Hi, I am new to DPDK and i tried searching the archives in case this had been discussed but couldnt find any references and hence this email:
What is the significance of " -n NUM: Number of memory channels per processor socket" which is passed as an EAL option? I have a virtual machine (VM) spawned using VirtualBox and i am trying to use DPDK to get faster access to packets there. I did lscpu, but that didnt give me anything interesting that i could use here: abhishekV at VirtualBox:~/dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/app$ sudo lscpu [sudo] password for abhishekV: 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: 58 Stepping: 9 CPU MHz: 2594.017 BogoMIPS: 5188.03 L1d cache: 32K L1d cache: 32K L2d cache: 6144K NUMA node0 CPU(s): 0,1 abhishekV at VirtualBox:~/dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/app$ I understand that i have two cores and hence should use -c 1 (since i have cores 0 and 1). However, i dont understand what to give as the "-n" option. Is it always 4? Thanks, Abhishek
