Re: [PATCH net-next] vhost_net: batch used ring update in rx

2018-01-10 Thread David Miller
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

Re: [PATCH net-next] vhost_net: batch used ring update in rx

2018-01-09 Thread Michael S. Tsirkin
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