rate()

The rate of change of the counter over the observed time period. This is the raw or simple rate, equivalent to delta(summary) or time_delta(summary). After accounting for resets, the last value is subtracted from the first value and divided by the duration between the last observed time and the first observed time.

2. rate(

4. summary CounterSummary

6. ) RETURNS DOUBLE PRECISION

For more information about counter aggregation functions, see the hyperfunctions documentation.

Required arguments

Name Type Description
summary CounterSummary The input CounterSummary from a counter_agg call

Returns

Name Type Description
rate DOUBLE PRECISION The per second observed rate computed from the CounterSummary

Sample usage

2. SELECT

4. id,

6. rate(summary)

8. FROM (

10. SELECT

12. id,

14. counter_agg(ts, val) AS summary

16. FROM foo

18. GROUP BY id

20. ) t