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       #Post#: 26--------------------------------------------------
       Finding  IO subsystem Performance with SQL Script
       By: srinivasma_exceldbp Date: March 19, 2014, 2:25 am
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       For Performance Tuning , it is required to know how well I/O
       system is performing
       This is a handy script providing latency of I/O sub system
       This script provides latencies for read,write,total latency
       This is ball point mark for latency
       •Excellent  :
       •Very good  :
       •Good       :
       •Poor       :
       •Bad        :
       •very bad   :   100 – 500ms
       •Worst      :   > 500ms
       */
       
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