From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: <dev@dpdk.org>
Cc: <pablo.de.lara.guarch@intel.com>,
Jerin Jacob <jerin.jacob@caviumnetworks.com>
Subject: [dpdk-dev] [PATCH] app/testpmd: add packet data prefetch in macswap loop
Date: Mon, 2 May 2016 17:29:37 +0530 [thread overview]
Message-ID: <1462190377-26865-1-git-send-email-jerin.jacob@caviumnetworks.com> (raw)
prefetch the next packet data address in advance in macswap loop
for performance improvement.
Signed-off-by: Jerin Jacob <jerin.jacob@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
next reply other threads:[~2016-05-02 12:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-02 11:59 Jerin Jacob [this message]
2016-05-02 17:48 ` De Lara Guarch, Pablo
2016-05-03 12:46 ` Jerin Jacob
2016-05-03 9:45 ` Bruce Richardson
2016-05-03 9:48 ` De Lara Guarch, Pablo
2016-05-03 10:16 ` Bruce Richardson
2016-05-03 9:50 ` Ivan Boule
2016-05-03 10:20 ` Bruce Richardson
2016-05-10 12:26 ` Ananyev, Konstantin
2016-05-03 14:07 ` [dpdk-dev] [PATCH v2] app/testpmd: add packet data pointer prefetch in the forwarding loop Jerin Jacob
2016-05-03 14:33 ` Thomas Monjalon
2016-06-07 11:19 ` De Lara Guarch, Pablo
2016-06-08 15:57 ` Thomas Monjalon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1462190377-26865-1-git-send-email-jerin.jacob@caviumnetworks.com \
--to=jerin.jacob@caviumnetworks.com \
--cc=dev@dpdk.org \
--cc=pablo.de.lara.guarch@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).