[dpdk-dev] [PATCH v5 0/2] one way barrier for split vring idx
Joyce Kong
joyce.kong at arm.com
Thu Apr 30 11:14:35 CEST 2020
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
v5:
Fix the compling issue when 'CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DUMP=y'
is enabled.
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(-)
--
2.17.1
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