DPDK编译步骤

xiaozhuaia

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
  

• [iyunv@localhost dpdk-dst]# lscpu
  
• Architecture: x86_64
  
• CPU op-mode(s):32-bit,64-bit
  
• ByteOrder:LittleEndian
  
• 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
  
• sudo insmod kmod/rte_kni.ko
  

网卡绑定

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

• [iyunv@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
  

　　



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