Documentation 
. Very funny 
We're using Enterprise MySQL (which I recommend if you have the funds)
Yes - the configuration has no UI and has to be made in config.php as you have noted. The table, however, is already created.
We were having problems with load spikes on our servers and we never got to the root cause. However, we're pretty sure that NFS performance had a significant part in it. Essentially, we got everything we could that was performance related off the NFS. We made a load of changes at the same time so it's not entirely scientific. The outcome was that the specific problem has gone plus we must have halved our average page load time and mostly don't see load averages on the servers that exceed 1.
It will be interesting to see if MDL-67052 makes things even better (although we have no issues with the present arrangement)
I suppose if you just take a step back... NFS tends to be a bottleneck and it just seems logical to avoid it where possible.
We're using Enterprise MySQL (which I recommend if you have the funds)
Yes - the configuration has no UI and has to be made in config.php as you have noted. The table, however, is already created.
We were having problems with load spikes on our servers and we never got to the root cause. However, we're pretty sure that NFS performance had a significant part in it. Essentially, we got everything we could that was performance related off the NFS. We made a load of changes at the same time so it's not entirely scientific. The outcome was that the specific problem has gone plus we must have halved our average page load time and mostly don't see load averages on the servers that exceed 1.
It will be interesting to see if MDL-67052 makes things even better (although we have no issues with the present arrangement)
I suppose if you just take a step back... NFS tends to be a bottleneck and it just seems logical to avoid it where possible.