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-<p class="apache">Apache HTTP Server Version 2.3</p>
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+<p class="apache">Apache HTTP Server Version 2.4</p>
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<div id="preamble"><h1>Apache MPM worker</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../de/mod/worker.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> |
<a href="../en/mod/worker.html" title="English"> en </a> |
+<a href="../fr/mod/worker.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
<a href="../ja/mod/worker.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
<a href="../tr/mod/worker.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
</div>
</ul><h3>See also</h3>
<ul class="seealso">
<li><a href="../bind.html">Setting which addresses and ports Apache HTTP Server uses</a></li>
-</ul></div>
+</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="section">
<h2><a name="how-it-works" id="how-it-works">How it Works</a></h2>
idle server threads, which stand ready to serve incoming
requests. In this way, clients do not need to wait for a new
threads or processes to be created before their requests can be
- served. The number of processes that will initially launched is
+ served. The number of processes that will initially launch is
set by the <code class="directive"><a href="../mod/mpm_common.html#startservers">StartServers</a></code>
directive. During operation, the server assesses the total number
of idle threads in all processes, and forks or kills processes to
<code class="directive"><a href="../mod/mpm_common.html#maxrequestworkers">MaxRequestWorkers</a></code> directive.
The maximum number of active child processes is determined by
the <code class="directive"><a href="../mod/mpm_common.html#maxrequestworkers">MaxRequestWorkers</a></code>
- directive divided by the <code class="directive"><a href="../mod/mpm_common.html# threadsperchild">
+ directive divided by the <code class="directive"><a href="../mod/mpm_common.html#threadsperchild">
ThreadsPerChild</a></code> directive.</p>
<p>Two directives set hard limits on the number of active child
processes and the number of server threads in a child process,
and can only be changed by fully stopping the server and then
- starting it again. <code class="directive"><a href="../mod/mpm_common.html#serverlimit ">ServerLimit
+ starting it again. <code class="directive"><a href="../mod/mpm_common.html#serverlimit">ServerLimit
</a></code> is a hard limit on the number of active child
processes, and must be greater than or equal to the
<code class="directive"><a href="../mod/mpm_common.html#maxrequestworkers">MaxRequestWorkers</a></code>
- directive divided by the <code class="directive"><a href="../mod/mpm_common.html# threadsperchild">
+ directive divided by the <code class="directive"><a href="../mod/mpm_common.html#threadsperchild">
ThreadsPerChild</a></code> directive.
<code class="directive"><a href="../mod/mpm_common.html#threadlimit">ThreadLimit</a></code> is a hard
limit of the number of server threads, and must be greater than
the following:</p>
<ul>
- <li>set the value of <code class="directive"><a href="../mod/mpm_common.html# maxconnectionsperchild">
+ <li>set the value of <code class="directive"><a href="../mod/mpm_common.html#maxconnectionsperchild">
MaxConnectionsPerChild</a></code> to zero</li>
- <li>set the value of <code class="directive"><a href="../mod/mpm_common.html# maxsparethreads">
+ <li>set the value of <code class="directive"><a href="../mod/mpm_common.html#maxsparethreads">
MaxSpareThreads</a></code> to the same value as
<code class="directive"><a href="../mod/mpm_common.html#maxrequestworkers">MaxRequestWorkers</a></code></li>
</ul>
<p>A typical configuration of the process-thread controls in
the <code class="module"><a href="../mod/worker.html">worker</a></code> MPM could look as follows:</p>
- <div class="example"><p><code>
- ServerLimit 16<br />
- StartServers 2<br />
- MaxRequestWorkers 150<br />
- MinSpareThreads 25<br />
- MaxSpareThreads 75<br />
- ThreadsPerChild 25
- </code></p></div>
+ <pre class="prettyprint lang-config">
+ServerLimit 16
+StartServers 2
+MaxRequestWorkers 150
+MinSpareThreads 25
+MaxSpareThreads 75
+ThreadsPerChild 25
+ </pre>
+
<p>While the parent process is usually started as <code>root</code>
under Unix in order to bind to port 80, the child processes and threads
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<p><span>Available Languages: </span><a href="../de/mod/worker.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> |
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<a href="../tr/mod/worker.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 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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