PROMQL deriv()

[Rodolphe Ghio]

Hi everyone !
First of all I wish you a happy new year.

I would like to use the deriv() function but this function needs a range vector so my query should look like this: deriv(<metric_name>[<time_range>]). But I don't really understand how can I choose an acurate time_range in square brackets.
Can someone help me to find out how can choose the right time_range ?

King regards,
GHIO Rodolphe

[Julien Pivotto]

Please look at
https://www.robustperception.io/what-range-should-i-use-with-rate

or
https://grafana.com/blog/2020/09/28/new-in-grafana-7.2-__rate_interval-for-prometheus-rate-queries-that-just-work/


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Julien Pivotto
@roidelapluie

[Rodolphe Ghio]

Thanks a lot !
That was exactly what I was looking for !
Have a great day !