Hi, I have two traffic generators (pktgen) and a router (l3fwd) in between. The traffic generators are connected with the router via 10Gb links.
generato #1 <--10Gb full duplex--> router <--10Gb full duplex--> generator #2 Both generator send 64-bytes packets at full 10Gb rate. The problem is that l3fwd recieves only 7.5Gb/s on each port. I'd run pktgen instead of l3fwd and had the same result. If there's only one generator sending packets (10 Gb/s) and another is turned off, l3fwd can recieve all the packets (10 Gb/s) I figured out that the rte_eth_rx_burst function returns 0 quite often. This could mean that the problem is not in CPU. Is it possible to increase performance up to 20Gb/s or is there a hardware limit? I'd read the dpdk articles "How to get best performance with NICs on Intel platforms" and "IXGBE Driver", but it didn't help. The hardware is: - Intel(R) 82599EB 10 Gigabit Ethernet Controller - Intel(R) Xeon(R) CPU E5-2470 v2 @ 2.40GHz - PCI Express bandwidth of 32GT/s (Speed:5.0GT/s, Width: x8, Encoding Loss:20%) Memory: 8 hugepages x 1Gb The command is: ./build/l3fwd -c 0xf0000 -n 4 ? -p 0x3 ?config="(0,0,19),(1,0,18)" ?parse-ptype Any ideas how to resolve the perfomance issure will be appreciated. Thanks
