Read a lot discussions 'bout the topic and still I can't manage to achieve higher speeds. PassMark Advanced network test shows around 270Mbit max via TCP, in both ways, UDP is around 520Mbit, but my focus is on TCP
---- 1box: Win7 sp1, GA-MA78GM-S2H, card: onboard Realtek PCIe GBE, jumbo frames set at@9k(max), newest lan driver(2011) and reg.TcpWindowSize tweak (@131400)
---- switch TP-Link SG10008D (with jumbo frames support @16k)
---- 2box:WinXP sp3, Atom d410pt, card:TP-Link TG-3269, jumbo frames set at@7k(max), newest lan driver (2011) and reg.TcpWindowSize tweak (@131400)
switch and 2box tp-link card are Automatic MDI/MDIX (don't sure 'bout 1box onboard Realtek but it's suppose to be) and all cables are cat5e, auto-negotiation shows connection 1Gb/s estabilished also hard drives are benchmarking@85MB/s so...
- QoS disabled
- LargeSend Offload: enable
- FlowControl: disabled
- GreenEthernet: enabled
there's no effect even messing around with those above (!QoS)
but when I
ping -f -l 5122 next_box_IPaddr (in fact any value >1492) i've got "Packet needs to be fragmented but DF set." so is that in fact shows no Jumbo Frames not working properly in OS?
have anyone got any ideas os this is a result of my misunderstanding.
Appreciate your help.