Hi all, I have recently setup a NFS share with IPv6 addresses on a gigabit lan. The performance is abysmal: 500 KB/s max.
The same server and client on the same lan, have no trouble reaching tens of MB/s. Time spent copying some big files from the server to a local disk: v4: sent 86109382 bytes received 31 bytes 24602689.43 bytes/sec v6: sent 49660678 bytes received 31 bytes 266277.26 bytes/sec All mounts were using tcp. IPv6 speed is about 100 time slower than IPv4. I don't believe I'm doing anything wrong. How can I diagnose/fix this issue ? -- Francois Tigeot
