Hi developers, Below is my hardware configuration:
Memory: 32G ( 16 G on two channels ) CPU: Xeon-D 1557 ( 12 cores, hyperthreading - 24 core ) NIC: Intel X552/X557 10GBASE-T My motherboard has 2 10G ports so that I set up the testing experiment in loopback. I have compiled DPDK successfully and below is the steps how I configured pktgen $ sudo modprobe uio $ sudo insmod ./build/kmod/igb_uio.ko $ sudo ./usertools/dpdkdevbind.py -b igb_uio xxx:xx.0 xxx:xx.1 $ sudo ./app/pktgen -c 0x1f -n 2 -- -P -m "[1:3].0, [2:4].1" <pktgen> start 0 I use core 1 and core 3 work for port 0 tx/rx respectively. Core 2 and core 4 work for port 1 tx/rx respectively. I have some questions listed below: 1. ( check my attachment d2.png ) The TX rate is almost 10G, however, the RX rate is much lower than TX rate. I suppose this should not happen. Is my configuration wrong in any place ? I checked other developers and TX rate normally can reach 999x and RX rate is almost the same as TX rate. 2. Please check the attachment ( start_log ). 2.1 *Packet Burst 32, RX Desc 512, TX Desc 1024*, mbufs/port 8192, mbuf cache 1024 Is 32 the default packet size ? How can I configure it to 64 ? Why RX Desc is different to TX Desc ? 2,2 *Port 0: Link Down <Enable promiscuous mode>* Port 1: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode> Port 0 is down at some points, how can I check the root cause to this issue? Thanks -- P.T -------------- next part -------------- A non-text attachment was scrubbed... Name: d2.png Type: image/png Size: 108971 bytes Desc: not available URL: <http://dpdk.org/ml/archives/users/attachments/20170721/c22e7dbe/attachment.png>
