Ethernet speed about 500Mbps

VisionFive（English Forum）
1

Hello, I notice I got speed around 500Mbps using iperf3
is Ethernet port limited to 500Mbps or it Gigabit?

iperf3 on VisionFive

Connecting to host 192.168.88.4, port 5201
[ 15] local 192.168.88.2 port 40912 connected to 192.168.88.4 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[ 15]   0.00-1.00   sec  61.5 MBytes   516 Mbits/sec   37    598 KBytes       
[ 15]   1.00-2.00   sec  57.5 MBytes   482 Mbits/sec    0    659 KBytes       
[ 15]   2.00-3.00   sec  58.8 MBytes   493 Mbits/sec    0    717 KBytes       
[ 15]   3.00-4.00   sec  58.8 MBytes   493 Mbits/sec   10    559 KBytes       
[ 15]   4.00-5.00   sec  57.5 MBytes   482 Mbits/sec    0    628 KBytes       
[ 15]   5.00-6.00   sec  57.5 MBytes   482 Mbits/sec    0    689 KBytes       
[ 15]   6.00-7.00   sec  58.8 MBytes   493 Mbits/sec    9    523 KBytes       
[ 15]   7.00-8.00   sec  57.5 MBytes   482 Mbits/sec    0    592 KBytes       
[ 15]   8.00-9.00   sec  58.8 MBytes   493 Mbits/sec    0    658 KBytes       
[ 15]   9.00-10.00  sec  58.8 MBytes   493 Mbits/sec    0    723 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[ 15]   0.00-10.00  sec   585 MBytes   491 Mbits/sec   56             sender
[ 15]   0.00-10.02  sec   583 MBytes   488 Mbits/sec                  receiver

same test for my local server

Connecting to host 192.168.88.3, port 5201
[ 15] local 192.168.88.2 port 53860 connected to 192.168.88.3 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[ 15]   0.00-1.00   sec   114 MBytes   957 Mbits/sec    0    322 KBytes       
[ 15]   1.00-2.00   sec   112 MBytes   939 Mbits/sec    0    337 KBytes       
[ 15]   2.00-3.00   sec   112 MBytes   941 Mbits/sec    0    351 KBytes       
[ 15]   3.00-4.00   sec   112 MBytes   940 Mbits/sec    0    351 KBytes       
[ 15]   4.00-5.00   sec   112 MBytes   940 Mbits/sec    0    351 KBytes       
[ 15]   5.00-6.00   sec   112 MBytes   941 Mbits/sec    0    368 KBytes       
[ 15]   6.00-7.00   sec   113 MBytes   945 Mbits/sec    0    385 KBytes       
[ 15]   7.00-8.00   sec   112 MBytes   941 Mbits/sec    0    385 KBytes       
[ 15]   8.00-9.00   sec   112 MBytes   939 Mbits/sec    0    385 KBytes       
[ 15]   9.00-10.00  sec   112 MBytes   942 Mbits/sec    0    385 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[ 15]   0.00-10.00  sec  1.10 GBytes   943 Mbits/sec    0             sender
[ 15]   0.00-10.02  sec  1.10 GBytes   939 Mbits/sec                  receiver

I’m using Ubuntu 22.04 LTS on VisionFive and Ubuntu 20.04 LTS on my home server and I repeated the test many times and same result

2

Yes，a bit slower than standard gigabit Internet speeds，this is related to the design issue of JH7100 chipset, and we will fix this issue in JH7110 chipset design.
This is Errata_Sheet：VisionFive Errata Sheet | RVspace

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