RVP a écrit : > BERTRAND Joel wrote: > >> Now jumbo frames are enabled >> ... >> With old Realtek and MTU 1500, throughput was about 10 Mbytes/s. >> With a new Intel adapter and jumbo frames, I obtain the same result >> ... >> I suppose there is somewhere a bottleneck, but where ? > > 1. Are ethernet cards on either end gigabit adapters?
Yes. > 2. Are the cards configured as such by their respective OSes? > (use ifconfig -v ifname) Yes. NetBSD side : legendre:[~] > ifconfig wm0 wm0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 9000 capabilities=7ff80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx> capabilities=7ff80<TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx> capabilities=7ff80<TCP6CSUM_Tx,UDP6CSUM_Rx,UDP6CSUM_Tx,TSO6> enabled=0 ec_capabilities=17<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,EEE> ec_enabled=2<VLAN_HWTAGGING> address: b4:96:91:92:77:6e media: Ethernet autoselect (1000baseT full-duplex) status: active inet 192.168.12.1/24 broadcast 192.168.12.255 flags 0x0 inet6 fe80::b696:91ff:fe92:776e%wm0/64 flags 0x0 scopeid 0x1 qNAP side : [~] # ethtool eth0 ... Speed: 1000Mb/s Duplex: Full Port: MII ... > 3. Is the ethernet cable between the two machines Cat-5E or > better (with all 8 wires)? (Performance is sometimes not up > to spec with some cards and mere Cat-5 cables.) Cat6a... Regards, JKB