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Are past baseline violations ignored or do they get built into the baseline?

jason_ostroski
Dynatrace Pro
Dynatrace Pro

As per documentation (https://community.dynatrace.com/community/display/...) :

AppMon does not use averages or standard deviation to calculate baselines for response time. Instead, baselines are...

  • calculated for the 50th percentile (median) and 90th percentile (slowest 10 %) of the actual Business Transaction response time.
  • updated every 5 minutes for the first day; every day at midnight through the previous 7 days (for as many days as there is data until AppMon has 7 days of data).

Violations are identified if at least two significant measurements are above the threshold.

As the baseline is calculated every day using the data of the past 7 days, it automatically adapts to changes in your application.

Considering this scenario: If last Monday there was a large spike in response time at noon and this Monday at noon, we had a spike that was smaller than last week's, but still above the usual median for the app, would there be a violation?

When creating the baseline, how does AppMon consider these violations? Does it automatically ignore the data points during the violation or does it build them in to it's calculation?

2 REPLIES 2

Joe_Hoffman
Dynatrace Leader
Dynatrace Leader

Jason, The baseline violations themselves are not part of the baseline, but simply historical values defines the baseline. Violations are based on whether a value is outside the baseline at the time of the value being evaluated.

HTH

joe hoffman

Thanks Joe!

I thought that would be the case, but wanted confirmation. The historical data points are evaluated into the baseline regardless of if they triggered a violation or not.

Jason.