Hi Jerin, > -----Original Message----- > From: Jerin Jacob [mailto:jerin.jacob at caviumnetworks.com] > Sent: Monday, May 02, 2016 1:00 PM > To: dev at dpdk.org > Cc: De Lara Guarch, Pablo; Jerin Jacob > Subject: [dpdk-dev] [PATCH] app/testpmd: add packet data prefetch in > macswap loop > > prefetch the next packet data address in advance in macswap loop > for performance improvement. > > Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com> > --- > app/test-pmd/macswap.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/app/test-pmd/macswap.c b/app/test-pmd/macswap.c > index 154889d..c10f4b5 100644 > --- a/app/test-pmd/macswap.c > +++ b/app/test-pmd/macswap.c > @@ -113,6 +113,9 @@ pkt_burst_mac_swap(struct fwd_stream *fs) > if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ) > ol_flags |= PKT_TX_QINQ_PKT; > for (i = 0; i < nb_rx; i++) { > + if (likely(i < nb_rx - 1)) > + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1], > + void *)); > mb = pkts_burst[i]; > eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *); > > -- > 2.1.0
This looks good. Could you also add it in the other forwarding modes (the ones that make changes in the packets)? Thanks, Pablo
