XigmaNAS

there is only one NIC on this motherboard so I'm not using any link aggregation.
I have read all of the links I can about it, I'm not using anything special as far as the NIC setup is concerned.

NAS4Free 9.1.0.1 (636)
Gigabyte Z68AP-D3
1 x Realtek RTL8111E

iSCSI is the only active service.

Network->Lan management shows 9000, no ip6, gateway is defined for NTP.
the system has been rebooted.
no matter what I do I only see 1500 on the status->lan page it refuses to let me change it.

is the system auto-tuning down when it sets up the NTP ?

if you revise wiki: http://wiki.nas4free.org/doku.php?id=na ... s_hardware

you can see that realtek max MTU is 6000 not 9000, use 6000 or less and must work

Thanks you so much, that fixed it.
I used MTU = 6000 and now it receives packets at apx 6000 size and sends out data at apx 4500 size. this was all I needed to get over 90% of the 1Gbs capacity ( up from about 50% ). my little test setup doesn't have enough disk bandwidth to keep the NIC that busy all the time. One more dive should fix that.

if you need better speed or MTU, please consider to buy an Intel NIC.

I have the same one on board:

1 x Realtek RTL8111E

now it's set to 6000 too, thanks for the information

you never stop learning

Hy you can check the correct MTU rate with

ping -f -l [your packetsize to check] [targethost]

example ping -f -l 1500 192.168.178.28

if [your packetsize to check] is too big you get packet must be fragmentet

than try a smaler size of packets

if you have a switch in your network, the switch can have other MTU than the NIC

regards Joman