Sum

This module sums all the values in the time-frame requested.

You can use sum to find the volume of something over a period.

how to use

Use it in alarms like this:

alarm: my_alarm

on: my_chart

lookup: sum -1m unaligned of my_dimension

warn: $this > 1000

sum does not change the units. For example, if the chart units is requests/sec, the result will be again expressed in the same units.

It can also be used in APIs and badges as &group=sum in the URL.

Examples

Examining last 1 minute successful web server responses:

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References

• https://en.wikipedia.org/wiki/Summation.