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HTML
81 lines
3.6 KiB
HTML
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<title>mutex_set_max</title>
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<link rel="start" href="index.html" title="Berkeley DB C++ API Reference" />
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<link rel="up" href="configuration_reference.html" title="Appendix B. DB_CONFIG Parameter Reference" />
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<div class="libver">
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<p>Library Version 11.2.5.2</p>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">mutex_set_max</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="mutex_set_increment_parameter.html">Prev</a> </td>
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<th width="60%" align="center">Appendix B. DB_CONFIG Parameter Reference</th>
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<td width="20%" align="right"> <a accesskey="n" href="mutex_set_tas_spins_parameter.html">Next</a></td>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="mutex_set_max_parameter"></a>mutex_set_max</h2>
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</div>
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</div>
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</div>
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<p>
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Configures the total number of mutexes to allocate. Berkeley DB
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allocates a default number of mutexes based on the initial
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configuration of the database environment. That default calculation
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may be too small if the application has an unusual need for
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mutexes. This parameter is used to specify an absolute number of
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mutexes to allocate.
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</p>
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<p>
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The syntax of this parameter in the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is a single
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line with the string <code class="literal">mutex_set_max</code>, one or more
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whitespace characters, and the total number of mutexes. Because
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the DB_CONFIG file is read when the database environment is
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opened, it will silently overrule configuration done before that
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time.
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</p>
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<p>
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For more information, see
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<a class="xref" href="mutexset_max.html" title="DbEnv::mutex_set_max()">DbEnv::mutex_set_max()</a>.
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<td width="40%" align="left"><a accesskey="p" href="mutex_set_increment_parameter.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="configuration_reference.html">Up</a>
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<td width="40%" align="right"> <a accesskey="n" href="mutex_set_tas_spins_parameter.html">Next</a></td>
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<tr>
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<td width="40%" align="left" valign="top">mutex_set_increment </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> mutex_set_tas_spins</td>
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</tr>
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