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200 lines
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
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This file is generated from xml source: DO NOT EDIT
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<title>ab - Apache HTTP server benchmarking tool - Apache HTTP Server</title>
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<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
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<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" />
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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<body id="manual-page"><div id="page-header">
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<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>
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<p class="apache">Apache HTTP Server Version 2.3</p>
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<img alt="" src="../images/feather.gif" /></div>
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<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<div id="path">
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.3</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>ab - Apache HTTP server benchmarking tool</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/programs/ab.html" title="English"> en </a> |
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<a href="../ko/programs/ab.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div>
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<p><code>ab</code> is a tool for benchmarking your Apache Hypertext
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Transfer Protocol (HTTP) server. It is designed to give you an impression
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of how your current Apache installation performs. This especially shows
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you how many requests per second your Apache installation is capable of
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serving.</p>
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</div>
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<div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#synopsis">Synopsis</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#bugs">Bugs</a></li>
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</ul><h3>See also</h3><ul class="seealso"><li><code class="program"><a href="../programs/httpd.html">httpd</a></code></li></ul></div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="synopsis" id="synopsis">Synopsis</a></h2>
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<p><code><strong>ab</strong>
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[ -<strong>A</strong> <var>auth-username</var>:<var>password</var> ]
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[ -<strong>c</strong> <var>concurrency</var> ]
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[ -<strong>C</strong> <var>cookie-name</var>=<var>value</var> ]
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[ -<strong>d</strong> ]
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[ -<strong>e</strong> <var>csv-file</var> ]
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[ -<strong>g</strong> <var>gnuplot-file</var> ]
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[ -<strong>h</strong> ]
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[ -<strong>H</strong> <var>custom-header</var> ]
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[ -<strong>i</strong> ]
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[ -<strong>k</strong> ]
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[ -<strong>n</strong> <var>requests</var> ]
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[ -<strong>p</strong> <var>POST-file</var> ]
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[ -<strong>P</strong> <var>proxy-auth-username</var>:<var>password</var> ]
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[ -<strong>q</strong> ]
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[ -<strong>s</strong> ]
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[ -<strong>S</strong> ]
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[ -<strong>t</strong> <var>timelimit</var> ]
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[ -<strong>T</strong> <var>content-type</var> ]
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[ -<strong>v</strong> <var>verbosity</var>]
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[ -<strong>V</strong> ]
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[ -<strong>w</strong> ]
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[ -<strong>x</strong> <var><table>-attributes</var> ]
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[ -<strong>X</strong> <var>proxy</var>[:<var>port</var>] ]
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[ -<strong>y</strong> <var><tr>-attributes</var> ]
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[ -<strong>z</strong> <var><td>-attributes</var> ]
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[http://]<var>hostname</var>[:<var>port</var>]/<var>path</var></code></p>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="options" id="options">Options</a></h2>
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<dl>
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<dt><code>-A <var>auth-username</var>:<var>password</var></code></dt>
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<dd>Supply BASIC Authentication credentials to the server. The username and
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password are separated by a single <code>:</code> and sent on the wire
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base64 encoded. The string is sent regardless of whether the server needs
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it (<em>i.e.</em>, has sent an 401 authentication needed).</dd>
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<dt><code>-c <var>concurrency</var></code></dt>
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<dd>Number of multiple requests to perform at a time. Default is one
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request at a time.</dd>
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<dt><code>-C <var>cookie-name</var>=<var>value</var></code></dt>
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<dd>Add a <code>Cookie:</code> line to the request. The argument is
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typically in the form of a <code><var>name</var>=<var>value</var></code>
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pair. This field is repeatable.</dd>
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<dt><code>-d</code></dt>
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<dd>Do not display the "percentage served within XX [ms] table". (legacy
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support).</dd>
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<dt><code>-e <var>csv-file</var></code></dt>
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<dd>Write a Comma separated value (CSV) file which contains for each
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percentage (from 1% to 100%) the time (in milliseconds) it took to serve
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that percentage of the requests. This is usually more useful than the
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'gnuplot' file; as the results are already 'binned'.</dd>
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<dt><code>-g <var>gnuplot-file</var></code></dt>
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<dd>Write all measured values out as a 'gnuplot' or TSV (Tab separate
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values) file. This file can easily be imported into packages like Gnuplot,
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IDL, Mathematica, Igor or even Excel. The labels are on the first line of
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the file. </dd>
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<dt><code>-h</code></dt>
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<dd>Display usage information.</dd>
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<dt><code>-H <var>custom-header</var></code></dt>
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<dd>Append extra headers to the request. The argument is typically in
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the form of a valid header line, containing a colon-separated field-value
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pair (<em>i.e.</em>, <code>"Accept-Encoding: zip/zop;8bit"</code>).</dd>
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<dt><code>-i</code></dt>
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<dd>Do <code>HEAD</code> requests instead of <code>GET</code>.</dd>
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<dt><code>-k</code></dt>
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<dd>Enable the HTTP KeepAlive feature, <em>i.e.</em>, perform multiple
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requests within one HTTP session. Default is no KeepAlive.</dd>
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<dt><code>-n <var>requests</var></code></dt>
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<dd>Number of requests to perform for the benchmarking session. The default
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is to just perform a single request which usually leads to
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non-representative benchmarking results.</dd>
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<dt><code>-p <var>POST-file</var></code></dt>
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<dd>File containing data to POST. Remember to also set <code>-T</code>.</dd>
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<dt><code>-P <var>proxy-auth-username</var>:<var>password</var></code></dt>
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<dd>Supply BASIC Authentication credentials to a proxy en-route. The
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username and password are separated by a single <code>:</code> and sent on
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the wire base64 encoded. The string is sent regardless of whether the
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proxy needs it (<em>i.e.</em>, has sent an 407 proxy authentication
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needed).</dd>
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<dt><code>-q</code></dt>
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<dd>When processing more than 150 requests, <code>ab</code> outputs a
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progress count on <code>stderr</code> every 10% or 100 requests or so. The
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<code>-q</code> flag will suppress these messages.</dd>
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<dt><code>-s</code></dt>
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<dd>When compiled in (<code>ab -h</code> will show you) use the SSL
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protected <code>https</code> rather than the <code>http</code> protocol.
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This feature is experimental and <em>very</em> rudimentary. You probably
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do not want to use it.</dd>
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<dt><code>-S</code></dt>
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<dd>Do not display the median and standard deviation values, nor display
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the warning/error messages when the average and median are more than
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one or two times the standard deviation apart. And default to the
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min/avg/max values. (legacy support).</dd>
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<dt><code>-t <var>timelimit</var></code></dt>
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<dd>Maximum number of seconds to spend for benchmarking. This implies a
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<code>-n 50000</code> internally. Use this to benchmark the server within a
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fixed total amount of time. Per default there is no timelimit.</dd>
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<dt><code>-T <var>content-type</var></code></dt>
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<dd>Content-type header to use for POST data, eg.
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<code>application/x-www-form-urlencoded</code>.
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Default: <code>text/plain</code>.</dd>
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<dt><code>-v <var>verbosity</var></code></dt>
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<dd>Set verbosity level - <code>4</code> and above prints information on
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headers, <code>3</code> and above prints response codes (404, 200, etc.),
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<code>2</code> and above prints warnings and info.</dd>
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<dt><code>-V</code></dt>
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<dd>Display version number and exit.</dd>
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<dt><code>-w</code></dt>
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<dd>Print out results in HTML tables. Default table is two columns wide,
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with a white background.</dd>
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<dt><code>-x <var><table>-attributes</var></code></dt>
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<dd>String to use as attributes for <code><table></code>. Attributes
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are inserted <code><table <var>here</var> ></code>.</dd>
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<dt><code>-X <var>proxy</var>[:<var>port</var>]</code></dt>
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<dd>Use a proxy server for the requests.</dd>
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<dt><code>-y <var><tr>-attributes</var></code></dt>
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<dd>String to use as attributes for <code><tr></code>.</dd>
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<dt><code>-z <var><td>-attributes</var></code></dt>
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<dd>String to use as attributes for <code><td></code>.</dd>
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</dl>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="bugs" id="bugs">Bugs</a></h2>
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<p>There are various statically declared buffers of fixed length. Combined
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with the lazy parsing of the command line arguments, the response headers
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from the server and other external inputs, this might bite you.</p>
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<p>It does not implement HTTP/1.x fully; only accepts some 'expected' forms
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of responses. The rather heavy use of <code>strstr(3)</code> shows up top
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in profile, which might indicate a performance problem; <em>i.e.</em>, you
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would measure the <code>ab</code> performance rather than the server's.</p>
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</div></div>
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<div class="bottomlang">
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<p><span>Available Languages: </span><a href="../en/programs/ab.html" title="English"> en </a> |
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<a href="../ko/programs/ab.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div><div id="footer">
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<p class="apache">Copyright 2007 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>
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<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>
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</body></html> |