On 6/22/22 11:25, Yuan Wang wrote:
drain_eth_rx() uses rte_vhost_avail_entries() to calculate
the available entries to determine if a retry is required.
However, this function only works with split rings, and
calculating packed rings will return the wrong value and cause
unnecessary retries resulting in a significant performance penalty.
This patch fix that by using the difference between tx/rx burst
as the retry condition.
Fixes: be800696c26e ("examples/vhost: use burst enqueue and dequeue from lib")
Cc: [email protected]
Signed-off-by: Yuan Wang <[email protected]>
Tested-by: Wei Ling <[email protected]>
---
V4: Fix fiexs tag.
V3: Fix mbuf index.
V2: Rebase to 22.07 rc1.
---
examples/vhost/main.c | 28 +++++++++++-----------------
1 file changed, 11 insertions(+), 17 deletions(-)
Applied to dpdk-next-virtio/main.
Thanks,
Maxime
__ATOMIC_SEQ_CST);
