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8 <title>threadpool - Apache HTTP Server</title>
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16 <p class="apache">Apache HTTP Server Version 2.0</p>
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20 <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 2.0</a> > <a href="./">Modules</a></div>
21 <div id="page-content">
22 <div id="preamble"><h1>Apache MPM threadpool</h1>
24 <p><span>Available Languages: </span><a href="../en/mod/threadpool.html" title="English"> en </a></p>
26 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Yet another experimental variant of the standard
27 <code class="module"><a href="../mod/worker.html">worker</a></code> MPM</td></tr>
28 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>MPM</td></tr>
29 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>mpm_threadpool_module</td></tr>
30 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>threadpool.c</td></tr></table>
33 <div class="warning"><h3>Warning</h3>
34 <p>This MPM is a developer playground and highly experimental, so it
35 may or may not work as expected.</p>
38 <p>This is an experimental variant of the standard worker MPM.
39 Rather than queuing connections like the worker MPM, the
40 <code class="module"><a href="../mod/threadpool.html">threadpool</a></code> MPM queues idle worker threads and
41 hands each accepted connection to the next available worker.</p>
43 <p>The <code class="module"><a href="../mod/threadpool.html">threadpool</a></code> MPM can't match the performance of
44 the <code class="module"><a href="../mod/worker.html">worker</a></code> MPM in benchmark testing. As of 2.0.39,
45 some of the key load-throtting concepts from the <code class="module"><a href="../mod/threadpool.html">threadpool</a></code> MPM have been incorporated into the <code class="module"><a href="../mod/worker.html">worker</a></code> MPM. The <code class="module"><a href="../mod/threadpool.html">threadpool</a></code> code is useful
46 primarily as a research platform. For general-purpose use and for any
47 production environments, use <code class="module"><a href="../mod/worker.html">worker</a></code> instead.</p>
49 <div id="quickview"><h3 class="directives">Directives</h3>
51 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#acceptmutex">AcceptMutex</a></li>
52 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#coredumpdirectory">CoreDumpDirectory</a></li>
53 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#enableexceptionhook">EnableExceptionHook</a></li>
54 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#group">Group</a></li>
55 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listen">Listen</a></li>
56 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listenbacklog">ListenBacklog</a></li>
57 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#lockfile">LockFile</a></li>
58 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxclients">MaxClients</a></li>
59 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxmemfree">MaxMemFree</a></li>
60 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxrequestsperchild">MaxRequestsPerChild</a></li>
61 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxsparethreads">MaxSpareThreads</a></li>
62 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#minsparethreads">MinSpareThreads</a></li>
63 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#pidfile">PidFile</a></li>
64 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#receivebuffersize">ReceiveBufferSize</a></li>
65 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#scoreboardfile">ScoreBoardFile</a></li>
66 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#sendbuffersize">SendBufferSize</a></li>
67 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#serverlimit">ServerLimit</a></li>
68 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#startservers">StartServers</a></li>
69 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadlimit">ThreadLimit</a></li>
70 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadsperchild">ThreadsPerChild</a></li>
71 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#user">User</a></li>
76 <div class="bottomlang">
77 <p><span>Available Languages: </span><a href="../en/mod/threadpool.html" title="English"> en </a></p>
78 </div><div id="footer">
79 <p class="apache">Copyright 2009 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>
80 <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>