Howto test and tune Gigabit Networking (1000M)

[androsch]

Hi there,

just made a short test with my actual environment again including the netwrok-script from longsleep with his actual kernel.

Code:

Switching the Pine64+ to a fixed GbE-port on my FritzBox 7490 acting as client:

[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  24.8 MBytes  20.8 Mbits/sec   31             sender
[  4]   0.00-10.00  sec  24.7 MBytes  20.7 Mbits/sec                  receiver
[  6]   0.00-10.00  sec  25.6 MBytes  21.5 Mbits/sec   31             sender
[  6]   0.00-10.00  sec  25.5 MBytes  21.4 Mbits/sec                  receiver
[  8]   0.00-10.00  sec  33.9 MBytes  28.5 Mbits/sec   19             sender
[  8]   0.00-10.00  sec  33.8 MBytes  28.3 Mbits/sec                  receiver
[ 10]   0.00-10.00  sec  28.5 MBytes  23.9 Mbits/sec   28             sender
[ 10]   0.00-10.00  sec  28.3 MBytes  23.7 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec   113 MBytes  94.6 Mbits/sec  109             sender
[SUM]   0.00-10.00  sec   112 MBytes  94.1 Mbits/sec                  receiver

So about 100 Mbits as expected with a 100Mb server, but 109 retries!

Same connection, but setting down the Pine64 to a fixed 100Mb port:

[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  28.2 MBytes  23.7 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  28.0 MBytes  23.5 Mbits/sec                  receiver
[  6]   0.00-10.00  sec  28.1 MBytes  23.6 Mbits/sec    0             sender
[  6]   0.00-10.00  sec  27.9 MBytes  23.4 Mbits/sec                  receiver
[  8]   0.00-10.00  sec  28.3 MBytes  23.8 Mbits/sec    0             sender
[  8]   0.00-10.00  sec  28.1 MBytes  23.6 Mbits/sec                  receiver
[ 10]   0.00-10.00  sec  28.3 MBytes  23.8 Mbits/sec    0             sender
[ 10]   0.00-10.00  sec  28.2 MBytes  23.6 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec   113 MBytes  94.8 Mbits/sec    0             sender
[SUM]   0.00-10.00  sec   112 MBytes  94.1 Mbits/sec                  receiver

same speed with not a single retry!

Same connection with GbE port, but Pine64 this time acting as server:

[ ID] Interval           Transfer     Bandwidth
[  5]   0.00-10.05  sec  1008 KBytes   822 Kbits/sec                  sender
[  5]   0.00-10.05  sec   901 KBytes   735 Kbits/sec                  receiver

So this is ridiculous even with a 100Mb client.

Switching the Pine64 back to a fixed 100Mb port acting as server:

[ ID] Interval           Transfer     Bandwidth
[  5]   0.00-10.06  sec   113 MBytes  94.3 Mbits/sec                  sender
[  5]   0.00-10.06  sec   113 MBytes  94.3 Mbits/sec                  receiver

Will setup a second connection with my GbE-Win10 pc later and post the results also.

BTW: Also use a fixed MAC-addr with the leading 00:06:dc numbers and disabled ipv6 and avahidaemon, if somebody still thinks this makes really a difference!

Still no improvement and i can confirm my Fritzbox (FritzOS 6.60, also actual version) is capable to handle GbE with some other PCs i'm using.