[dpdk-dev] [PATCH v2 0/5] virtio: Tx performance improvements

Xie, Huawei huawei.xie at intel.com
Mon Oct 26 15:05:37 CET 2015


On 10/19/2015 1:16 PM, Stephen Hemminger wrote:
> This is a tested version of the virtio Tx performance improvements
> that I posted earlier on the list, and described at the DPDK Userspace
> meeting in Dublin. Together they get a 25% performance improvement for
> both small packet and large multi-segment packet case when testing
> from DPDK guest application to Linux KVM host.
>
> Stephen Hemminger (5):
>   virtio: clean up space checks on xmit
>   virtio: don't use unlikely for normal tx stuff
>   virtio: use indirect ring elements
>   virtio: use any layout on transmit
>   virtio: optimize transmit enqueue
There is one open why merge-able header is used in tx path. Since old
implementation is also using the merge-able header in tx path if this
feature is negotiated, i choose to ack the patch and address this later
if not now.

Acked-by: Huawei Xie <huawei.xie at intel.com>





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