NFS v4.2 tuning

https://www.youtube.com/watch?v=JXASmxGrHvY at 5:30 the statement is made > if you get NFS tuned just right it is incredibly fast for **ultra small file transfers***... at 6:05 > I've heard of 4.0GB/sec using a sequential read... but you have to have all the infrastructure tuned just right. What, where, and how do I tune NFS v4.2 in **RHEL-8.10 or later** to achieve what is claimed above? Is this claim true, which this youtube vid seems to be made 3 years ago? Is there any good *NFS tuning* documentation as it pertains to NFS v4.2 in RHEL 8/9 or equivalent today? *v4.2 is the latest of NFS correct? Is there any proposed newer version of NFS on the horizon?* **are there any better settings than the default in /etc/nfs.conf and /etc/nfsmount.conf ?** **if I can place a bounty on this I will --> what is the max transfer speed in GB/sec that should be had, in RHEL-8.10 or later, over 100gbps infiniband, on NFS v4.2 (assuming RDMA?) and all the "tuned" options ??** The only *tuning* I am aware of is putting rdma into effect over infiniband; if someone else knows better/more let me know.