[dpdk-dev] [PATCH] vhost: batch used descriptors chains write-back with packed ring

[Jens Freimann]

On Wed, Nov 28, 2018 at 10:47:00AM +0100, Maxime Coquelin wrote:
>Instead of writing back descriptors chains in order, let's
>write the first chain flags last in order to improve batching.
>
>With Kernel's pktgen benchmark, ~3% performance gain is measured.
>
>Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
>---
> lib/librte_vhost/virtio_net.c | 37 ++++++++++++++++++++++-------------
> 1 file changed, 23 insertions(+), 14 deletions(-)
>

Tested-by: Jens Freimann <jfreimann at redhat.com>
Reviewed-by: Jens Freimann <jfreimann at redhat.com>