ are inserted <code>&lt;table <var>here</var> &gt;</code>.</dd>
+
+ <dt><code>-X <var>proxy</var>[:<var>port</var>]</code></dt>
+ <dd>Use a proxy server for the requests.</dd>
+
+ <dt><code>-y <var>&lt;tr&gt;-attributes</var></code></dt>
+ <dd>String to use as attributes for <code>&lt;tr&gt;</code>.</dd>
+
+ <dt><code>-z <var>&lt;td&gt;-attributes</var></code></dt>
+ <dd>String to use as attributes for <code>&lt;td&gt;</code>.</dd>
+ </dl>
+</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="bugs" id="bugs">Bugs</a></h2>
+ <p>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.</p>
+
+ <p>It does not implement HTTP/1.x fully; only accepts some 'expected' forms
+ of responses. The rather heavy use of <code>strstr(3)</code> shows up top
+ in profile, which might indicate a performance problem; <em>i.e.</em>, you
+ would measure the <code>ab</code> performance rather than the server's.</p>
+</div></div>
+<div class="bottomlang">
+<p><span>Available Languages: </span><a href="../en/programs/ab.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../ko/programs/ab.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="../tr/programs/ab.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div><div id="footer">
+<p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
+<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div>
+</body></html> \ No newline at end of file