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<a name="Garbage-Collection"></a>
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Previous: <a href="Profiling-Key-Operations.html#Profiling-Key-Operations" accesskey="p" rel="prev">Profiling Key Operations</a>, Up: <a href="Performance-Optimization.html#Performance-Optimization" accesskey="u" rel="up">Performance Optimization</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p>
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<a name="Garbage-Collection-1"></a>
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<h3 class="section">18.2 Garbage Collection</h3>
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<p>During the cache-build process, Org-roam generates a lot of in-memory
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data-structures (such as the Org file’s AST), which are discarded after use. These structures are garbage collected at regular intervals (see <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Garbage-Collection.html#Garbage-Collection">(elisp)info:elisp#Garbage Collection</a>).
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</p>
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<p>Org-roam provides the option <code>org-roam-db-gc-threshold</code> to temporarily change
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the threshold value for GC to be triggered during these memory-intensive
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operations. To reduce the number of garbage collection processes, one may set
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<code>org-roam-db-gc-threshold</code> to a high value (such as <code>most-positive-fixnum</code>):
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</p>
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<div class="lisp">
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<pre class="lisp">(setq org-roam-db-gc-threshold most-positive-fixnum)
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</pre></div>
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