From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: [PATCH RFC 0/2] virtio-net: interrupt related improvements Date: Wed, 5 Dec 2018 17:54:09 -0500 Message-ID: <20181205225323.12555-1-mst@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii 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 To: linux-kernel@vger.kernel.org Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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