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What is 95th %ile column in storage test result

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  • 1.  What is 95th %ile column in storage test result

    Posted 11-20-2015 04:56:00 PM

    How to interpret storage test results mention in following doc specially the section showing average, 95th %ile and scaling cols

    https://docs.delphix.com/pages/viewpage.action?pageId=44800570" href="https://docs.delphix.com/pages/viewpage.action?pageId=44800570">https://docs.delphix.com/pages/viewpage.action?pageId=44800570




  • 2.  RE: What is 95th %ile column in storage test result
    Best Answer

    Posted 11-23-2015 07:01:00 PM
    Imran,

    The 95th %ile column reports the latency (in ms) at which 95% of IO operations were faster, and 5% were slower. This is important in grading the storage because it will show how significant the latency outliers are. The closer the average and 95% numbers are to each other, the more consistent the performance. 

    Scaling is a measure of how performance is impacted by an increasing number of concurrent operations. This gives a sense of how the storage will perform as the number of VDBs increases.

    Please note that this section of the output is really a summary. When sizing a system and assessing storage, our Solutions Architects also analyze the histogram to get the complete picture.

    Please let us know if you have any additional questions.

    Thank you,

    Michael