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Negative values on "Data Points Retrieved From Disk Per Interval"

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  • 1.  Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 09:58 AM

    Hi Team,

    I need know because the metric "Data Points Retrieved From Disk Per Interval" sometimes present negative values. Can you help me?

     

    Thanks.



  • 2.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 10:28 AM

    Dear Vinicius:

         From my look at the code and our knowledge base, this appears to be an underdocumented metric. Will ask internally for others to respond

    Thanks

    Hal German



  • 3.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 12:48 PM

    Definition of the metric: 

    Cluster Supportability Metrics - CA Application Performance Management - 10.0 - CA Technologies Documentation 

    Data Points Retrieved From Disk Per Interval

    The number of data points that are retrieved from SmartStor per interval.

     

    Francis



  • 4.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 12:59 PM

    Hi Vinicius,

     

    Can you post a screenshot of the full screen of the Investigator?  We would like to see the full metric path as well.

     

    What version is your MOM and Collectors?

     

    Check the date/time that the metric appears negative and then check the MOM and Collector logs at that point in time to see if there are any warnings or errors.

     

    Thanks,
    Matt



  • 5.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 01:12 PM

    Hi Matt,

    the version of environment is 10.2.

    In Log of MOM and Collectors not has any message.

    Please, look this example:

    Negative Metric

     

    Negative Metric 2



  • 6.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"
    Best Answer

    Posted 04-11-2017 01:45 PM

    This metric should never go negative.  Was there any other point back in time that it went below 0?  Please open up a Support issue, upload the screenshots as you did here and also the MOM and Collector logs.  This will require some deeper investigation.

     

    Thanks,
    Matt



  • 7.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 02:37 PM

    Dear Vinicius,

    Marking Matt as correct. Please open a case. Once resolved, if desired please share the solution here to help others. I am looking forward to hearing about your progress

     

    Thanks

    Hal German



  • 8.  Re: Negative values on "Data Points Retrieved From Disk Per Interval"

    Posted 04-11-2017 03:22 PM

    Ok Thanks.

    Vinícius Campelo