TCP on apnet. best is 38MB/sec NFS on apnet with ramdisk, best is 11MB/sec time for NFS server module to supply 32k from ramdisk: 350us minimum latency for nfssrv call within nfssrv (from dispatch to sendreply) is 28us minimum read latency (for 1 8k page) is 71us the NFS server itself is not the problem - it can deliver 90+ MB/sec. Perhaps the problem is the rpc layer?