The object storage needs throttling for reads and writes (bytes per second and objects per second). If it is not available [benchmarks show](https://git.easter-eggs.org/biceps/biceps) that it degrades reads, writes and latency.
### Discussions
* [RBD QoS settings tutorials](https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/27FB2W7BFBZQYVYGLPTWTJO5373WUUED/)