rubbos/app/apache2/manual/mod/leader.html.en

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   8 <title>leader - Apache HTTP Server</title>
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  15 <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>
  16 <p class="apache">Apache HTTP Server Version 2.0</p>
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  20 <a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.0</a> &gt; <a href="./">Modules</a></div>
  21 <div id="page-content">
  22 <div id="preamble"><h1>Apache MPM leader</h1>
  23 <div class="toplang">
  24 <p><span>Available Languages: </span><a href="../de/mod/leader.html" hreflang="de" rel="alternate" title="Deutsch">&nbsp;de&nbsp;</a> |
  25 <a href="../en/mod/leader.html" title="English">&nbsp;en&nbsp;</a> |
  26 <a href="../es/mod/leader.html" hreflang="es" rel="alternate" title="Español">&nbsp;es&nbsp;</a> |
  27 <a href="../ko/mod/leader.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
  28 </div>
  29 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>An experimental variant of the standard <code class="module"><a href="../mod/worker.html">worker</a></code>
  30 MPM</td></tr>
  31 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>MPM</td></tr>
  32 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>mpm_leader_module</td></tr>
  33 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>leader.c</td></tr></table>
  34 <h3>Summary</h3>
  35
  36     <div class="warning"><h3>Warning</h3>
  37       <p>This MPM is experimental, so it may or may not work
  38       as expected.</p>
  39     </div>
  40
  41     <p>This is an experimental variant of the standard
  42     <code class="module"><a href="../mod/worker.html">worker</a></code> MPM. It uses a Leader/Followers design pattern
  43     to coordinate work among threads. For more info, see <a href="http://deuce.doc.wustl.edu/doc/pspdfs/lf.pdf">http://deuce.doc.wustl.edu/doc/pspdfs/lf.pdf</a>.</p>
  44
  45     <p>To use the <code class="module"><a href="../mod/leader.html">leader</a></code> MPM, add
  46       <code>--with-mpm=leader</code> to the <code class="program"><a href="../programs/configure.html">configure</a></code>
  47       script's arguments when building the <code class="program"><a href="../programs/httpd.html">httpd</a></code>.</p>
  48
  49     <p>This MPM depends on APR's atomic compare-and-swap operations for
  50     thread synchronization. If you are compiling for an x86 target
  51     and you don't need to support 386s, or you are compiling for a
  52     SPARC and you don't need to run on pre-UltraSPARC chips, add
  53     <code>--enable-nonportable-atomics=yes</code> to the
  54     <code class="program"><a href="../programs/configure.html">configure</a></code> script's arguments. This will cause
  55     APR to implement atomic operations
  56     using efficient opcodes not available in older CPUs.</p>
  57 </div>
  58 <div id="quickview"><h3 class="directives">Directives</h3>
  59 <ul id="toc">
  60 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#acceptmutex">AcceptMutex</a></li>
  61 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#coredumpdirectory">CoreDumpDirectory</a></li>
  62 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#enableexceptionhook">EnableExceptionHook</a></li>
  63 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#group">Group</a></li>
  64 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listen">Listen</a></li>
  65 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listenbacklog">ListenBacklog</a></li>
  66 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#lockfile">LockFile</a></li>
  67 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxclients">MaxClients</a></li>
  68 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxmemfree">MaxMemFree</a></li>
  69 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxrequestsperchild">MaxRequestsPerChild</a></li>
  70 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxsparethreads">MaxSpareThreads</a></li>
  71 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#minsparethreads">MinSpareThreads</a></li>
  72 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#pidfile">PidFile</a></li>
  73 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#receivebuffersize">ReceiveBufferSize</a></li>
  74 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#scoreboardfile">ScoreBoardFile</a></li>
  75 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#sendbuffersize">SendBufferSize</a></li>
  76 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#serverlimit">ServerLimit</a></li>
  77 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#startservers">StartServers</a></li>
  78 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadlimit">ThreadLimit</a></li>
  79 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadsperchild">ThreadsPerChild</a></li>
  80 <li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#user">User</a></li>
  81 </ul>
  82 </div>
  83
  84 </div>
  85 <div class="bottomlang">
  86 <p><span>Available Languages: </span><a href="../de/mod/leader.html" hreflang="de" rel="alternate" title="Deutsch">&nbsp;de&nbsp;</a> |
  87 <a href="../en/mod/leader.html" title="English">&nbsp;en&nbsp;</a> |
  88 <a href="../es/mod/leader.html" hreflang="es" rel="alternate" title="Español">&nbsp;es&nbsp;</a> |
  89 <a href="../ko/mod/leader.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
  90 </div><div id="footer">
  91 <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>
  92 <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>
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