Readdir (list) benchmark

[monthonk]

Tell us more about this new feature.

We have made some changes to improve readdir operation in both s3-client and s3-file-connector but we still don't have any way to measure the improvement or probably regression yet. We should extend our benchmark to include some readdir workloads.

[jamesbornholt]

One thing we're definitely missing here is benchmarks for large directories (> one max ListObjects call).