Filesystem vs. Raw IO

From: Rick Stephenson <RStephenson_at_Ovid.com>
Date: Thu, 27 May 2004 11:24:09 -0600
Message-ID: <555F2B7B278B5348A28F665E6B0E43A40841CCF7@exchange-slc.ut.ovid.com>

I just ran some tests and I was shocked at the results. I assume I am missing something very obvious.  

Exporting data 2 million row table:  

EMC disk on UFS filesystem: 50 sec

EMC disk raw space: 3 min 8 sec

NetApp disk UFS filesystem: 48 sec

NetApp disk raw space: 3 min 7 sec  

What should I be looking at? Why such a big difference?  

I am running Oracle EE 9.2.0.3 on Solaris 2.8.  

Thanks,  

Rick Stephenson

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Received on Thu May 27 2004 - 12:21:17 CDT