| <?xml version="1.0" encoding="UTF-8"?> |
| <!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> |
| <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> |
| <!-- |
| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
| This file is generated from xml source: DO NOT EDIT |
| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
| --> |
| <title>mod_logio - Apache HTTP Server Version 2.4</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 rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> |
| <script src="../style/scripts/prettify.min.js" type="text/javascript"> |
| </script> |
| |
| <link href="../images/favicon.ico" rel="shortcut icon" /></head> |
| <body> |
| <div id="page-header"> |
| <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.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> |
| <p class="apache">Apache HTTP Server Version 2.4</p> |
| <img alt="" src="../images/feather.png" /></div> |
| <div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> |
| <div id="path"> |
| <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 2.4</a> > <a href="./">Modules</a></div> |
| <div id="page-content"> |
| <div id="preamble"><h1>Apache Module mod_logio</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_logio.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_logio.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ja/mod/mod_logio.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | |
| <a href="../ko/mod/mod_logio.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | |
| <a href="../tr/mod/mod_logio.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> |
| </div> |
| <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> |
| <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>logio_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_logio.c</td></tr></table> |
| <h3>Summary</h3> |
| |
| |
| <p>This module provides the logging of input and output number of |
| bytes received/sent per request. The numbers reflect the actual bytes |
| as received on the network, which then takes into account the |
| headers and bodies of requests and responses. The counting is done |
| before SSL/TLS on input and after SSL/TLS on output, so the numbers |
| will correctly reflect any changes made by encryption.</p> |
| |
| <p>This module requires <code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code>.</p> |
| |
| <div class="note">When KeepAlive connections are used with SSL, the overhead of the SSL |
| handshake is reflected in the byte count of the first request on the |
| connection. When per-directory SSL renegotiation occurs, the bytes are associated |
| with the request that triggered the renegotiation.</div> |
| |
| </div> |
| <div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3> |
| <ul id="topics"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#formats">Custom Log Formats</a></li> |
| </ul><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#logiotrackttfb">LogIOTrackTTFB</a></li> |
| </ul> |
| <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> |
| <ul class="seealso"> |
| <li><code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code></li> |
| <li><a href="../logs.html">Apache Log Files</a></li> |
| <li><a href="#comments_section">Comments</a></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="formats" id="formats">Custom Log Formats</a></h2> |
| |
| |
| <p>This module adds three new logging directives. The characteristics of the |
| request itself are logged by placing "<code>%</code>" directives in |
| the format string, which are replaced in the log file by the values as |
| follows:</p> |
| |
| <table class="bordered"><tr class="header"><th>Format String</th> |
| <th>Description</th></tr> |
| <tr><td><code>%I</code></td> |
| <td>Bytes received, including request and headers, cannot be |
| zero.</td></tr> |
| <tr class="odd"><td><code>%O</code></td> |
| <td>Bytes sent, including headers, cannot be zero.</td></tr> |
| <tr><td><code>%S</code></td> |
| <td>Bytes transferred (received and sent), including request and headers, |
| cannot be zero. This is the combination of %I and %O.<br /> |
| Available in Apache 2.4.7 and later</td></tr> |
| <tr class="odd"><td><code>%^FB</code></td> |
| <td>Delay in microseconds between when the request arrived and the |
| first byte of the response headers are written. Only available if |
| <code class="directive">LogIOTrackTTFB</code> is set to ON.<br /> |
| Available in Apache 2.4.13 and later</td></tr> |
| </table> |
| |
| <p>Usually, the functionality is used like this:</p> |
| |
| <dl> |
| <dt>Combined I/O log format:</dt> |
| <dd><code>"%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" |
| \"%{User-agent}i\" %I %O"</code></dd> |
| </dl> |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="LogIOTrackTTFB" id="LogIOTrackTTFB">LogIOTrackTTFB</a> <a name="logiotrackttfb" id="logiotrackttfb">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enable tracking of time to first byte (TTFB)</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LogIOTrackTTFB ON|OFF</code></td></tr> |
| <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LogIOTrackTTFB OFF</code></td></tr> |
| <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> |
| <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</td></tr> |
| <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_logio</td></tr> |
| <tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.13 and later</td></tr> |
| </table> |
| <p>This directive configures whether this module tracks the delay |
| between the request being read and the first byte of the response |
| headers being written. The resulting value may be logged with the |
| <code>%^FB</code> format.</p> |
| |
| </div> |
| </div> |
| <div class="bottomlang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_logio.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_logio.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ja/mod/mod_logio.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | |
| <a href="../ko/mod/mod_logio.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | |
| <a href="../tr/mod/mod_logio.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> |
| </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 Freenode, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div> |
| <script type="text/javascript"><!--//--><![CDATA[//><!-- |
| var comments_shortname = 'httpd'; |
| var comments_identifier = 'http://httpd.apache.org/docs/2.4/mod/mod_logio.html'; |
| (function(w, d) { |
| if (w.location.hostname.toLowerCase() == "httpd.apache.org") { |
| d.write('<div id="comments_thread"><\/div>'); |
| var s = d.createElement('script'); |
| s.type = 'text/javascript'; |
| s.async = true; |
| s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; |
| (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); |
| } |
| else { |
| d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); |
| } |
| })(window, document); |
| //--><!]]></script></div><div id="footer"> |
| <p class="apache">Copyright 2021 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="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!-- |
| if (typeof(prettyPrint) !== 'undefined') { |
| prettyPrint(); |
| } |
| //--><!]]></script> |
| </body></html> |