From: Jason Wang
Date: Tue, 9 Jan 2018 18:27:45 +0800
> This patch tries to batched used ring update during RX. This is pretty
> fit for the case when guest is much faster (e.g dpdk based
> backend). In this case, used ring is almost empty:
>
> - we may get serious cache line misses/contending
On Tue, Jan 09, 2018 at 06:27:45PM +0800, Jason Wang wrote:
> This patch tries to batched used ring update during RX. This is pretty
> fit for the case when guest is much faster (e.g dpdk based
> backend). In this case, used ring is almost empty:
>
> - we may get serious cache line misses/contendi
This patch tries to batched used ring update during RX. This is pretty
fit for the case when guest is much faster (e.g dpdk based
backend). In this case, used ring is almost empty:
- we may get serious cache line misses/contending on both used ring
and used idx.
- at most 1 packet could be deque
