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<p style="margin-bottom: 0cm; font-family: arial;"><big><big><span
style="font-weight: bold;">Benchmark results using bonnie++ on drbd
and nfs<br>
</span></big></big></p>
<p style="margin-bottom: 0cm; font-family: arial;"><big><big><small><small><small>The
issue of the tests is to know how using drbd and/or nfs can impact data
access velocity.<br>
<br>
</small></small></small></big></big></p>
<big><big><span style="font-weight: bold;"></span></big></big><small><small><span
style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);">1.Environment<br>
</span></span></small></small>
<p style="margin-bottom: 0cm;" align="left">2 servers :</p>
<p style="margin-bottom: 0cm;" align="left">PowerEdge SC1425</p>
<p style="margin-bottom: 0cm;" align="left">CPU: Intel XEON 2.8Ghz</p>
<p style="margin-bottom: 0cm;" align="left">RAM: DDRAM 1Go</p>
<p style="margin-bottom: 0cm;" align="left">DD: 160Go SATA</p>
<p style="margin-bottom: 0cm;" align="left">The 2 servers are connected
by an 1Gb/s ethernet network for drbd synchronisation and 100Mb/s for
nfs access.<br>
</p>
<p style="margin-bottom: 0cm;" align="left">The 2 servers use a drbd
raid partition /drbd (60Go).</p>
<p style="margin-bottom: 0cm;" align="left">notice: the drbd raid
partition was empty during the test (~580Mo).</p>
<p style="margin-bottom: 0cm;" align="left">Serveur “serveur1”
is the NFS server and is exporting 2 partitions:</p>
<ul>
<li>
<p style="margin-bottom: 0cm;" align="left">/ : racine locale</p>
</li>
<li>
<p style="margin-bottom: 0cm;" align="left">/drbd : partition en
raid réseau</p>
</li>
</ul>
<p style="margin-bottom: 0cm;" align="left">Serveur “serveur2” is the
NFS client and is mounting 2 partitions:<br>
</p>
<ul>
<li>
<p style="margin-bottom: 0cm;" align="left">/mnt/racine</p>
</li>
<li>
<p style="margin-bottom: 0cm;" align="left">/mnt/drbd</p>
</li>
</ul>
<p style="margin-bottom: 0cm;" align="left"><br>
<small><small><span style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);">2.Tests</span></span></small></small><br>
</p>
<br>
serveur1:
<ul>
<li>
<p style="margin-bottom: 0cm;" align="left">/ : bonnie++
test on local disk (/)<br>
</p>
</li>
</ul>
<p style="margin-bottom: 0cm;" align="left">
used command :
bonnie++ -d / -u root -s3g</p>
<ul>
<li>
<p style="margin-bottom: 0cm;" align="left">/drbd : bonnie++ test
on drbd raid partition<br>
</p>
</li>
</ul>
<p style="margin-bottom: 0cm;" align="left">
used command :
bonnie++ -d /drbd -u root -s3g</p>
<p style="margin-bottom: 0cm;" align="left">serveur2:</p>
<ul>
<li>/mnt/racine : bonnie++ test on nfs partition /mnt/racine <br>
</li>
</ul>
used command :
bonnie++ -d /mnt/racine -u root -s3g
<ul>
<li>
<p style="margin-bottom: 0cm;" align="left">/mnt/drbd : bonnie++
test on nfs partition /mnt/drbd</p>
</li>
</ul>
<p style="margin-bottom: 0cm;" align="left">
used command :
bonnie++ -d /mnt/drbd -u root -s3g:<br>
</p>
<p style="margin-bottom: 0cm;" align="left">ide:<br>
</p>
<div style="margin-left: 40px;">Ide test was made on a PC PIV
2.4Ghz, 512Mo SDRAM, DD ide 40Go.<br>
Just for information and comparison.<br>
used command :
bonnie++ -u root -s3g<br>
</div>
<p style="margin-bottom: 0cm;" align="left"><small><small><span
style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);">3.Résults</span></span></small></small><br>
</p>
<p style="margin-bottom: 0cm;" align="left"><br>
</p>
<table border="1" bordercolor="#000000" cellpadding="4" cellspacing="0"
width="100%">
<col width="18*"> <col width="19*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <thead> <tr
valign="top">
<th rowspan="2" colspan="2" width="15%">
<p align="center"><br>
</p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Sequential Output</font></p>
</th>
<th colspan="4" width="29%">
<p align="center"><font size="2">Sequential Input</font></p>
</th>
<th rowspan="2" colspan="2" width="14%">
<p align="center"><font size="2">Random Seeks</font></p>
</th>
</tr>
<tr valign="top">
<td colspan="2" width="14%">
<p align="center"><font size="2">Per-Character</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Block</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Rewrite</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Per-Character</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Block</font></p>
</td>
</tr>
</thead> <tbody>
<tr valign="top">
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Partition</font></p>
</td>
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">test
space<br>
</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">3Go</font></p>
</td>
<td sdval="36267" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">36267</font></p>
</td>
<td sdval="99" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">99</font></p>
</td>
<td sdval="59546" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">59546</font></p>
</td>
<td sdval="24" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">24</font></p>
</td>
<td sdval="25987" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">25987</font></p>
</td>
<td sdval="8" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">8</font></p>
</td>
<td sdval="30581" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">30581</font></p>
</td>
<td sdval="73" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">73</font></p>
</td>
<td sdval="61702" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">61702</font></p>
</td>
<td sdval="9" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">9</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">150.9</font></p>
</td>
<td sdval="0" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">0</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/drbd</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">3Go</font></p>
</td>
<td sdval="31627" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">31627</font></p>
</td>
<td sdval="99" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">99</font></p>
</td>
<td sdval="45398" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">45398</font></p>
</td>
<td sdval="22" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">22</font></p>
</td>
<td sdval="23847" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">23847</font></p>
</td>
<td sdval="9" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">9</font></p>
</td>
<td sdval="29501" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">29501</font></p>
</td>
<td sdval="72" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">72</font></p>
</td>
<td sdval="60896" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">60896</font></p>
</td>
<td sdval="9" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">9</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">159.3</font></p>
</td>
<td sdval="0" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">0</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/mnt/racine</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">3Go</font></p>
</td>
<td sdval="10156" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">10156</font></p>
</td>
<td sdval="26" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">26</font></p>
</td>
<td sdval="10028" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">10028</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="2823" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2823</font></p>
</td>
<td sdval="69" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">69</font></p>
</td>
<td sdval="11703" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">11703</font></p>
</td>
<td sdval="28" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">28</font></p>
</td>
<td sdval="11679" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">11679</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">145.6</font></p>
</td>
<td sdval="0" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">0</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/mnt/drbd</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">3Go</font></p>
</td>
<td sdval="9623" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">9623</font></p>
</td>
<td sdval="25" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">25</font></p>
</td>
<td sdval="9607" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">9607</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="3044" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">3044</font></p>
</td>
<td sdval="66" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">66</font></p>
</td>
<td sdval="11706" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">11706</font></p>
</td>
<td sdval="28" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">28</font></p>
</td>
<td sdval="11677" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">11677</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">145.3</font></p>
</td>
<td sdval="0" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">0</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">ide</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td sdval="30372" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">30372</font></p>
</td>
<td sdval="89" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">89</font></p>
</td>
<td sdval="35855" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">35855</font></p>
</td>
<td sdval="13" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">13</font></p>
</td>
<td sdval="19631" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">19631</font></p>
</td>
<td sdval="7" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">7</font></p>
</td>
<td sdval="28207" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">28207</font></p>
</td>
<td sdval="73" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">73</font></p>
</td>
<td sdval="40600" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">40600</font></p>
</td>
<td sdval="6" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">6</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">79.7</font></p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
</tr>
</tbody>
</table>
<p style="margin-bottom: 0cm;"><br>
</p>
<table border="1" bordercolor="#000000" cellpadding="4" cellspacing="0"
width="100%">
<col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <thead> <tr
valign="top">
<th rowspan="2" colspan="2" width="14%">
<p align="center"><br>
</p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Sequential </font><font size="2">creations</font></p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Random </font><font size="2">creations</font></p>
</th>
</tr>
<tr valign="top">
<td colspan="2" width="14%">
<p align="center"><font size="2">Creation</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Read</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Destruction</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Creation</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Read</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Destruction</font></p>
</td>
</tr>
</thead> <tbody>
<tr valign="top">
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Partition</font></p>
</td>
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Number
of files<br>
</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/</font></p>
</td>
<td sdval="16" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">16</font></p>
</td>
<td sdval="2688" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2688</font></p>
</td>
<td sdval="98" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">98</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td sdval="2712" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2712</font></p>
</td>
<td sdval="99" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">99</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td sdval="8258" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">8258</font></p>
</td>
<td sdval="96" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">96</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/drbd</font></p>
</td>
<td sdval="16" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">16</font></p>
</td>
<td sdval="2595" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2595</font></p>
</td>
<td sdval="98" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">98</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td sdval="2699" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2699</font></p>
</td>
<td sdval="98" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">98</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="top" width="7%">
<p align="center"><br>
</p>
</td>
<td sdval="8145" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">8145</font></p>
</td>
<td sdval="95" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">95</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/mnt/racine</font></p>
</td>
<td sdval="16" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">16</font></p>
</td>
<td sdval="141" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">141</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="453" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">453</font></p>
</td>
<td sdval="81" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">81</font></p>
</td>
<td sdval="405" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">405</font></p>
</td>
<td sdval="3" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">3</font></p>
</td>
<td sdval="139" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">139</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="1193" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1193</font></p>
</td>
<td sdval="3" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">3</font></p>
</td>
<td sdval="319" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">319</font></p>
</td>
<td sdval="2" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/mnt/drbd</font></p>
</td>
<td sdval="16" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">16</font></p>
</td>
<td sdval="107" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">107</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="455" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">455</font></p>
</td>
<td sdval="82" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">82</font></p>
</td>
<td sdval="399" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">399</font></p>
</td>
<td sdval="3" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">3</font></p>
</td>
<td sdval="108" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">108</font></p>
</td>
<td sdval="1" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1</font></p>
</td>
<td sdval="1077" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">1077</font></p>
</td>
<td sdval="3" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">3</font></p>
</td>
<td sdval="301" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">301</font></p>
</td>
<td sdval="2" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">2</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">ide</font></p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
<td valign="bottom" width="7%">
<p align="center"><br>
</p>
</td>
</tr>
</tbody>
</table>
<p style="margin-bottom: 0cm;" align="left"><small><small><span
style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);">4.Conclusion</span></span></small></small>
</p>
<p
style="margin-bottom: 0cm; color: rgb(153, 0, 0); text-decoration: underline;"
align="left">4.1 drbd</p>
<p style="margin-bottom: 0cm;" align="left">In test configuration, we
show that drbd network raid layer don't slow down data access very much.<br>
</p>
<p
style="margin-bottom: 0cm; color: rgb(153, 0, 0); text-decoration: underline;"
align="left">4.2 nfs</p>
<p style="margin-bottom: 0cm;" align="left">The use of nfs divide by 3
the data access velocity, this is certainly due to the nfs protocol.<br>
</p>
<br>
<small><small><span style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);">5.Appendix</span></span></small></small>
<p
style="margin-bottom: 0cm; color: rgb(153, 0, 0); text-decoration: underline;"
align="left">5.1 Résults of tests on drbd raid partition /drbd 95% full<br>
</p>
<p style="margin-bottom: 0cm;" align="left">The issue of this test is
to know if drbd slow down data access when the synchronised partition
is full.<br>
</p>
<p style="margin-bottom: 0cm;" align="left"><br>
</p>
<table border="1" bordercolor="#000000" cellpadding="4" cellspacing="0"
width="100%">
<col width="18*"> <col width="19*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <thead> <tr
valign="top">
<th rowspan="2" colspan="2" width="15%">
<p align="center"><br>
</p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Sequential Output</font></p>
</th>
<th colspan="4" width="29%">
<p align="center"><font size="2">Sequential Input</font></p>
</th>
<th rowspan="2" colspan="2" width="14%">
<p align="center"><font size="2">Random Seeks</font></p>
</th>
</tr>
<tr valign="top">
<td colspan="2" width="14%">
<p align="center"><font size="2">Per-Character</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Block</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Rewrite</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Per-Character</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Block</font></p>
</td>
</tr>
</thead> <tbody>
<tr valign="top">
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Partition</font></p>
</td>
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Test
space<br>
</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">Ko/sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/drbd</font></p>
</td>
<td valign="top" width="7%">
<p align="center"><font size="2">3Go</font></p>
</td>
<td sdval="36267" sdnum="1036;" valign="bottom" width="7%">28808</td>
<td sdval="99" sdnum="1036;" valign="bottom" width="7%">97<br>
</td>
<td sdval="59546" sdnum="1036;" valign="bottom" width="7%">44207</td>
<td sdval="24" sdnum="1036;" valign="bottom" width="7%">23</td>
<td sdval="25987" sdnum="1036;" valign="bottom" width="7%">23673</td>
<td sdval="8" sdnum="1036;" valign="bottom" width="7%">10<br>
</td>
<td sdval="30581" sdnum="1036;" valign="bottom" width="7%">29975</td>
<td sdval="73" sdnum="1036;" valign="bottom" width="7%">75<br>
</td>
<td sdval="61702" sdnum="1036;" valign="bottom" width="7%">58854</td>
<td sdval="9" sdnum="1036;" valign="bottom" width="7%">9<br>
</td>
<td valign="top" width="7%">159.1</td>
<td sdval="0" sdnum="1036;" valign="bottom" width="7%">0<br>
</td>
</tr>
</tbody>
</table>
<p style="margin-bottom: 0cm;"><br>
</p>
<table border="1" bordercolor="#000000" cellpadding="4" cellspacing="0"
width="100%">
<col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <col width="18*"> <col
width="18*"> <col width="18*"> <col width="18*"> <thead> <tr
valign="top">
<th rowspan="2" colspan="2" width="14%">
<p align="center"><br>
</p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Sequential </font><font size="2">creations</font></p>
</th>
<th colspan="6" width="43%">
<p align="center"><font size="2">Random </font><font size="2">creations</font></p>
</th>
</tr>
<tr valign="top">
<td colspan="2" width="14%">
<p align="center"><font size="2">Creation</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Read</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Destruction</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Creation</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Read</font></p>
</td>
<td colspan="2" width="14%">
<p align="center"><font size="2">Destruction</font></p>
</td>
</tr>
</thead> <tbody>
<tr valign="top">
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Partition</font></p>
</td>
<td width="7%">
<p align="center"><font style="font-size: 8pt;" size="1">Number
of files<br>
</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">/ sec</font></p>
</td>
<td width="7%">
<p align="center"><font size="2">% CPU</font></p>
</td>
</tr>
<tr>
<td valign="top" width="7%">
<p align="center"><font size="2">/drbd</font></p>
</td>
<td sdval="16" sdnum="1036;" valign="bottom" width="7%">
<p align="center"><font size="2">16</font></p>
</td>
<td sdval="2688" sdnum="1036;" valign="bottom" width="7%">2609</td>
<td sdval="98" sdnum="1036;" valign="bottom" width="7%">98<br>
</td>
<td valign="top" width="7%"><br>
</td>
<td valign="top" width="7%"><br>
</td>
<td valign="top" width="7%"><br>
</td>
<td valign="top" width="7%"><br>
</td>
<td sdval="2712" sdnum="1036;" valign="bottom" width="7%">2672</td>
<td sdval="99" sdnum="1036;" valign="bottom" width="7%">98<br>
</td>
<td valign="top" width="7%"><br>
</td>
<td valign="top" width="7%"><br>
</td>
<td sdval="8258" sdnum="1036;" valign="bottom" width="7%">8045</td>
<td sdval="96" sdnum="1036;" valign="bottom" width="7%">96<br>
</td>
</tr>
</tbody>
</table>
<small><small><span style="font-weight: bold;"><span
style="text-decoration: underline; color: rgb(153, 0, 0);"></span></span></small></small><br>
Drbd doesn't seem to suffer of the fact that the drbd raid partition
was full.<br>
<br>
<br>
<span style="font-family: arial;"></span>
<div style="text-align: center;"><font
face="Helvetica, Arial, sans-serif"><big><big>*****************************</big></big>
</font><br>
<font face="Helvetica, Arial, sans-serif"><u><big><big><big><font
size="2">
</font></big></big></big></u></font></div>
<h1 style="text-align: center;"><font
face="Helvetica, Arial, sans-serif" size="2">
<p> </p>
</font></h1>
</body>
</html>