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Hi, could you please explain what exactly happens if you push different values on a custom metric using the same datapoint ?

nmegalios
Newcomer

I noticed that when using the same datapoint (timestamp) while pushing data to a timeseries on a custom device, there is a kind of average calculation - even though it is not exact.

eg. I posted 3 values : 460,480 and 0 and on the UI I got a value of 350.

Is there an option for overwriting the previous values or evenmore adding the new value to the previous one ?

 

Thanks in advance

6 REPLIES 6

I had the idea that the values were averaged. But given the values you provide that doesn't seem the case... In the UI, where does the 350 appear? In Custom Charts?

Hi and thanks for the reply

It was my mistake, I sent value 460 twice so 350 is the average.

So, the second part of my question is still to be replied :

"Is there an option for overwriting the previous values or evenmore adding the new value to the previous one ? "

I know that I can create a custom chart where I can use SUM aggregation, but I want to know what happens with Davis calculations if I send two different values for the same timestamp.

Thanks

nmegalios
Newcomer

Hi and thanks for the reply

It was my mistake, I sent value 460 twice so 350 is the average.

So, the second part of my question is still to be replied :

"Is there an option for overwriting the previous values or evenmore adding the new value to the previous one ? "

I know that I can create a custom chart where I can use SUM aggregation, but I want to know what happens with Davis calculations if I send two different values for the same timestamp.

Thanks


Julius_Loman
Leader

If you are sending the data using an ActiveGate extension, you have to option to push relative data. However, the extension query method (which you must implement for an extension) will run in minute intervals. Thus you can't send data more often using an extension.

In Dynatrace, timeseries metrics have the finest granularity of 1 minute anyway.

Hi Julius,

I am sending data through rest Api, so I control the timestamp value.

I understood that from your previous comments. I'm afraid this is how it works at the moment. and if you push more values within a minute an average is used regardless of the timestamp.


I'm not sure which API you are using (probably the "old" one - /api/v1/entity/infrastructure/custom/{customDeviceId} ). If that's correct, I'd recommend trying the new Metrics v2 API if that makes more sense for you. I guess you will love the new API.
It allows you to use delta's as well. I'm not sure about the multiple records within a minute.

See more here about the API here:
https://www.dynatrace.com/support/help/dynatrace-api/environment-api/metric-v2/post-ingest-metrics/