Kamon is creating thousands of PassivateIntervalTick

[Symbianx]

Hello,

We're using Kamon with our akka cluster applications and after updating to 2.6.0 from 2.4.1 we noticed tens of thousands of spans being created every 20 milliseconds with the name tell(PassivateIntervalTick$).

The spans start appearing right after a tell(ShardStarted) is created which leads me to believe this is some sort of internal akka poller.

See the screenshot for what I mean:

The list keeps growing and the trace is now 11 hours long

Because they are so many (useless) spans, the trace becomes unreadable and very hard to analyse. This also causes a strain on the traces storage and at a point the trace is just too big and can't be retrieved.

Is this the intended behaviour? If so, is there a way to disable this spans?