Non negative derivative on prometheus?

[Xabier Larrakoetxea]

Hi!

I'm having a problem using deriv function, because when I do deployments a big valley is rendered on my graph, you can see on the image:

In graphite you would use nonNegativeDerivative to overcome this issue, Is there a way to do something similar in prometheus?

[Ben Kochie]

Is this a rate of a counter metric?  Why not use rate() or irate() instead?  Graphite is missing a proper counter reset handling rate function, which is why you have to use nonNegativeDerivative.

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[Matthias Rampke]

And if you really need to just drop all negative values,

<any expression> >= 0

will do the trick. It works on a per-timeseries level.

/mr

[Xabier Larrakoetxea]

Awesome! Thank you both of you. Actually I'm using rating to get that type of information. On the other hand I dind't think of using operators!

Once again thank you for your fast responses!

El lunes, 18 de enero de 2016, 9:35:17 (UTC+1), Matthias Rampke escribió:

And if you really need to just drop all negative values,

<any expression> >= 0

will do the trick. It works on a per-timeseries level.

/mr

On Jan 18, 2016 09:22, "Ben Kochie" <sup...@gmail.com> wrote:

Is this a rate of a counter metric?  Why not use rate() or irate() instead?  Graphite is missing a proper counter reset handling rate function, which is why you have to use nonNegativeDerivative.

On Mon, Jan 18, 2016 at 9:16 AM, Xabier Larrakoetxea <slo...@gmail.com> wrote:

Hi!

I'm having a problem using deriv function, because when I do deployments a big valley is rendered on my graph, you can see on the image:

In graphite you would use nonNegativeDerivative to overcome this issue, Is there a way to do something similar in prometheus?

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