On 17.12.2019 16:07, Kevin Traynor wrote:
> Accessing the sw stats in the vhost datapath of a PVP test
> can incur a performance drop of ~2%.
>
> Most of the time these stats will just be getting zero added
> to them. By checking if there is a non-zero update first, we
> can avoid accessing them when they won't be updated and avoid
> the performance drop.
>
> Fixes: 2f862c712e52 ("netdev-dpdk: Detailed packet drop statistics.")
> Signed-off-by: Kevin Traynor <[email protected]>
> ---
We actually have similar checks for physical ports, so it's sane
to have them for vhost too.
Thanks Kevin and Eelco! Applied to master.
Best regards, Ilya Maximets.
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