Whamcloud - gitweb
FIX: converted to chapter and removed cruft
authorRichard Henwood <rhenwood@whamcloud.com>
Mon, 16 May 2011 20:23:33 +0000 (15:23 -0500)
committerRichard Henwood <rhenwood@whamcloud.com>
Mon, 16 May 2011 20:23:33 +0000 (15:23 -0500)
BenchmarkingTests.xml
LustreTuning.xml

index 84e2aac..018d75a 100644 (file)
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<article version="5.0" xml:lang="en-US" xmlns="http://docbook.org/ns/docbook" xmlns:xl="http://www.w3.org/1999/xlink">
+<chapter version="5.0" xml:lang="en-US" xmlns="http://docbook.org/ns/docbook" xmlns:xl="http://www.w3.org/1999/xlink">
   <info>
     <title>Benchmarking Lustre Performance (Lustre I/O Kit)</title>
   </info>
@@ -712,4 +712,4 @@ r-survey
       </section>
     </section>
   </section>
-</article>
+</chapter>
index 40531d6..4c251c8 100644 (file)
@@ -1,69 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<article version="5.0" xml:lang="en-US" xmlns="http://docbook.org/ns/docbook" xmlns:xl="http://www.w3.org/1999/xlink">
+<chapter version="5.0" xml:lang="en-US" xmlns="http://docbook.org/ns/docbook" xmlns:xl="http://www.w3.org/1999/xlink">
   <info>
     <title>Lustre Tuning</title>
   </info>
-  <informaltable frame="none">
-    <tgroup cols="2">
-      <colspec colname="c1" colwidth="50*"/>
-      <colspec colname="c2" colwidth="50*"/>
-      
-      
-      <tbody>
-        <row>
-          <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
-          <entry align="right" valign="top"><para><link xl:href="index.html"><inlinemediaobject><imageobject role="html">
-                    <imagedata contentdepth="26" contentwidth="30" fileref="./shared/toc01.gif" scalefit="1"/>
-                  </imageobject>
-<imageobject role="fo">
-                    <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/toc01.gif" scalefit="1" width="100%"/>
-                  </imageobject>
-</inlinemediaobject></link><link xl:href="BenchmarkingTests.html"><inlinemediaobject><imageobject role="html">
-                    <imagedata contentdepth="26" contentwidth="30" fileref="./shared/prev01.gif" scalefit="1"/>
-                  </imageobject>
-<imageobject role="fo">
-                    <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/prev01.gif" scalefit="1" width="100%"/>
-                  </imageobject>
-</inlinemediaobject></link><link xl:href="V_LustreTroubleshooting.html"><inlinemediaobject><imageobject role="html">
-                    <imagedata contentdepth="26" contentwidth="30" fileref="./shared/next01.gif" scalefit="1"/>
-                  </imageobject>
-<imageobject role="fo">
-                    <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/next01.gif" scalefit="1" width="100%"/>
-                  </imageobject>
-</inlinemediaobject></link><link xl:href="ix.html"><inlinemediaobject><imageobject role="html">
-                    <imagedata contentdepth="26" contentwidth="30" fileref="./shared/index01.gif" scalefit="1"/>
-                  </imageobject>
-<imageobject role="fo">
-                    <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/index01.gif" scalefit="1" width="100%"/>
-                  </imageobject>
-</inlinemediaobject></link></para></entry>
-        </row>
-      </tbody>
-    </tgroup>
-  </informaltable>
-  <para><link xl:href=""/></para>
-  <informaltable frame="none">
-    <tgroup cols="1">
-      <colspec colname="c1" colwidth="100*"/>
-      
-      <tbody>
-        <row>
-          <entry align="right"><para><anchor xml:id="dbdoclet.50438272_pgfId-874" xreflabel=""/>C H A P T E R  25<anchor xml:id="dbdoclet.50438272_56727" xreflabel=""/></para></entry>
-        </row>
-      </tbody>
-    </tgroup>
-  </informaltable>
-  <informaltable frame="none">
-    <tgroup cols="1">
-      <colspec colname="c1" colwidth="100*"/>
-      
-      <tbody>
-        <row>
-          <entry align="right"><para><anchor xml:id="dbdoclet.50438272_pgfId-5529" xreflabel=""/><anchor xml:id="dbdoclet.50438272_66186" xreflabel=""/>Lustre Tuning</para></entry>
-        </row>
-      </tbody>
-    </tgroup>
-  </informaltable>
   <para><anchor xml:id="dbdoclet.50438272_pgfId-1291087" xreflabel=""/>This chapter contains information about tuning Lustre for better performance and includes the following sections:</para>
   <itemizedlist><listitem>
       <para><anchor xml:id="dbdoclet.50438272_pgfId-1291091" xreflabel=""/><link xl:href="LustreTuning.html#50438272_55226">Optimizing the Number of Service Threads</link></para>
       <para><anchor xml:id="dbdoclet.50438272_pgfId-1295895" xreflabel=""/>In the case of read operations, the reads from clients may come in a different order and need a lot of seeking to get read from the disk. This noticeably hampers the read throughput.</para>
       <para><anchor xml:id="dbdoclet.50438272_pgfId-1295896" xreflabel=""/>Currently, there is no readahead on the OSTs themselves, though the clients do readahead. If there are lots of clients doing reads it would not be possible to do any readahead in any case because of memory consumption (consider that even a single RPC (1 MB) readahead for 1000 clients would consume 1 GB of RAM).</para>
       <para><anchor xml:id="dbdoclet.50438272_pgfId-1295897" xreflabel=""/>For file systems that use socklnd (TCP, Ethernet) as interconnect, there is also additional CPU overhead because the client cannot receive data without copying it from the network buffers. In the write case, the client CAN send data without the additional data copy. This means that the client is more likely to become CPU-bound during reads than writes.</para>
-      <!--
-Begin SiteCatalyst code version: G.5.
--->
-      <!--
-End SiteCatalyst code version: G.5.
--->
-        <informaltable frame="none">
-        <tgroup cols="3">
-          <colspec colname="c1" colwidth="33*"/>
-          <colspec colname="c2" colwidth="33*"/>
-          <colspec colname="c3" colwidth="33*"/>
-          
-          
-          
-          <tbody>
-            <row>
-              <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
-              <entry align="right"><para>821-2076-10</para></entry>
-              <entry align="right" valign="top"><para><link xl:href="index.html"><inlinemediaobject><imageobject role="html">
-                        <imagedata contentdepth="26" contentwidth="30" fileref="./shared/toc01.gif" scalefit="1"/>
-                      </imageobject>
-<imageobject role="fo">
-                        <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/toc01.gif" scalefit="1" width="100%"/>
-                      </imageobject>
-</inlinemediaobject></link><link xl:href="BenchmarkingTests.html"><inlinemediaobject><imageobject role="html">
-                        <imagedata contentdepth="26" contentwidth="30" fileref="./shared/prev01.gif" scalefit="1"/>
-                      </imageobject>
-<imageobject role="fo">
-                        <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/prev01.gif" scalefit="1" width="100%"/>
-                      </imageobject>
-</inlinemediaobject></link><link xl:href="V_LustreTroubleshooting.html"><inlinemediaobject><imageobject role="html">
-                        <imagedata contentdepth="26" contentwidth="30" fileref="./shared/next01.gif" scalefit="1"/>
-                      </imageobject>
-<imageobject role="fo">
-                        <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/next01.gif" scalefit="1" width="100%"/>
-                      </imageobject>
-</inlinemediaobject></link><link xl:href="ix.html"><inlinemediaobject><imageobject role="html">
-                        <imagedata contentdepth="26" contentwidth="30" fileref="./shared/index01.gif" scalefit="1"/>
-                      </imageobject>
-<imageobject role="fo">
-                        <imagedata contentdepth="100%" contentwidth="" depth="" fileref="./shared/index01.gif" scalefit="1" width="100%"/>
-                      </imageobject>
-</inlinemediaobject></link></para></entry>
-            </row>
-          </tbody>
-        </tgroup>
-      </informaltable>
-      <para><link xl:href=""/></para>
-      <para><link xl:href="copyright.html">Copyright</link> © 2011, Oracle and/or its affiliates. All rights reserved.</para>
     </section>
   </section>
-</article>
+</chapter>