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181 lines
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<?xml version="1.0" encoding="UTF-8"?>
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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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<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
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<!--
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This file is generated from xml source: DO NOT EDIT
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-->
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<title>mod_logio - Apache HTTP Server Version 2.5</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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<script src="../style/scripts/prettify.min.js" type="text/javascript">
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</script>
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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<body>
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<div id="page-header">
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/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 2.5</p>
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<img alt="" src="../images/feather.png" /></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 2.5</a> > <a href="./">Modules</a></div>
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<div id="page-content">
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<div id="preamble"><h1>Apache Module mod_logio</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_logio.html" title="English"> en </a> |
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<a href="../fr/mod/mod_logio.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<a href="../ja/mod/mod_logio.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_logio.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
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<a href="../tr/mod/mod_logio.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
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</div>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Logging of input and output bytes per request</td></tr>
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<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>logio_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_logio.c</td></tr></table>
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<h3>Summary</h3>
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<p>This module provides the logging of input and output number of
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bytes received/sent per request. The numbers reflect the actual bytes
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as received on the network, which then takes into account the
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headers and bodies of requests and responses. The counting is done
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before SSL/TLS on input and after SSL/TLS on output, so the numbers
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will correctly reflect any changes made by encryption.</p>
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<p>This module requires <code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code>.</p>
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<div class="note">When KeepAlive connections are used with SSL, the overhead of the SSL
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handshake is reflected in the byte count of the first request on the
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connection. When per-directory SSL renegotiation occurs, the bytes are associated
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with the request that triggered the renegotiation.</div>
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</div>
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<div id="quickview"><h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#formats">Custom Log Formats</a></li>
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</ul><h3 class="directives">Directives</h3>
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<ul id="toc">
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<li><img alt="" src="../images/down.gif" /> <a href="#logiotrackttfb">LogIOTrackTTFB</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#logiotrackttfu">LogIOTrackTTFU</a></li>
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</ul>
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<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_logio">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_logio">Report a bug</a></li></ul><h3>See also</h3>
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<ul class="seealso">
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<li><code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code></li>
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<li><a href="../logs.html">Apache Log Files</a></li>
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<li><a href="#comments_section">Comments</a></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="formats" id="formats">Custom Log Formats</a> <a title="Permanent link" href="#formats" class="permalink">¶</a></h2>
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<p>This module adds three new logging directives. The characteristics of the
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request itself are logged by placing "<code>%</code>" directives in
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the format string, which are replaced in the log file by the values as
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follows:</p>
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<table class="bordered"><tr class="header"><th>Format String</th>
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<th>Description</th></tr>
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<tr><td><code>%I</code></td>
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<td>Bytes received, including request and headers, cannot be
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zero.</td></tr>
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<tr class="odd"><td><code>%O</code></td>
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<td>Bytes sent, including headers, cannot be zero.</td></tr>
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<tr><td><code>%S</code></td>
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<td>Bytes transferred (received and sent), including request and headers,
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cannot be zero. This is the combination of %I and %O.<br />
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Available in Apache 2.4.7 and later</td></tr>
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<tr class="odd"><td><code>%^FU</code></td>
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<td>Delay in microseconds between when the request arrived and the
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last byte of the request body was read (finished upload).
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Only available if <code class="directive">LogIOTrackTTFU</code> is set to
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ON.<br />
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Available in Apache 2.4.34 and later</td></tr>
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<tr><td><code>%^FB</code></td>
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<td>Delay in microseconds between when the request arrived and the
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first byte of the response headers are written. Only available if
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<code class="directive">LogIOTrackTTFB</code> is set to ON.<br />
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Available in Apache 2.4.13 and later</td></tr>
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</table>
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<p>Usually, the functionality is used like this:</p>
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<dl>
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<dt>Combined I/O log format:</dt>
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<dd><code>"%h %l %u %t \"%r\" %>s %b \"%{Referer}i\"
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\"%{User-agent}i\" %I %O"</code></dd>
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</dl>
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</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="directive-section"><h2><a name="LogIOTrackTTFB" id="LogIOTrackTTFB">LogIOTrackTTFB</a> <a name="logiotrackttfb" id="logiotrackttfb">Directive</a> <a title="Permanent link" href="#logiotrackttfb" class="permalink">¶</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enable tracking of time to first byte (TTFB = time to first byte)
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</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LogIOTrackTTFB ON|OFF</code></td></tr>
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<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LogIOTrackTTFB OFF</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_logio</td></tr>
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<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.13 and later</td></tr>
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</table>
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<p>This directive configures whether this module tracks the delay
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between the request being read and the first byte of the response
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headers being written. The resulting value may be logged with the
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<code>%^FB</code> format.</p>
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</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="directive-section"><h2><a name="LogIOTrackTTFU" id="LogIOTrackTTFU">LogIOTrackTTFU</a> <a name="logiotrackttfu" id="logiotrackttfu">Directive</a> <a title="Permanent link" href="#logiotrackttfu" class="permalink">¶</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enable tracking of time to last request byte (TTFU = time to finish
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upload)</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LogIOTrackTTFU ON|OFF</code></td></tr>
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<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LogIOTrackTTFU OFF</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_logio</td></tr>
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<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.34 and later</td></tr>
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</table>
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<p>This directive configures whether this module tracks the delay
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between the request being read and the last byte of the request
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body being read (finished upload). The resulting value may be logged
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with the <code>%^FU</code> format.</p>
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</div>
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</div>
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<div class="bottomlang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_logio.html" title="English"> en </a> |
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<a href="../fr/mod/mod_logio.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<a href="../ja/mod/mod_logio.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_logio.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
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<a href="../tr/mod/mod_logio.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
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</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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