netdev - [PATCH net-next RFC 0/5] batched tx processing in vhost

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Date:   Fri, 22 Sep 2017 16:02:30 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     mst@...hat.com, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kvm@...r.kernel.org
Subject: [PATCH net-next RFC 0/5] batched tx processing in vhost_net

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