Re: How to caliculate the IO Demand for IOPS and ThroughtPut
- From: K Gopalakrishnan <kaygopal@xxxxxxxxx>
- To: andrew.kerber@xxxxxxxxx
- Date: Mon, 20 Jun 2011 13:14:03 -0500
Andrew-et all,
You might see inflated IOPS when you use 'physical reads' or 'physical
writes' in the equation. The metric 'physical reads' records the number of
block requests and a block requests will always be higher than IO requests.
Use 'physical read/write IO requests' while calculating disk IOPS.
Also disk IOPS might be significantly higher than the database IOPS when you
add the RAID/parity overheads.
-Gopal
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