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Re: [PATCH net-next V4 0/6] switch to use tx skb array in tun

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On 2016年06月30日 23:45, Michael S. Tsirkin wrote:
> On Thu, Jun 30, 2016 at 02:45:30PM +0800, Jason Wang wrote:
>> >Hi all:
>> >
>> >This series tries to switch to use skb array in tun. This is used to
>> >eliminate the spinlock contention between producer and consumer. The
>> >conversion was straightforward: just introdce a tx skb array and use
>> >it instead of sk_receive_queue.
>> >
>> >A minor issue is to keep the tx_queue_len behaviour, since tun used to
>> >use it for the length of sk_receive_queue. This is done through:
>> >
>> >- add the ability to resize multiple rings at once to avoid handling
>> >   partial resize failure for mutiple rings.
>> >- add the support for zero length ring.
>> >- introduce a notifier which was triggered when tx_queue_len was
>> >   changed for a netdev.
>> >- resize all queues during the tx_queue_len changing.
>> >
>> >Tests shows about 15% improvement on guest rx pps:
>> >
>> >Before: ~1300000pps
>> >After : ~1500000pps
> Acked-by: Michael S. Tsirkin<mst@redhat.com>
>
> Acked-from-altitude: 34697 feet.

Wow, thanks a lot!

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[PATCH net-next V4 0/6] switch to use tx skb array in tun Jason Wang <jasowang@redhat.com> - 2016-06-30 08:50 +0200
  [PATCH net-next V4 1/6] ptr_ring: support zero length ring Jason Wang <jasowang@redhat.com> - 2016-06-30 08:50 +0200
  [PATCH net-next V4 6/6] tun: switch to use skb array for tx Jason Wang <jasowang@redhat.com> - 2016-06-30 08:50 +0200
  [PATCH net-next V4 2/6] skb_array: minor tweak Jason Wang <jasowang@redhat.com> - 2016-06-30 08:50 +0200
  Re: [PATCH net-next V4 0/6] switch to use tx skb array in tun "Michael S. Tsirkin" <mst@redhat.com> - 2016-06-30 17:50 +0200
    Re: [PATCH net-next V4 0/6] switch to use tx skb array in tun Jason Wang <jasowang@redhat.com> - 2016-07-01 08:10 +0200
  Re: [PATCH net-next V4 0/6] switch to use tx skb array in tun David Miller <davem@davemloft.net> - 2016-07-01 12:00 +0200

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