Re: Dom0 xvif mbuf issues

[Thor Lancelot Simon <tls%panix.com@localhost>]

On Thu, Oct 04, 2018 at 05:01:21PM +0200, Manuel Bouyer wrote:
> 
> Maybe you should try reverting
> kern.sbmax=1048576                   
> net.inet.tcp.recvbuf_max=1048576     
> net.inet.tcp.sendbuf_max=1048576     
> 
> to their default values.

At least, the sbmax value needs to be slightly larger than the
socket buffer sizes, because there's some overhead.  If you
manually set sendspace or recvspace to exactly the sbmax value you
will see problems quickly.  I don't know what happens with the
autotuning code, though.