Re: [Bloat] virtio_net: BQL?

From: Eric Dumazet
Date: Wed May 19 2021 - 10:31:53 EST




On 5/18/21 1:00 AM, Stephen Hemminger wrote:

>
> The Azure network driver (netvsc) also does not have BQL. Several years ago
> I tried adding it but it benchmarked worse and there is the added complexity
> of handling the accelerated networking VF path.
>


Note that NIC with many TX queues make BQL almost useless, only adding extra
overhead.

We should probably make BQL something that can be manually turned on/off.