This is regarding agent bricks and want to understand DBU consumed while creating a knowledge assistant agent. Can anyone please share any video or documentation which will help me in this regard..

Let's say I take a pdf on which we want Knowledge assistant agent. So want to understand 2 things:

1. DBU consumed during creating agent
2. DBU consumed while using agent in playground

I am referring this https://docs.databricks.com/aws/en/admin/system-tables/billing.

I have tried using system.billing.usage  but it shows null for agent bricks id and product_features.agent_bricks.problem_type. So, it's not clear how much dbu is getting consumed.