Hi, I tried to enable vector i40e for an existing dpdk application just found that no performance gain is resulted. Is there anything we have to tune when using vPMD ? I have gone through the dpdk document but found nothing relevant. Any suggestions ? Or the benefits of vPMD are just not that significant ?
ps. I'm using 17.05 on Intel sandy bridge CPU. I have set RET_MACHINE to snb for enabling SSE needed for vPMD. Also the preconditions required for using I40E vPMD are missing in the document for I40E but are there in the IXGBE sections. rx_free_thresh is at 32 to fulfill the precondition and I'm sure vector is enablen from checking the log, that rx_vec_allowed and rx_bulk_alloc_allowed are both true. Thanks.
