performance issue within VNET jail

[Kristof Provost]

On 21 Dec 2017, at 21:24, Michael Grimm wrote:
>
> I do have to admit that I am lost here, and that I cannot think about 
> what is going wrong. The last download I did try at my old severs has 
> been some weeks ago. Ever since I did upgrade FreeBSD 11.1-STABLE, and 
> I did move my infrastructure from bare metal to cloud, thus I cannot 
> test anymore if my old servers would have shown that performance issue 
> in the meantime.
>
> Thus any feedback is highly recommended!
>
Can you try turning off TSO? (`ifconfig $ifname -tso`)

There have been issues with pf and TSO checksums, which looked a lot 
like this (i.e. bad TCP performance). Those problems should be fixed, 
but this is easy to test.

Regards,
Kristof