DPDK编译步骤

 

大页内存分配：

 NUMA系统（现在的linux一般都是）

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

1. [root@localhost dpdk-dst]# lscpu
2. Architecture: x86_64
3. CPU op-mode(s):32-bit,64-bit
4. ByteOrder:LittleEndian
5. CPU(s):2
6. On-line CPU(s)list:0,1
7. Thread(s) per core:1
8. Core(s) per socket:2
9. Socket(s):1
10. NUMA node(s):1
11. Vendor ID:GenuineIntel
12. CPU family:6
13. Model:61
14. Model name:Intel(R)Core(TM) i5-5200U CPU @2.20GHz
15. Stepping:4
16. CPU MHz:2194.916
17. BogoMIPS:4389.83
18. Hypervisor vendor:VMware
19. Virtualization type: full
20. L1d cache:32K
21. L1i cache:32K
22. L2 cache:256K
23. L3 cache:3072K
24. NUMA node0 CPU(s):0,1

从上面可以看到，

1. 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

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

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大页内存的挂载

1. mkdir /mnt/huge
2. mount -t hugetlbfs nodev /mnt/huge

 

---

1. 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
2. export RTE_TARGET=x86_64-native-linuxapp-gcc    //编译的环境变量
3. 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

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编译

1. make install T=$RTE_TARGET

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Loading Modules to Enable Userspace IO for DPDK 

2. cd x86_64-native-linuxapp-gcc/
3. sudo modprobe uio
4. sudo insmod kmod/igb_uio.ko
5. sudo insmod kmod/rte_kni.ko

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网卡绑定

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

1. [root@localhost tools]#./dpdk-devbind.py --status
3. Network devices using DPDK-compatible driver
4. ============================================
5. 0000:02:05.0'82545EM Gigabit Ethernet Controller (Copper)' drv=ig`b_uio unused=e1000
6. 0000:02:06.0'82545EM Gigabit Ethernet Controller (Copper)' drv=igb_uio unused=e1000
8. Network devices using kernel driver
9. ===================================
10. 0000:02:01.0'82545EM Gigabit Ethernet Controller (Copper)'if=eno16777736 drv=e1000 unused=igb_uio *Active*
11. 0000:02:07.0'82545EM Gigabit Ethernet Controller (Copper)'if=eno67109432 drv=e1000 unused=igb_uio
13. Other network devices
14. =====================
15. <none>

 

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

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