DPDK编译步骤-布布扣-bubuko.com

大页内存分配：

NUMA系统（现在的linux一般都是）

echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
echo 1024 > /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages

[root@localhost dpdk-dst]# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 61
Model name:            Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
Stepping:              4
CPU MHz:               2194.916
BogoMIPS:              4389.83
Hypervisor vendor:     VMware
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              3072K
NUMA node0 CPU(s):     0,1

从上面可以看到，

NUMA node(s):          1

总共有一个NUMA node,注意这里的node个人理解就是具有独立内存和CPU总线的最小计算单元（每个node内部有自己的CPU总线和内存），而Core就是socket里独立的一组程序执行的硬件单元，比如寄存器，计算单元等,不单独占有内存。

非NUMA系统

echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages

大页内存的挂载

mkdir /mnt/huge
mount -t hugetlbfs nodev /mnt/huge

export RTE_SDK=/home/yml/dpdk/dpdk-stable-16.07.2    //这个是你生成的编译环境的路径
export RTE_TARGET=x86_64-native-linuxapp-gcc    //编译的环境变量
export DESTDIR = /home/yml/dpdk/dpdk-stable-16.07.2/  //你的安装路径，就是编译出来的文件的路径

编译

make install T=$RTE_TARGET

Loading Modules to Enable Userspace IO for DPDK


cd x86_64-native-linuxapp-gcc/
sudo modprobe uio
sudo insmod kmod/igb_uio.ko

网卡绑定

./tools/dpdk-devbind.py --status 查询网卡状态

[root@localhost tools]# ./dpdk-devbind.py --status
Network devices using DPDK-compatible driver
============================================
0000:02:05.0 ‘82545EM Gigabit Ethernet Controller (Copper)‘ drv=ig`b_uio unused=e1000
0000:02:06.0 ‘82545EM Gigabit Ethernet Controller (Copper)‘ drv=igb_uio unused=e1000
Network devices using kernel driver
===================================
0000:02:01.0 ‘82545EM Gigabit Ethernet Controller (Copper)‘ if=eno16777736 drv=e1000 unused=igb_uio *Active*
0000:02:07.0 ‘82545EM Gigabit Ethernet Controller (Copper)‘ if=eno67109432 drv=e1000 unused=igb_uio 
Other network devices
=====================
<none>

./tools/dpdk-devbind.py --bind=igb_uio  02:07.0