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导读 | 有几个云上的小伙伴想测测 VPC 网络性能,于是写了一些 dpdk 代码在阿里云上做了一个实验,也适用于其它云. |
安装相关的库
使用 root 登录, 更新一下源
# 备份原有的配置文件 | |
mkdir /etc/yum.repos.d/bak | |
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak/ | |
#使用阿里云的源覆盖 | |
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo | |
yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm | |
sed -i 's|^#baseurl=https://download.fedoraproject.org/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel* | |
sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel* | |
sudo dnf config-manager --set-enabled PowerTools | |
yum makecache | |
yum update | |
yum groupinstall "Development tools" | |
yum install gcc-gfortran kernel-modules-extra tcl tk tcsh terminator tmux kernel-rpm-macros elfutils-libelf-devel libnl3-devel meson createrepo numactl-devel | |
pip3 install pyelftools |
启用 iommu
sudo vi /etc/default/grub | |
// 在 GRUB_CMDLINE_LINUX 行添加 "intel_iommu=on iommu=pt" | |
// 保存退出 |
然后更新 grub 并重启系统
sudo grub2-mkconfig -o /boot/grub2/grub.cfg | |
sudo grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg | |
sudo reboot |
安装 DPDK
CentOS 上需要添加 /usr/local 路径, 主要是 LD_LIBRARY_PATH PATH 和 PKG_CONFIG_PATH 以及 sudo 的 path
sudo vi /etc/ld.so.conf.d/dpdk.conf | |
>> 添加如下 path | |
/usr/local/lib64 | |
>> 退出 | |
sudo ldconfig | |
vim ~/.bashrc | |
>> 添加如下 path | |
export PATH=/usr/local/bin:$PATH | |
export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig:${PKG_CONFIG_PATH} | |
保存后 source | |
source ~/.bashrc | |
sudo vim /etc/sudoers | |
>> 将 secure_path 添加 /usr/local/bin | |
Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin |
然后解压 dpdk,并编译安装
wget http://fast.dpdk.org/rel/dpdk-21.05.tar.xz | |
tar xf dpdk-21.05.tar.xz | |
cd dpdk-21.05 | |
meson build -D examples=all | |
cd build | |
ninja | |
sudo ninja install | |
sudo ldconfig |
设置 Hugepage 和 bind 接口
dpdk-hugepages.py --setup 4G | |
modprobe vfio-pci | |
dpdk-devbind.py -s | |
Network devices using kernel driver | |
=================================== | |
0000:00:05.0 'Virtio network device 1000' if=eth0 drv=virtio-pci unused=vfio-pci *Active* | |
0000:00:06.0 'Virtio network device 1000' if=eth1 drv=virtio-pci unused=vfio-pci *Active* |
注意虚拟机环境需要 noniommu_mode
ifconfig eth1 down | |
echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode | |
dpdk-devbind.py -b vfio-pci 0000:00:06.0 |
验证
dpdk-devbind.py -s | |
Network devices using DPDK-compatible driver | |
============================================ | |
0000:00:06.0 'Virtio network device 1000' drv=vfio-pci unused= | |
Network devices using kernel driver | |
=================================== | |
0000:00:05.0 'Virtio network device 1000' if=eth0 drv=virtio-pci unused=vfio-pci *Active* |
检查接口支持情况
下载代码
cd ~ | |
wget https://github.com/zartbot/learn_dpdk/archive/refs/heads/main.zip | |
unzip main.zip | |
cd learn_dpdk-main/ |
编译
cd 01_port_init/devinfo/ | |
make clean;make |
检查接口支持情况
./build/devinfo | |
EAL: Detected 24 lcore(s) | |
EAL: Detected 1 NUMA nodes | |
EAL: Detected shared linkage of DPDK | |
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket | |
EAL: Selected IOVA mode 'PA' | |
EAL: No available 1048576 kB hugepages reported | |
EAL: VFIO support initialized | |
EAL: Invalid NUMA socket, default to 0 | |
EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:05.0 (socket 0) | |
eth_virtio_pci_init(): Failed to init PCI device | |
EAL: Requested device 0000:00:05.0 cannot be used | |
EAL: Invalid NUMA socket, default to 0 | |
EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:06.0 (socket 0) | |
EAL: Using IOMMU type 8 (No-IOMMU) | |
TELEMETRY: No legacy callbacks, legacy socket not created | |
***************************************** | |
number of available port: 1 | |
========================================= | |
port: 0 Driver:net_virtio | |
Link down | |
MAC address: 00:16:3E:25:3F:0A | |
PCIe:0000:00:06.0 | |
Max RX Queue: 12 Desc: 65535 | |
Max TX Queue: 12 Desc: 65535 | |
Offload Capability: | |
DEV_RX_OFFLOAD_VLAN_STRIP | |
DEV_RX_OFFLOAD_UDP_CKSUM | |
DEV_RX_OFFLOAD_TCP_CKSUM | |
DEV_RX_OFFLOAD_TCP_LRO | |
DEV_RX_OFFLOAD_JUMBO_FRAME | |
----------------------------------------- | |
DEV_TX_OFFLOAD_VLAN_INSERT | |
DEV_TX_OFFLOAD_UDP_CKSUM | |
DEV_TX_OFFLOAD_TCP_CKSUM | |
DEV_TX_OFFLOAD_TCP_TSO | |
DEV_TX_OFFLOAD_MULTI_SEGS | |
========================================= |
测速
cd ~/learn_dpdk-main/02_send_recv/traffic_gen/
修改 send_pkt.c 的源目的地址,注意目的 MAC 在阿里云上要为 eeff.ffff.ffff
//init mac | |
struct rte_ether_addr s_addr = {{0x00, 0x16, 0x3e, 0x25, 0x0b, 0xe3}}; | |
struct rte_ether_addr d_addr = {{0xee, 0xff, 0xff, 0xff, 0xff, 0xff}}; | |
//init IP header | |
rte_be32_t s_ip_addr = string_to_ip("10.66.1.220"); | |
rte_be32_t d_ip_addr = string_to_ip("10.66.1.219"); |
由于接口支持有限,修改 common.h
static const struct rte_eth_conf port_conf_default = { | |
.rxmode = { | |
.max_rx_pkt_len = RTE_ETHER_MAX_LEN, | |
.mq_mode = ETH_MQ_RX_NONE, | |
}, | |
.txmode = {.mq_mode = ETH_MQ_TX_NONE,} | |
}; |
修改 portinit.c 关闭 RX-CHECKSUM OFFLOAD, 注释掉下面这段:
if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_CHECKSUM) | |
{printf("port[%u] support RX cheksum offload.\n", port); | |
port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_CHECKSUM; | |
} |
最后测速大概 3.3Mpps 左右,接近官方售卖时的 4Mpps
[root@iZuf64vmgrtj12kczyslhdZ traffic_gen]# ./build/run | |
EAL: Detected 24 lcore(s) | |
EAL: Detected 1 NUMA nodes | |
EAL: Detected shared linkage of DPDK | |
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket | |
EAL: Selected IOVA mode 'PA' | |
EAL: No available 1048576 kB hugepages reported | |
EAL: VFIO support initialized | |
EAL: Invalid NUMA socket, default to 0 | |
EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:05.0 (socket 0) | |
eth_virtio_pci_init(): Failed to init PCI device | |
EAL: Requested device 0000:00:05.0 cannot be used | |
EAL: Invalid NUMA socket, default to 0 | |
EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:06.0 (socket 0) | |
EAL: Using IOMMU type 8 (No-IOMMU) | |
TELEMETRY: No legacy callbacks, legacy socket not created | |
initializing port 0... | |
port[0] support TX UDP checksum offload. | |
port[0] support TX TCP checksum offload. | |
Port[0] MAC: 00:16:3e:25:0b:e3 | |
Core 1 doing RX dequeue. | |
Core 2 doing packet enqueue. | |
RX-Queue[0] PPS: 3280464 | |
RX-Queue[0] PPS: 3277792 | |
RX-Queue[0] PPS: 3303116 | |
RX-Queue[0] PPS: 3307443 | |
RX-Queue[0] PPS: 3296451 | |
RX-Queue[0] PPS: 3294396 | |
RX-Queue[0] PPS: 3297737 | |
RX-Queue[0] PPS: 3290069 | |
RX-Queue[0] PPS: 3279720 | |
RX-Queue[0] PPS: 3285987 | |
RX-Queue[0] PPS: 3279424 |
然后把 common.h 中收发都改为 4 个线程
测试结果和官方售卖的 4Mpps 一致了。
RX-Queue[0] PPS: 578918 | |
RX-Queue[1] PPS: 866823 | |
RX-Queue[2] PPS: 2288950 | |
RX-Queue[3] PPS: 865335 |
CPU Info
[root@iZuf64vmgrtj12kczyslhdZ traffic_gen]# cat /proc/cpuinfo | grep Xeon | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz | |
model name : Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz |
正文完
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