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-<title>Performance Scaling
- - Apache HTTP Server</title>
+<title>Performance Scaling - 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 rel="stylesheet" type="text/css" href="../style/css/prettify.css" />
<img alt="" src="../images/feather.gif" /></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 2.5</a></div><div id="page-content"><div id="preamble"><h1>Performance Scaling
- </h1>
+<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="./">Miscellaneous Documentation</a></div><div id="page-content"><div id="preamble"><h1>Performance Scaling</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../en/misc/perf-scaling.html" title="English"> en </a></p>
</div>
MPM runs a smaller number of child processes, and spawns
multiple request handling threads within each child process. In
2.4 MPMs are no longer hard-wired. They too can be exchanged
- via <code class="directive"><a href="../mod/core.html#loadmodule">LoadModule</a></code>.
+ via <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>.
The default MPM in 2.4 is the event MPM.
</p>
<p>The maximum number of workers, be they pre-forked child
</p>
<p>Finally, if the httpd server in question is not executing any third-party
code, via <code>mod_php</code>, <code>mod_perl</code> or similar,
- we recommend the use of <code class="module"><a href="../mod/mpm_event.html">mpm_event</a></code>. This MPM is ideal
+ we recommend the use of <code class="module">mpm_event</code>. This MPM is ideal
for situations where httpd serves as a thin layer between clients and
backend servers doing the real job, such as a proxy or cache.
</p>
</a></h4>
<p>
- The <code>MaxClients
- </code>
+ The <code>MaxClients</code>
directive in your Apache httpd configuration file specifies
the maximum number of workers your server can create. It
has two related directives, <code>MinSpareServers
complicated. Threaded MPMs support the <code>
ThreadsPerChild
</code>
- directive1 . Apache requires that <code>MaxClients
- </code>
+ directive1 . Apache requires that <code>MaxClients</code>
is evenly divisible by <code>ThreadsPerChild
</code>
.If you set either directive to a number that doesn't
complaint to the error log and adjust the <code>
ThreadsPerChild
</code>
- value downwards until it is an even factor of <code>
- MaxClients
- </code>
- .
+ value downwards until it is an even factor of
+ <code>MaxClients</code>.
</p>
that all the memory on your system is used, but no more. If
your system gets so overloaded that it needs to heavily
swap core memory out to disk, performance will degrade
- quickly. The formula for determining <code class="directive"><a href="../mod/mpm_common.html#maxclients">MaxClients</a></code>
+ quickly. The formula for determining <code class="directive"><a href="../mod/mpm_common.html#maxrequestworkers">MaxClients</a></code>
is fairly simple:
</p>
<p>
- The Apache Software Foundation Wiki is served by MoinMoin.
- MoinMoin is written in Python and runs as a CGI. To date, any
- attempts to run it under mod_python has been unsuccessful.
- The CGI proved to place an untenably high load on the
- server machine, especially when the Wiki was being indexed
- by search engines like Google. To lighten the load on the
- server machine, the Apache Infrastructure team turned to
- mod_cache. It turned out <a href="/httpd/MoinMoin">MoinMoin
- </a>
- needed a small patch to ensure proper behavior behind the
- caching server: certain requests can never be cached and
- the corresponding Python modules were patched to send the
- proper HTTP response headers. After this modification, the
- cache in front of the Wiki was enabled with the following
- configuration snippet in <code>httpd.conf</code>:
+ The Apache Software Foundation Wiki is served by
+ MoinMoin. MoinMoin is written in Python and runs as
+ a CGI. To date, any attempts to run it under
+ mod_python has been unsuccessful. The CGI proved to
+ place an untenably high load on the server machine,
+ especially when the Wiki was being indexed by search
+ engines like Google. To lighten the load on the
+ server machine, the Apache Infrastructure team
+ turned to mod_cache. It turned out MoinMoin needed a
+ small patch to ensure proper behavior behind the
+ caching server: certain requests can never be cached
+ and the corresponding Python modules were patched to
+ send the proper HTTP response headers. After this
+ modification, the cache in front of the Wiki was
+ enabled with the following configuration snippet in
+ <code>httpd.conf</code>:
</p>
<pre class="prettyprint lang-config">
<p>This configuration will try to cache any and all content
within its virtual host. It will never cache content for
- more than six hours (the <code class="directive"><a href="../mod/mod_cace.html#cachemaxexpire">CacheMaxExpire</a></code>
+ more than six hours (the <code class="directive"><a href="../mod/mod_cache.html#cachemaxexpire">CacheMaxExpire</a></code>
directive). If no <code>Expires:</code>
header is present in the response, <code class="module"><a href="../mod/mod_cache.html">mod_cache</a></code> will compute
an expiration period from the <code>Last-Modified:</code>
<p>From 2.4.8 onwards, named groups and backreferences are captured and
written to the environment with the corresponding name prefixed with
"MATCH_" and in upper case. This allows elements of paths to be referenced
- from within <a href="expr.html">expressions</a> and modules like
+ from within <a href="../expr.html">expressions</a> and modules like
<code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>. In order to prevent confusion, numbered
(unnamed) backreferences are ignored. Use named groups instead.</p>
<p>From 2.4.8 onwards, named groups and backreferences are captured and
written to the environment with the corresponding name prefixed with
"MATCH_" and in upper case. This allows elements of files to be referenced
- from within <a href="expr.html">expressions</a> and modules like
+ from within <a href="../expr.html">expressions</a> and modules like
<code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>. In order to prevent confusion, numbered
(unnamed) backreferences are ignored. Use named groups instead.</p>
<pre class="prettyprint lang-config">
-<FileMatch ^(?<sitename>[^/]+)>
+<FilesMatch ^(?<sitename>[^/]+)>
require ldap-group cn=%{env:MATCH_SITENAME},ou=combined,o=Example
-</FileMatch>
+</FilesMatch>
</pre>
documentation is available in <a href="../expr.html">Expressions in
Apache HTTP Server</a>.</p>
- <p>Only directives that support the <a href="mod/directive-dict.html#Context">directory context</a> can be used within this configuration section.</p>
+ <p>Only directives that support the <a href="directive-dict.html#Context">directory context</a> can be used within this configuration section.</p>
<h3>See also</h3>
<p>From 2.4.8 onwards, named groups and backreferences are captured and
written to the environment with the corresponding name prefixed with
"MATCH_" and in upper case. This allows elements of URLs to be referenced
- from within <a href="expr.html">expressions</a> and modules like
+ from within <a href="../expr.html">expressions</a> and modules like
<code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>. In order to prevent confusion, numbered
(unnamed) backreferences are ignored. Use named groups instead.</p>
<a href="../ja/mod/core.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
<a href="../tr/mod/core.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
</div>
+<div class="outofdate">Cette traduction peut être périmée. Vérifiez la version
+ anglaise pour les changements récents.</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Fonctionnalités de base du serveur HTTP Apache toujours
disponibles</td></tr>
<tr><th><a href="module-dict.html#Status">Statut:</a></th><td>Core</td></tr></table>
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.de.xsl"?>
-<!-- English Revision: 344972:1555569 (outdated) -->
+<!-- English Revision: 344972:1562300 (outdated) -->
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?>
-<!-- English Revision: 1040494:1555569 (outdated) -->
+<!-- English Revision: 1040494:1562300 (outdated) -->
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.fr.xsl"?>
-<!-- English Revision : 1555569 -->
+<!-- English Revision: 1555569:1562300 (outdated) -->
<!-- French translation : Lucien GENTIS -->
<!-- Reviewed by : Vincent Deffontaines -->
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.ja.xsl"?>
-<!-- English Revision: 669847:1555569 (outdated) -->
+<!-- English Revision: 669847:1562300 (outdated) -->
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
<variant outdated="yes">de</variant>
<variant>en</variant>
<variant outdated="yes">es</variant>
- <variant>fr</variant>
+ <variant outdated="yes">fr</variant>
<variant outdated="yes">ja</variant>
<variant outdated="yes">tr</variant>
</variants>
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.tr.xsl"?>
-<!-- English Revision: 1302855:1555569 (outdated) -->
+<!-- English Revision: 1302855:1562300 (outdated) -->
<!-- =====================================================
Translated by: Nilgün Belma Bugüner <nilgun belgeler.org>
Reviewed by: Orhan Berent <berent belgeler.org>
<p>From 2.5.0 onwards, named groups and backreferences are captured and
written to the environment with the corresponding name prefixed with
"MATCH_" and in upper case. This allows elements of URLs to be referenced
- from within <a href="expr.html">expressions</a> and modules like
+ from within <a href="../expr.html">expressions</a> and modules like
<code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>. In order to prevent confusion, numbered
(unnamed) backreferences are ignored. Use named groups instead.</p>
<a href="../fr/mod/mod_proxy.html" title="Français"> fr </a> |
<a href="../ja/mod/mod_proxy.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p>
</div>
+<div class="outofdate">Cette traduction peut être périmée. Vérifiez la version
+ anglaise pour les changements récents.</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Serveur mandataire/passerelle multi-protocole</td></tr>
<tr><th><a href="module-dict.html#Status">Statut:</a></th><td>Extension</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Identificateur de Module:</a></th><td>proxy_module</td></tr>
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.fr.xsl"?>
-<!-- English Revision: 1560518 -->
+<!-- English Revision: 1560518:1562300 (outdated) -->
<!-- French translation : Lucien GENTIS -->
<!-- Reviewed by : Vincent Deffontaines -->
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.ja.xsl"?>
-<!-- English Revision: 344971:1560518 (outdated) -->
+<!-- English Revision: 344971:1562300 (outdated) -->
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
<variants>
<variant>en</variant>
- <variant>fr</variant>
+ <variant outdated="yes">fr</variant>
<variant outdated="yes">ja</variant>
</variants>
</metafile>
<p>When <code class="directive"><a href="#rewriterule">RewriteRule</a></code>
is used in <code>VirtualHost</code> or server context with
version 2.2.22 or later of httpd, <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>
- will only process the rewrite rules if the request URI is a <a href="./directive-dict.html#Syntax">URL-path</a>. This avoids
+ will only process the rewrite rules if the request URI is a <a href="directive-dict.html#Syntax">URL-path</a>. This avoids
some security issues where particular rules could allow
"surprising" pattern expansions (see <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3368">CVE-2011-3368</a>
and <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4317">CVE-2011-4317</a>).
<p><a id="patterns" name="patterns"><em>Pattern</em></a> is
a perl compatible <a id="regexp" name="regexp">regular
expression</a>. On the first RewriteRule, it is matched against
- the (%-decoded) <a href="./directive-dict.html#Syntax">URL-path</a> (or
- <a href="./directive-dict.html#Syntax">file-path</a>, depending
+ the (%-decoded) <a href="directive-dict.html#Syntax">URL-path</a> (or
+ <a href="directive-dict.html#Syntax">file-path</a>, depending
on the context) of the request. Subsequent patterns are matched against the
output of the last matching RewriteRule.</p>
<p><span>Langues Disponibles: </span><a href="../en/mod/mod_rewrite.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="../fr/mod/mod_rewrite.html" title="Français"> fr </a></p>
</div>
+<div class="outofdate">Cette traduction peut être périmée. Vérifiez la version
+ anglaise pour les changements récents.</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Ce module fournit un moteur de réécriture à base de
règles permettant de réécrire les URLs des requêtes
à la volée</td></tr>
<?xml version="1.0"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.fr.xsl"?>
-<!-- English Revision : 1555116 -->
+<!-- English Revision: 1555116:1562300 (outdated) -->
<!-- French translation : Lucien GENTIS -->
<!-- Reviewed by : Vincent Deffontaines -->
<variants>
<variant>en</variant>
- <variant>fr</variant>
+ <variant outdated="yes">fr</variant>
</variants>
</metafile>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
-<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#group">Group</a></li>
+<li><img alt="" src="../images/right.gif" /> <a href="mod_unixd.html#group">Group</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listen">Listen</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listenbacklog">ListenBacklog</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxconnectionsperchild">MaxConnectionsPerChild</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#receivebuffersize">ReceiveBufferSize</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#sendbuffersize">SendBufferSize</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#startservers">StartServers</a></li>
-<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#user">User</a></li>
+<li><img alt="" src="../images/right.gif" /> <a href="mod_unixd.html#user">User</a></li>
</ul>
<h3>See also</h3>
<ul class="seealso">
<a href="http://httpd.apache.org/bug_report.html">bug reporting
page.</a></p>
- <p>The bug reporting page and dev-httpd mailing list are <em>not</em>
- provided to answer questions about configuration or running Apache.
- Before you submit a bug report or request, first consult this document, the
- <a href="../faq/">Frequently Asked Questions</a> page and the other
- relevant documentation topics. If you still have a question or problem,
- post it to the <a href="news://developer-forums.novell.com/novell.devsup.webserver">
- novell.devsup.webserver</a> newsgroup, where many Apache users are more than
- willing to answer new and obscure questions about using Apache on NetWare.</p>
+ <p>The bug reporting page and dev-httpd mailing list are
+ <em>not</em> provided to answer questions about configuration or
+ running Apache. Before you submit a bug report or request, first
+ consult this document, the <a href="http://wiki.apache.org/httpd/FAQ">Frequently Asked
+ Questions</a> page and the other relevant documentation topics. If
+ you still have a question or problem, post it to the <a href="news://developer-forums.novell.com/novell.devsup.webserver">
+ novell.devsup.webserver</a> newsgroup, where many Apache users are
+ more than willing to answer new and obscure questions about using
+ Apache on NetWare.</p>
<p>Most of this document assumes that you are installing Apache
from a binary distribution. If you want to compile Apache
<p>Apache is configured by reading configuration files usually stored
in the <code>conf</code> directory. These are the same as files used
to configure the Unix version, but there are a few different directives for
- Apache on NetWare. See the <a href="../">Apache
+ Apache on NetWare. See the <a href="../mod/">Apache module
documentation</a> for all the available directives.</p>
<p>The main differences in Apache for NetWare are:</p>
<?xml version="1.0" encoding="EUC-KR" ?>
<!DOCTYPE manualpage SYSTEM "../style/manualpage.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.ko.xsl"?>
-<!-- English Revision: 105989:1174747 (outdated) -->
+<!-- English Revision: 105989:1562300 (outdated) -->
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
<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 2.5</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>log_server_status - Log periodic status summaries</h1>
<div class="toplang">
-<p><span>Available Languages: </span><a href="../en/programs/other.html" title="English"> en </a> |
-<a href="../ko/programs/other.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
-<a href="../tr/programs/other.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
+<p><span>Available Languages: </span><a href="../en/programs/log_server_status.html" title="English"> en </a></p>
</div>
<p>This perl script is designed to be run at a frequent interval by
</div></div>
<div class="bottomlang">
-<p><span>Available Languages: </span><a href="../en/programs/other.html" title="English"> en </a> |
-<a href="../ko/programs/other.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
-<a href="../tr/programs/other.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
+<p><span>Available Languages: </span><a href="../en/programs/log_server_status.html" title="English"> en </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 again 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="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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