From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Wang Subject: [PATCH net-next RFC 0/5] batched tx processing in vhost_net Date: Fri, 22 Sep 2017 16:02:30 +0800 Message-ID: <1506067355-5771-1-git-send-email-jasowang@redhat.com> Cc: kvm@vger.kernel.org To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi: This series tries to implement basic tx batched processing. This is done by prefetching descriptor indices and update used ring in a batch. This intends to speed up used ring updating and improve the cache utilization. Test shows about ~22% improvement in tx pss. Please review. Jason Wang (5): vhost: split out ring head fetching logic vhost: introduce helper to prefetch desc index vhost: introduce vhost_add_used_idx() vhost_net: rename VHOST_RX_BATCH to VHOST_NET_BATCH vhost_net: basic tx virtqueue batched processing drivers/vhost/net.c | 221 ++++++++++++++++++++++++++++---------------------- drivers/vhost/vhost.c | 165 +++++++++++++++++++++++++++++++------ drivers/vhost/vhost.h | 9 ++ 3 files changed, 270 insertions(+), 125 deletions(-) -- 2.7.4