performance issue within VNET jail

[Kristof Provost]

On 21 Dec 2017, at 21:50, Michael Grimm wrote:
> Kristof Provost <kristof at sigsegv.be> wrote:
>>
>> 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.
>>
>
> I did try it, but without success.
>
Hmm. I’ve got no ideas at the moment. I run a very similar setup 
(although on CURRENT), and see no performance issues from my jails.
Can you test a performance test without pf? Perhaps from the local LAN 
for example? That should help narrow it down a bit, at least.

Regards,
Kristof