Description
current description :
Number of existing items mutated per second in this bucket (measured from vb_active_ops_update + vb_replica_ops_update + vb_pending_ops_update)
Number of new items created per second in this bucket (measured from vb_active_ops_create + vb_replica_ops_create + vb_pending_ops_create)
the description should say that these stats are from disk and not memory