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Message-Id: <cover.1697093455.git.hengqi@linux.alibaba.com> Date: Thu, 12 Oct 2023 15:44:04 +0800 From: Heng Qi <hengqi@...ux.alibaba.com> To: Jason Wang <jasowang@...hat.com>, "Michael S. Tsirkin" <mst@...hat.com>, netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org Cc: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Eric Dumazet <edumazet@...gle.com>, "David S. Miller" <davem@...emloft.net>, Paolo Abeni <pabeni@...hat.com>, Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, Alexei Starovoitov <ast@...nel.org>, Jakub Kicinski <kuba@...nel.org>, Simon Horman <horms@...nel.org>, "Liu, Yujie" <yujie.liu@...el.com> Subject: [PATCH net-next 0/5] virtio-net: support dynamic coalescing moderation Now, virtio-net already supports per-queue moderation parameter setting. Based on this, we use the netdim library of linux to support dynamic coalescing moderation for virtio-net. Due to hardware scheduling issues, we only tested rx dim. @Test env rxq0 has affinity to cpu0. @Test cmd client: taskset -c 0 sockperf tp -i ${IP} -t 30 --tcp -m ${msg_size} server: taskset -c 0 sockperf sr --tcp @Test res The second column is the ratio of the result returned by client when rx dim is enabled to the result returned by client when rx dim is disabled. -------------------------------------- | msg_size | rx_dim=on / rx_dim=off | -------------------------------------- | 14B | + 3% | -------------------------------------- | 100B | + 16% | -------------------------------------- | 500B | + 25% | -------------------------------------- | 1400B | + 28% | -------------------------------------- | 2048B | + 22% | -------------------------------------- | 4096B | + 5% | -------------------------------------- --- This patch set was part of the previous netdim patch set[1]. [1] was split into a merged bugfix set[2] and the current set. The previous relevant commentators have been Cced. [1] https://lore.kernel.org/all/20230811065512.22190-1-hengqi@linux.alibaba.com/ [2] https://lore.kernel.org/all/cover.1696745452.git.hengqi@linux.alibaba.com/ Heng Qi (5): virtio-net: returns whether napi is complete virtio-net: separate rx/tx coalescing moderation cmds virtio-net: extract virtqueue coalescig cmd for reuse virtio-net: support rx netdim virtio-net: support tx netdim drivers/net/virtio_net.c | 394 ++++++++++++++++++++++++++++++++------- 1 file changed, 322 insertions(+), 72 deletions(-) -- 2.19.1.6.gb485710b
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