这个卡是个双口100G双芯片的卡，QSFP28 单口速率100G，双口200G
1.BIOS下pcie带宽设置
服务器BIOS下支持设置PCIE link width 设置x8x8，否则只能显示一个网口，如下图
E810-2CQDA2需要BIOS下设置该卡槽位pcie slot link width 设置x8x8
开机post页面按del键进入Bios设置对应安装pcie port为x8x8，不设置则只能识别到一个网口，有的机型不支持这个设置，所以需要先确认一下机型bios是否支持及X16插槽
Socket Configuration-> IIO Configuration
未设置pcie slot link width时系统下只能识别到一个网口

pcie slot link width 设置x8x8

修改保存配置重启进入系统可正常识别两个网口

2，驱动固件安装
先刷ice驱动再刷固件，否则会提示更新失败https://www.intel.com/content/www/us/en/download/15084/intel-ethernet-adapter-complete-driver-pack.html
cd ice-1.13.7/src/
make install
rmmod ice
modprobe ice
ethtool -i eth0
cd E810/Linux_x64/
./nvmupdate64e
ethtool -i eth0
查看日志：dmesg |grep -w ice

3.iperf带宽测试
单口速率可以达到99G 双口速率可以达到198G
安装iperf
1、下载安装包：
2、解压：tar -zxvf iperf-2.0.9-source.tar.gz
3、cd iperf-2.0.9-source.tar.gz
4、./configure && make && make install && cd …
注：arm机型编译netperf注意：
./configure --build=arm-linux # --build=编译平台

单口带宽测试
server: iperf -s
Client: iperf -c 10.1.1.1 -w 64k -t 600 -i 1 -P 80

双口bond4测试
配置bond
vim ifcfg-bond4

DEVICE=bond4
BOOTPROTO=static
ONBOOT=yes
TYPE=Bond
USERCTL=no
IPV6INIT=no
PEERDNS=yes
BONDING_MASTER=yes
BONDING_OPTS=“mode=4 miimon=100 xmit_hash_policy=layer3+4”
IPADDR=10.10.0.2
NETMASK=255.255.255.0
GATEWAY=10.10.0.1

vim ifcfg-ens25f0

DEVICE=ens25f0
BOOTPROTO=static
MTU=9000
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
SLAVE=yes
MASTER=bond4

vim ifcfg-ens25f1

DEVICE=ens25f1
BOOTPROTO=static
MTU=9000
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
SLAVE=yes
MASTER=bond4
测试命令同单口一样
设置好bond后需要重启网口关闭防火墙
systemctl stop firewalld.service
systemctl restart Network.service
双向测试
-r, –tradeoff 先做传送再做接收(對 Client 而言)
-d, –dualtest 同时做传送与接收

4.netperf延时测试
服务端：netserver
客户端：netperf -H 10.10.10.4 -t TCP_RR – -d rr -O “THROUGHPUT, THROUGHPUT_UNITS, MIN_LATENCY, MAX_LATENCY, MEAN_LATENCY”

5.rdma测试
5.1.步骤2已经装好驱动和固件
5.2.装irdma–>装rdma-core
安装依赖包
下载irdma安装包
https://www.intel.cn/content/www/cn/zh/download/19632/30368/linux-rdma-driver-for-the-e810-and-x722-intel-ethernet-controllers.html
下载rdma-core-46.0.tar.gz
解压安装
安装
yum install -y cmake
yum install -y libudev-devel
yum install -y python3-devel
yum install -y python3-docutils
yum install -y systemd-devel
yum install -y pkgconf-pkg-config

下载安装包：https://developer.aliyun.com/packageSearch?word=python3-Cython
rpm -ivh ninja-build-1.8.2-1.el8.x86_64.rpm
rpm -ivh pandoc-2.0.6-5.el8.x86_64.rpm pandoc-common-2.0.6-5.el8.noarch.rpm
rpm -ivh python3-Cython-0.29.2-1.el8.x86_64.rpm
tar zxf irdma-1.12.55.tgz
cd irdma-1.12.55
./buold.sh
./build_core.sh -y && ./install_core.sh安装
./build_core.sh -t /root/RDMA/Linux/irdma-1.13.43/rdma-core-46.0.tar.gz

modprobe irdma
ibv_devices

默认是iWARP，切换iwrap和roce2
roce2 :modprobe irdma roce_ena=1
改回iwarp
rmmod irdma && modprobe irdma
rmmod irdma && modprobe irdma roce_ena=1

5.3配置IP
TYPE=Ethernet
DEVICE=eth1
BOOTPROTO=static
IPADDR=10.10.0.1
NETMASK=255.255.255.0

5.4测试rdma
带宽测试调优设置
tuned-adm profile network-throughput
systemctl stop irqbalance.service
ifconfig eth1 mtu 9000
cpupower frequency-set -g performance
ulimit -s unlimited
ethtool -A eth1 tx on rx on
cd /root/Desktop/fw/ice-1.13.7/scripts/
./set_irq_affinity -x local eth1
关防火墙
systemctl stop firewalld.service
setenforce 0
iptables -F
iptables -L
关闭selinux
vim /etc/selinux/config
把SELINUX设置为disabled
SELINUX=disabled
带宽测试命令
ib_read_bw/ib_write_bw/ib_send_bw -F -R -q 4 -s 4096 -d rocep56s0 -a --report_gbits
ib_read_bw/ib_write_bw/ib_send_bw -F -S 1 -R -q 4 -s 4096 -d rocep168s0 10.10.10.3 -a --report_gbits

延时测试命令
ib_read_lat/ib_write_lat/ib_send_lat -s 2 -I 96 -a -d rocep58s0 -p 22341 -F
ib_read_lat/ib_write_lat/ib_send_lat -s 2 -I 96 -a -d rocep168s0 -p 22341 10.10.11.3 -F

厂商给的测试调优设置

Throughput
Driver/FW:
Linux*: ice.1.8.3
irdma: 1.8.45
NVM: 0x8000d846
Adapter Tuning:
systemctl stop irqbalance
scripts/set_irq_affinity -x all
RDMA Latency:
systemctl stop irqbalance
scripts/set_irq_affinity -x local
Enable push mode:
echo 1 > /sys/kernel/config/irdma/{rdmadev}
RDMA Bandwidth:
Enable Link Level Control:
ethtool -A tx on rx on
scripts/set_irq_affinity -x local

Latency:
Tuned-adm profile network-latency
systemctl stop irqbalance
ethtool -L {interface} combined {num of local CPUs}
ethtool -C adaptive-rx off adaptive-tx off
ethtool –C rx-usecs 0 tx-usecs 0
scripts/set_irq_affinity -x local
echo 16384 > /proc/sys/net/core/rps_sock_flow_entries
Enable aRFS:
for file in /sys/class/net/{interface}/queues/rx-*/rps_flow_cnt; do echo
{16384/num local cpus} > $file; done
Busy poll disabled:
sysctl -w net.core.busy_poll=0
sysctl -w net.core.busy_read=0
Busy Poll enabled:
sysctl -w net.core.busy_poll=50
sysctl -w net.core.busy_read=50

网口对应信息

Eth0 -> 10.10.10.4 -> rocep168s0 -> 42a6b7fffec4cbe8