Output of the "noobaa-cli diagnose metrics" shows various counters nsfs_counters, op_stats_counters, fs_worker_stats_counters.
But when NooBaa documentation is referred then fs_worker_stats_counters are missing in the document. 

NooBaa Document --> https://github.com/noobaa/noobaa-core/blob/master/docs/NooBaaNonContainerized/Monitoring.md

CES S3 Exploration Document which have noobaa-cli output --> https://ibm.ent.box.com/file/1896046387137

As a part of this bug, NooBaa documentation need to be updated to have all supported stats.