Key SLO Computation

 

  • Retention for stats data must be at least two days. As generation or computation happens the next day, Infrastructure Management requires the raw data of all the 24 hours for accurate calculation. Calculation begins on the next day after SLO addition. 
  • If an SLO is added in the middle of the month, month-to-date compliance considers the days for which the SLO has been calculated only. 
  • Irrespective of the exact time of creation of the SLO, Infrastructure Management considers all data points for the day during computation. However, violation records (if any) are available immediately on SLO creation. 
  • Any change in Service Level Threshold values may result in a mismatch between the number of violated points in calculation and the number of violated points in violation details. 
  • In case of server restart, the number of violated points in violation details may not be accurate and may not match the number of violated points in calculation. 
  • Problem not resolved only considers violation records corresponding to the current date. 
  • If the SLO uses any schedule other than a full day schedule, the number of violated points from calculation may not match the number of violated points in violations details. 
  • Any change to the start of week or quarter configuration after SLO creation may result in abnormal values for the current week or quarter. This abnormality is corrected from the subsequent week or quarter. 
  • When calculating Quarter to Date compliance and Week to Date compliance, the starting month of the quarter and the starting day of the week is configured in the pronet.conf file. 
  • All old compliance values are invalidated if the start of the week or quarter is changed. 

  • The corresponding default pronet.confentries are as follows:

    pronet.businessview.firstmonthofquarter=0

    The above entry represents the first month of the quarter; valid entries are 0 to 11 (Jan to Dec). 

  • Columns displayed in the Compliance Matrix are configured in the pronet.conf file. 

  • The corresponding default pronet.confentries are as follows:

    pronet.businessview.showperiods=PD,WTD,MTD,QTD,YTD

    The above entry represents the periods to be displayed in the compliance matrix page in the Operations Console. Valid entries are: 

    • Previous Day: PD 
    • Previous Week: PW 
    • Previous Month: PM 
    • Previous Quarter: P 
    • Previous Year: PY 
    • Month to Date: MTD 
    • Year to Date: YTD 
    • Week to Date: WTD 
    • Quarter to Date: QTD 
  • Previous Quarter and Previous Year computations are started afresh from the date of upgrade to Infrastructure Management 7.1.

 

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