Hi Tom, Thank you for your reply. All the cards are in a PCIe 3x slot, but my setup is overall 10G. I have 1x 10G on the generator side, and 2x10G on the echo side, using bond mode. Did you do some meadurement in 1X10G environment?
Thanks and Regards, János -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: 2018. január 16., kedd 17:28 To: János Pauer <[email protected]> Cc: [email protected] Subject: Re: [dpdk-users] performance difference between ixgbe and i40e Hi János, We actually saw the reverse behavior on our end. Does dmesg complains about your card not being on a PCI Express 3 x8 port? To achieve full 40G it is a requirement (assuming you have a 4X10G setup). Tom ----- Mail original ----- > De: "János Pauer" <[email protected]> > À: [email protected] > Envoyé: Mardi 16 Janvier 2018 16:01:31 > Objet: [dpdk-users] performance difference between ixgbe and i40e > Hi all, > > I am using OVS with dpdk v16.11. I have two setups for performance > measurement, which are almost identical, the only difference is that > one setup has i40e driven 10G NICs and the other one has ixgbe driven 10G > NICs. > I have MoonGen for packet generating, and testPMD to reflect the > traffic. The measurement results are much higher with the ixgbe-driven > card. It's about +20% with smaller packet sizes, and more than +40% with > bigger packet sizes. > Does anyone have any idea what can cause this? Is there any > significant difference between the mentioned drivers? > > Thanks and Regards, > János
