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</td></tr></table><table id="gradientTable"><tr><td class="nsrBottom" background="../icons/gradient.gif" /></tr></table></div><div id="mainSection"><div id="mainBody"><div id="allHistory" class="saveHistory" onsave="saveAll()" onload="loadAll()" /><span style="color: DarkGray"> </span><div class="summary">
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The number of lock table partitions in the Berkeley DB environment.
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</div><p />
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<b>Namespace:</b>
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<a href="N_BerkeleyDB.htm">BerkeleyDB</a><br />
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<b>Assembly:</b>
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<span sdata="assembly">libdb_dotnet62</span> (in libdb_dotnet62.dll) Version: 6.2.23.0<h1 class="heading"><span onclick="ExpandCollapse(syntaxToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(syntaxToggle, event)" tabindex="0"><img id="syntaxToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Syntax</span></h1><div id="syntaxSection" class="section" name="collapseableSection" style=""><div id="syntaxCodeBlocks" class="code"><span codeLanguage="CSharp"><table><tr><th>C#</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">uint</a> <span class="identifier">Partitions</span> { <span class="keyword">get</span>; <span class="keyword">set</span>; }</pre></td></tr></table></span><span codeLanguage="VisualBasicDeclaration"><table><tr><th>Visual Basic (Declaration)</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">Property</span> <span class="identifier">Partitions</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">UInteger</a></pre></td></tr></table></span><span codeLanguage="ManagedCPlusPlus"><table><tr><th>Visual C++</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span>:
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<span class="keyword">property</span> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="identifier">Partitions</span> {
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<a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="keyword">get</span> ();
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<span class="keyword">void</span> <span class="keyword">set</span> (<a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="parameter">value</span>);
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}</pre></td></tr></table></span></div></div><h1 class="heading"><span onclick="ExpandCollapse(remarksToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(remarksToggle, event)" tabindex="0"><img id="remarksToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Remarks</span></h1><div id="remarksSection" class="section" name="collapseableSection" style="">
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<p>
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The default value is 10 times the number of CPUs on the system if
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there is more than one CPU. Increasing the number of partitions can
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provide for greater throughput on a system with multiple CPUs and
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more than one thread contending for the lock manager. On single
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processor systems more than one partition may increase the overhead
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of the lock manager. Systems often report threading contexts as
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CPUs. If your system does this, set the number of partitions to 1 to
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get optimal performance.
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</p>
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<p>
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If the database environment already exists when
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<a href="M_BerkeleyDB_DatabaseEnvironment_Open.htm">Open(String, DatabaseEnvironmentConfig)</a> is called, the value of
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Partitions is ignored.
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</p>
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</div><h1 class="heading"><span onclick="ExpandCollapse(seeAlsoToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(seeAlsoToggle, event)" tabindex="0"><img id="seeAlsoToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />See Also</span></h1><div id="seeAlsoSection" class="section" name="collapseableSection" style=""><div class="seeAlsoStyle"><a href="T_BerkeleyDB_LockingConfig.htm">LockingConfig Class</a></div><div class="seeAlsoStyle"><a href="N_BerkeleyDB.htm">BerkeleyDB Namespace</a></div></div></div><div id="footer"><div class="footerLine"><img width="100%" height="3px" src="../icons/footer.gif" title="Footer image" /></div><A NAME="feedback"></A><span id="fb" class="feedbackcss"> </span>
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