As of Rails 6.0 we're getting Ruby allocated objects count out of the box (https://blog.bigbinary.com/2019/07/23/rails-6-reports-object-allocations-made-while-rendering-view-templates.html). It means we're probably able to add this data without much effort at our structured logs through `Gitlab::InstrumentationHelper`, giving further information for web calls. Additionally, we can also make a change to `labkit-ruby` [`ActiveSupportSubscriber`](https://gitlab.com/gitlab-org/labkit-ruby/blob/master/lib/labkit/tracing/rails/active_support_subscriber.rb) in order to add this data to our distributed tracing (which is currently only available locally for GDK).