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prometheuspromql

Get Average Increase Over Time

I am using increase on a counter metric to get the increase in HTTP connections for the last 10 minutes:

increase(http_connections{kind="test"}[10m])

This expression returns two distinct values within my test environment:

15.789
12.631

How can I get the average of the above values?

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Solution

  • To flatten that out, you can either increase the interval, simply query for the increase of the last 20min and then divide that by two:

    increase(http_connections{kind="test"}[20m]) / 2

    (or query the last 30 min and divide by 3)...

    Alternatively you can also use the avg_over_time() function with subquery:

    avg_over_time(increase(http_connections{kind="test"}[10m])[10m:1m])

    this will take one value per minute over the last 10 minutes and use the average of these 10 values as the current value