3 Replies Latest reply on Jun 6, 2018 8:35 PM by Wanfeng Wang

    BPPM Events closure criteria with signature thresholds

    Alvaro Paronuzzi
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      Hello everyone,

       

      does anyone know the criteria that is using BPPM to close an alarm when signature thresholds are used?

      It looks the threshold violation is not the only variable.

       

      This is an example:

      B08_20131010.jpg

      As you can see the event is closed long after the metric is within threshold (and it is not a matter of Duration, which is set to 1 minute).

      Can anyone please provide any help with this?

       

      Kind Regards,

       

      Alvaro

        • 1. Re: BPPM Events closure criteria with signature thresholds
          Jimish Thakkar

          Hi Alvaro,

           

          Let me know if this helps answer your query with respect to the delay in closing the event.

           

          Duration:

          The delay time (in minutes) from when the threshold is violated to when an event is generated. The same duration is required to close an event.

           

          In general, the smaller the duration value, the more quickly the threshold will open (or close) an event after the data violates threshold, and a duration of 0 implies that the event will be opened immediately when data violates the threshold value.

           

          For Absolute threshold, this means the event will be opened at the very first data point that goes above the threshold, and will close with the very first data point that goes below threshold.

           

          For Signature Threshold, there will still be some delay after the first data point goes above baseline, because it will need to wait until the average value of all points in the sampling window rise above the baseline. This means it may have to wait for several additional data points, until the calculated average value exceeds the baseline, in order for the event to open.

           

          Thanks,

          Jimish Thakkar

          • 2. Re: BPPM Events closure criteria with signature thresholds
            Alvaro Paronuzzi

            Hi Jimish,

             

            if we take a look to this screenshot we can see how reactive is BPPM in opening the event, while there is a relevant delay in the closure of the event:

             

            delay.jpg
            In this case the signature threshold has Minimum sampling window = 1 minute and Duration = Default.

            As you can see there are more than 10 minutes between the time when the metric goes within the threshold and the time when the event is closed.

             

            Why is it taking so long?

             

            Thanks and Regards,

             

            Al

            • 3. Re: BPPM Events closure criteria with signature thresholds
              Wanfeng Wang

              Hi Jimish,

              For Signature Threshold, there will still be some delay after the first data point goes above baseline, because it will need to wait until the average value of all points in the sampling window rise above the baseline. This means it may have to wait for several additional data points, until the calculated average value exceeds the baseline, in order for the event to open.

               

              how many additional data points needed in default settings  on BPPM9.6.02 ?

              to generate the signature event, you mean the calculated average value from all data points during the sampling window exceeds the high baseline,not  the signature thresholds, right?

               

              Thanks in advance,

              Wanfeng