My cluster is deployed on Linux. Now I want to switch to FreeBSD. Currently, I am testing the 25G network card of FreeBSD. Since it's not possible to transfer everything over, let's first try to deploy these two types together. However, during the testing process, it was found that the iperf3 network test between FreeBSD and FreeBSD was normal, and the iperf3 network test between Linux and Linux was also normal. However, there was a problem with the sending packets of the iperf3 test from FreeBSD to Linux.
Below are my test results。All the network cards hereThe MTU (Maximum Transmission Unit) of all the network cards here is 9000.
freebsd to freebsd
[root@mfsbsd roothome]$ dmesg|grep ice0
ice0: <Intel(R) Ethernet Network Adapter E810-XXV-2 - 1.43.2-k> mem 0xd4000000-0xd5ffffff,0xd6010000-0xd601ffff at device 0.0 numa-domain 1 on pci17
ice0: Loading the iflib ice driver
ice0: The DDP package was successfully loaded: ICE OS Default Package version 1.3.53.0, track id 0xc0000001.
ice0: fw 7.10.1 api 1.7 nvm 4.91 etid 800214ab netlist 4.4.5000-1.18.0.db8365cf oem 1.3909.0
ice0: Using 24 Tx and Rx queues
ice0: Reserving 24 MSI-X interrupts for iRDMA
ice0: Using MSI-X interrupts with 49 vectors
ice0: Using 4096 TX descriptors and 4096 RX descriptors
ice0: Ethernet address: b4:96:91:c3:a3:ea
ice0: PCI Express Bus: Speed 16.0GT/s Width x8
ice0: Firmware LLDP agent disabled
ice0: link state changed to UP
ice0: Link is up, 25 Gbps Full Duplex, Requested FEC: RS-FEC, Negotiated FEC: FC-FEC/BASE-R, Autoneg: False, Flow Control: None
ice0: netmap queues/slots: TX 24/4096, RX 24/4096
ice0: link state changed to DOWN
ice0: link state changed to UP
ice0: Link is up, 25 Gbps Full Duplex, Requested FEC: RS-FEC, Negotiated FEC: FC-FEC/BASE-R, Autoneg: False, Flow Control: None
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.108
Connecting to host 192.168.100.108, port 5201
[ 5] local 192.168.100.107 port 40442 connected to 192.168.100.108 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.06 sec 3.04 GBytes 24.6 Gbits/sec 0 1.76 MBytes
[ 5] 1.06-2.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 2.06-3.02 sec 2.78 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 3.02-4.06 sec 2.99 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 4.06-5.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 5.06-6.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 6.06-7.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 7.06-8.06 sec 2.89 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 8.06-9.06 sec 2.88 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 9.06-10.03 sec 2.80 GBytes 24.7 Gbits/sec 0 1.76 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 28.9 GBytes 24.7 Gbits/sec 0 sender
[ 5] 0.00-10.03 sec 28.9 GBytes 24.7 Gbits/sec receiver
iperf Done.
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.108 -R
Connecting to host 192.168.100.108, port 5201
Reverse mode, remote host 192.168.100.108 is sending
[ 5] local 192.168.100.107 port 26306 connected to 192.168.100.108 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.06 sec 3.05 GBytes 24.7 Gbits/sec
[ 5] 1.06-2.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 2.06-3.05 sec 2.86 GBytes 24.7 Gbits/sec
[ 5] 3.05-4.06 sec 2.91 GBytes 24.7 Gbits/sec
[ 5] 4.06-5.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 5.06-6.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 6.06-7.05 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 7.05-8.03 sec 2.81 GBytes 24.7 Gbits/sec
[ 5] 8.03-9.06 sec 2.97 GBytes 24.7 Gbits/sec
[ 5] 9.06-10.03 sec 2.45 GBytes 21.7 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 28.5 GBytes 24.4 Gbits/sec 0 sender
[ 5] 0.00-10.03 sec 28.5 GBytes 24.4 Gbits/sec receiver
iperf Done.
linux to linux
[root@hadoop-docker-test3 roothome]# iperf3 -c 192.168.100.104
Connecting to host 192.168.100.104, port 5201
[ 5] local 192.168.100.103 port 37014 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 2.42 GBytes 20.8 Gbits/sec 87 1.07 MBytes
[ 5] 1.00-2.00 sec 2.58 GBytes 22.2 Gbits/sec 0 1.16 MBytes
[ 5] 2.00-3.00 sec 2.61 GBytes 22.4 Gbits/sec 1 1.21 MBytes
[ 5] 3.00-4.00 sec 2.56 GBytes 22.0 Gbits/sec 0 1.25 MBytes
[ 5] 4.00-5.00 sec 2.18 GBytes 18.7 Gbits/sec 11 1.13 MBytes
[ 5] 5.00-6.00 sec 2.59 GBytes 22.2 Gbits/sec 0 1.19 MBytes
[ 5] 6.00-7.00 sec 2.72 GBytes 23.3 Gbits/sec 0 1.20 MBytes
[ 5] 7.00-8.00 sec 2.67 GBytes 23.0 Gbits/sec 2 1.02 MBytes
[ 5] 8.00-9.00 sec 2.49 GBytes 21.4 Gbits/sec 7 1.21 MBytes
[ 5] 9.00-10.00 sec 2.43 GBytes 20.9 Gbits/sec 0 1.25 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 25.3 GBytes 21.7 Gbits/sec 108 sender
[ 5] 0.00-10.00 sec 25.3 GBytes 21.7 Gbits/sec receiver
iperf Done.
[root@hadoop-docker-test3 roothome]# iperf3 -c 192.168.100.104 -R
Connecting to host 192.168.100.104, port 5201
Reverse mode, remote host 192.168.100.104 is sending
[ 5] local 192.168.100.103 port 37074 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 2.22 GBytes 19.1 Gbits/sec
[ 5] 1.00-2.00 sec 2.63 GBytes 22.6 Gbits/sec
[ 5] 2.00-3.00 sec 2.32 GBytes 20.0 Gbits/sec
[ 5] 3.00-4.00 sec 2.30 GBytes 19.8 Gbits/sec
[ 5] 4.00-5.00 sec 2.55 GBytes 21.9 Gbits/sec
[ 5] 5.00-6.00 sec 2.51 GBytes 21.5 Gbits/sec
[ 5] 6.00-7.00 sec 2.56 GBytes 22.0 Gbits/sec
[ 5] 7.00-8.00 sec 2.66 GBytes 22.9 Gbits/sec
[ 5] 8.00-9.00 sec 2.64 GBytes 22.7 Gbits/sec
[ 5] 9.00-10.00 sec 2.79 GBytes 23.9 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 25.2 GBytes 21.6 Gbits/sec 35 sender
[ 5] 0.00-10.00 sec 25.2 GBytes 21.6 Gbits/sec receiver
iperf Done.
freebsd to linux
[root@hadoop-docker-test3 roothome]# lspci | grep -i ethernet
06:00.0 Ethernet controller: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28 (rev 02)
06:00.1 Ethernet controller: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28 (rev 02)
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.104
Connecting to host 192.168.100.104, port 5201
[ 5] local 192.168.100.107 port 49741 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.06 sec 1.58 GBytes 12.8 Gbits/sec 439 131 KBytes
[ 5] 1.06-2.06 sec 1.17 GBytes 10.1 Gbits/sec 384 169 KBytes
[ 5] 2.06-3.06 sec 1.17 GBytes 10.1 Gbits/sec 412 158 KBytes
[ 5] 3.06-4.06 sec 1.22 GBytes 10.5 Gbits/sec 388 105 KBytes
[ 5] 4.06-5.05 sec 1.19 GBytes 10.3 Gbits/sec 410 259 KBytes
[ 5] 5.05-6.05 sec 1.21 GBytes 10.4 Gbits/sec 401 122 KBytes
[ 5] 6.05-7.06 sec 1.21 GBytes 10.3 Gbits/sec 421 174 KBytes
[ 5] 7.06-8.06 sec 1.21 GBytes 10.4 Gbits/sec 442 182 KBytes
[ 5] 8.06-9.04 sec 1.17 GBytes 10.2 Gbits/sec 478 213 KBytes
[ 5] 9.04-10.06 sec 2.13 GBytes 17.9 Gbits/sec 205 2.75 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.06 sec 13.3 GBytes 11.3 Gbits/sec 3980 sender
[ 5] 0.00-10.06 sec 13.3 GBytes 11.3 Gbits/sec receiver
iperf Done.
You have mail in /var/mail/root
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.104 -R
Connecting to host 192.168.100.104, port 5201
Reverse mode, remote host 192.168.100.104 is sending
[ 5] local 192.168.100.107 port 16107 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.06 sec 3.02 GBytes 24.4 Gbits/sec
[ 5] 1.06-2.06 sec 2.82 GBytes 24.4 Gbits/sec
[ 5] 2.06-3.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 3.06-4.06 sec 2.89 GBytes 24.7 Gbits/sec
[ 5] 4.06-5.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 5.06-6.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 6.06-7.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 7.06-8.05 sec 2.86 GBytes 24.7 Gbits/sec
[ 5] 8.05-9.06 sec 2.90 GBytes 24.7 Gbits/sec
[ 5] 9.06-10.04 sec 2.69 GBytes 23.6 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.04 sec 28.7 GBytes 24.6 Gbits/sec 0 sender
[ 5] 0.00-10.04 sec 28.7 GBytes 24.6 Gbits/sec receiver
iperf Done.
I tried adjusting parameters such as the network card queue size, but there are still issues with packet transmission between FreeBSD and Linux.
Below are my test results。All the network cards hereThe MTU (Maximum Transmission Unit) of all the network cards here is 9000.
freebsd to freebsd
[root@mfsbsd roothome]$ dmesg|grep ice0
ice0: <Intel(R) Ethernet Network Adapter E810-XXV-2 - 1.43.2-k> mem 0xd4000000-0xd5ffffff,0xd6010000-0xd601ffff at device 0.0 numa-domain 1 on pci17
ice0: Loading the iflib ice driver
ice0: The DDP package was successfully loaded: ICE OS Default Package version 1.3.53.0, track id 0xc0000001.
ice0: fw 7.10.1 api 1.7 nvm 4.91 etid 800214ab netlist 4.4.5000-1.18.0.db8365cf oem 1.3909.0
ice0: Using 24 Tx and Rx queues
ice0: Reserving 24 MSI-X interrupts for iRDMA
ice0: Using MSI-X interrupts with 49 vectors
ice0: Using 4096 TX descriptors and 4096 RX descriptors
ice0: Ethernet address: b4:96:91:c3:a3:ea
ice0: PCI Express Bus: Speed 16.0GT/s Width x8
ice0: Firmware LLDP agent disabled
ice0: link state changed to UP
ice0: Link is up, 25 Gbps Full Duplex, Requested FEC: RS-FEC, Negotiated FEC: FC-FEC/BASE-R, Autoneg: False, Flow Control: None
ice0: netmap queues/slots: TX 24/4096, RX 24/4096
ice0: link state changed to DOWN
ice0: link state changed to UP
ice0: Link is up, 25 Gbps Full Duplex, Requested FEC: RS-FEC, Negotiated FEC: FC-FEC/BASE-R, Autoneg: False, Flow Control: None
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.108
Connecting to host 192.168.100.108, port 5201
[ 5] local 192.168.100.107 port 40442 connected to 192.168.100.108 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.06 sec 3.04 GBytes 24.6 Gbits/sec 0 1.76 MBytes
[ 5] 1.06-2.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 2.06-3.02 sec 2.78 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 3.02-4.06 sec 2.99 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 4.06-5.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 5.06-6.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 6.06-7.06 sec 2.87 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 7.06-8.06 sec 2.89 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 8.06-9.06 sec 2.88 GBytes 24.7 Gbits/sec 0 1.76 MBytes
[ 5] 9.06-10.03 sec 2.80 GBytes 24.7 Gbits/sec 0 1.76 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 28.9 GBytes 24.7 Gbits/sec 0 sender
[ 5] 0.00-10.03 sec 28.9 GBytes 24.7 Gbits/sec receiver
iperf Done.
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.108 -R
Connecting to host 192.168.100.108, port 5201
Reverse mode, remote host 192.168.100.108 is sending
[ 5] local 192.168.100.107 port 26306 connected to 192.168.100.108 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.06 sec 3.05 GBytes 24.7 Gbits/sec
[ 5] 1.06-2.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 2.06-3.05 sec 2.86 GBytes 24.7 Gbits/sec
[ 5] 3.05-4.06 sec 2.91 GBytes 24.7 Gbits/sec
[ 5] 4.06-5.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 5.06-6.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 6.06-7.05 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 7.05-8.03 sec 2.81 GBytes 24.7 Gbits/sec
[ 5] 8.03-9.06 sec 2.97 GBytes 24.7 Gbits/sec
[ 5] 9.06-10.03 sec 2.45 GBytes 21.7 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 28.5 GBytes 24.4 Gbits/sec 0 sender
[ 5] 0.00-10.03 sec 28.5 GBytes 24.4 Gbits/sec receiver
iperf Done.
linux to linux
[root@hadoop-docker-test3 roothome]# iperf3 -c 192.168.100.104
Connecting to host 192.168.100.104, port 5201
[ 5] local 192.168.100.103 port 37014 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 2.42 GBytes 20.8 Gbits/sec 87 1.07 MBytes
[ 5] 1.00-2.00 sec 2.58 GBytes 22.2 Gbits/sec 0 1.16 MBytes
[ 5] 2.00-3.00 sec 2.61 GBytes 22.4 Gbits/sec 1 1.21 MBytes
[ 5] 3.00-4.00 sec 2.56 GBytes 22.0 Gbits/sec 0 1.25 MBytes
[ 5] 4.00-5.00 sec 2.18 GBytes 18.7 Gbits/sec 11 1.13 MBytes
[ 5] 5.00-6.00 sec 2.59 GBytes 22.2 Gbits/sec 0 1.19 MBytes
[ 5] 6.00-7.00 sec 2.72 GBytes 23.3 Gbits/sec 0 1.20 MBytes
[ 5] 7.00-8.00 sec 2.67 GBytes 23.0 Gbits/sec 2 1.02 MBytes
[ 5] 8.00-9.00 sec 2.49 GBytes 21.4 Gbits/sec 7 1.21 MBytes
[ 5] 9.00-10.00 sec 2.43 GBytes 20.9 Gbits/sec 0 1.25 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 25.3 GBytes 21.7 Gbits/sec 108 sender
[ 5] 0.00-10.00 sec 25.3 GBytes 21.7 Gbits/sec receiver
iperf Done.
[root@hadoop-docker-test3 roothome]# iperf3 -c 192.168.100.104 -R
Connecting to host 192.168.100.104, port 5201
Reverse mode, remote host 192.168.100.104 is sending
[ 5] local 192.168.100.103 port 37074 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 2.22 GBytes 19.1 Gbits/sec
[ 5] 1.00-2.00 sec 2.63 GBytes 22.6 Gbits/sec
[ 5] 2.00-3.00 sec 2.32 GBytes 20.0 Gbits/sec
[ 5] 3.00-4.00 sec 2.30 GBytes 19.8 Gbits/sec
[ 5] 4.00-5.00 sec 2.55 GBytes 21.9 Gbits/sec
[ 5] 5.00-6.00 sec 2.51 GBytes 21.5 Gbits/sec
[ 5] 6.00-7.00 sec 2.56 GBytes 22.0 Gbits/sec
[ 5] 7.00-8.00 sec 2.66 GBytes 22.9 Gbits/sec
[ 5] 8.00-9.00 sec 2.64 GBytes 22.7 Gbits/sec
[ 5] 9.00-10.00 sec 2.79 GBytes 23.9 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 25.2 GBytes 21.6 Gbits/sec 35 sender
[ 5] 0.00-10.00 sec 25.2 GBytes 21.6 Gbits/sec receiver
iperf Done.
freebsd to linux
[root@hadoop-docker-test3 roothome]# lspci | grep -i ethernet
06:00.0 Ethernet controller: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28 (rev 02)
06:00.1 Ethernet controller: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28 (rev 02)
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.104
Connecting to host 192.168.100.104, port 5201
[ 5] local 192.168.100.107 port 49741 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.06 sec 1.58 GBytes 12.8 Gbits/sec 439 131 KBytes
[ 5] 1.06-2.06 sec 1.17 GBytes 10.1 Gbits/sec 384 169 KBytes
[ 5] 2.06-3.06 sec 1.17 GBytes 10.1 Gbits/sec 412 158 KBytes
[ 5] 3.06-4.06 sec 1.22 GBytes 10.5 Gbits/sec 388 105 KBytes
[ 5] 4.06-5.05 sec 1.19 GBytes 10.3 Gbits/sec 410 259 KBytes
[ 5] 5.05-6.05 sec 1.21 GBytes 10.4 Gbits/sec 401 122 KBytes
[ 5] 6.05-7.06 sec 1.21 GBytes 10.3 Gbits/sec 421 174 KBytes
[ 5] 7.06-8.06 sec 1.21 GBytes 10.4 Gbits/sec 442 182 KBytes
[ 5] 8.06-9.04 sec 1.17 GBytes 10.2 Gbits/sec 478 213 KBytes
[ 5] 9.04-10.06 sec 2.13 GBytes 17.9 Gbits/sec 205 2.75 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.06 sec 13.3 GBytes 11.3 Gbits/sec 3980 sender
[ 5] 0.00-10.06 sec 13.3 GBytes 11.3 Gbits/sec receiver
iperf Done.
You have mail in /var/mail/root
[root@mfsbsd roothome]$ iperf3 -c 192.168.100.104 -R
Connecting to host 192.168.100.104, port 5201
Reverse mode, remote host 192.168.100.104 is sending
[ 5] local 192.168.100.107 port 16107 connected to 192.168.100.104 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.06 sec 3.02 GBytes 24.4 Gbits/sec
[ 5] 1.06-2.06 sec 2.82 GBytes 24.4 Gbits/sec
[ 5] 2.06-3.06 sec 2.87 GBytes 24.7 Gbits/sec
[ 5] 3.06-4.06 sec 2.89 GBytes 24.7 Gbits/sec
[ 5] 4.06-5.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 5.06-6.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 6.06-7.06 sec 2.88 GBytes 24.7 Gbits/sec
[ 5] 7.06-8.05 sec 2.86 GBytes 24.7 Gbits/sec
[ 5] 8.05-9.06 sec 2.90 GBytes 24.7 Gbits/sec
[ 5] 9.06-10.04 sec 2.69 GBytes 23.6 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.04 sec 28.7 GBytes 24.6 Gbits/sec 0 sender
[ 5] 0.00-10.04 sec 28.7 GBytes 24.6 Gbits/sec receiver
iperf Done.
I tried adjusting parameters such as the network card queue size, but there are still issues with packet transmission between FreeBSD and Linux.