DPDK testpmd VF Rx performance

[EHuan]

Hi Sir,

We had enabled X710 VFs:

echo 1 > /sys/bus/pci/devices/0000\:03\:00.0/sriov_numvfs

echo 1 > /sys/bus/pci/devices/0000\:03\:00.1/sriov_numvfs

[root@localhost ~]# /opt/dpdk-18.08/usertools/dpdk-devbind.py -s

Network devices using DPDK-compatible driver

============================================

0000:03:02.0 'Ethernet Virtual Function 700 Series 154c' drv=vfio-pci unused=i40evf,igb_uio

0000:03:0a.0 'Ethernet Virtual Function 700 Series 154c' drv=vfio-pci unused=i40evf,igb_uio

Network devices using kernel driver

===================================

0000:03:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=enp3s0f0 drv=i40e unused=igb_uio,vfio-pci

0000:03:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=enp3s0f1 drv=i40e unused=igb_uio,vfio-pci

0000:08:00.0 'Ethernet Connection X553 10 GbE SFP+ 15ce' if=enp8s0f0 drv=ixgbe unused=igb_uio,vfio-pci

0000:08:00.1 'Ethernet Connection X553 10 GbE SFP+ 15ce' if=enp8s0f1 drv=ixgbe unused=igb_uio,vfio-pci

The DPDK driver we try to bind are igb-uio and vfio-pci and they are the same result.

When spoofchk of VFs set on(default), there are always TX-errors(fwd mode=flowgen); when poofchk of VFs set off, TX is work fine but RX always zero. After stop fwd, Rx sometimes receives very few packets slowly.

Could you please help us and provide some suggestions?

Thanks.

PS: Attachment is DPDK testpmd log.