mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com,
	eperezma@redhat.com
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com,
	virtualization@lists.linux.dev, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next RFC 0/2] don't clean packets in start_xmit in TX NAPI mode
Date: Wed, 22 Jan 2025 14:15:58 +0800	[thread overview]
Message-ID: <20250122061600.16781-1-jasowang@redhat.com> (raw)

Hi all:

This is an RFC to try to speed up TX by avoid cleaning transmitted
packets in start_xmit() when TX NAPI mode is enabled. This increase
25%-62% PPS depending on the setups while keeping the TCP throughput.

More numbers could be seen in patch 2.

Thanks

Jason Wang (2):
  virtio-net: factor out logic for stopping TX
  virtio-net: free old xmit skbs only in NAPI

 drivers/net/virtio_net.c | 53 ++++++++++++++++++++++++++++++----------
 1 file changed, 40 insertions(+), 13 deletions(-)

-- 
2.34.1


             reply	other threads:[~2025-01-22  6:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-22  6:15 Jason Wang [this message]
2025-01-22  6:15 ` [PATCH net-next RFC 1/2] virtio-net: factor out logic for stopping TX Jason Wang
2025-01-22  6:16 ` [PATCH net-next RFC 2/2] virtio-net: free old xmit skbs only in NAPI Jason Wang

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=20250122061600.16781-1-jasowang@redhat.com \
    --to=jasowang@redhat.com \
    --cc=andrew+netdev@lunn.ch \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=eperezma@redhat.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mst@redhat.com \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=virtualization@lists.linux.dev \
    --cc=xuanzhuo@linux.alibaba.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
all inboxes | Powered by JetHome®