On Fri, 17 Feb 2023 13:23:14 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote: > On Thu, Feb 16, 2023 at 7:50 PM Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> wrote: > > > > On Thu, 16 Feb 2023 13:27:00 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote: > > > On Tue, Feb 14, 2023 at 3:27 PM Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> wrote: > > > > > > > > XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero > > > > copy feature of xsk (XDP socket) needs to be supported by the driver. The > > > > performance of zero copy is very good. > > > > > > > > ENV: Qemu with vhost. > > > > > > > > vhost cpu | Guest APP CPU |Guest Softirq CPU | PPS > > > > -----------------------------|---------------|------------------|------------ > > > > xmit by sockperf: 90% | 100% | | 318967 > > > > xmit by xsk: 100% | 30% | 33% | 1192064 > > > > > > What's the setup of this test? > > > > > > CPU model/frequency, packet size, zerocopy enabled or not. > > > > Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz > > > > zerocopy: enabled > > > > size: 64 > > > > > > > > > > (I remember I can get better performance with my old laptop through > > > pktgen (about 2Mpps)) > > > > Let's compare sockperf just. > > > > The result of the test on Alibaba Cloud was 3.5M+PPS/60%cpu. > > Just to make sure I understand here, the above said: > sockperf: https://github.com/Mellanox/sockperf It should be my problem, I didn't make it clear. sockperf uses the sentdo() syscall to send udp packets. xsk send udp by AF_XDP. I write an app with AF_XDP. Thanks. > xmit by sockperf: 90% | 100% | | 318967 > > It's 0.3 Mpps, what's the difference between those two? > > Thanks > > > > > Thanks. > > > > > > > > > > Thanks > > > > > > > recv by sockperf: 100% | 68% | 100% | 692288 > > > > recv by xsk: 100% | 33% | 43% | 771670 > > > > > > > > Before achieving the function of Virtio-Net, we also have to let virtio core > > > > support these features: > > > > > > > > 1. virtio core support premapped > > > > 2. virtio core support reset per-queue > > > > 3. introduce DMA APIs to virtio core > > > > > > > > Please review. > > > > > > > > Thanks. > > > > > > > > Xuan Zhuo (10): > > > > virtio_ring: split: refactor virtqueue_add_split() for premapped > > > > virtio_ring: packed: separate prepare code from > > > > virtuque_add_indirect_packed() > > > > virtio_ring: packed: refactor virtqueue_add_packed() for premapped > > > > virtio_ring: split: introduce virtqueue_add_split_premapped() > > > > virtio_ring: packed: introduce virtqueue_add_packed_premapped() > > > > virtio_ring: introduce virtqueue_add_inbuf_premapped() > > > > virtio_ring: add api virtio_dma_map() for advance dma > > > > virtio_ring: introduce dma sync api for virtio > > > > virtio_ring: correct the expression of the description of > > > > virtqueue_resize() > > > > virtio_ring: introduce virtqueue_reset() > > > > > > > > drivers/virtio/virtio_ring.c | 792 ++++++++++++++++++++++++++++------- > > > > include/linux/virtio.h | 29 ++ > > > > 2 files changed, 659 insertions(+), 162 deletions(-) > > > > > > > > -- > > > > 2.32.0.3.g01195cf9f > > > > > > > > > > _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
