From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: maxime.coquelin@redhat.com, tiwei.bie@intel.com, wexu@redhat.com,
jfreimann@redhat.com, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, Jason Wang <jasowang@redhat.com>
Subject: [PATCH RFC 0/2] virtio-net: interrupt related improvements
Date: Wed, 5 Dec 2018 17:54:09 -0500 [thread overview]
Message-ID: <20181205225323.12555-1-mst@redhat.com> (raw)
Now that we have brought the virtio overhead way down with a fast packed
ring implementation, we seem to be actually observing TCP drops
indicative of bufferbloat. So let's try to enable TSQ. Note: it isn't
clear that the default pacing is great for the virt usecase. It's worth
trying to play with sk_pacing_shift_update to see what happens.
For this reason, and for a more important one that I didn't
have time to test it yet, sending as an RFC.
Michael S. Tsirkin (2):
virtio-net: bql support
virtio_net: bulk free tx skbs
drivers/net/virtio_net.c | 29 ++++++++++++++++++++---------
1 file changed, 20 insertions(+), 9 deletions(-)
--
MST
next reply other threads:[~2018-12-05 22:54 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-05 22:54 Michael S. Tsirkin [this message]
2018-12-05 22:54 ` [PATCH RFC 1/2] virtio-net: bql support Michael S. Tsirkin
2018-12-06 8:17 ` Jason Wang
2018-12-06 8:31 ` Jason Wang
2018-12-26 15:15 ` Michael S. Tsirkin
2018-12-27 9:56 ` Jason Wang
2018-12-26 15:19 ` Michael S. Tsirkin
2018-12-27 10:00 ` Jason Wang
2018-12-30 18:45 ` Michael S. Tsirkin
2019-01-02 3:28 ` Jason Wang
2019-01-02 13:59 ` Michael S. Tsirkin
2019-01-07 2:14 ` Jason Wang
2019-01-07 3:17 ` Michael S. Tsirkin
2019-01-07 3:51 ` Jason Wang
2019-01-07 4:01 ` Michael S. Tsirkin
2019-01-07 6:31 ` Jason Wang
2019-01-07 14:19 ` Michael S. Tsirkin
2019-01-08 10:06 ` Jason Wang
2018-12-26 15:22 ` Michael S. Tsirkin
2018-12-27 10:04 ` Jason Wang
2018-12-30 18:48 ` Michael S. Tsirkin
2019-01-02 3:30 ` Jason Wang
2019-01-02 13:54 ` Michael S. Tsirkin
2019-01-17 13:09 ` Jason Wang
2018-12-05 22:54 ` [PATCH RFC 2/2] virtio_net: bulk free tx skbs Michael S. Tsirkin
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