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How to test I/O performance properly.

Publication Date:  2014-09-19 Views:  215 Downloads:  0
Issue Description
We must to know some information about his host:

-I/O type  [ random / Linear] ?
-Size of I/O ?
-Read Write percent  [example:  70 % read 30 %write or 70% write 30% read]
Alarm Information
we dont have allarm for this type of  "performance issue"
Handling Process

IO meter can test many kinds of IO by setting different parameters, if you want to get more truly result , you can set the parameter more close to real application.
Root Cause
We recommend to our customer  to  make a new  test with IoMeter  (because he doesnt want to use ISM)  using a larger IO size, to test a larger area, in order to provide greater concurrent host business pressures.

For example, the order of 32K – 64K of IO, you can use 128 concurrent tests. and adjust the file size to 20GB.

This software is free and you can download it from :