>> > time tar cf - M | pv > /dev/null 15.8 MB/sec (native) 3.48MB/sec >> > (FUSE) 254 Kb/sec (NFS) >> > > This test shows why glusterfs native protocol is better than NFS when you > need to scale out storage. Even with a context switch overhead on the client > side, glusterfs scores better due to the "clustered nature" of its protocol. > NFS has to undergo a second hop when it has to fetch data not available in > the server it has mounted from whereas for glusterfs it is always a single > hop to any server it wants to get data from. My tests was done on 2 bircks setup mounted in replica mode, thereby all needed data was avaiable on NFS node and there was no need to do additional hop.