[IO-500] Separate "find" scores for easy/hard?

Hi Guys, I've been working on improving CephFS scores during the hard portions of the test suite and noticed something interesting. We currently have a fairly large discrepancy between easy and hard mdtest write tests meaning we also have a fairly large disparity in the amount of data written during each test. What I've noticed is that as I've improved the throughput of mdtest hard writes, our find throughput has dropped. You can see an example of that happening in the results posted here: https://github.com/ceph/ceph/pull/34574 That makes sense if we are slower at finding files in a single giant directory vs spread across many directories being serviced by dedicated MDSes. IE I think the find score is probably overinflated when significantly less data is written during the hard mdtest write phase relative to the easy write phase. Does this seem like a reasonable hypothesis? If so, it seems like this could be solved by running separate find tests across the easy and hard datasets and scoring them in the usual way. Thoughts? Mark