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<a name="The-Graph-Files"></a>
<h1 class="appendix">B. The Graph Files</h1>
<a name="index-reachability-graph_002c-file-format"></a>
<p>For maximum flexibility and performance, the reachability graph is laid
out in disk files in machine dependent format. Please refer to the
files ‘<tt>Graph/fileformats.html</tt>’ and ‘<tt>Graph/Graph.C</tt>’ in the
Maria source code for exact information.
</p>
<p>Note that when Maria has been compiled for using a memory mapped file
interface (see section <a href="maria_7.html#Configuring">Editing the ‘<tt>Makefile</tt>’ files</a>), the sizes of the graph files will be
rounded up to a power of two while Maria is running. This arrangement
reduces the number of costly system calls.
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