On Fri, Jul 20, 2018 at 08:15:12AM +0800, Jason Wang wrote: > Hi: > > This series implement batch updating of used ring for TX. This help to > reduce the cache contention on used ring. The idea is first split > datacopy path from zerocopy, and do only batching for datacopy. This > is because zercopy had already supported its own batching. > > TX PPS was increased 25.8% and Netperf TCP does not show obvious > differences. > > The split of datapath will also be helpful for future implementation > like in order completion. > > Please review. > > Thanks Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> I'm very happy with the split, the mixed data path became hard to maintain. > Jason Wang (9): > vhost_net: drop unnecessary parameter > vhost_net: introduce helper to initialize tx iov iter > vhost_net: introduce vhost_exceeds_weight() > vhost_net: introduce get_tx_bufs() > vhost_net: introduce tx_can_batch() > vhost_net: split out datacopy logic > vhost_net: rename vhost_rx_signal_used() to vhost_net_signal_used() > vhost_net: rename VHOST_RX_BATCH to VHOST_NET_BATCH > vhost_net: batch update used ring for datacopy TX > > drivers/vhost/net.c | 249 +++++++++++++++++++++++++++++++++++++--------------- > 1 file changed, 179 insertions(+), 70 deletions(-) > > -- > 2.7.4
