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Re: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing

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On Fri, May 19, 2017 at 02:27:16PM +0800, Jason Wang wrote:
> 
> 
> On 2017年05月18日 04:59, Michael S. Tsirkin wrote:
> > On Wed, May 17, 2017 at 12:14:36PM +0800, Jason Wang wrote:
> > > This series tries to implement rx batching for vhost-net. This is done
> > > by batching the dequeuing from skb_array which was exported by
> > > underlayer socket and pass the sbk back through msg_control to finish
> > > userspace copying. This is also the requirement for more batching
> > > implemention on rx path.
> > > 
> > > Tests shows at most 7.56% improvment bon rx pps on top of batch
> > > zeroing and no obvious changes for TCP_STREAM/TCP_RR result.
> > > 
> > > Please review.
> > > 
> > > Thanks
> > A surprisingly large gain for such as simple change.  It would be nice
> > to understand better why this helps - in particular, does the optimal
> > batch size change if ring is bigger or smaller?
> 
> Will test, just want to confirm. You mean virtio ring not tx_queue_len here?
> 
> Thanks

Exactly.
Thanks,
MST

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[PATCH net-next V5 0/9] vhost_net rx batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-05-17 06:20 +0200
  [PATCH net-next V5 7/9] tun: support receiving skb through msg_control Jason Wang <jasowang@redhat.com> - 2017-05-17 06:20 +0200
  [PATCH net-next V5 1/9] ptr_ring: add ptr_ring_unconsume Jason Wang <jasowang@redhat.com> - 2017-05-17 06:20 +0200
  [PATCH net-next V5 8/9] tap: support receiving skb from msg_control Jason Wang <jasowang@redhat.com> - 2017-05-17 06:20 +0200
  [PATCH net-next V5 2/9] skb_array: introduce skb_array_unconsume Jason Wang <jasowang@redhat.com> - 2017-05-17 06:20 +0200
  Re: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing "Michael S. Tsirkin" <mst@redhat.com> - 2017-05-17 23:10 +0200
    Re: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing Jason Wang <jasowang@redhat.com> - 2017-05-19 08:30 +0200
      Re: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing "Michael S. Tsirkin" <mst@redhat.com> - 2017-05-19 18:40 +0200
  Re: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing David Miller <davem@davemloft.net> - 2017-05-18 16:10 +0200

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