On Mon, May 02, 2016 at 05:48:02PM +0000, De Lara Guarch, Pablo wrote: > 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)?
OK Pablo. I will add the similar logic in the following forwarding modes in testpmd. macswap macfwd macfwd-retry csumonly icmpecho /Jerin > > Thanks, > Pablo
