Performance issues with VNET/bridge/VLAN

[Michael Grimm]

Am 2019-02-22 11:31, schrieb Patrick M. Hausen:

[x-posted to freebsd-jail at freebsd.org]

> The machine is an iocage jail host, all jails with VNET.
> 
> The problem is: network performance in the jails (not on the host!) is 
> abysmal
> with the second setup. Not consistently so, everything *seems* to work
> but e.g. a customer complained that checking out a project from github
> happend at 15k/s … that’s when we started to investigate.

[...]

> *Any* idea what might be going on here? We use VNET all the same on all 
> the
> hosts and it is still labelled „experimental", yes. But all the parts 
> that
> make up the different setups - bridge(4), vlan(4) - have been in 
> FreeBSD
> for ages. I’m just combining features orthogonally like every good 
> sysadmin ;-)
> 
> If someone is willing to do some investigation, I think I can provide a 
> test
> system and remote access …

This sounds familiar to me, please have a look at the following two 
threads:

https://lists.freebsd.org/pipermail/freebsd-jail/2019-February/003684.html
https://lists.freebsd.org/pipermail/freebsd-net/2017-December/049470.html

If your hosts run on cloud infrastructure odds are that the mentioned 
settings will work in your case.

Regards,
Michael