On 4/24/20 5:39 AM, Joyce Kong wrote:
> This patchset replaces the two-way barriers with C11 one-way barriers
> for split vring idx, when the frontend and backend are implemented
> in software.
>
> By doing PVP benchmarking, the test result of 2c1q showed the throughput
> increased 20% with the 0.001% of acceptable loss rate on Thunderx2
> platform.[1]
>
> By doing vhost-user + virtio-user case benchmarking, 4% performance gain
> was measured on Thunderx2 platform by 2c1q RFC2544 test of 0.001% loss,
> and 4.7% performance was improved on Dell platform by 1c1q RFC2544 test
> of zero packet loss.[2]
>
> [1]https://doc.dpdk.org/guides/howto/pvp_reference_benchmark.html
> [2]https://doc.dpdk.org/dts/test_plans/pvp_multi_paths_performance_test_plan.html
> PVP test with virtio 1.0 normal path
>
> v4:
> Remove some duplicated code comment.
>
> v3:
> Modify some style error.
>
> v2:
> Add test performance statistics.
>
> Joyce Kong (2):
> virtio: one way barrier for split vring used idx
> virtio: one way barrier for split vring avail idx
>
> drivers/net/virtio/virtio_ethdev.c | 7 +--
> drivers/net/virtio/virtio_ring.h | 2 +-
> drivers/net/virtio/virtio_rxtx.c | 35 ++++-------
> drivers/net/virtio/virtio_rxtx_simple_neon.c | 5 +-
> drivers/net/virtio/virtio_rxtx_simple_sse.c | 4 +-
> .../net/virtio/virtio_user/virtio_user_dev.c | 8 ++-
> drivers/net/virtio/virtqueue.c | 2 +-
> drivers/net/virtio/virtqueue.h | 58 ++++++++++++++++---
> lib/librte_vhost/virtio_net.c | 19 +++---
> 9 files changed, 81 insertions(+), 59 deletions(-)
>
Applied to dpdk-next-virtio/master
Thanks,
Maxime
