What happens if you run _2_ DD session??<br><br><br>DD/Copy/etc are not magic IO applications, they have single thread performance limits.<br><br>No reason you cant <br><br><div class="gmail_quote">On Sat, May 19, 2012 at 1:48 PM, Dan Burkland <span dir="ltr">&lt;<a href="mailto:dburklan@nmdp.org" target="_blank">dburklan@nmdp.org</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
<br>
My company just bought some Intel x520 10GbE cards which I recently<br>
installed into our Oracle EBS database servers (IBM 3850 X5s running RHEL<br>
5.8). As the &quot;linux guy&quot; I have been tasked with getting these servers to<br>
communicate with our NetApp 6080s via NFS over the new 10GbE links. I have<br>
got everything working however ever after tuning the RHEL kernel I am only<br>
getting 160MB/s writes using the &quot;dd if=/dev/zero of=/mnt/testfile bs=1024<br>
count=5242880&quot; command. For you folks that run 10GbE to your toasters,<br>
what write speeds are you seeing from your 10GbE connected servers? Did<br>
you have to do any tuning in order to get the best results possible? If so<br>
what did you change?<br>
<br>
Thanks!<br>
<br>
Dan<br>
<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br>---<br>Gustatus Similis Pullus<br>