View source for Winter 2010 Presentations/Storage Performance



|"""headertest"""
<h2>Title</h2>

Storage Performance
By: David Chisholm (dmchisho@learn.senecac.on.ca)

<h2>Introduction</h2>

In order to have our Koji Build Farm run as efficiently as possible we needed to find out which form of data storage would be the fastest overall. The candidates were:

* PATA Hard Drive connected via USB
* NFS share from HongKong
* iSCSI network connection to HongKong

<h2>Approach</h2>

Benchmark using a linux untiliy called Bonnie++ written by Russell Coker.

The Benchmark was run 3 times on each medium, the results were then averaged together.

The command used is as follows:
 
 bonnie++ -d <location> -s 2048 -u root

<h2>Process</h2>

What happened while you worked on the problem? You had multiple iterations -- what happened at each milestone? Did you go down the wrong path and have to start over? What barriers did you encounter?

<h2>Discovery</h2>

What did you discover and learn during the process -- about the technology, the open source process, the community, yourself and your abilities, collaboration?

<h2>Results</h2>

<h3><span class="mw-headline"> Write </span></h3>
<table border="1" cellspacing="0" width="50%">

<tr>
<th></th>
<th>Transfer Speed</th>
<th>Percentage Increase</th>
<th>CPU Usage</th>
<th>Percentage Increase</th>
</tr>

<tr>
<td align="center">PATA</td>
<td align="center">28,790 KB/s</td>
<td align="center">0%</td>
<td align="center">24%</td>
<td align="center">0%</td>
</tr>
<tr>
<td align="center">NFS</td>
<td align="center">43,363 KB/s</td>

<td align="center">50%</td>
<td align="center">16%</td>
<td align="center">-50%</td>
</tr>
<tr>
<td align="center">iSCSI</td>
<td align="center">31,503 KB/s</td>
<td align="center">9%</td>
<td align="center">30%</td>
<td align="center">25%</td>

</tr>

</table>
<h3><span class="mw-headline"> Read </span></h3>
<table border="1" cellspacing="0" width="50%">

<tr>
<th></th>
<th>Transfer Speed</th>
<th>Percentage Increase</th>
<th>CPU Usage</th>

<th>Percentage Increase</th>
</tr>
<tr>
<td align="center">PATA</td>
<td align="center">25,991 KB/s</td>
<td align="center">0%</td>
<td align="center">10%</td>
<td align="center">0%</td>
</tr>
<tr>
<td align="center">NFS</td>

<td align="center">51,789 KB/s</td>
<td align="center">99%</td>
<td align="center">85%</td>
<td align="center">850%</td>
</tr>
<tr>
<td align="center">iSCSI</td>
<td align="center">59,147 KB/s</td>
<td align="center">127%</td>
<td align="center">84%</td>

<td align="center">840%</td>
</tr>
</table>