When running quay.io/openshift-scale/etcd-perf following the instructions at https://docs.openshift.com/container-platform/latest/scalability_and_performance/recommended-performance-scale-practices/recommended-etcd-practices.html

the output is difficult to interpret.
Currently the output is:

INFO: 99th percentile of fsync is 2113536 ns
INFO: 99th percentile of the fsync is within the recommended threshold: - 10 ms, the disk can be used to host etcd

If would be much easier if the fsync p99 was converted in milliseconds so this would read

INFO: 99th percentile of fsync is 2113536 ns or 2.11 ms.
INFO: 99th percentile of  fsync is below the recommended threshold of 10 ms, the disk can be used to host etcd

If you think the issue is valid, I can submit a PR.