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	<id>http://wiki.opensfs.org/index.php?action=history&amp;feed=atom&amp;title=MD_BMG%2FUsecases</id>
	<title>MD BMG/Usecases - Revision history</title>
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	<updated>2026-08-12T21:55:40Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://wiki.opensfs.org/index.php?title=MD_BMG/Usecases&amp;diff=627&amp;oldid=prev</id>
		<title>Sfaibish at 17:48, 6 September 2013</title>
		<link rel="alternate" type="text/html" href="http://wiki.opensfs.org/index.php?title=MD_BMG/Usecases&amp;diff=627&amp;oldid=prev"/>
		<updated>2013-09-06T17:48:07Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:48, 6 September 2013&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l3&quot;&gt;Line 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Postmark&amp;#039;&amp;#039;&amp;#039;: old NetApp benchmark – I built an MPI version; it is used to measure MD operations and file size scalability and files per directory scalability.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Postmark&amp;#039;&amp;#039;&amp;#039;: old NetApp benchmark – I built an MPI version; it is used to measure MD operations and file size scalability and files per directory scalability.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Netmist&amp;#039;&amp;#039;&amp;#039;: used to model any workload from statistics including all MD operations and file operations. Can model Workload objects for I/O performance mixes and combination of I/O and MD. Suitable for initial evaluation of storage as well as for performance troubleshooting.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Netmist&amp;#039;&amp;#039;&amp;#039;: used to model any workload from statistics including all MD operations and file operations. Can model Workload objects for I/O performance mixes and combination of I/O and MD. Suitable for initial evaluation of storage as well as for performance troubleshooting.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Return to [http://wiki.opensfs.org/MD_BMG Metadata Performance Evaluation] page.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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		<author><name>Sfaibish</name></author>
	</entry>
	<entry>
		<id>http://wiki.opensfs.org/index.php?title=MD_BMG/Usecases&amp;diff=622&amp;oldid=prev</id>
		<title>Sfaibish: Created page with &quot;* &#039;&#039;&#039;mdtest&#039;&#039;&#039;: test file MD operations on MDS: open, create, lookups, readdir; used in academia and as a comparison tool of FS MD. * &#039;&#039;&#039;fstest&#039;&#039;&#039;: small I/O’s and small fil...&quot;</title>
		<link rel="alternate" type="text/html" href="http://wiki.opensfs.org/index.php?title=MD_BMG/Usecases&amp;diff=622&amp;oldid=prev"/>
		<updated>2013-09-06T17:40:09Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;* &amp;#039;&amp;#039;&amp;#039;mdtest&amp;#039;&amp;#039;&amp;#039;: test file MD operations on MDS: open, create, lookups, readdir; used in academia and as a comparison tool of FS MD. * &amp;#039;&amp;#039;&amp;#039;fstest&amp;#039;&amp;#039;&amp;#039;: small I/O’s and small fil...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;mdtest&amp;#039;&amp;#039;&amp;#039;: test file MD operations on MDS: open, create, lookups, readdir; used in academia and as a comparison tool of FS MD.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;fstest&amp;#039;&amp;#039;&amp;#039;: small I/O’s and small files as well as lookups, targeting both MDS and OSS operations and MD HA for multiple MDS’s.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Postmark&amp;#039;&amp;#039;&amp;#039;: old NetApp benchmark – I built an MPI version; it is used to measure MD operations and file size scalability and files per directory scalability.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Netmist&amp;#039;&amp;#039;&amp;#039;: used to model any workload from statistics including all MD operations and file operations. Can model Workload objects for I/O performance mixes and combination of I/O and MD. Suitable for initial evaluation of storage as well as for performance troubleshooting.&lt;/div&gt;</summary>
		<author><name>Sfaibish</name></author>
	</entry>
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