On Wed, 13 Dec 2017 11:32:32 -0800 chunmei Liu <chunmei....@intel.com> wrote:
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c > index 1e07895..30fdbc1 100644 > --- a/drivers/net/ixgbe/ixgbe_rxtx.c > +++ b/drivers/net/ixgbe/ixgbe_rxtx.c > @@ -1589,6 +1589,7 @@ ixgbe_rx_alloc_bufs(struct ixgbe_rx_queue *rxq, bool > reset_mbuf) > } > > rte_mbuf_refcnt_set(mb, 1); > + mb->next = NULL; > mb->data_off = RTE_PKTMBUF_HEADROOM; > This will have measurable performance impact because the next pointer is on the second cache line.
