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<title>Munin :: localhost :: localhost :: memory</title>
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<td><div class="logo"> </div></td>
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<h2><a href="../index.html">Overview</a> :: <a href="index.html">
localhost</a> ::
<a href="localhost.html">localhost</a> :: memory</h2>
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<td colspan="2"><hr class="ruler" /></td>
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<td><img src="localhost-memory-day.png" alt="daily graph" width="495" height="408"/></td>
<td><img src="localhost-memory-week.png" alt="weekly graph" width="495" height="408"/></td>
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<td><img src="localhost-memory-month.png" alt="monthly graph" width="495" height="408"/></td>
<td><img src="localhost-memory-year.png" alt="yearly graph" width="495" height="408"/></td>
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<td class='wrap' colspan="6" align='left' valign='top'>This graph shows what the machine uses its memory for.</td>
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<th align='left' valign='top'>Field</th>
<th align='left' valign='top'><span title="For use in munin.conf">Internal name</span></th>
<th align='center' valign='top'><a href="../definitions.html#data_types">Type</a></th>
<th align='center' valign='top'>Warn</th>
<th align='center' valign='top'>Crit</th>
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<td align='left' valign='top'>apps</td>
<td align='left' valign='top'><span title="For use in munin.conf">apps</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Memory used by user-space applications.</td>
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<td align='left' valign='top'>page_tables</td>
<td align='left' valign='top'><span title="For use in munin.conf">page_tables</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Memory used to map between virtual and physical memory addresses.</td>
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<td colspan="6"><hr class="ruler" /></td>
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<td align='left' valign='top'>swap_cache</td>
<td align='left' valign='top'><span title="For use in munin.conf">swap_cache</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>A piece of memory that keeps track of pages that have been fetched from swap but not yet been modified.</td>
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<td align='left' valign='top'>vmalloc_used</td>
<td align='left' valign='top'><span title="For use in munin.conf">vmalloc_used</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Virtual memory used by the kernel (used when the memory does not have to be physically contigious).</td>
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<td align='left' valign='top'>slab_cache</td>
<td align='left' valign='top'><span title="For use in munin.conf">slab</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Memory used by the kernel (major users are caches like inode, dentry, etc).</td>
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<td colspan="6"><hr class="ruler" /></td>
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<td align='left' valign='top'>cache</td>
<td align='left' valign='top'><span title="For use in munin.conf">cached</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Parked file data (file content) cache.</td>
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<td align='left' valign='top'>buffers</td>
<td align='left' valign='top'><span title="For use in munin.conf">buffers</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Block device (e.g. harddisk) cache. Also where "dirty" blocks are stored until written.</td>
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<td align='left' valign='top'>unused</td>
<td align='left' valign='top'><span title="For use in munin.conf">free</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Wasted memory. Memory that is not used for anything at all.</td>
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<td colspan="6"><hr class="ruler" /></td>
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<td align='left' valign='top'>swap</td>
<td align='left' valign='top'><span title="For use in munin.conf">swap</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Swap space used.</td>
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<td align='left' valign='top'>committed</td>
<td align='left' valign='top'><span title="For use in munin.conf">committed</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>The amount of memory that would be used if all the memory that's been allocated were to be used.</td>
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<td align='left' valign='top'>mapped</td>
<td align='left' valign='top'><span title="For use in munin.conf">mapped</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>All mmap()ed pages.</td>
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<td colspan="6"><hr class="ruler" /></td>
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<td align='left' valign='top'>active</td>
<td align='left' valign='top'><span title="For use in munin.conf">active</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Memory recently used. Not reclaimed unless absolutely necessary.</td>
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<td align='left' valign='top'>inactive</td>
<td align='left' valign='top'><span title="For use in munin.conf">inactive</span></td>
<td align='center' valign='top'>gauge</td>
<td align='center' valign='top'>None</td>
<td align='center' valign='top'>None</td>
<td class='wrap' align='left' valign='top'>Memory not currently used.</td>
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<a href="../localhost/index.html">localhost</a> :
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<td><i class="small">This page was generated by <a href="http://munin.sourceforge.net/">Munin</a> version 1.2.5 at 2026-06-11 T 13:15:18</i></td>
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