Access metric of a transaction

Kibana version*: 7.5

Elasticsearch version: 7.5

APM Server version: 7.5.1

APM Agent language and version: Ruby Agent

Original install method (e.g. download page, yum, deb, from source, etc.) and version: DEB

Fresh install or upgraded from other version? Fresh Install

How to get the CPU usage of a transaction.

For example: I have a controller called posts_controller with "index" in my Rails App..
How shall I get the CPU usage of a specific transaction named Posts_Controller#index from Elastic APM

I don't know if that is possible. It's not a direct feature of Elastic APM either way.

Ok,thanks @mikker for clearing out !