Will there always be a ramp for the the sum aggregator?

[Jinghan Xu]

Reading the doc

http://opentsdb.net/docs/build/html/user_guide/query/aggregators.html

I want to see if I understand correctly 

For the sum case, let's say my time-series don't align up, and there will be interpolations.

Will it always have a slow ramp up in the beginning as e.x the first data point has nothing to sum to, the value will only be itself

And gradually more time-series get involved, more interpolation values could be summed together for at a certain timestamp?

[ManOLamancha]

Yes, there will always be that ramp up and down effect due to interpolation. The best way to avoid that is to always give a downsampler in your queries on the frequency that you report your metric. E.g. if your metric is recorded every minute, set a 1 minute downsampler.