If you perceive that you may have suboptimal storage layout and you
can get exclusive access to the host, you may want to use the Oracle
Orion tool @ http://www.oracle.com/technology/software/tech/orion/index.html.
This will give you some good numbers of the IOPS and latency for
various IO sizes.
At one point in this thread it is mentioned that a 15k drive can do
180 IOPS. That is probably a number from a drive spec sheet, meaning
that is the highest possible under very precise circumstances. e.g.
very small size and totally sequential. In reality, half of that
number is probably reasonable. If you choose to use Orion, it will
give you an IOPS number.
--
Regards,
Greg Rahn
http://structureddata.org
Received on Fri Jun 08 2007 - 22:35:15 CDT
