From 4fc3b450cfeb4f2410613cba4fa179a07f7bb261 Mon Sep 17 00:00:00 2001
From: gleblanc <>
Date: Tue, 24 Apr 2001 15:15:57 +0000
Subject: [PATCH] 2001-04-24  Gregory Leblanc 
 <gleblanc@grego1.cu-portland.edu>

	* added a section and question about benchmarking
---
 LDP/faq/docbook/Linux-RAID-FAQ.sgml | 60 ++++++++++++++++++++++++-----
 LDP/faq/docbook/Linux-RAID-FAQ.xml  | 60 ++++++++++++++++++++++++-----
 2 files changed, 100 insertions(+), 20 deletions(-)

diff --git a/LDP/faq/docbook/Linux-RAID-FAQ.sgml b/LDP/faq/docbook/Linux-RAID-FAQ.sgml
index c4da06e6..ae5c5922 100644
--- a/LDP/faq/docbook/Linux-RAID-FAQ.sgml
+++ b/LDP/faq/docbook/Linux-RAID-FAQ.sgml
@@ -17,6 +17,14 @@
 
   <revhistory>
 
+   <revision>
+    <revnumber>v0.0.10</revnumber>
+    <date>24 April 2001</date>
+    <authorinitials>gml</authorinitials>
+    <revremark>
+     Added a new section and question about benchmarking.</revremark>
+   </revision>
+
    <revision>
     <revnumber>v0.0.9</revnumber>
     <date>9 October 2000</date>
@@ -26,16 +34,6 @@
      things which I can't remember.</revremark>
    </revision>
 
-   <revision>
-    <revnumber>v0.0.8</revnumber>
-    <date>6 September 2000</date>
-    <authorinitials>gml</authorinitials>
-    <revremark>
-     The info/welcome message on vger.kernel.org has a pointer to this
-     FAQ.  New section on recovery, and fixed a few markup things.
-    </revremark>
-   </revision>
-
   </revhistory>
 
 
@@ -414,6 +412,48 @@ unused devices: &lt;none&gt;
 
   </qandadiv>
 
+  <qandadiv>
+   <title>Benchmarking</title>
+
+   <qandaentry>
+
+    <question>
+     <para>How should I benchmark my RAID devices?  Are there any
+     tools that work particularly well?</para>
+    </question>
+
+    <answer>
+     <para>There are really a few options for benchmarking your RAID
+     array, depending on what you're looking to test.  RAID offers the
+     greatest speed increases when there are multiple threads reading
+     from the same RAID volume.</para>
+
+     <para>One tool specificly designed to test and show off these
+     performance gains is <ulink
+     url="http://tiobench.sourceforge.net/"
+     type="http"><application>tiobench</application></ulink>.  It uses
+     multiple read and write threads on the disk, and has some pretty
+     good reporting.</para>
+
+     <para>Another good tool to use is <ulink
+     url="http://www.coker.com.au/bonnie++/"
+     type="http"><application>bonnie++</application></ulink>.  It
+     seems to be more targeted at benchmarking single drives that at
+     RAID, but still provides useful information.</para>
+
+     <para>One tool <emphasis>NOT</emphasis> to use is
+     <application>hdparm</application>.  It does not give useful
+     performance numbers for any drives that I've heard about, and has
+     been known to give some incredibly off-the-wall numbers as well.
+      If you want to do <emphasis>real</emphasis> benchmarking, use
+     one of the tools listed above.</para>
+
+    </answer>
+
+   </qandaentry>
+
+  </qandadiv>
+
  </qandaset>
 
 </article>
diff --git a/LDP/faq/docbook/Linux-RAID-FAQ.xml b/LDP/faq/docbook/Linux-RAID-FAQ.xml
index c4da06e6..ae5c5922 100644
--- a/LDP/faq/docbook/Linux-RAID-FAQ.xml
+++ b/LDP/faq/docbook/Linux-RAID-FAQ.xml
@@ -17,6 +17,14 @@
 
   <revhistory>
 
+   <revision>
+    <revnumber>v0.0.10</revnumber>
+    <date>24 April 2001</date>
+    <authorinitials>gml</authorinitials>
+    <revremark>
+     Added a new section and question about benchmarking.</revremark>
+   </revision>
+
    <revision>
     <revnumber>v0.0.9</revnumber>
     <date>9 October 2000</date>
@@ -26,16 +34,6 @@
      things which I can't remember.</revremark>
    </revision>
 
-   <revision>
-    <revnumber>v0.0.8</revnumber>
-    <date>6 September 2000</date>
-    <authorinitials>gml</authorinitials>
-    <revremark>
-     The info/welcome message on vger.kernel.org has a pointer to this
-     FAQ.  New section on recovery, and fixed a few markup things.
-    </revremark>
-   </revision>
-
   </revhistory>
 
 
@@ -414,6 +412,48 @@ unused devices: &lt;none&gt;
 
   </qandadiv>
 
+  <qandadiv>
+   <title>Benchmarking</title>
+
+   <qandaentry>
+
+    <question>
+     <para>How should I benchmark my RAID devices?  Are there any
+     tools that work particularly well?</para>
+    </question>
+
+    <answer>
+     <para>There are really a few options for benchmarking your RAID
+     array, depending on what you're looking to test.  RAID offers the
+     greatest speed increases when there are multiple threads reading
+     from the same RAID volume.</para>
+
+     <para>One tool specificly designed to test and show off these
+     performance gains is <ulink
+     url="http://tiobench.sourceforge.net/"
+     type="http"><application>tiobench</application></ulink>.  It uses
+     multiple read and write threads on the disk, and has some pretty
+     good reporting.</para>
+
+     <para>Another good tool to use is <ulink
+     url="http://www.coker.com.au/bonnie++/"
+     type="http"><application>bonnie++</application></ulink>.  It
+     seems to be more targeted at benchmarking single drives that at
+     RAID, but still provides useful information.</para>
+
+     <para>One tool <emphasis>NOT</emphasis> to use is
+     <application>hdparm</application>.  It does not give useful
+     performance numbers for any drives that I've heard about, and has
+     been known to give some incredibly off-the-wall numbers as well.
+      If you want to do <emphasis>real</emphasis> benchmarking, use
+     one of the tools listed above.</para>
+
+    </answer>
+
+   </qandaentry>
+
+  </qandadiv>
+
  </qandaset>
 
 </article>