From looking at some profiles with users:

in profiles, when ingest is done and a commit is happening, it's not immediately obvious in the profile whats expensive for commit vs. whats expensive for ingest

e.g. once it starts to commit after ingest is done input_map operators should no longer do any work (but because it has been running for so long they show up as expensive)

I think it would be good to be able to request a "reset" for the profile to count not from the start but e.g., after ingest is done you'd like to "count from 0" to get a better picture of what are the expensive operators are doing during transaction ...