I'm not really certain that this is a valid concern to add into the mix. Yes there is the stat issue with NFS, but if you have a fast filer then 2+ms is an eter

I'm not really certain that this is a valid concern to add into the mix. Yes there is the stat issue with NFS, but if you have a fast filer then 2+ms is an eternity (for example: http://www.storageperformance.org/benchmark_results_files/SPC-1/NetApp/A00115_NetApp_FAS6240-cluster/a00115_NetApp_FAS6240-cluster_SPC-1_executive-summary.pdf http://www.storageperformance.org/benchmark_results_files/SP...) If WPengine is getting 2+ms response times then something is very wrong (are they using linux backed vanilla linux style NFS storage? ....bad, bad, bad). If not, then they need to investigate their load averages on their filers :P.